COGEN TECHNOLOGIES INC
S-1/A, 1998-08-25
ELECTRIC SERVICES
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<PAGE>
 
    
 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 25, 1998     
                                                  REGISTRATION NUMBER 333-53533
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
 
                               ---------------
                                
                             AMENDMENT NO. 2     
                                      TO
                                   FORM S-1
 
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
 
                               ---------------
                           COGEN TECHNOLOGIES, INC.
            (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
        DELAWARE                  4911                  76-0571474
     (STATE OR OTHER        (PRIMARY STANDARD        (I.R.S. EMPLOYER
     JURISDICTION OF           INDUSTRIAL           IDENTIFICATION NO.)
    INCORPORATION OR       CLASSIFICATION CODE
      ORGANIZATION)              NUMBER)
 
                           COGEN TECHNOLOGIES, INC.
                           711 LOUISIANA, 33RD FLOOR
                             HOUSTON, TEXAS 77002
                                 713/336-7700
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
 
                           RICHARD A. LYDECKER, JR.
               SENIOR VICE PRESIDENT AND CHIEF FINANCIAL OFFICER
                           711 LOUISIANA, 33RD FLOOR
                             HOUSTON, TEXAS 77002
                                 713/336-7700
(NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)
 
                                  COPIES TO:
          CHARLES H. STILL                        JOSEPH A. COCO
     FULBRIGHT & JAWORSKI L.L.P.       SKADDEN, ARPS, SLATE, MEAGHER & FLOM
      1301 MCKINNEY, SUITE 5100                         LLP
      HOUSTON, TEXAS 77010-3095                  919 THIRD AVENUE
            713-/651-5151                     NEW YORK, NY 10022-3897
                                                   212/735-3000
 
                               ---------------
  APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after this Registration Statement becomes effective.
 
  If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, check the following box.  [_]
 
  If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [_]
 
  If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [_]
 
  If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [_]
 
  If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [_]
       
  THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH
SECTION 8(A) OF THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION
STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                               EXPLANATORY NOTES
   
  This Amendment No. 2 to Registration Statement on Form S-1 has been filed
solely to effect the filing of Exhibits 4.1, 10.4, 10.33, and 10.79 through
10.82.     
<PAGE>
 
                                    PART II
 
                    INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
  The estimated expenses in connection with the Offering are:
 
<TABLE>
   <S>                                                                 <C>
   Securities and Exchange Commission Registration Fee................ $265,000
   NASD Filing Fee....................................................   30,500
   New York Stock Exchange Listing for Common Stock...................    *
   Legal Fees and Expenses............................................    *
   Accounting Fees and Expenses.......................................    *
   Printing Expenses..................................................    *
   Transfer Agent and Registrar Fees..................................    *
   Miscellaneous......................................................    *
                                                                       --------
     TOTAL............................................................ $  *
                                                                       ========
</TABLE>
- --------
 * To be provided by amendment.
 
ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
  Article Eighth of the Company's Certificate of Incorporation and Article X
of the Companys Bylaws provide for mandatory indemnification to at least the
extent specifically allowed by Section 145 of the General Corporation Law of
the State of Delaware (the GCL).
 
  Pursuant to Section 145 of the GCL, the Company generally has the power to
indemnify its current and former directors, officers, employees and agents
against expenses and liabilities incurred by them in connection with any suit
to which they are, or are threatened to be made, a party by reason of their
serving in such positions so long as they acted in good faith and in a manner
in which they reasonably believed to be, or not opposed to, the best interest
of the Company, and with respect to any criminal action, they had no
reasonable cause to believe their conduct was unlawful. With respect to suits
by or in the right of the Company, however, indemnification is generally
limited to attorneys' fees and other expenses and is not available if such
person is adjudged to be liable to the Registrant unless the court determines
that indemnification is appropriate. The statute expressly provides that the
power to indemnify authorized thereby is not exclusive of any rights granted
under any bylaw, agreement, vote of stockholders or disinterested directors,
or otherwise. The Company also has the power to purchase and maintain
insurance for such persons.
 
  The above discussion of the Company's Certificate of Incorporation and
Bylaws and Section 145 of the GCL is not intended to be exhaustive and is
qualified in its entirety by such document and statute.
 
  Directors and Officers are insured at the Company's expense, against certain
liabilities which might arise out of their employment and which are not
subject to indemnification under the Bylaws.
 
  Reference is made to the form of Underwriting Agreement, filed as Exhibit
1.1 hereto, which contains provisions for indemnification of the Company, its
directors, officers and any controlling persons by the Underwriters against
certain liabilities for information furnished by the Underwriters.
 
ITEM 15. RECENT SALES OF UNREGISTERED SECURITIES.
 
  In connection with the organization of the Company, in May 1998 an aggregate
of 1,000 shares of Common Stock were issued to the McNair Interests and the
Minority Interests pursuant to Section 4(2) of the Securities Act of 1993, as
amended.
 
 
                                     II-1
<PAGE>
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
<TABLE>   
 <C>        <S>
    +1.1    Form of Underwriting Agreement.
    +3.1    Certificate of Incorporation.
    +3.2    Bylaws.
     4.1    Form of Common Stock Certificate.
    +4.2    See Exhibits 3.1 and 3.2 hereto for provisions of the Certificate
            of Incorporation and Bylaws of Cogen defining the rights of the
            holders of Common Stock.
    +4.3    Indenture dated        , between Cogen Technologies, Inc. and
                      , as Trustee.
    +4.4    Rights Agreement dated as of      , 1998, between Cogen
            Technologies, Inc. and          , as Rights Agent, which includes
            as exhibits, the form of Right Certificate and the Summary of
            Rights to Purchase Common Shares.
    +5.1    Opinion of Fulbright & Jaworski L.L.P.
   *10.1    Power Purchase Agreement dated April 14, 1989 between Consolidated
            Edison Company of New York, Inc. and Cogen Technologies, Inc.
   *10.2    First Amendment dated September 19, 1990 to Power Purchase
            Agreement dated April 14, 1989 between Consolidated Edison Company
            of New York, Inc. and Cogen Technologies, Inc.
   *10.3    Second Amendment dated December 22, 1993 to Power Purchase
            Agreement dated April 14, 1989 between Consolidated Edison Company
            of New York, Inc. and Cogen Technologies, Inc.
    10.4    Gas Service Agreement between Cogen Technologies Linden Venture,
            L.P. and Public Service Electric and Gas Company and Elizabethtown
            Gas Company dated July 13, 1990 (Confidential Treatment for certain
            provisions of this agreement has been requested pursuant to Rule
            406 under the Securities Act).
   *10.5    Agreement between Cogen Technologies Linden Venture, L.P. and Exxon
            Corporation for the Sale of Steam dated August 1, 1990.
   *10.6    Backup Fuel Storage and Supply Agreement between Cogen Technologies
            Linden Venture, L.P. and Exxon Corporation dated October 4, 1991.
   *10.7    Ground Lease Agreement between Cogen Technologies Linden Venture,
            L.P. and Exxon Corporation dated August 1, 1990.
   *10.8    Operation and Maintenance Agreement by and between Cogen
            Technologies Linden Venture, L.P. and General Electric Company
            dated June 6, 1997.
   *10.9    Amended and Restated Term Loan Agreement, dated as of September 15,
            1992, between Cogen Technologies Linden, Ltd. and State Street Bank
            and Trust Company of Connecticut, National Association, as Trustee.
   *10.10   First Amendment, dated April 30, 1993, to the Amended and Restated
            Term Loan Agreement, dated as of September 15, 1992, between Cogen
            Technologies Linden, Ltd. and State Street Bank and Trust Company
            of Connecticut, National Association, as Trustee.
   *10.11   Amended and Restated Agreement of Limited Partnership of Cogen
            Technologies Linden Venture, L.P., dated as of September 15, 1992.
   *10.12   First Amendment, dated April 30, 1993, to the Amended and Restated
            Agreement of Limited Partnership of Cogen Technologies Linden
            Venture, L.P., dated as of September 15, 1992.
   *10.13   Agreement of Limited Partnership of Cogen Technologies Linden,
            Ltd., effective as of June 28, 1989.
   *10.14   First Amendment, dated as of February 14, 1990, to the Agreement of
            Limited Partnership of Cogen Technologies Linden, Ltd.
   *10.15   Second Amendment, dated as of July 31, 1990, to the Agreement of
            Limited Partnership of Cogen Technologies Linden, Ltd.
   *10.16   Easement Agreement dated June 21, 1991 among Cogen Technologies
            Linden Venture, L.P., Texas Eastern Cryogenics, Inc., Texas Eastern
            Transmission Corporation and Houston Center Corporation and
            Assignment and Conveyance dated December 22, 1993.
</TABLE>    
 
 
                                      II-2
<PAGE>
 
<TABLE>   
 <C>        <S>
   *10.17   Amended and Restated Security Deposit Agreement and Escrow
            Agreement dated as of September 17, 1992 among Cogen Technologies
            Linden Venture, L.P., Cogen Technologies Linden, Ltd., State Street
            Bank and Trust Company of Connecticut as Limited Partner and as
            Lender and Midatlantic National Bank, as amended by Amendment dated
            April 30, 1993.
   *10.18   Promissory note dated May 22, 1986 by Cogen Technologies N.J., Inc.
            in favor of Bayonne Industries, Inc.
   *10.19   Assignment and Security agreement dated February 15, 1990 between
            Cogen Technologies Linden, Ltd. and General Electric Power Funding
            Corporation.
   *10.20   Collateral Agency Agreement dated as of February 15, 1990 between
            Cogen Technologies Linden, Ltd. and General Electric Power Funding
            Corporation.
   *10.21   Firm Gas Purchase and Sale Agreement and Performance Guarantee
            between Cogen Technologies Linden Venture, L.P. and Anadarko Energy
            Services Company dated July 1, 1997.
   *10.22   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Engage Energy US, L.P. and Guaranty
            Agreement between Cogen Technologies Linden Venture, L.P. and The
            Coastal Corporation dated July 1, 1997.
   *10.23   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Columbia Energy Services Corporation and
            Guaranty Agreement between Cogen Technologies Linden Venture, L.P.
            and Columbia Gas Systems Corporation dated July 1, 1997.
   *10.24   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Sonat Marketing Company L.P. and Guaranty
            Agreement between Cogen Technologies Linden Venture, L.P. Sonat,
            Inc. dated July 1, 1997.
   *10.25   Amended and Restated Firm Gas Purchase and Sale Agreement between
            Cogen Technologies Linden Venture, L.P. and Texaco Natural Gas Inc.
            and Guaranty Agreement between Cogen Technologies Linden Venture,
            L.P. and Texaco Exploration and Production Inc. dated July 1, 1997.
   *10.26   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Vastar Gas Marketing, Inc. and Guaranty
            Agreement between Cogen Technologies Linden Venture, L.P. and
            Vastar Resources, Inc. dated July 1, 1997.
   *10.27   Letter of Credit and Reimbursement Agreement dated as of September
            17, 1992 between Cogen Technologies Linden Venture, L.P. and
            General Electric Capital Corporation.
   *10.28   Firm Gas Purchase and Sale Agreement between Camden Cogen, L.P. and
            Columbia Energy Services Corporation and Guaranty Agreement between
            Camden Cogen, L.P. and Columbia Gas Systems Corporation dated July
            1, 1997.
   *10.29   Firm Gas Purchase and Sale Agreement between Camden Cogen, L.P. and
            Texaco Natural Gas Inc. and Guaranty Agreement between Camden
            Cogen, L.P. and Texaco Exploration and Production Inc. dated July
            1, 1997.
   *10.30   Power Purchase and Interconnection Agreement, dated April 15, 1988,
            between Public Service Electric and Gas Company and Camden Cogen,
            L.P.
   *10.31   First Amendment, dated June 12, 1990, to the Power Purchase and
            Interconnection Agreement, dated April 15, 1988, between Public
            Service Electric and Gas Company and Camden Cogen, L.P.
   *10.32   Second Amendment, dated August 31, 1990, to the Power Purchase and
            Interconnection Agreement, dated April 15, 1988, between Public
            Service Electric and Gas Company and Camden Cogen, L.P.
    10.33   Gas Service Agreement, dated May 15, 1991, between Camden Cogen
            L.P. and Public Service Electric and Gas Company (Confidential
            Treatment for certain provisions of this agreement has been
            requested pursuant to Rule 406 under the Securities Act).
   *10.34   First Amendment, dated November 1, 1991, to the Gas Service
            Agreement dated May 15, 1991 between Camden Cogen L.P. and Public
            Service Electric and Gas Company.
   *10.35   Energy Purchase Agreement, dated December 18, 1989, between Camden
            Cogen, L.P. and Camden Paperboard Corporation.
   *10.36   Amendment and Restatement dated as of April 1, 1993 of the
            Construction and Term Loan Agreement dated as of February 4, 1992
            among Camden Cogen, PL.P. and General Electric Capital Corporation,
            et al.
</TABLE>    
 
 
                                      II-3
<PAGE>
 
<TABLE>   
 <C>        <S>
   *10.37   Amendment No. 1 dated as of December 22, 1993 to the Amendment and
            Restated dated as of April 1, 1993 of the Construction and Term
            Loan Agreement dated as of February 4, 1992 among Camden Cogen
            PL.P. and General Electric Capital Corporation, et al.
   *10.38   Term Loan Agreement, dated as of the Conformed Agreement Date,
            among Cogen Technologies Camden GP Limited Partnership and General
            Electric Capital Corporation.
   *10.39   Amendment No. 1 dated as of April 1, 1993 to the Term Loan
            Agreement, dated as of the Conformed Agreement Date, among Cogen
            Technologies Camden GP Limited Partnership and General Electric
            Capital Corporation.
   *10.40   Agreement of Limited Partnership of Cogen Technologies Camden GP
            Limited Partnership, dated as of July 26, 1991.
   *10.41   First Amendment, dated December 1, 1991, to the Agreement of
            Limited Partnership of Cogen Technologies Camden GP Limited
            Partnership, dated as of July 26, 1991.
   *10.42   Amended and Restated Agreement of Limited Partnership of Camden
            Cogen L.P., dated as of February 9, 1993.
   *10.43   Amendment No. 1 dated as of April 1, 1993 to the Amended and
            Restated Agreement of Limited Partnership of Camden Cogen L.P.,
            dated as of February 9, 1993.
   *10.44   Amendment No. 2 dated as of December 22, 1993 to the Amended and
            Restated Agreement of Limited Partnership of Camden Cogen L.P.,
            dated as of February 9, 1993.
   *10.45   Operation and Maintenance Agreement by and between Camden Cogen
            L.P. and General Electric Company dated June 6, 1997.
   *10.46   Mortgage dated February 4, 1992 between General Electric Capital
            Corporation and Camden Cogen, L.P., as amended by First Amendment
            to Mortgage dated April 19, 1993 and Assignment of Mortgage dated
            December 22, 1993.
   *10.47   Second Amended and Restated Security Deposit Agreement dated
            December 22, 1993 between Bank of Tokyo Trust Company, Toronto
            Dominion Bank Trust Company, Camden Cogen, L.P., General Electric
            Capital Corporation and Cogen Technologies Camden GP Limited
            Partnership and Successor Security Deposit Agreement dated December
            22, 1993.
   *10.48   Security Agreement dated as of the Conformed Agreement Date between
            General Electric Capital Corporation and Camden Cogen, L.P.,
            Amendment No. 1 dated April 1, 1993 and Amendment No. 2 dated
            December 22, 1993.
   *10.49   Pledge and Security Agreement dated as of the Conformed Agreement
            Date between General Electric Capital Corporation and Cogen
            Technologies Camden Inc., Amendment No. 1 dated April 1, 1993 and
            Amendment No. 2 dated December 22, 1993.
   *10.50   Mortgage from Camden Cogen L.P., Mortgagor, to General Electric
            Power Funding Corporation, Mortgagee, Dated as of February 4, 1992.
   *10.51   Second Mortgage from Camden Cogen L.P., Mortgagor, to Public
            Service Electric and Gas Company, Mortgagee, Dated as of February
            4, 1992.
   *10.52   Interest Rate and Currency Exchange Agreement dated April 1, 1993
            General Electric Capital Corporation and Camden Cogen, L.P.,
            Confirmation Letter dated April 1, 1993 and Amendment No. 1 dated
            December 22, 1993.
   *10.53   Firm Gas Purchase and Sale Agreement and Performance Guarantee
            between Camden Cogen, L.P. and Anadarko Energy Services Company
            dated July 1, 1997.
   *10.54   Agreement for the Sale of Steam and Electricity dated June 13, 1985
            between IMTT-Bayonne and Cogen Technologies NJ, Inc., as amended by
            Amendment dated May 26, 1986 and Consent to Assignment dated
            December 15, 1988.
   *10.55   Agreement for the Sale of Steam between Cogen Technologies NJ
            Venture and Exxon Company U.S.A., as amended by Amendment dated
            August 21, 1988.
</TABLE>    
 
 
                                      II-4
<PAGE>
 
<TABLE>   
 <C>        <S>
   *10.56   Letter Agreement for Gas Service between Public Service Electric
            and Gas Company and Cogen Technologies NJ Venture dated October 10,
            1986.
   *10.57   Water Supply Agreement between the City of Bayonne and Cogen
            Technologies NJ Venture dated June 1, 1988.
   *10.58   Lease Agreement between Bayonne Industries, Inc. and IMTT-Bayonne
            and Cogen Technologies NJ Venture dated October 18, 1986.
   *10.59   Easement from Bayonne Industries, Inc. and IMTT-Bayonne to Cogen
            Technologies NJ Venture dated October 20, 1986, as amended by
            Amendment dated December 15, 1988.
   *10.60   Power Purchase and Operations Coordination Agreement between Public
            Service Electric and Gas Company and Cogen Technologies NJ Venture
            dated June 5, 1989.
   *10.61   Agreement for Purchase of Electric Power between Cogen Technologies
            NJ Inc. and Jersey Central Power & Light Company dated October 29,
            1985.
   *10.62   Amendment dated September 5, 1986 to Agreement for Purchase of
            Electric Power between Cogen Technologies NJ Inc. and Jersey
            Central Power & Light Company dated October 29, 1985.
   *10.63   Amendment dated August 1, 1988 to Agreement for Purchase of
            Electric Power between Cogen Technologies NJ Inc. and Jersey
            Central Power & Light Company dated October 28, 1985.
   *10.64   Operation and Maintenance Agreement by and between Cogen
            Technologies NJ Venture and General Electric Company dated June 6,
            1997.
   *10.65   Revised Transmission Service and Interconnection Agreement between
            Public Service Electric and Gas Company and Cogen Technologies NJ
            Venture dated April 27, 1987.
   *10.66   Term Loan Agreement dated as of November 1, 1987 between Cogen
            Technologies NJ Venture and The Prudential Insurance Company of
            America.
   *10.67   First Amendment dated December 15, 1988 to the Term Loan Agreement
            dated as of November 1, 1987 between Cogen Technologies NJ Venture
            and The Prudential Insurance Company of America.
   *10.68   Second Amendment dated July 31, 1996 to the Term Loan Agreement
            dated as of November 1, 1987 between Cogen Technologies NJ Venture
            and The Prudential Insurance Company of America.
   *10.69   $5,000,000 Revolving Credit Loan Agreement dated as of December 19,
            1996 by and between Cogen Technologies NJ Venture and Southwest
            Bank of Texas, N.A.
   *10.70   First Amendment dated December 19, 1997 to the $5,000,000 Revolving
            Credit Loan dated as of December 19, 1996 by and between Cogen
            Technologies NJ Venture and Southwest Bank of Texas, N.A.
   *10.71   Amended and Restated Joint Venture Agreement of Cogen Technologies
            NJ Venture dated August 12, 1986.
   *10.72   Option Agreement between Bayonne Industries, Inc. and Cogen
            Technologies NJ, Inc. dated May 22, 1986.
   *10.73   Purchase and Sale Agreement among Bayonne Industries, Inc., IMTT-
            Bayonne and Cogen Technologies NJ, Inc. dated May 22, 1986.
   *10.74   Steam Producing Facilities Lease Agreement between Cogen
            Technologies NJ, Inc. and IMTT-Bayonne dated May 22, 1986 and
            Consent to Assignment dated May 22, 1986.
   *10.75   Mortgage and Security Agreement between The Prudential Insurance
            Company of America and Cogen Technologies NJ Venture dated December
            15, 1988.
   *10.76   Security Agreement and Assignment between The Prudential Insurance
            Company of America and Cogen Technologies NJ Venture dated December
            15, 1988, as amended by Amendment dated April 22, 1995 and Waiver
            dated July 28, 1995.
   *10.77   Disbursement and Security Agreement between The Prudential
            Insurance Company of America, Midatlantic National Bank and Cogen
            Technologies NJ Venture dated December 15, 1988, as amended by
            Amendment dated February 9, 1989.
   *10.78   Kerosene Fuel Storage Agreement dated May 5, 1994 between IMTT-
            Bayonne and Cogen Technologies NJ Venture.
</TABLE>    
 
 
                                      II-5
<PAGE>
 
<TABLE>   
 <C>        <S>
    10.79   Assignment and Security Agreement, dated February 4, 1992, made by
            Cogen Technologies Camden GP Limited Partnership in favor of
            General Electric Capital Corporation.
    10.80   Pledge and Security Agreement, dated as of the Conformed Agreement
            Date, made by Cogen Technologies Camden, Inc. in favor of General
            Electric Capital Corporation.
    10.81   Management Services Agreement dated effective as of September 1,
            1989 by and between Cogen Technologies NJ, Inc., Cogen Technologies
            Management Company and Robert C. McNair.
    10.82   Assignment and Assumption Agreement between Cogen Technologies
            Management Company and Cogen Technologies Management Services,
            L.P., with respect to Management Services Agreement dated effective
            as of September 1, 1989 by and between Cogen Technologies NJ, Inc.,
            Cogen Technologies Management Company and Robert C. McNair.
   *12.1    Computation of Ratio of Earnings to Fixed Charges.
   +21.1    Subsidiaries of the Company.
   *23.1    Consent of Arthur Andersen LLP
   +23.3    Consent of Fulbright & Jaworski L.L.P. (contained in Exhibit 5.1).
   *24.1    Power-of-attorney.
</TABLE>    
- --------
* Previously filed
+ To be filed by amendment.
 
  As permitted by Item 601(b)(4) of Regulation S-K, the Company has not filed
with this Registration Statement certain instruments defining the rights of
holders of long-term debt of the Company, if any, because the total amount of
securities authorized under any of such instruments does not exceed 10% of the
total assets of the Company and its subsidiaries on a consolidated basis. The
Company agrees to furnish a copy of any such agreements to the Securities and
Exchange Commission upon request.
 
  (b) Financial Statement Schedules: None.
 
ITEM 17. UNDERTAKINGS.
 
  Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the Company
pursuant to the foregoing provisions, or otherwise, the Company has been
advised that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Company of expenses incurred or paid by a director, officer or controlling
person of the Company in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Company will, unless in
the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.
 
  The undersigned Company hereby undertakes to provide to the Underwriters at
the closing specified in the Underwriting Agreement certificates in such
denominations and registered in such names as required by the Underwriters to
permit prompt delivery to each purchaser.
 
  The undersigned Company hereby undertakes that:
 
  (1) For purposes of determining any liability under the Securities Act, the
      information omitted from the form of prospectus filed as a part of this
      Registration Statement in reliance upon Rule 430A and contained in a
      form of prospectus filed by the Company pursuant to Rule 424(b)(1) or
      (4) or 497(h) under the Securities Act shall be deemed to be a part of
      this Registration Statement as of the time it was declared effective.
 
  (2) For the purpose of determining any liability under the Securities Act,
      each post-effective amendment that contains a form of prospectus shall
      be deemed to be a new registration statement relating to the securities
      offered therein, and the offering of such securities at that time shall
      be deemed to be the initial bona fide offering thereof.
 
                                     II-6
<PAGE>
 
                                  SIGNATURES
   
  Pursuant to the requirements of the Securities Act of 1933, as amended, the
Registrant has duly caused this Amendment No. 2 to the Registration Statement
to be signed on its behalf by the undersigned, thereunto duly authorized, in
the City of Houston, State of Texas on the 24th day of August, 1998.     
 
                                          Cogen Technologies, Inc.
                                          (Registrant)
 
                                          By:     /s/ Robert C. McNair
                                             ----------------------------------
 
                                                     ROBERT C. MCNAIR
                                                   Chairman of the Board
                                                and Chief Executive Officer
       
    
  Pursuant to the requirements of the Securities Act of 1933, as amended, this
Amendment No. 2 to the Registration Statement has been signed by the following
persons in the capacities and on the dates indicated.     
 
<TABLE>
<S>  <C>
</TABLE>
              SIGNATURE                      TITLE                   DATE
 
       /s/ Robert C. McNair          Chairman of the             
- -----------------------------------   Board, Chief            August 24, 1998
         ROBERT C. MCNAIR             Executive Officer                 
                                      and Director
                                      (Principal
                                      Executive Officer)
 
   /s/ Richard A. Lydecker, Jr.      Senior Vice                 
- -----------------------------------   President and Chief     August 24, 1998
     RICHARD A. LYDECKER, JR.         Financial Officer                 
                                      (Principal
                                      Financial and
                                      Accounting Officer)
 
                                                     
              *                      Director                 August 24, 1998
- -----------------------------------                                     
       PHILIP J. BURGUIERES
 
                                     
              *                      Director                 August 24, 1998
- -----------------------------------                                     
        ERNEST H. COCKRELL
 
                                                                   
              *                      Director                 August 24, 1998
- -----------------------------------                                     
          MALCOLM GILLIS
 
                                     Director
- -----------------------------------
      CHARLES BERDON LAWRENCE
 
                                                              
              *                      Director                 August 24, 1998
- -----------------------------------                                     
     CONSTANTINE S. NICANDROS
   
*By: Richard A. Lydecker, Jr.     
- -----------------------------------
      
   RICHARD A. LYDECKER, JR.     
        
     As Attorney-in-Fact     
 
                                     II-7
<PAGE>
 
                                
                             INDEX TO EXHIBITS     
         
<TABLE>   
 <C>        <S>
    +1.1    Form of Underwriting Agreement.
    +3.1    Certificate of Incorporation.
    +3.2    Bylaws.
     4.1    Form of Common Stock Certificate.
    +4.2    See Exhibits 3.1 and 3.2 hereto for provisions of the Certificate
            of Incorporation and Bylaws of Cogen defining the rights of the
            holders of Common Stock.
    +4.3    Indenture dated        , between Cogen Technologies, Inc. and
                      , as Trustee.
    +4.4    Rights Agreement dated as of      , 1998, between Cogen
            Technologies, Inc. and          , as Rights Agent, which includes
            as exhibits, the form of Right Certificate and the Summary of
            Rights to Purchase Common Shares.
    +5.1    Opinion of Fulbright & Jaworski L.L.P.
   *10.1    Power Purchase Agreement dated April 14, 1989 between Consolidated
            Edison Company of New York, Inc. and Cogen Technologies, Inc.
   *10.2    First Amendment dated September 19, 1990 to Power Purchase
            Agreement dated April 14, 1989 between Consolidated Edison Company
            of New York, Inc. and Cogen Technologies, Inc.
   *10.3    Second Amendment dated December 22, 1993 to Power Purchase
            Agreement dated April 14, 1989 between Consolidated Edison Company
            of New York, Inc. and Cogen Technologies, Inc.
    10.4    Gas Service Agreement between Cogen Technologies Linden Venture,
            L.P. and Public Service Electric and Gas Company and Elizabethtown
            Gas Company dated July 13, 1990 (Confidential Treatment for certain
            provisions of this agreement has been requested pursuant to Rule
            406 under the Securities Act)
   *10.5    Agreement between Cogen Technologies Linden Venture, L.P. and Exxon
            Corporation for the Sale of Steam dated August 1, 1990.
   *10.6    Backup Fuel Storage and Supply Agreement between Cogen Technologies
            Linden Venture, L.P. and Exxon Corporation dated October 4, 1991.
   *10.7    Ground Lease Agreement between Cogen Technologies Linden Venture,
            L.P. and Exxon Corporation dated August 1, 1990.
   *10.8    Operation and Maintenance Agreement by and between Cogen
            Technologies Linden Venture, L.P. and General Electric Company
            dated June 6, 1997.
   *10.9    Amended and Restated Term Loan Agreement, dated as of September 15,
            1992, between Cogen Technologies Linden, Ltd. and State Street Bank
            and Trust Company of Connecticut, National Association, as Trustee.
   *10.10   First Amendment, dated April 30, 1993, to the Amended and Restated
            Term Loan Agreement, dated as of September 15, 1992, between Cogen
            Technologies Linden, Ltd. and State Street Bank and Trust Company
            of Connecticut, National Association, as Trustee.
   *10.11   Amended and Restated Agreement of Limited Partnership of Cogen
            Technologies Linden Venture, L.P., dated as of September 15, 1992.
   *10.12   First Amendment, dated April 30, 1993, to the Amended and Restated
            Agreement of Limited Partnership of Cogen Technologies Linden
            Venture, L.P., dated as of September 15, 1992.
   *10.13   Agreement of Limited Partnership of Cogen Technologies Linden,
            Ltd., effective as of June 28, 1989.
   *10.14   First Amendment, dated as of February 14, 1990, to the Agreement of
            Limited Partnership of Cogen Technologies Linden, Ltd.
   *10.15   Second Amendment, dated as of July 31, 1990, to the Agreement of
            Limited Partnership of Cogen Technologies Linden, Ltd.
   *10.16   Easement Agreement dated June 21, 1991 among Cogen Technologies
            Linden Venture, L.P., Texas Eastern Cryogenics, Inc., Texas Eastern
            Transmission Corporation and Houston Center Corporation and
            Assignment and Conveyance dated December 22, 1993.
</TABLE>    
 
<PAGE>
 
<TABLE>   
 <C>        <S>
   *10.17   Amended and Restated Security Deposit Agreement and Escrow
            Agreement dated as of September 17, 1992 among Cogen Technologies
            Linden Venture, L.P., Cogen Technologies Linden, Ltd., State Street
            Bank and Trust Company of Connecticut as Limited Partner and as
            Lender and Midatlantic National Bank, as amended by Amendment dated
            April 30, 1993.
   *10.18   Promissory note dated May 22, 1986 by Cogen Technologies N.J., Inc.
            in favor of Bayonne Industries, Inc.
   *10.19   Assignment and Security agreement dated February 15, 1990 between
            Cogen Technologies Linden, Ltd. and General Electric Power Funding
            Corporation.
   *10.20   Collateral Agency Agreement dated as of February 15, 1990 between
            Cogen Technologies Linden, Ltd. and General Electric Power Funding
            Corporation.
   *10.21   Firm Gas Purchase and Sale Agreement and Performance Guarantee
            between Cogen Technologies Linden Venture, L.P. and Anadarko Energy
            Services Company dated July 1, 1997.
   *10.22   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Engage Energy US, L.P. and Guaranty
            Agreement between Cogen Technologies Linden Venture, L.P. and The
            Coastal Corporation dated July 1, 1997.
   *10.23   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Columbia Energy Services Corporation and
            Guaranty Agreement between Cogen Technologies Linden Venture, L.P.
            and Columbia Gas Systems Corporation dated July 1, 1997.
   *10.24   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Sonat Marketing Company L.P. and Guaranty
            Agreement between Cogen Technologies Linden Venture, L.P. Sonat,
            Inc. dated July 1, 1997.
   *10.25   Amended and Restated Firm Gas Purchase and Sale Agreement between
            Cogen Technologies Linden Venture, L.P. and Texaco Natural Gas Inc.
            and Guaranty Agreement between Cogen Technologies Linden Venture,
            L.P. and Texaco Exploration and Production Inc. dated July 1, 1997.
   *10.26   Firm Gas Purchase and Sale Agreement between Cogen Technologies
            Linden Venture, L.P. and Vastar Gas Marketing, Inc. and Guaranty
            Agreement between Cogen Technologies Linden Venture, L.P. and
            Vastar Resources, Inc. dated July 1, 1997.
   *10.27   Letter of Credit and Reimbursement Agreement dated as of September
            17, 1992 between Cogen Technologies Linden Venture, L.P. and
            General Electric Capital Corporation.
   *10.28   Firm Gas Purchase and Sale Agreement between Camden Cogen, L.P. and
            Columbia Energy Services Corporation and Guaranty Agreement between
            Camden Cogen, L.P. and Columbia Gas Systems Corporation dated July
            1, 1997.
   *10.29   Firm Gas Purchase and Sale Agreement between Camden Cogen, L.P. and
            Texaco Natural Gas Inc. and Guaranty Agreement between Camden
            Cogen, L.P. and Texaco Exploration and Production Inc. dated July
            1, 1997.
   *10.30   Power Purchase and Interconnection Agreement, dated April 15, 1988,
            between Public Service Electric and Gas Company and Camden Cogen,
            L.P.
   *10.31   First Amendment, dated June 12, 1990, to the Power Purchase and
            Interconnection Agreement, dated April 15, 1988, between Public
            Service Electric and Gas Company and Camden Cogen, L.P.
   *10.32   Second Amendment, dated August 31, 1990, to the Power Purchase and
            Interconnection Agreement, dated April 15, 1988, between Public
            Service Electric and Gas Company and Camden Cogen, L.P.
    10.33   Gas Service Agreement, dated May 15, 1991, between Camden Cogen
            L.P. and Public Service Electric and Gas Company (Confidential
            Treatment for certain provisions of this agreement has been
            requested pursuant to Rule 406 under the Securities Act).
   *10.34   First Amendment, dated November 1, 1991, to the Gas Service
            Agreement dated May 15, 1991 between Camden Cogen L.P. and Public
            Service Electric and Gas Company.
   *10.35   Energy Purchase Agreement, dated December 18, 1989, between Camden
            Cogen, L.P. and Camden Paperboard Corporation.
   *10.36   Amendment and Restatement dated as of April 1, 1993 of the
            Construction and Term Loan Agreement dated as of February 4, 1992
            among Camden Cogen, PL.P. and General Electric Capital Corporation,
            et al.
</TABLE>    
 
<PAGE>
 
<TABLE>   
 <C>        <S>
   *10.37   Amendment No. 1 dated as of December 22, 1993 to the Amendment and
            Restated dated as of April 1, 1993 of the Construction and Term
            Loan Agreement dated as of February 4, 1992 among Camden Cogen
            PL.P. and General Electric Capital Corporation, et al.
   *10.38   Term Loan Agreement, dated as of the Conformed Agreement Date,
            among Cogen Technologies Camden GP Limited Partnership and General
            Electric Capital Corporation.
   *10.39   Amendment No. 1 dated as of April 1, 1993 to the Term Loan
            Agreement, dated as of the Conformed Agreement Date, among Cogen
            Technologies Camden GP Limited Partnership and General Electric
            Capital Corporation.
   *10.40   Agreement of Limited Partnership of Cogen Technologies Camden GP
            Limited Partnership, dated as of July 26, 1991.
   *10.41   First Amendment, dated December 1, 1991, to the Agreement of
            Limited Partnership of Cogen Technologies Camden GP Limited
            Partnership, dated as of July 26, 1991.
   *10.42   Amended and Restated Agreement of Limited Partnership of Camden
            Cogen L.P., dated as of February 9, 1993.
   *10.43   Amendment No. 1 dated as of April 1, 1993 to the Amended and
            Restated Agreement of Limited Partnership of Camden Cogen L.P.,
            dated as of February 9, 1993.
   *10.44   Amendment No. 2 dated as of December 22, 1993 to the Amended and
            Restated Agreement of Limited Partnership of Camden Cogen L.P.,
            dated as of February 9, 1993.
   *10.45   Operation and Maintenance Agreement by and between Camden Cogen
            L.P. and General Electric Company dated June 6, 1997.
   *10.46   Mortgage dated February 4, 1992 between General Electric Capital
            Corporation and Camden Cogen, L.P., as amended by First Amendment
            to Mortgage dated April 19, 1993 and Assignment of Mortgage dated
            December 22, 1993.
   *10.47   Second Amended and Restated Security Deposit Agreement dated
            December 22, 1993 between Bank of Tokyo Trust Company, Toronto
            Dominion Bank Trust Company, Camden Cogen, L.P., General Electric
            Capital Corporation and Cogen Technologies Camden GP Limited
            Partnership and Successor Security Deposit Agreement dated December
            22, 1993.
   *10.48   Security Agreement dated as of the Conformed Agreement Date between
            General Electric Capital Corporation and Camden Cogen, L.P.,
            Amendment No. 1 dated April 1, 1993 and Amendment No. 2 dated
            December 22, 1993.
   *10.49   Pledge and Security Agreement dated as of the Conformed Agreement
            Date between General Electric Capital Corporation and Cogen
            Technologies Camden Inc., Amendment No. 1 dated April 1, 1993 and
            Amendment No. 2 dated December 22, 1993.
   *10.50   Mortgage from Camden Cogen L.P., Mortgagor, to General Electric
            Power Funding Corporation, Mortgagee, Dated as of February 4, 1992.
   *10.51   Second Mortgage from Camden Cogen L.P., Mortgagor, to Public
            Service Electric and Gas Company, Mortgagee, Dated as of February
            4, 1992.
   *10.52   Interest Rate and Currency Exchange Agreement dated April 1, 1993
            General Electric Capital Corporation and Camden Cogen, L.P.,
            Confirmation Letter dated April 1, 1993 and Amendment No. 1 dated
            December 22, 1993.
   *10.53   Firm Gas Purchase and Sale Agreement and Performance Guarantee
            between Camden Cogen, L.P. and Anadarko Energy Services Company
            dated July 1, 1997.
   *10.54   Agreement for the Sale of Steam and Electricity dated June 13, 1985
            between IMTT-Bayonne and Cogen Technologies NJ, Inc., as amended by
            Amendment dated May 26, 1986 and Consent to Assignment dated
            December 15, 1988.
   *10.55   Agreement for the Sale of Steam between Cogen Technologies NJ
            Venture and Exxon Company U.S.A., as amended by Amendment dated
            August 21, 1988.
</TABLE>    
 
<PAGE>
 
<TABLE>   
 <C>        <S>
   *10.56   Letter Agreement for Gas Service between Public Service Electric
            and Gas Company and Cogen Technologies NJ Venture dated October 10,
            1986.
   *10.57   Water Supply Agreement between the City of Bayonne and Cogen
            Technologies NJ Venture dated June 1, 1988.
   *10.58   Lease Agreement between Bayonne Industries, Inc. and IMTT-Bayonne
            and Cogen Technologies NJ Venture dated October 18, 1986.
   *10.59   Easement from Bayonne Industries, Inc. and IMTT-Bayonne to Cogen
            Technologies NJ Venture dated October 20, 1986, as amended by
            Amendment dated December 15, 1988.
   *10.60   Power Purchase and Operations Coordination Agreement between Public
            Service Electric and Gas Company and Cogen Technologies NJ Venture
            dated June 5, 1989.
   *10.61   Agreement for Purchase of Electric Power between Cogen Technologies
            NJ Inc. and Jersey Central Power & Light Company dated October 29,
            1985.
   *10.62   Amendment dated September 5, 1986 to Agreement for Purchase of
            Electric Power between Cogen Technologies NJ Inc. and Jersey
            Central Power & Light Company dated October 29, 1985.
   *10.63   Amendment dated August 1, 1988 to Agreement for Purchase of
            Electric Power between Cogen Technologies NJ Inc. and Jersey
            Central Power & Light Company dated October 28, 1985.
   *10.64   Operation and Maintenance Agreement by and between Cogen
            Technologies NJ Venture and General Electric Company dated June 6,
            1997.
   *10.65   Revised Transmission Service and Interconnection Agreement between
            Public Service Electric and Gas Company and Cogen Technologies NJ
            Venture dated April 27, 1987.
   *10.66   Term Loan Agreement dated as of November 1, 1987 between Cogen
            Technologies NJ Venture and The Prudential Insurance Company of
            America.
   *10.67   First Amendment dated December 15, 1988 to the Term Loan Agreement
            dated as of November 1, 1987 between Cogen Technologies NJ Venture
            and The Prudential Insurance Company of America.
   *10.68   Second Amendment dated July 31, 1996 to the Term Loan Agreement
            dated as of November 1, 1987 between Cogen Technologies NJ Venture
            and The Prudential Insurance Company of America.
   *10.69   $5,000,000 Revolving Credit Loan Agreement dated as of December 19,
            1996 by and between Cogen Technologies NJ Venture and Southwest
            Bank of Texas, N.A.
   *10.70   First Amendment dated December 19, 1997 to the $5,000,000 Revolving
            Credit Loan dated as of December 19, 1996 by and between Cogen
            Technologies NJ Venture and Southwest Bank of Texas, N.A.
   *10.71   Amended and Restated Joint Venture Agreement of Cogen Technologies
            NJ Venture dated August 12, 1986.
   *10.72   Option Agreement between Bayonne Industries, Inc. and Cogen
            Technologies NJ, Inc. dated May 22, 1986.
   *10.73   Purchase and Sale Agreement among Bayonne Industries, Inc., IMTT-
            Bayonne and Cogen Technologies NJ, Inc. dated May 22, 1986.
   *10.74   Steam Producing Facilities Lease Agreement between Cogen
            Technologies NJ, Inc. and IMTT-Bayonne dated May 22, 1986 and
            Consent to Assignment dated May 22, 1986.
   *10.75   Mortgage and Security Agreement between The Prudential Insurance
            Company of America and Cogen Technologies NJ Venture dated December
            15, 1988.
   *10.76   Security Agreement and Assignment between The Prudential Insurance
            Company of America and Cogen Technologies NJ Venture dated December
            15, 1988, as amended by Amendment dated April 22, 1995 and Waiver
            dated July 28, 1995.
   *10.77   Disbursement and Security Agreement between The Prudential
            Insurance Company of America, Midatlantic National Bank and Cogen
            Technologies NJ Venture dated December 15, 1988, as amended by
            Amendment dated February 9, 1989.
   *10.78   Kerosene Fuel Storage Agreement dated May 5, 1994 between IMTT-
            Bayonne and Cogen Technologies NJ Venture.
</TABLE>    
 
<PAGE>
 
<TABLE>   
 <C>        <S>
    10.79   Assignment and Security Agreement, dated February 4, 1992, made by
            Cogen Technologies Camden GP Limited Partnership in favor of
            General Electric Capital Corporation.
    10.80   Pledge and Security Agreement, dated as of the Conformed Agreement
            Date, made by Cogen Technologies Camden, Inc. in favor of General
            Electric Capital Corporation.
    10.81   Management Services Agreement dated effective as of September 1,
            1989 by and between Cogen Technologies NJ, Inc., Cogen Technologies
            Management Company and Robert C. McNair.
    10.82   Assignment and Assumption Agreement between Cogen Technologies
            Management Company and Cogen Technologies Management Services,
            L.P., with respect to Management Services Agreement dated effective
            as of September 1, 1989 by and between Cogen Technologies NJ, Inc.,
            Cogen Technologies Management Company and Robert C. McNair.
   *12.1    Computation of Ratio of Earnings to Fixed Charges.
   +21.1    Subsidiaries of the Company.
   *23.1    Consent of Arthur Andersen LLP
   +23.3    Consent of Fulbright & Jaworski L.L.P. (contained in Exhibit 5.1).
   *24.1    Power-of-attorney.
</TABLE>    
- --------
* Previously filed
+ To be filed by amendment.

<PAGE>

<TABLE> 
                                                                                                          EXHIBIT 4.1
<S>                                      <C>                                                   <C> 
 
      COMMON STOCK                                                                                        COMMON STOCK
        NUMBER                                                                                                SHARES    

     CT

This certificate is transferable                                                                See Reverse For Certain Definitions
     either in Chicago, IL             
        or New York, NY                                                                                  CUSIP 192388 10 6
                                                     COGEN TECHNOLOGIES, INC.
                                       Incorporated Under the Laws of the State of Delaware

        This Certifies that




        is the owner of


                        FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK, PAR VALUE $0.01 PER SHARE, OF

                                                     COGEN TECHNOLOGIES, INC.

        transferable on the books of the Corporation by the holder hereof in person or by duly authorized attorney upon surrender of
        this certificate properly endorsed.
            This certificate is not valid until countersigned by the                            Transfer Agent and registered by the
            Registrar. Witness the facsimile seal of the Corporation and                        the facsimile signatures of its duly
            authorized Officers.                                           [COGEN TECHNOLOGIES
                                                                            SEAL APPEARS HERE]

        Dated:

            /s/ R.A. LYDECKER                                                                        /S/ ROBERT C. McNAIR
                         Secretary                                                                             Charman of the Board
</TABLE> 
<PAGE>
 
                           Cogen Technologies, Inc.

        The corporation will furnish without charge to each stockholder who so 
requests the powers, designations, preferences and relative, participating, 
optional or other special rights of each class of stock or series thereof and 
the qualifications, limitations or restrictions of such preferences and/or 
rights.

        This certificate also evidences and entitles the holder hereof to 
certain rights as set forth in a Rights Agreement (the "Rights Agreement"), 
between Cogen Technologies, Inc. and Harris Trust and Savings Bank, dated as of 
the Record Date (as defined in Rights Agreement), the terms of which are hereby 
incorporated herein by reference and a copy of which is on file at the principal
executive offices of Cogen Technologies, Inc. Under certain circumstances, as 
set forth in the Rights Agreement, the Rights described therein will be 
evidenced by separate certificates and will no longer be evidenced by this 
certificate. Cogen Technologies, Inc. will mail to the holder of this
certificate a copy of the Rights Agreement without charge after receipt of a
written request therefor. As described in the Rights Agreement, Rights issued to
any Person who becomes an Acquiring Person (as those terms are defined in the
Rights Agreement) shall become null and void.

- --------------------------------------------------------------------------------

        The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as if they were written out in full
according to applicable laws or regulations:

<TABLE> 
        <S>                                             <C> 
        TEN COM-  as tenants in common                  UNIF GIFT MIN ACT-__________________________Custodian _____________________
        TEN ENT-  as tenants by the entireties                                     (Cust)                           (Minor)
        JT TEN -  as joint tenants with right                                      under Uniform Gifts to Minors
                  of survivorship and not as                                       Act ____________________________________________
                  tenants in common                                                                     (State)
</TABLE> 

    Additional abbreviations may also be used though not in the above list.

        For Value Received _________________________________ hereby sell, assign
and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
    IDENTIFYING NUMBER OF ASSIGNEE
______________________________________

________________________________________________________________________________

________________________________________________________________________________
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OR ASSIGNEE)

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

_______________________________________________________________________ Shares  
of Common Stock represented by the within certificate, and do hereby irrevocably
constitute and appoint ________________________________________________ Attorney
to transfer the said shares on the books of the within named Corporation with 
full power of substitution in the premises.

Dated, ________________________          X _____________________________________

                                         X _____________________________________
                                           NOTICE: THE SIGNATURE(S) TO THIS
                                           ASSIGNMENT MUST CORRESPOND WITH THE
                                           NAME(S) AS WRITTEN UPON THE FACE OF
                                           THE CERTIFICATE IN EVERY PARTICULAR,
                                           WITHOUT ALTERATION OR ENLARGEMENT OR
                                           ANY CHANGE WHATEVER.


SIGNATURE GUARANTEED: ____________________________________________________
                      THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
                      GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS
                      AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH 
                      MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION 
                      PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.



KEEP THIS CERTIFICATE IN A SAFE PLACE, IF IT IS LOST, STOLEN, OR DESTROYED, THE
CORPORATION MAY REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A
REPLACEMENT CERTIFICATE.


<PAGE>
 
                                                                    EXHIBIT 10.4



                             GAS SERVICE AGREEMENT
                                    BETWEEN
                    COGEN TECHNOLOGIES LINDEN VENTURE, L.P.
                                    (BUYER)
                                      AND
                    PUBLIC SERVICE ELECTRIC AND GAS COMPANY
                                      AND
                           ELIZABETHTOWN GAS COMPANY
                                   (SELLERS)




[*] Indicates provisions redacted pursuant to request for confidential treatment
submitted to the Securities and Exchange Commission pursuant to Rule 406 under 
the Securities Act of 1933.
<PAGE>
 
                                     INDEX
                                     -----
<TABLE>
<CAPTION>
 
                                                       PAGE
                                                       ----
<S>     <C>                                            <C>
ARTICLE  1  DEFINITIONS                                 2
ARTICLE  2  COMMITMENTS                                 9
ARTICLE  3  SERVICES                                   11
ARTICLE  4  RATES AND CHARGES                          24
ARTICLE  5  DELIVERY AND RECEIPT                       27
ARTICLE  6  POSSESSION, TITLE, WARRANTY AND LIABILITY  30
ARTICLE  7  TERM                                       32
ARTICLE  8  ACCOUNTING AND PAYMENT                     33
ARTICLE  9  MEASUREMENT AND DELIVERY CONDITIONS        37
ARTICLE 10  FACILITIES                                 39
ARTICLE 11  FORCE MAJEURE                              40
ARTICLE 12  LIMITATION OF LIABILITY                    44
ARTICLE 13  DEFAULTS; RIGHT TO CURE                    45
ARTICLE 14  ACTIONS REQUIRED TO SATISFY CERTAIN        47
            CONDITIONS
ARTICLE 15  ASSIGNMENT OF INTERESTS                    50
ARTICLE 16  ECONOMIC CHANGES                           52
ARTICLE 17  NOTICES AND ADDRESSES                      55
ARTICLE 18  MISCELLANEOUS                              57
ARTICLE 19  ARBITRATION                                59

EXHIBIT "A"   [*]
EXHIBIT "B"   SELLERS' BASE RATES
EXHIBIT "C"   [*] 
EXHIBIT "D"   [*]
EXHIBIT "E"   [*]
EXHIBIT "F"   [*]
EXHIBIT "G"   [*]
EXHIBIT "H"   SELLERS' LETTERS OF REPRESENTATIONS
</TABLE> 
<PAGE>
 
                             GAS SERVICE AGREEMENT

                                   PREAMBLE
                                   --------

         THIS GAS SERVICE AGREEMENT, hereinafter referred to as the "Agreement",
is entered into and effective this 13th day of July, 1990, between COGEN
TECHNOLOGIES LINDEN VENTURE, L.P., hereinafter referred to as "Buyer", and
PUBLIC SERVICE ELECTRIC AND GAS COMPANY ("PSE&G") and ELIZABETHTOWN GAS COMPANY
("Elizabethtown"), hereinafter jointly referred to as "Sellers".

         WHEREAS, Buyer proposes to finance, construct, own and operate a
cogeneration facility in Linden, New Jersey (the "Facility") and has entered
into a Power Purchase Agreement under which it will sell the net energy and
capacity of the Facility; and

         WHEREAS, Sellers propose to transport and sell, and Buyer proposes to
receive and purchase, Natural Gas to be used as fuel for the generation of
electricity and steam at the Facility; and

         WHEREAS, Sellers desire to obtain a firm supply of Natural Gas for
their systems during certain Peak Periods and Buyer proposes to provide Sellers
such firm supply as provided herein.

         NOW, THEREFORE, in consideration of the foregoing and the promises and
covenants hereinafter set forth, the sufficiency of which is hereby
acknowledged, Buyer and Sellers agree as follows:

<PAGE>
 
                                   ARTICLE 1

                                  DEFINITIONS
                                  -----------

         Unless another meaning is expressly stated, the following words and
terms wherein used in this Agreement shall have the following meaning:

    1.1  "Agreement" shall mean this contract, including all exhibits attached
          --------- 
hereto and amendments hereof that may be made from time to time.

    1.2  "Annual Period" shall mean any one of a succession of consecutive
          -------------
twelve-month periods, the first of which shall begin on the Date of Initial
Commercial Operation of the Facility.

    1.3  "Average Cost of Interstate Transportation"  [*]
          ----------------------------------------- 


                                      -2-
<PAGE>
 
    1.4  "Base Rates" shall mean those rates contained in all of Sellers' gas
          ----------
tariff rate schedules (designated as P.U.C.N.J. No. 10 Gas for PSE&G and B.P.U.
No. 10 Gas for Elizabethtown) as updated from time to time, excluding Gas costs.
Copies of Sellers' rate schedules are attached as Exhibit "B".

    1.5  "BPU" shall mean the New Jersey Board of Public Utilities or successor
          ---
agency.

    1.6  "Butane Service" shall mean the butane supply and storage service to be
          --------------
provided by Buyer to Sellers at Exxon's Linden Plant, as provided herein.

    1.7  "Buyer" shall mean Cogen Technologies Linden Venture, L.P., a Delaware
          -----
limited partnership.

    1.8  "Commercial Operation of the Facility" shall mean the production of
          ------------------------------------ 
electricity by Buyer at the Facility, upon completion of testing the Facility,
as such term is defined in the Power Purchase Agreement.

    1.9  "Commodity Cost" shall mean [*]
          --------------
                                      -3-
<PAGE>
 
[*]

    1.10  "Con Ed" shall mean Consolidated Edison Company of New York, Inc.
           ------

    1.11  "Construction Conversion Date" shall mean the date construction loan
           ---------------------------- 
proceeds are released under the Construction Loan Agreement sufficient to
undertake the completion of the Facility, as specifically defined in the
Construction Loan Agreement.

    1.12  "Construction Loan Agreement" shall mean the contract dated as of
           ---------------------------
February 15, 1990, among Buyer, the lenders parties thereto and General Electric
Power Funding Corporation, as Agent, which provides for the pre-construction and
construction financing for the Facility, as such contract may be amended,
supplemented or otherwise modified from time to time.

    1.13  "Date of Initial Commercial Operation of the Facility" shall mean the
           ----------------------------------------------------
Day which begins at 12:01 a.m. on the first Day of the month which immediately
follows the date Buyer designates in writing to Con Ed as the initial date of
Commercial Operation of the Facility.

    1.14  "Day" shall mean a period of consecutive hours beginning 8:00 a.m.
           ---
(Eastern time) and ending at 8:00 a.m. the following calendar day.

    1.15  "Dekatherm" or "Dth" shall mean ten (10) therms of heating value.
           ---------      ---

                                      -4-
<PAGE>
 
    1.16  "Delivery Point(s)" shall mean the point or points of interconnection
           -----------------
between the outlet of Sellers' meter and Buyer's Facility.

    1.17  "Elizabethtown" shall mean Elizabethtown Gas Company.
           -------------

    1.18  "Extended Gas Service" shall mean the interruptible Gas service in
           --------------------
addition to the Resale Service and any Sales Service rendered by Sellers to
Buyer during a Peak Period.

    1.19  "Exxon" shall mean Exxon Corporation.
           -----

    1.20  "Facility" shall mean Buyer's cogeneration plant and all appurtenant
           --------
structures and equipment including Buyer's electrical and steam interconnection
facilities and real property interests owned, leased, or subleased by Buyer in
and around Linden, New Jersey, as described in the filing made with the FERC in
Docket No. QF90-65-000, for the purpose of producing steam and generating
electricity. The Facility is designed to produce electric power and steam and
consume approximately 143,500 Dekatherms of Gas per Day at full output. The
expected fuel profile for the Facility is set forth in Exhibit "D" hereto.

    1.21  "FERC" shall mean the Federal Energy Regulatory Commission or
           ----
successor agency.

    1.22  "Gas" or "Natural Gas" shall mean gas of a quality acceptable for
           ---      ----------- 
delivery into the systems of Transporter(s) or Sellers, as applicable, or other
gases acceptable for normal use in Buyer's Facility.

                                      -5-
<PAGE>
 
    1.23  "Gas Tariff" shall mean any tariff of Sellers or Transporter(s)
           ---------- 
setting forth the terms and conditions for sales or transportation services
which is filed with a Governmental Authority.

    1.24  "GEPFC" shall mean General Electric Power Funding Corporation.
           -----

    1.25  "Governmental Authority" shall mean any federal, state or local
           ----------------------
governmental entity exercising jurisdiction over rates, services, operations
and/or facilities subject to this Agreement.

    1.26  "Linden Plant" shall mean the refining and chemical plants operated by
           ------------
Exxon in Linden, New Jersey.

    1.27  "Maximum Quantity" shall mean one hundred and forty-three thousand,
           ----------------
five hundred (143,500) Dekatherms per Day of Natural Gas.

    1.28  "MW" or "Megawatts" shall mean one thousand kilowatts of electricity.
           --      ---------

    1.29  "Minimum Quantity" shall mean seventy-three thousand (73,000)
           ----------------
Dekatherms per Day of Natural Gas.

    1.30  "Peak Period" shall mean any Day if the U.S. Weather Bureau has
           -----------
forecasted that the mean temperature at Newark International Airport for such
Day will be [*] degrees Fahrenheit or less.

    1.31  "Power Purchase Agreement" shall mean Contract No. 344, dated April
           ------------------------
14, 1989, between Buyer and Con Ed,

                                      -6-
<PAGE>
 
covering the sale of electricity from the Facility, and any amendments thereto
that may be made from time to time.

    1.32  "PSE&G" shall mean Public Service Electric and Gas Company.
           -----

    1.33  "Receipt Point(s)" shall mean the points on the pipeline system(s) of
           ---------------- 
Transporter(s) at which Buyer delivers Gas to Sellers in connection with the
Resale Service. The initial Receipt Point(s), when determined by the mutual
agreement of the parties, shall be set forth in Exhibit "E" hereto and may be
changed by mutual agreement in the future. Neither Buyer's nor Sellers'
agreement shall be unreasonably withheld or delayed.

    1.34  "Requested Service Date" shall mean the Day that Buyer is obligated to
           ----------------------
begin accepting and Sellers are obligated to begin rendering the Resale Service
and/or Sales Service hereunder, as set forth in paragraph 3.7 hereof.

    1.35  "Resale Service" shall mean the service provided by Sellers to Buyer
           --------------
whereunder Sellers purchase Gas from Buyer at the Receipt Point(s) and resell
equal volumes, less Shrinkage, to Buyer at the Delivery Point. The Resale
Service volume shall be eighty-five thousand (85,000) Dekatherms per Day, at the
Delivery Point, after allowance for Shrinkage, as provided herein.

    1.36  "Sales Service" shall mean the service provided by Sellers to Buyer
           -------------
whereunder Sellers sell Buyer their system

                                      -7-
<PAGE>
 
supplies of Natural Gas at the Delivery Point. The Sales Service volume shall
range from a minimum volume of zero (0) to a maximum volume of fifty-eight
thousand, five hundred (58,500) Dekatherms per Day, as provided herein.

    1.37  "Shrinkage" shall mean any Natural Gas retained by Transporter(s) for
           ---------
fuel or line loss in connection with the transportation of Natural Gas on behalf
of Sellers.

    1.38  "Sellers" shall mean PSE&G and Elizabethtown.
           -------

    1.39  "Transporter(s)" shall mean the interstate pipeline companies
           --------------
originating in the production areas of Texas, Louisiana, the Gulf of Mexico and
the Gulf coast, that sell to and/or transport Natural Gas on behalf of Sellers.

    1.40  "Transportation Agreement(s)" shall mean any agreements under which
           --------------------------- 
Transporter(s) transport Natural Gas on behalf of Sellers from the Gulf coast
area to New Jersey.

    1.41  "Weighted Average Cost of Storage" or "WACS" shall mean [*]
           --------------------------------      ----

                                      -8-
<PAGE>
 
    1.42  "Weighted Average Transportation Demand Charge" or "WATDC" shall mean
           ---------------------------------------------      -----
[*].

                                   ARTICLE 2

                                  COMMITMENTS
                                  -----------

    2.1 Buyer's Commitments. Pursuant to the terms and conditions of this
        -------------------
Agreement, in order to satisfy the fuel requirements of the Facility, Buyer
commits:

          (a) to contract for a year-round supply of Natural Gas of eighty-five
          thousand (85,000) Dekatherms per Day, plus Shrinkage, which supply
          will be firm for the months of December through March, and to utilize
          the firm transportation capacity arranged by Sellers on
          Transporter(s)' systems;

          (b) to contract for such firm Gas supply by June 1 preceding each
          December through March period and to promptly furnish copies of such
          contracts to Sellers;

          (c) to purchase Natural Gas from Sellers pursuant to the Resale
          Service and Sales Service described in Article 3 hereof;

                                      -9-
<PAGE>
 
          (d) to acquire from Exxon's Linden Plant, and to dedicate to Sellers,
          one hundred thousand (100,000) barrels of butane storage capacity for
          exclusive use by Sellers during each November 15 through March period
          and to purchase an initial fill of one hundred thousand (100,000)
          barrels of butane by November 15 of each year as provided in paragraph
          3.4, and two (2) refills each equal to one hundred thousand (100,000)
          barrels of butane, for use by Sellers during each November 15 through
          March period; and

          (e) to act with due diligence and use reasonable efforts to obtain all
          necessary permits and regulatory approvals required to utilize the
          services provided herein and to cooperate with Sellers in seeking such
          approvals and permits.

    2.2 Sellers' Commitments. Pursuant to the terms and conditions of this
        --------------------
Agreement, in order to satisfy the fuel requirements of the Facility, Sellers
commit:

          (a) to increase Sellers' firm transportation capacity on
          Transporter(s)' systems for a period of at least fifteen (15) years,
          in order to have available sufficient Gas supply and transportation
          capacity on Transporter(s)' systems to render the services to be
          provided hereunder by the Requested Service Date, to utilize
          reasonable efforts to maintain sufficient capacity for the remaining
          term of this Agreement to render the services hereunder and to notify
          Buyer within fifteen (15) Days of the termination of any long-term
          firm Transportation Agreements with Transporter(s) covering volumes of
          at least twenty-five thousand (25,000) Dekatherms per Day;

          (b) to arrange for interruptible transportation of Buyer's Gas on
          Transporter(s)' systems if firm transportation capacity is not
          available and to provide interruptible Sales Service;

                                      -10-
<PAGE>
 
          (c) to sell Natural Gas to Buyer pursuant to the Resale Service and
          Sales Service described in Article 3 hereof;

          (d) following the Construction Conversion Date, to construct certain
          pipeline and related facilities necessary to furnish the services to
          be provided hereunder; and

          (e) to petition for BPU approval of the services to be rendered by
          Sellers hereunder and to act with due diligence, use reasonable
          efforts and cooperate with Buyer and Transporter(s) in seeking
          approvals from other Governmental Authority.

                                   ARTICLE 3

                                   SERVICES
                                   --------

    3.1  Testing Service. Prior to the Requested Service Date, if requested by
         ---------------
Buyer, Sellers shall make reasonable efforts to sell Gas to Buyer from their
systems' supplies and to arrange for the transportation of Gas through
Transporter(s)' systems for the testing of the Facility on Days other than
during a Peak Period. Sellers, in their sole discretion, may further provide
Extended Gas Service for the testing of the Facility during a Peak Period, if
requested by Buyer. If adequate service is not provided by Sellers for the
testing of the Facility, Buyer may purchase Gas from third-parties for such
testing and Sellers shall make reasonable efforts to have such Gas transported
through Transporter(s) and to deliver the same to the Facility providing doing
so does not materially adversely affect Sellers

                                      -11-
<PAGE>
 
or Sellers' other customers. Buyer shall have the exclusive right to use any
butane purchased under paragraph 3.4 for the testing of the Facility.

    3.2  Resale Service. Subject to the provisions hereof, on and after the
         --------------
Requested Service Date, Sellers shall purchase the Natural Gas acquired by Buyer
from third-parties in a volume of eighty-five thousand (85,000) Dekatherms per
Day, plus Shrinkage, at the Receipt Point(s), which supply will be firm for the
months of December through March, and shall resell the same quantity, less
Shrinkage, of Natural Gas to Buyer at the Delivery Point. Sellers shall provide
Resale Service of at least the Minimum Quantity of Gas and/or butane on a
continuous, year-round basis. Sellers shall not be obligated during any Day to
purchase Gas from Buyer at the Receipt Point(s) in quantities in excess of those
purchased by Buyer at the Delivery Point, adjusted for Shrinkage, or to deliver
to Buyer at the Delivery Point quantities in excess of those sold to Sellers at
the Receipt Point(s), adjusted for Shrinkage.

    3.3  Sales Service. Subject to the provisions hereof, on and after the
         -------------
Requested Service Date, in addition to the Resale Service, Sellers shall provide
a Sales Service to Buyer with deliveries ranging from a minimum volume of zero
(0) to a maximum volume of fifty-eight thousand, five hundred (58,500)
Dekatherms per Day, as nominated by Buyer pursuant to paragraph 3.12 hereof.

                                      -12-
<PAGE>
 
    3.4  Butane Service. Buyer shall provide the Butane Service described in
         --------------
paragraph 2.1(d) hereof. The initial [*] filling of the butane storage capacity
will be completed by [*] of each year and the additional two (2) refillings will
be made on the dates required by Sellers in an annual notification to be given
to Buyer not later than November 1 for butane deliveries to be made during the
ensuing winter season, unless the parties mutually agree otherwise. Buyer shall
bear all costs and liabilities attendant with this butane service, including the
cost of butane and butane storage, but excluding Sellers' costs, if any, related
thereto. [*] butane purchased by Buyer shall be dedicated for the exclusive use
at Buyer's Facility, unless Buyer, with Sellers' approval, elects to sell such
butane to a third-party. Sellers shall schedule the use of this Butane Service
pursuant to an operating schedule determined by Sellers; provided, however (i)
such schedule shall not interfere with Buyer's obligations under the Power
Purchase Agreement and (ii) butane shall be scheduled in seven thousand (7,000)
barrel per Day increments. Sellers commit to use of the [*] butane contracted
for by Buyer by March 31 of each winter season unless the parties mutually agree
otherwise. If requested by Sellers, Buyer shall use reasonable efforts to
contract for

                                      -13-
<PAGE>
 
additional butane storage capacity, arrange for additional butane shipments, and
utilize additional butane, if operationally and environmentally possible, the
cost of which shall be borne by Sellers.

    3.5  Extended Gas Service. Sellers, in their sole discretion, may provide
         --------------------
Extended Gas Service to Buyer during a Peak Period, in excess of the Resale
Service and any Sales Service provided hereunder, or for testing of the
Facility, if such service is requested by Buyer.

    3.6  Service Conditions. Buyer's commitment to provide the Butane Service in
         ------------------
paragraph 3.4 is contingent upon Sellers' providing the Resale Service and Sales
Service at the minimum levels provided hereunder. Sellers' commitment to provide
uninterrupted service of the Minimum Quantity hereunder is contingent upon
Buyer's providing an uninterrupted Gas supply of eighty-five thousand (85,000)
Dekatherms per Day and upon Buyer's providing the [*] Butane Service in
accordance with the schedule specified by Sellers and accomplishing the delivery
of the butane to the Facility when designated by Sellers.

    In addition to any other remedy Sellers may have under this Agreement,
failure by Buyer to provide all or part of the Resale Service supply (subject to
the tolerance set forth in paragraph 5.3) during a Peak Period for any reason,
including force majeure, shall proportionately reduce Sellers' commitment

                                      -14-
<PAGE>
 
to provide the otherwise uninterruptible Minimum Quantity of Resale Service by
the amount of any such failure. Furthermore, failure by Buyer to provide the
Butane Service during a Peak Period in accordance with the operating schedule
established by Sellers shall permit Sellers to suspend the otherwise
uninterruptible Minimum Quantity of Resale Service; provided, however,
notwithstanding the other provisions of this paragraph, if Buyer's failure to
meet said schedule for butane deliveries does not coincide with any Peak
Period(s) or does not materially adversely affect Sellers' ability to render
service to Buyer during a Peak Period, Buyer shall nevertheless be entitled to
receive the Minimum Quantity hereunder.

    3.7 Commencement of Service. On or before the earlier of the Construction
        -----------------------
Conversion Date or April 1, 1991, Buyer shall give Sellers written notice of the
Requested Service Date, which Requested Service Date shall be no earlier than
[*] after Sellers' receipt of such notice and no later [*], unless otherwise
agreed by the parties hereto. On or before October 1, 1991, Buyer shall have the
right to change the Requested Service Date by giving Sellers written notice
thereof, which change shall not vary from the initially requested date by more
than [*] Days and, in any event, shall be no earlier than March 1, 1992, and no
later than July 1, 1993. The Requested Service Date may be changed by mutual
agreement of the parties.

                                      -15-
<PAGE>
 
    3.8 Failure To Commence Service. If Buyer is prepared to accept, but Sellers
        ---------------------------
are unable to provide, the services hereunder on the Requested Service Date,
Sellers shall have no liability to Buyer providing Sellers have used due
diligence to have such service available, and Sellers shall continue to make all
reasonable efforts to place themselves in a position to provide the services
contemplated hereunder. Under such circumstances, [*] , Sellers shall
nevertheless provide [*] transportation for the Minimum Quantity hereunder and
arrange for [*] transportation of the balance of the Resale Service and Sales
Service volumes on Transporter(s)' systems until sufficient firm transportation
capacity is acquired by Sellers to satisfy Buyer's requirements hereunder. Under
such circumstances, [*] through March, Sellers shall make reasonable efforts to
provide [*] transportation of the Minimum Quantity hereunder and shall arrange
for the [*] transportation of the balance of the Resale Service and Sales
Service volumes on Transporter(s)' systems until sufficient firm transportation
capacity is acquired. If Sellers have not acquired sufficient firm
transportation capacity on Transporter(s)' systems to render the services
hereunder following the later of the Requested Service Date or the Date of
Initial Commercial Operation of the Facility or, after acquiring such firm
capacity, if Sellers do not retain

                                      -16-
<PAGE>
 
the same during the term of this Agreement, Buyer may contract with third
parties to purchase fuel supplies and firm transportation capacity for the
Facility to supplement any services provided by Sellers hereunder. Buyer may
continue such purchases until sixty (60) days following Buyer's receipt of
Sellers' written notice that it can provide the required services hereunder.
Buyer shall have no obligation to perform under paragraph 3.4, and shall have
the exclusive use of any butane purchased thereunder and to modify the operating
schedule as it sees fit, until Sellers commence Resale Service and Sales Service
hereunder.

    3.9  Failure To Accept Services. If Sellers are prepared to provide the
         --------------------------
services hereunder on or after the Requested Service Date and Buyer has not
achieved Commercial Operation of the Facility by such date, Buyer shall
reimburse Sellers [*]

                                      -17-
<PAGE>
 
[*]

   3.10 [*] paragraph 3.9, providing Sellers have furnished to Buyer on or
before such date a written representation that Sellers have entered into
contracts to acquire additional firm transportation capacity on Transporter(s)'
systems which, when in service together with other transportation capacity
available to Sellers, will be sufficient to render the services to be provided
hereunder. A copy of Sellers' written representation is attached hereto and made
a part hereof as

                                      -18-
<PAGE>
 
Letter No. 1 in Exhibit "H". If Sellers have not furnished Buyer such written
representation by the Construction Conversion Date, Buyer's obligation to
provide the letter of credit shall be suspended until [*] Days following
Buyer's receipt of Sellers' written representation.

          Within [*] Days of Buyer's receipt of Sellers' written representation
that the FERC has approved Transporter(s)' application(s) to furnish Sellers
additional firm transportation capacity on their systems which, when in service
together with other transportation capacity available to Sellers, will be
sufficient to permit Sellers to render firm delivery services for at least the
Minimum Quantity hereunder in accordance with the terms of this Agreement, Buyer
shall provide Sellers an additional irrevocable letter of credit [*],as further
security for Buyer's potential [*] reimbursement obligation. A copy of Sellers'
written representation is attached hereto and made a part hereof as Letter No. 2
in Exhibit "H".

          Within [*] Days of Buyer's receipt of Sellers' written
representation that they are prepared to render Buyer firm, uninterruptible
transportation service of at least the Minimum Quantity on a year-round basis in
accordance with the terms of this Agreement, Buyer shall provide Sellers an
additional irrevocable letter of credit [*] as final security for Buyer's

                                      -19-
<PAGE>
 
potential [*] reimbursement obligation. Upon the receipt of such letter of
credit, Sellers shall have the obligation to provide firm transportation of the
Minimum Quantity on the later of the Requested Service Date or the date such
letter of credit is furnished, as provided in this Agreement. A copy of Sellers'
written representation is attached hereto and made a part hereof as Letter No. 3
in Exhibit "H".

          The conditions imposed for Buyer's posting of the [*] letter of credit
must be satisfied before Buyer is required to furnish the other letters of
credit hereunder. Likewise, the conditions imposed for Buyer's posting of the
[*] letter of credit must be satisfied before Buyer is required to furnish the
last letter of credit hereunder.

          If Buyer fails to reimburse Sellers [*] in accordance with paragraph
3.9, Sellers may draw upon the letter(s) of credit for the amounts due but not
paid. Buyer shall have no obligation to maintain any balance under the letter(s)
of credit [*] Days after the Date of Initial Commercial Operation of the
Facility. Prior to the Date of Initial Commercial Operation of the Facility,
Buyer shall have no obligation to reimburse Sellers [*] other than the amounts
specified in paragraph 3.9 hereof.

    3.11 Delayed Commencement of Service. If Buyer is unable to accept, but
         -------------------------------
Sellers are prepared to provide, the services

                                      -20-
<PAGE>
 
hereunder on or after the Requested Service Date, Sellers shall not be obligated
to commence services hereunder until [*] following Sellers' receipt of written
notice from Buyer of the new date on which Buyer requests Sellers to commence
Resale Service and Sales Service hereunder. In such event, Sellers shall use
reasonable efforts to commence services as soon as possible after the receipt of
such notice.

    3.12 Nominations. Whenever reasonably requested by Sellers, Buyer shall
         -----------
provide Sellers with its best forecast of the Gas requirements for Sales Service
and Resale Service. At least twenty-four (24) hours in advance of each Day,
Buyer shall give Sellers notice of its best estimate of the quantities of Sales
Service and Resale Service that Buyer will require for the next Day to enable
Sellers to comply with the scheduling provisions of Transporter(s). Sellers
shall not be obligated, but shall use reasonable efforts to provide, volumes in
excess of those specified in such notification by Buyer. In addition to any
butane used at the Facility in accordance with paragraph 3.15 hereof, unless
specifically agreed otherwise by the parties, Resale Service deliveries shall be
scheduled to meet the first eighty-five thousand (85,000) Dekatherms per Day of
Gas required at the Facility. Sales Service deliveries shall be scheduled to
meet the remaining Gas requirements of the Facility. Buyer shall receive and
Sellers shall deliver at the Delivery Point the nominated quantities as nearly
as

                                      -21-
<PAGE>
 
possible at uniform hourly rates. Buyer may reduce the scheduled daily
quantities hereunder during any Day, without regard to any prior nomination, by
notifying Sellers, as far in advance as possible but in no event later than [*]
any reduction in the nominated quantities and twenty-four (24) hours in advance
of a reduction in combined Resale Service and Sales Service volumes in excess of
[*] Dekatherms per Day. Any such changes shall be kept to the minimum permitted
by operating conditions or as required by the Power Purchase Agreement. Buyer's
notices shall also include the expected duration of such reduction.

    3.13 Interruptions; Minimum Quantity. Notwithstanding anything to the
         -------------------------------
contrary herein, upon [*] notice to Buyer, during any Peak Period, Sellers may
fully interrupt the Sales Service and may curtail the Resale Service down to the
Minimum Quantity. Sellers' obligation to deliver the Minimum Quantity shall be
subject to Buyer fulfilling the commitments set forth in paragraph 3.6 hereof.
Sellers shall have the option of substituting butane for Natural Gas upon [*]
notice to satisfy their Resale Service Minimum Quantity obligation. If Buyer
uses quantities of Gas in excess of the quantities provided herein during
periods of interruption or curtailment in Peak Periods, Sellers shall have the
right to limit deliveries to the authorized quantities and all such unauthorized
overrun quantities shall be subject to the penalty

                                      -22-
<PAGE>
 
provided in PSE&G's CIG or successor tariff for Gas used during interruptions.

    3.14 Quantity Adjustments. No later than [*] Days prior to the end of the
         --------------------
first Annual Period, Buyer and Sellers shall negotiate in good faith to adjust
the quantities of Sales Service Gas to be provided hereunder, to correspond with
the actual fuel requirements of the Facility needed to satisfy Buyer's
obligations under the Power Purchase Agreement. Such adjustment shall not exceed
seven thousand (7,000) Dekatherms per Day. After the fifteenth (15th) Annual
Period, Buyer and Sellers shall negotiate in good faith to further adjust the
quantities of Gas and butane to be provided hereunder, to correspond with the
anticipated fuel requirements of the Facility to reflect any anticipated changes
in electricity purchases by Con Ed under the Power Purchase Agreement.

    3.15 Exclusivity. Except for the butane purchased pursuant to this Agreement
         -----------
and up to 4,000 barrels per Day of butane purchased from Exxon during the May 1
through November 1 period, Buyer agrees that Natural Gas transported and/or sold
by Sellers under this Agreement, including volumes delivered pursuant to
paragraph 3.1 hereof, shall be the sole source of fuel for the Facility during
the term of this Agreement; provided, however, during periods of service
interruption or curtailment by Sellers hereunder or during periods when all of
the Sales Service Gas and required firm transportation capacity

                                      -23-
<PAGE>
 
for Resale Service is not available, Buyer may purchase and/or have transported
Natural Gas or other fuels from suppliers other than Sellers to the extent
needed by Buyer to supplement the quantities available from Sellers hereunder.
During such periods of fuel substitution, Sellers will cooperate with Buyer to
utilize Sellers' local distribution systems on an economically appropriate and
non-discriminatory basis.

    3.16 Emergency Curtailments. Sellers shall have the right to curtail
         ----------------------
deliveries hereunder in the event of an emergency on Transporter(s)' or Sellers'
systems which affect service hereunder. Buyer shall be responsible for any
penalties assessed by Transporter(s) due to Buyer's refusal to reduce Natural
Gas usage after notification of any such emergency.

                                   ARTICLE 4

                               RATES AND CHARGES
                               -----------------

    4.1  Testing Service. The price per Dekatherm payable by Buyer to Sellers
         ---------------
for the delivery of any Gas for the testing of the Facility prior to the
Requested Service Date shall be equal to the price payable for the respective
services under paragraphs 4.2, 4.3 and 4.5 hereof. If Sellers do not have
sufficient transportation capacity and/or Gas supplies to render service for the
testing of the Facility and Buyer purchases Gas from a third-party for that
purpose, the price

                                      -24-
<PAGE>
 
per Dekatherm payable by Buyer to Sellers for the delivery of such third-party
Gas shall be equal to the sum of:

          (a) [*]

          (b) [*]

    4.2 Resale Service. The price per Dekatherm payable by Buyer for the Resale
        --------------
Service in any month shall be equal to the sum of:

          (a) [*]

          (b) [*]

          (c) [*]

    4.3 Sales Service. The price per Dekatherm payable by Buyer for the Sales
        -------------
Service in any month during the period from April 1 through November 30 shall be
equal to the sum of:

          (a) [*]

          (b) [*]

                                      -25-
<PAGE>
 
          [*]

          (c) [*]

    For the period from December 1 through March 31, the monthly price per
Dekatherm payable by Buyer for the first thirty thousand (30,000) Dekatherms per
Day of Sales Service shall be equal to the sum of (a), (b) and (c) of this
paragraph 4.3. For any amounts of Sales Service exceeding [*] during said
December 1 through March 31 period, the price payable by Buyer per Dekatherm for
such amounts each month shall be equal to the sum of (a), (b) and (c) of this
paragraph 4.3 plus an additional charge equal to Sellers' [*].

    4.4 Butane Service. Buyer shall be responsible for paying all costs
        --------------
associated with the [*] thousand [*] barrels of Butane Service during each
November 1 through March 31 period, as provided in paragraph 3.4. Buyer shall
not be obligated to pay Sellers for the basic [*] barrels of Butane Service
utilized by Buyer in lieu of Natural Gas hereunder. If Butane Service in excess
of [*] thousand [*] barrels during each November 1 through March 31 period is
provided pursuant to Sellers' request under paragraph 3.4,

                                      -26-
<PAGE>
 
Sellers shall pay all incremental costs for such excess Butane Service and Buyer
shall pay for such butane deliveries at a price per Dekatherm equal to the price
per Dekatherm for Resale Service Gas hereunder.

    4.5 Extended Gas Service. The price payable by Buyer per Dekatherm for the
        --------------------
Extended Gas Service in excess of the Resale Service and any Sales Service shall
be equal to the sum of:

          (a) [*]

          (b) [*]

          (c) [*]

                                   ARTICLE 5

                             DELIVERY AND RECEIPT
                             --------------------

    5.1  Receipt Point(s). The Natural Gas to be received by Sellers from Buyer
         ----------------
in connection with the Resale Service hereunder shall be delivered at the
Receipt Point(s).

                                      -27-
<PAGE>
 
    5.2  Delivery Point. The Natural Gas to be sold by Sellers to Buyer in
         --------------
connection with the Resale Service, Sales Service and Extended Gas Service
hereunder shall be delivered at the Delivery Point.

    5.3  Balancing. The quantity of Natural Gas, less Shrinkage, delivered or
         ---------
caused to be delivered by Buyer to Sellers at the Receipt Point(s) in connection
with the Resale Service hereunder on any Day shall be redelivered by Sellers to
Buyer at the Delivery Point, balanced on a heat-content basis. Any monthly
imbalance between Buyer's deliveries at the Receipt Point(s) and Buyer's actual
usage of Natural Gas in connection with the Resale Service shall be kept to a
minimum and, in any event, shall not exceed [*] of Buyer's actual usage of
Resale Service Gas hereunder.

          In the event an imbalance between monthly receipts and deliveries
exists hereunder, Buyer and Sellers shall immediately take whatever action is
required to eliminate such imbalance within thirty (30) Days after receipt of
written notification of the same. If Buyer's monthly usage of Resale Service Gas
at the Facility varies from Buyer's monthly deliveries of Gas at the Receipt
Point(s) by more than [*] during the period December through March, for any such
variation above [*] Buyer shall be subject to a penalty equal to the [*]
multiplied by such variation. If Buyer's monthly usage of Resale Service Gas at
the Facility

                                      -28-
<PAGE>
 
varies from Buyer's monthly deliveries of Gas at the Receipt Point(s) by more
than [*] percent [*] during the period April through November, for any such
variation above [*] percent [*] Buyer shall be subject to a penalty of [*] per
Dekatherm, as adjusted by changes in Sellers' [*] as set forth below.

          Of the total quantity of Gas purchased by Buyer on each Day, the
Resale Service quantity used shall be deemed to be the nominated quantity under
paragraph 3.12 or the total quantity, whichever is less. The Sales Service
quantity used shall be the difference between the total quantity used and the
Resale Service quantity used. Buyer shall be responsible on a daily basis for
assuring that its suppliers deliver to Transporter(s) at the Receipt Point(s)
the quantity of Resale Service Gas scheduled by Buyer in its nomination to
Sellers.

          Imbalances on a daily basis between the nominated Sales Service and
Resale Service quantities and the quantities actually used, in excess of [*] 
percent [*] of the nominated quantity, shall be subject to a penalty of [*] per
Dekatherm. This [*] penalty shall be adjusted after the first Annual Period or
December 31, 1992, whichever first occurs, with any percentage change in
Sellers' [*], relative to the [*] which were in effect during the first Annual
Period or 1992, as appropriate.

                                      -29-
<PAGE>
 
          Buyer shall be obligated to pay the higher of the monthly or daily
penalties assessed by Sellers, if any, but shall not be obligated to pay both
penalties. Furthermore, if any imbalance related to Buyer's operations under the
Resale Service and Sales Service hereunder results in any penalties being
applied to Sellers by Transporter(s), Sellers may elect to make Buyer
responsible for such penalties in lieu of the penalties for imbalances provided
in this paragraph 5.3 related to any such penalty by Transporter(s).

                                   ARTICLE 6

                   POSSESSION, TITLE, WARRANTY AND LIABILITY
                   -----------------------------------------

    6.1  Transfer at Receipt Point(s). Title to Gas sold by Buyer to Sellers in
         ----------------------------
connection with the Resale Service hereunder will pass from Buyer to Sellers at
the Receipt Point(s), unless Buyer and Sellers mutually agree to transfer title
at another point. Until the Gas reaches the Receipt Point(s), Buyer will be
deemed to be in exclusive control and possession of, and fully responsible for,
such Gas. After the Gas has reached the Receipt Point(s), Sellers will be deemed
to be in exclusive control and possession, and fully responsible for, such Gas
until it reaches the Delivery Point.

    6.2 Transfer at Delivery Point. Title to Gas sold by Sellers to Buyer in
        --------------------------
connection with the Resale Service will pass from Sellers to Buyer at the
Delivery Point, unless Buyer

                                      -30-
<PAGE>
 
and Sellers mutually agree to transfer title at another point. Until the Gas
reaches the Delivery Point, Sellers will be deemed to be in exclusive control
and possession of, and fully responsible for, such Gas. After the Gas has
reached the Delivery Point, Buyer will be deemed to be in exclusive control and
possession of, and fully responsible for, such Gas.

    6.3  Sales Service Gas. As between the parties hereto, Sellers will be
         -----------------
deemed to be in exclusive control and possession of, and fully responsible for,
all Gas purchased by Buyer where Sellers are providing Sales Service until such
time as Sellers deliver the Gas to the Delivery Point after which Buyer shall be
deemed to be in exclusive control and possession of, and fully responsible for,
such Gas.

    6.4  Title. Buyer, as to all Gas delivered by it to Sellers, and Sellers, as
         -----
to all Gas delivered by them to Buyer, warrant for themselves, their successors
and assigns, that each will at the time of delivery to the other party, have
good and merchantable title to all such Gas or the good right to deliver such
Gas free and clear of all liens, encumbrances and claims whatsoever, with the
exception of the security interest in Buyer's Gas held by GEPFC or any
successors-in-interest. Each party will indemnify the other, defend and save it
harmless from all suits, actions, debts, accounts, damages, costs, losses and
expenses arising from or out of adverse claims to such Gas by any third party or
parties, including claims by any

                                      -31-
<PAGE>
 
third party or parties for any royalties, taxes, license fees or charges
applicable to such Gas or to the delivery thereof.

    6.5  Insurance. Sellers shall maintain liability coverage and/or insurance
         ---------
on their facilities utilized and activities performed in connection with this
Agreement, sufficient to cover the cost of any injury sustained by Buyer and
caused by Sellers. Buyer shall maintain liability insurance on its facilities
utilized and activities performed in connection with this Agreement, sufficient
to cover the cost of any injury sustained by Sellers and caused by Buyer.

                                   ARTICLE 7

                                     TERM
                                     ----

    7.1  Base Term. The term of this Agreement shall be twenty-five (25) Annual
         ---------
Periods (herein referred to as "Base Term"); provided, however, the Sales
Service to be provided hereunder shall terminate after fifteen (15) Annual
Periods, and shall not extend beyond June 30, 2008, unless extended as
hereinafter provided.

    7.2  Extended Term. At the end of the thirteenth (13th) Annual Period of
         -------------
this Agreement, Sellers may elect to extend the fifteen (15) Annual Period term
of the Sales Service for an additional ten (10) Annual Periods. In the event
Sellers fail to do so, the Resale Service provided hereunder shall be increased
during Annual Periods sixteen (16) through

                                      -32-
<PAGE>
 
twenty-five (25) from eighty-five thousand (85,000) Dekatherms per Day to one
hundred and forty-three thousand, five hundred (143,500) Dekatherms per Day, in
order to replace the terminated Sales Service hereunder. At the end of the Base
Term, the Resale Service and/or the Sales Service shall be automatically renewed
for two (2) successive five (5) Annual Periods, the first of which will commence
with the expiration of the Base Term, unless either Party elects to terminate
this Agreement at the expiration of the Base Term or at the expiration of the
first five-Annual Period renewal term. Such termination shall be valid only if
the terminating party provides written notice of its intent to terminate to the
other party at least six (6) full Annual Periods prior to the expiration of the
applicable term.

    7.3  Termination. This Gas Service Agreement shall be subject to termination
         -----------
by either party upon thirty (30) Days prior written notice if for any reason,
including force majeure, Commercial Operation of the Facility does not commence
by September 12, 1995.

                                   ARTICLE 8

                            ACCOUNTING AND PAYMENT
                            ----------------------

    8.1 Payment. By the tenth (10th) Day of each month, Buyer will calculate all
        ------- 
sums payable to it by Sellers for deliveries at the Receipt Point(s) under this
Agreement during

                                      -33-
<PAGE>
 
the preceding month and will deliver its invoice to Sellers showing thereon full
billing details. By the fifteenth (15th) Day of the month, Sellers will
calculate all sums payable to them by Buyer for services during the same period,
and Sellers will deliver their invoice to Buyer showing thereon full billing
details. If Sellers' invoice amount to Buyer exceeds Buyer's invoice amount to
Sellers, the difference will be due and payable to Sellers by Buyer by the
twenty-first (21st) Day of the month. If Buyer's invoice to Sellers exceeds
Sellers' invoice to Buyer, the difference will be due and payable to Buyer by
Sellers by the twenty-first (21st) Day of the month. If Con Ed fails to pay
Buyer under the Power Purchase Agreement by the twentieth (20th) Day of the
month, Buyer's obligation to pay Sellers shall be suspended from the twenty-
first (21st) Day of the Month until one (1) Day following Buyer's receipt of Con
Ed's payment, but, in such a case, Buyer's obligation to pay Sellers shall not
be suspended past the twenty-fifth (25th) Day of the month. If Buyer or Sellers
fail to render either invoice by the due date for such invoice, the relevant due
date of the payment by the party receiving such late notice shall be extended by
a corresponding number of Days.

          If an index, rate, publication or other source of information required
for the adjustment of any price, charge or credit under this Agreement is
unavailable on the effective date for such adjustment, Sellers' or Buyer's
invoice will be

                                      -34-
<PAGE>
 
calculated using the best available estimate of such adjustment. When the
information necessary for calculation of the actual adjustment becomes
available, such invoice will be recalculated and any net charge or credit
resulting from the recalculation will be reflected on the next month's invoice.

    8.2  Mode of Payment. Each payment under this Agreement will be made by
         ---------------
interbank wire transfer to the bank address designated in writing by Sellers or
Buyer or to such other address as Sellers or Buyer may from time to time
designate by written notice.

    8.3  Auditing. Each party will have the right at reasonable hours to examine
         --------
the books, records, and charts of the other party to the extent reasonably
necessary to verify the accuracy of any invoice, payment, measurement,
calculation, or determination made pursuant to the provisions of this Agreement;
provided, that if any such examination requires access to confidential
information, the release of which would be harmful to Sellers' or Buyer's
competitive position, Buyer or Sellers, as the case may be, will select an
examiner who is not in a position to benefit from such confidential information
and such examiner will execute an agreement to maintain the confidentiality of
the information to be examined. If any such examination reveals, or if either
party discovers, any error or inaccuracy in its own or the other party's
invoice, calculation, measurement or determination, then proper

                                      -35-
<PAGE>
 
adjustment and correction thereof will be made as promptly as practicable
thereafter, except that no adjustment or correction will be made if more than
one year has elapsed since the error or inaccuracy occurred.

    8.4  Failure to Pay. If either party fails to pay any amount payable to the
         --------------
other hereunder when due, interest thereon will accrue and be payable from the
date on which payment was due until the date payment is made. The rate of such
interest will be the Prime Rate published weekdays in the Wall Street Journal,
plus two percent (2%), provided that the interest rate provided herein may never
exceed the highest rate of interest permitted by applicable law. If any such
failure to pay continues for ten (10) Days after receipt of written protest by
the party to whom such amount is due, such party may suspend its performance
under this Agreement and, in addition, if such failure to pay continues for
thirty (30) Days, such party may terminate this Agreement upon written notice to
the other party; provided, however, that if either party in good faith disputes
the amount of any such bill or any part thereof, and pays to the other party
such amount as it concedes to be correct, and at any time thereafter within ten
(10) Days of a demand by the billing party, furnishes good and sufficient surety
bond of GEPFC or General Electric Capital Corporation or other security
acceptable to the other party, guaranteeing payment to the billing party of the
amount in dispute, then the

                                      -36-
<PAGE>
 
billing party will not be able to suspend performance under this Agreement or
seek to terminate this Agreement. The exercise of any such right will be in
addition to any and all remedies otherwise available to such party.

    8.5  Overpayment. If either party pays any amount shown due and owing upon
         -----------
the invoice of the other party, and such amount is subsequently determined by
agreement, arbitration or judgment of court not to have been due and owing when
paid, the payee will refund such amount to the paying party together with
interest from the date of payment to the date of refund at the Prime Rate
published weekdays in the Wall Street Journal, provided that the interest rate
provided herein may never exceed the highest rate of interest permitted by
applicable law.

                                   ARTICLE 9

                      MEASUREMENT AND DELIVERY CONDITIONS
                      -----------------------------------

    9.1  Metering. The parties recognize that the Receipt Point(s) are operated
         --------
under the control of Transporter(s) and that Gas delivered hereunder shall be
measured by the operation of the facilities at the Receipt Point(s) in
accordance with the Transportation Agreement(s). The measurement and tests to
determine the quality and other characteristics of the Natural Gas shall be
performed by the operator of the facilities at the

                                      -37-
<PAGE>
 
Receipt Point(s) in accordance with Transporter(s)' FERC Gas Tariff(s).

          Sellers will have installed and maintain at their own expense such
measuring equipment, including a meter of suitable accuracy of a type
customarily used in the industry as is required, to record the quantities and
heating content of Gas sold and/or delivered at the Delivery Point hereunder.
Sellers will be responsible for maintaining the accuracy of such measuring
equipment and will test such equipment at reasonable intervals, or as requested
by Buyer, but no more frequently than once in any sixty (60) Day period. Buyer
may have its representatives present at the test of such equipment. Sellers will
follow the standards of the BPU with regard to the testing and accuracy of
measuring equipment. Buyer may maintain at its own expense check measuring
equipment; provided, however, Sellers' measuring equipment shall be used for all
determinations of quantities delivered hereunder.

    9.2  Pressure. Natural Gas delivered to Sellers at the Receipt Point(s)
         --------
hereunder shall be at a pressure sufficient to enter Transporter(s) facilities
and shall meet Transporter(s) terms and conditions for pressure (including the
maximum allowable operating pressure at each Receipt Point). Natural Gas
delivered by Sellers to Buyer at the Delivery Point shall be at Sellers' system
operating pressure, which shall be no lower than 375 psig.

                                      -38-
<PAGE>
 
    9.3  Heating Content. The Dekatherm content of the Gas delivered hereunder
         ---------------
shall be determined separately for each Receipt Point, each month by
Transporter(s) or the operator of such facility in accordance with standard
testing methods specified in Transporter(s)' FERC Gas Tariff. The results of any
tests by Transporter(s) to determine Dekatherm content shall be corrected to
reflect actual conditions of delivery. In the absence of a mutually agreeable
alternative, the parties agree to rely upon the results of tests conducted by
the Transporter(s).

    9.4 Quality. Natural Gas delivered to Sellers at the Receipt Point(s) on
        -------
Transporter(s)' pipeline systems shall meet the minimum quality specifications
of Transporter(s) specified in the Transportation Agreement(s) and any
applicable provisions of Transporter(s)' FERC Gas Tariffs.

                                  ARTICLE 10

                                  FACILITIES
                                  ----------

    10.1 Facilities Installation. Sellers shall be required to construct certain
         -----------------------
facilities to provide the services contemplated hereunder to the Facility. Such
facilities shall include a pipeline from Transporter(s)' and/or Sellers' systems
to the Delivery Point, in addition to necessary metering and regulating devices.
The cost of those facilities is estimated [*]. Upon thirty (30) days

                                      -39-
<PAGE>
 
prior written notice of Sellers' intent to commit to spend any significant sums
for the permitting and construction of the subject facilities, Buyer agrees to
provide as security irrevocable letters of credit payable to Sellers for the
approximate amount of such estimates, in [*] increments, up to a total maximum
obligation of [*]. Buyer shall not be required to provide the first letter of
credit prior to the Construction Conversion Date. This obligation and the
letters of credit will be reduced by [*] for every Dekatherm of Gas that Sellers
deliver to the Facility. If by the earlier of June 1, 1996, the end of the [*]
or at such time that Buyer is no longer proceeding with due diligence toward the
Commercial Operation of the Facility, any balance remains under the letter of
credit, Buyer will pay Sellers such balance within ten (10) Days from receipt of
a written demand for such payment or, absent payment by this date, Sellers may
draw upon the letters of credit for the same, but only up to the amount of
expenses incurred or committed to by Sellers for such facilities, less any
reductions provided for herein.

                                  ARTICLE 11

                                 FORCE MAJEURE
                                 -------------

    11.1 Definition and Illustrations. The term "force majeure" means an event
         ----------------------------
(i) that was not within the reasonable control of the party claiming its
occurrence; (ii) that could

                                      -40-
<PAGE>
 
not have been prevented or avoided by such party through the exercise of due
diligence and reasonable care; and (iii) that materially impairs the ability of
such party to perform its obligations under this Agreement. Events that may give
rise to a claim of force majeure include, but are not limited to:

          (a) Acts of God, earthquakes, epidemics, fires, floods, hurricanes,
          landslides, lightning, storms, washouts, freezing of wells or lines of
          pipe;

          (b) Acts of the public enemy, wars, blockage, insurrections, riots,
          civil disturbances and arrests;

          (c) Strikes, lockouts or other industrial disturbances;

          (d) Explosions, breakage, accidents to machinery or lines of pipe;

          (e) Inability to obtain or unavoidable delay in obtaining necessary
          materials, equipment, easements, franchises or permits;

          (f) Failure, for reasons of force majeure, of any entity to deliver
          gas under firm contracts, or to transport Gas delivered or to be
          delivered under this Agreement;

          (g) The order of any court having jurisdiction while the same is in
          force and effect;

          (h) The imposition by a Governmental Authority of laws, conditions,
          limitations, rules or regulations that materially impair the ability
          of Buyer or Sellers to perform their obligations under this Agreement,
          including, but not limited to, actions or inactions restricting the
          ability of Buyer or Sellers to acquire Gas or obtain transportation of
          Gas;

          (i) The imposition by an operator of facilities (other than Buyer or
          Sellers),

                                      -41-
<PAGE>
 
          at any point at which Gas to be purchased and sold under this
          Agreement is received by or delivered to Buyer, or Sellers, of quality
          and pressure conditions that materially impair the ability of either
          Buyer or Sellers to perform their obligations under this Agreement;

          (j) The occurrence of any event of "force majeure" under Article 20 of
          the Power Purchase Agreement; and

          (k) Sellers' or Buyer's inability to extend or reestablish firm
          transportation or supply agreements during the term of this Agreement
          sufficient to provide the services hereunder.

    11.2 Notice and Suspension. If an occurrence of force majeure renders either
         --------------------- 
party wholly or partially unable to carry out its obligations under this
Agreement, such party will promptly give the other party notice and full
particulars of the occurrence in writing or by telecopier or telegraph. The
obligations of both parties under this Agreement will be suspended to the extent
that they are affected by the occurrence. Such suspension will be effective only
during the continuance of the inability to perform caused by the force majeure
occurrence, and will not apply to the obligation to pay when due any charges
accrued prior to the event of force majeure under this Agreement, to Buyer's
obligation to reimburse Sellers [*] applicable to the Resale Service for force
majeure occurrences of five (5) Days or less duration, or to Buyer's obligations
under paragraphs 3.9, 3.10 and 10.1 hereof.

                                      -42-
<PAGE>
 
    11.3 Remedial Actions. A party claiming force majeure as grounds for
         ----------------
suspension of its performance under this Agreement shall proceed with due
diligence and with all reasonable dispatch to remedy the cause of its inability
to perform and to put itself in position to resume its obligations.

    11.4 Settlements of Disputes. The requirement of this Article that an
         -----------------------
inability to perform caused by an event of force majeure be remedied with all
reasonable dispatch does not obligate a party to settle a strike, lockout or
other industrial dispute or disturbance by acceding to the demands of an
opposing party. Any such settlement will be entirely within the discretion of
the party having the difficulty.

    11.5 Termination Rights. If an occurrence of force majeure renders Buyer
         ------------------
unable to carry out its obligations hereunder and such inability continues for a
period of [*] following such occurrence, Sellers shall have the right to
terminate this Agreement upon [*] days prior written notice to Buyer; provided,
however, Sellers shall not have the right to terminate this Agreement until [*]
following such occurrence, assuming Buyer's inability to perform continues
during that period, if Buyer pays Sellers on a monthly basis after such [*]
month period Sellers' [*] allocable to the Minimum Quantity. If an occurrence of
force majeure renders Sellers unable to carry out their obligations hereunder
and such inability continues for a period

                                      -43-
<PAGE>
 
of [*] following such occurrence, Buyer shall have the right to terminate that
portion of the service that has been suspended by reason of the force majeure,
upon thirty (30) days prior written notice to Sellers.

    11.6  Inapplicability to Letters of Credit. The provisions of this Article
          ------------------------------------
11 shall not apply to or in any way diminish Buyer's obligation to furnish, or
Sellers' rights to draw upon, the letters of credit provided by Buyer under this
Agreement.

                                  ARTICLE 12

                            LIMITATION OF LIABILITY
                            -----------------------

    12.1 Liability. Neither party nor its officers, directors, partners, agents,
         ---------
servants, employees, affiliates, parent, subsidiaries or respective successors
or assigns shall be liable to the other party for claims for punitive,
incidental, special, indirect or consequential damages ("Damages") whether such
claim is based on a cause of action based in warranty, negligence, strict
liability, contract, operation of law or otherwise, except where such Damages
arise out of, relate to or result from the gross negligence of, or the willful
disregard by, a party of an obligation under this Agreement.

    12.2 Hold Harmless. Each party shall hold harmless the other party, its
         -------------
parent company, subsidiaries, affiliates, successors and assigns, as well as all
other corporations

                                      -44-
<PAGE>
 
substantially all of whose stock is owned directly or indirectly by the parties
and each and every of its past, present or future officers from and against any
and all third-party loss, cost, or expense (including reasonable attorney's
fees) arising from any act or failure to act by such party related to this
Agreement.

                                  ARTICLE 13

                            DEFAULTS; RIGHT TO CURE
                            -----------------------

    13.1 Defaults. Except as otherwise provided for herein, if either Buyer or
         --------
Sellers shall fail to perform any obligations imposed upon them under this
Agreement (except where such failure shall be excused under other provisions
hereof), then in such event the party not in default may, at its option (without
waiving any other remedy for breach thereof), notify in writing the party in
default, stating specifically the nature of the default and declaring it to be
the intention of the party giving such notice to cancel the Agreement if the
default is not cured as hereinafter provided. The party in default shall have
[*] after receipt of the aforesaid notice in which to remedy or remove the cause
or causes stated in the notice. If within said [*], the party in default removes
or remedies said cause or causes, or if such default is of the nature that it
would be unreasonable to effect a cure within such [*]

                                      -45-
<PAGE>
 
period and the defaulting party has commenced and is diligently pursuing such
cure and fully indemnifies the party not in default, subject to the provisions
of paragraph 12.1, then this Agreement shall remain in full force and effect.

    13.2 Right to Cure. In the event either PSE&G or Elizabethtown fails to
         -------------
satisfy its commitments hereunder, the non-defaulting Seller shall have the
first right but not the obligation to cure any breach by the defaulting Seller;
if the non-defaulting Seller does not elect to cure any such breach, within
[*] days of Sellers' receipt of Buyer's prior written notice of the
same, Buyer shall have the right, but not the obligation, to cure the default
and Sellers shall have no right to object to a third-party's assumption and
satisfaction of the defaulting Seller's obligations relating to such defaults.

    13.3 Termination. Except as otherwise provided herein, if the party in
         -----------
default does not remedy and remove the cause or causes stated in such notice
within said [*] Days, or does not indemnify the party not in default, then this
Agreement, at the option of the non-defaulting party, shall be terminated as to
the parties involved in such default and be of no further force or effect from
and after the expiration of said [*] Day period.

          Any terminations of this Agreement pursuant to paragraph 13.3 shall be
without prejudice to the right of the

                                      -46-
<PAGE>
 
party not in default to collect any amounts then due it and without waiver of
any other remedy to which the party not in default may be entitled for breach of
this Agreement.

                                  ARTICLE 14

                ACTIONS REQUIRED TO SATISFY CERTAIN CONDITIONS
                ----------------------------------------------

    14.1 General. Certain of the obligations of both parties set forth herein
         -------
are subject to the approval or authorization of regulatory and/or governmental
authorities. Buyer and Sellers agree to act with due diligence and cooperate
with each other in seeking such approvals or authorizations.

    14.2 BPU Approval. All of Sellers obligations set forth herein are subject
         ------------ 
to approval by the BPU upon terms and conditions acceptable to the parties in
their sole discretion. Sellers agree in seeking such approval to request the BPU
to approvel in toto, all of the terms, conditions and rates set forth in this
            ------- 
Agreement and to find, specifically, that such terms, conditions and rates are
reasonable for the term hereof, including any extensions thereof.

    14.3 Regulatory Authorizations and Governmental Permits. Certain of Sellers'
         --------------------------------------------------
obligations set forth herein, particularly those set forth in paragraph 2.2(a)
hereof, are subject to the receipt of regulatory authorizations and governmental
permits. The parties agree that the terms and conditions of such orders, permits
and authorizations must be acceptable to all parties in their sole discretion.

                                      -47-
<PAGE>
 
          Upon Sellers' receipt of any regulatory authorization or governmental
permit that has a potential adverse impact on Buyer, Sellers shall transmit to
Buyer a copy of such authorization or permit within ten (10) Days of receipt
thereof, and Buyer shall, within fifteen (15) Days of its receipt thereof, give
notice to Sellers whether the terms and conditions of such authorization are
satisfactory to Buyer, and, thereafter, immediately following Sellers'
acceptance or rejection of such authorization, Sellers shall give notice to
Buyer of its acceptance or rejection. Sellers shall also provide Buyer with
copies of all long-term firm Transportation Agreements with Transporter(s) for
quantities in excess of twenty-five thousand (25,000) Dekatherms per Day, and
copies of related certificate and abandonment applications of Transporter(s)
filed with the FERC.

    14.4 Construction of Facilities. Certain of Sellers' obligations are subject
         --------------------------
to the construction and placing in service of specific facilities. To the extent
Sellers are responsible for such construction, Sellers agree, subject to
satisfaction of any other applicable conditions, to act with due diligence in
constructing and placing in service such facilities after the receipt of the
letter(s) of credit required in paragraph 10.1.

                                      -48-
<PAGE>
 
    Within sixty (60) Days of Sellers' execution of this Agreement, Sellers
shall furnish Buyer a schedule showing their best estimate of the dates by which
(i) permits will have been received for the construction of the facilities
covered hereby, (ii) construction of such facilities will have been completed
and (iii) such facilities will have been in service. Sellers shall notify Buyer
of any material changes in the schedule provided hereunder. The parties shall
mutually cooperate and use reasonable efforts to have such facilities (or other
facilities having less volumetric capacity) in service to permit testing of the
Facility by November 1, 1991.

    To the extent that Transporter(s) are responsible for the construction of
any required facilities, following the receipt of the letters of credit
specified in paragraph 3.10, Sellers agree to act with due diligence to cause
Transporter(s) to construct and place in service such facilities. Commencing
October 1, 1990, Sellers shall provide Buyer with quarterly reports as to the
status of any regulatory authorizations required by Transporter(s) to permit
Sellers to render the services hereunder and as to the progress of any
construction of facilities by Transporter(s), equivalent to reports given to
Sellers' managements, until such facilities are in-service.

    14.5 Mutual Cooperation. Both parties agree to cooperate with each other and
         ------------------
to keep each other informed regarding their

                                      -49-
<PAGE>
 
progress in carrying out their respective obligations under this Agreement.

                                  ARTICLE 15

                            ASSIGNMENT OF INTERESTS
                            -----------------------

    15.1 Assignment of Interests. Either party may, without relieving itself of
         -----------------------
its obligations under this Agreement, assign any of its rights hereunder to an
entity with which it is affiliated, but otherwise no assignment of this
Agreement or any of the rights or obligations hereunder shall be made unless
there first shall have been obtained the consent thereto in writing of the other
party, which consent shall not be unreasonably withheld. Any successor-in-
interest of Buyer or Sellers shall be entitled to the rights and shall be
subject to the obligations of its predecessor-in-interest under this Agreement.
It is agreed, however, that the restrictions on assignment contained in this
paragraph shall not in any way prevent either party to this Agreement from
pledging, mortgaging or assigning its rights hereunder as security for its
indebtedness. In connection therewith, Sellers will execute an appropriate
consent to any such pledge, mortgage or assignment as reasonably requested by
such lender. In addition, Sellers will execute an appropriate consent in favor
of the limited partner of Buyer as reasonably requested by GEPFC. Any such
consent will acknowledge, in effect, that this

                                      -50-
<PAGE>
 
Agreement has been duly authorized and is valid and enforceable against Sellers
and that this Agreement is in full force and effect, that Sellers will not agree
to any amendment to this Agreement without the lender's or the limited partner's
approval in writing, which approval shall not be unreasonably withheld by the
lender or the limited partner, that Sellers will make all payments due to Buyer
hereunder in accordance with the instructions of the lender or the limited
partner, as the case may be, that Sellers will not terminate this Agreement by
reason of Buyer's default, by reason of force majeure or under paragraph 3.9
hereof, without giving the lender and the limited partner notice of default and
notice of termination and the same opportunity to cure provided to Buyer under
this Agreement (plus any longer period as may be necessary, not to exceed (2)
years, if the lender or the limited partner in good faith is endeavoring to
obtain possession of the Facility and pays [*] for the Resale Service quantity
during such period), that Sellers will deliver to the lender and the limited
partner a copy of each notice of default and notice of termination at the same
time that such notice is delivered to Buyer, and that in the event the lender or
the limited partner exercises its rights under its loan documentation or
partnership documentation with Buyer, Sellers will accept performance by the
lender, the limited partner or any successor or assign thereof, provided that
the lender, the limited partner or any such successor or assign pays all sums
then due to Sellers hereunder and is also otherwise in

                                      -51-
<PAGE>
 
compliance with this Agreement, as Sellers may consent to in writing, which
consent shall not be unreasonably withheld. Sellers hereby agree that their
consent shall not be required with respect to General Electric Company, General
Electric Capital Corporation, GEPFC, the limited partner of Buyer or any other
affiliated or related entity of General Electric Company.

                                  ARTICLE 16

                               ECONOMIC CHANGES
                               ----------------

    16.1 Rate Changes. At least five (5) Days prior to the beginning of each
         ------------
month, Sellers will serve on Buyer their calculation of the Commodity Cost, and
at least five (5) Days prior to each November 1, their calculation of the
Average Cost of Interstate Transportation, Weighted Average Cost of Storage and
other appropriate pricing determinations. The rates included in such filing
shall be effective the first Day of the next month, provided, however, that if
Buyer challenges such rates, the rates shall nevertheless be effective on the
first Day of the month but shall be collected subject to refund within thirty
(30) Days of a final BPU determination of the proper rates that comply with this
Agreement.

                                      -52-
<PAGE>
 
    16.2 Service Conversion. In the event Sellers' Commodity Cost of Gas in any
         ------------------
Annual Period exceeds by more than [*] of Gas during such Annual Period, and if
the average price of Sales Service Gas, excluding any [*] charges, exceeds the
price of Resale Service Gas by more than [*] percent [*] for such Annual Period,
Buyer shall have the right to notify Sellers within sixty (60) days of the end
of such Annual Period that Buyer desires to convert the Sales Service to Resale
Service. Such conversion shall be effective on the first Day of the Annual
Period next succeeding Buyer's notice to Sellers providing Sellers' [*]
continues to exceed by more than [*] percent [*] Con Ed's [*] for the Annual
Period in which Buyer's notice occurred and if the average price of the Sales
Service Gas, excluding any [*] charges, continues to exceed the price of the
Resale Service Gas by more than [*] percent [*] for such Annual Period. Such
conversion would be for the remaining term of this Agreement and all of Sellers'
Sales Service obligations would terminate commencing with such conversion.

    16.3 Taxes, Assessments or Other Charges. [*]
         -----------------------------------

                                      -53-
<PAGE>
 
[*]

    16.4 Amendment of Power Purchase Agreement. In the event Buyer and Con Ed
         -------------------------------------
amend their Power Purchase Agreement in a manner which has a material economic
impact on Sellers hereunder, particularly any amendment that would in any way
affect the amount of Gas to be used in the Facility, or otherwise agree to sell
and purchase less than the quantities of power provided in section 11.2 of the
Power Purchase Agreement, as of the date of this Agreement, Sellers shall have
the right to renegotiate this

                                      -54-
<PAGE>
 
Agreement so as to place Sellers in substantially the same economic position
that they experienced prior to the amendment of the Power Purchase Agreement.
Buyer agrees to give Sellers reasonable prior notice before amending the Power
Purchase Agreement and provide Sellers with a copy of any amendment within ten
(10) Days of its execution.

    16.5 Letters of Credit. Any letter of credit provided by Buyer hereunder as
         -----------------
security for Buyer's obligations to Sellers shall be subject to the prior review
and approval of Sellers and shall contain terms and conditions reasonably
acceptable to Sellers. Other than GEPFC or General Electric Capital Corporation,
the issuers of such security shall also be subject to Sellers' prior approval,
which approval shall not be unreasonably withheld.

                                  ARTICLE 17

                             NOTICES AND ADDRESSES
                             ---------------------

    17.1 Any notice, request, demand, statement or payment provided for in this
Agreement shall be sent to the parties hereto at the following addresses:

          BUYER:   COGEN TECHNOLOGIES LINDEN VENTURE, L.P.
                   1600 Smith Street
                   Suite 5000, 50th Floor
                   Houston, TX 77002
                   Attn: H. Fred Levine
                   Telecopier: (713) 951-7745

                                      -55-
<PAGE>
 
                   Twenty-four Hour Dispatch Contact:
                   ----------------------------------
                   During Business Hours: Lawrence D. Thomas 
                   After Business Hours: H. Fred Levine 

                   Payment, Wire Transfer:

                   COGEN TECHNOLOGIES LINDEN VENTURE, L.P.
                   (to be provided)
                   ----------------

          SELLERS: Notices:
                   --------

                   PUBLIC SERVICE ELECTRIC AND GAS COMPANY 
                   80 Park Plaza 
                   25th Floor 
                   Newark, NJ 07101 
                   Attn: Vice President Gas Supply

                   Telecopier: (201) 643-8385

                   ELIZABETHTOWN GAS COMPANY 
                   One Elizabethtown Plaza 
                   Union, NJ 07083 
                   Attn: Director of Gas Supply 

                   Telecopier: (201) 289-1370

                   Twenty-four Hour Dispatch Contact:
                   ----------------------------------
                   During Business Hours: (201) 430-5075 
                   After Business Hours: (201) 430-5075 

                   Payment, Wire Transfer:
                   -----------------------

                   PUBLIC SERVICE ELECTRIC AND GAS COMPANY
                   (to be provided)
                   ----------------

          Any notice, request or demand shall be deemed to have been made
hereunder at such time as same has been deposited and stamped in registered
United States mail, postage prepaid; provided, that notices required under
paragraph 3.13 shall be given first by telephone or radio and then confirmed
immediately by telecopier, telex or other rapid transmittal system; and provided
further that notices under paragraph 3.12

                                      -56-
<PAGE>
 
shall be given by telecopier, telex, or other similar rapid transmittal system,
and such notices shall be deemed to have been given on the Day or at the,hour
sent, as appropriate, sent by such rapid transmittal system. Either party may
change addresses under this Article 17 by giving prior written notice to the
other party.

                                  ARTICLE 18

                                 MISCELLANEOUS
                                 -------------

    18.1 This Agreement shall be governed by the laws of the State of New
Jersey.

    18.2 This Agreement constitutes the entire agreement between the parties
hereto with respect to the matters set forth herein. This Agreement may be
executed in any number of counterparts, each of which shall be deemed to be an
original of this Agreement.

    18.3 The failure of either party hereto to exercise any right granted
hereunder shall not impair nor be deemed as a waiver of such party's privilege
of exercising such right at any subsequent time or times.

    18.4 All headings appearing herein are for convenience only, and shall not
be considered a part of this Agreement for any purpose or as in any way
interpreting, construing, varying, altering or modifying this Agreement or any
of the provisions hereof.

                                      -57-
<PAGE>
 
    18.5 No modification or amendment to this Agreement shall be effective,
unless such modification or amendment is in writing.

    18.6 The terms of this Agreement and information disclosed pursuant to this
Agreement, including but not limited to the price paid for Natural Gas, shall be
kept confidential by Sellers and Buyer, (a) except to the extent any information
must be disclosed to (i) Transporter(s) for the purpose of effectuating
transportation of the Natural Gas sold and purchased under this Agreement, (ii)
Con Ed for the purpose of complying with section 4.6 of the Power Purchase
Agreement and (iii) any person or entity for the purpose of evaluating a
financial participation in the Facility or in the financing of equity
investments in Buyer, and (b) except as required by law, regulation or request
of Governmental Authority.

    18.7 Sellers shall cooperate with Buyer in connection with Buyer's efforts
to purchase gas for the Resale Service hereunder and, at Buyer's request, shall
utilize reasonable efforts to make their representatives available to meet with
potential Natural Gas suppliers identified by Buyer for that purpose.

    18.8 The performance of Sellers' obligations hereunder shall be [*] percent
[*] the responsibility of PSE&G and [*] percent [*] the responsibility of
Elizabethtown. The rights and obligations of Sellers are several, but not joint,

                                      -58-
<PAGE>
 
and neither company shall be liable for the non-performance of the other.

    18.9  If the date of any payment obligation hereunder should occur on a
Saturday, Sunday or holiday, then such obligation shall be deferred until the
next business Day thereafter.

                                  ARTICLE 19

                                  ARBITRATION
                                  -----------

    19.1 Unless provided otherwise in this Agreement, if any dispute arises
hereunder which cannot be resolved by the parties, the matter shall be referred
to an arbitration panel of three (3) persons having knowledge and experience in
connection with similar Gas supply and service agreements for resolution. The
panel shall be selected within thirty (30) Days of written notice of the dispute
and shall be comprised of one (1) member selected by Buyer, one (1) selected by
Sellers and one (1) jointly selected by the arbitrators selected by Buyer and
Sellers. Any arbitration proceeding shall be conducted in accordance with
procedures established by the American Arbitration Association. The decision of
the arbitrators shall be issued within sixty (60) Days of the commencement of
the proceeding and shall be binding on the parties, subject to any necessary
regulatory approvals.

                                      -59-
<PAGE>
 
          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed in duplicate by their respective duly authorized corporate
officers effective as of the day and year first above written.

                              SELLERS:
                              -------

WITNESS:                      PUBLIC SERVICE ELECTRIC AND GAS COMPANY

/s/ PATRICK J. KEELEY         By  /s/ JOHN A. GARTMAN
                              Title Vice President Gas Supply and Planning

WITNESS:                      ELIZABETHTOWN GAS COMPANY

/s/ PATRICK J. KEELEY         By  /s/ THOMAS E. SMITH
                              Title Assistant Vice President Supply & Planning
                              Subject to ratification by Board of Directors

                              BUYER:
                              ------

                              COGEN TECHNOLOGIES LINDEN VENTURE, L.P.
                              (D/B/A Cogen Technologies Linden
                              Venture, Limited Partnership)

                              By:  Cogen Technologies Linden, Ltd.
                                   (D/B/A Cogen Technologies Linden,
                                   Limited Partnership), a Texas
                                   limited partnership, its general partner

                                   By: Cogen Technologies, Inc.,
                                       a Texas corporation, its general partner

WITNESS:                               By:  /s/ H. FRED LEVINE
/s/ ESTALEETA WATSON                   Title:  Vice President

                                      -60-
<PAGE>
 
STATE OF NEW JERSEY, COUNTY OF ESSEX, ss.

         On this the 27th day of July, 1990, before me, Anna Burns, the
undersigned officer, personally appeared, John A. Gartman, known to me to be the
person whose name subscribed to the within instrument and acknowledged that
Public Service Electric and Gas Company executed the same for the purposes
therein contained.

         In witness whereof I hereunto set my hand and official seal.

/s/ Anna Burns
Notary
Notary Public in and for the State of New Jersey.

                                      -61-
<PAGE>
 
STATE OF NEW JERSEY, COUNTY OF ESSEX, ss.

         On this the 27th day of July, 1990, before me, Anna Burns, the
undersigned officer, personally appeared, Thomas E. Smith, known to me to be the
person whose name subscribed to the within instrument and acknowledged that
Elizabethtown Gas Company executed the same for the purposes therein contained.

         In witness whereof I hereunto set my hand and official
seal.

/s/ Anna Burns
Notary
Notary Public in and for the State of New Jersey.

                                      -62-
<PAGE>
 
STATE OF TEXAS, COUNTY OF HARRIS, ss.

         On this the 17th day of July, 1990, before me, Mary Ann McLendon, the
undersigned officer, personally appeared, H. Fred Levine, known to me to be the
person whose name subscribed to the within instrument and acknowledged that
Cogen Technologies, Inc., as General Partner of Cogen Technologies Linden, Ltd.
(D/B/A Cogen Technologies Linden, Limited Partnership), in turn acting as
General Partner of Cogen Technologies Linden Venture, L.P. (D/B/A Cogen
Technologies Linden Venture, Limited Partnership) executed the same for the
purposes therein contained.

         In witness whereof I hereunto set my hand and official seal.

/s/ MARY ANN McLENDON
____________________________________
Notary
Notary Public in and for the State of Texas.

                                      -63-
<PAGE>
 
                                   EXHIBIT A

                                      [*]
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. NO. 10 GAS                                       ORIGINAL SHEET NO. 1

                                   EXHIBIT B

                               PSE&G BASE RATES


                            TARIFF FOR GAS SERVICE





                                Applicable in 

                         territory served as shown on

                    Sheets Nos. 3 through 5 of this Tariff




                    PUBLIC SERVICE ELECTRIC AND GAS COMPANY

                                GENERAL OFFICES

                                 80 PARK PLAZA

                           NEWARK, NEW JERSEY 07101


Date of Issue: November 14, 1986                    Effective: October 31, 1986
  Issued by FREDICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY                THIRD REVISED SHEET NO. 2
                                                              SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                Second Revised Sheet No. 2 


                               TABLE OF CONTENTS

Title Page...........................................................Sheet No. 1
Table of Contents....................................................Sheet No. 2
Territory Served...................................Sheets Nos. 3 to 5, inclusive
Standard terms and Conditions.....................Sheets Nos. 6 to 18, inclusive
Raw Material Adjustment.............................................Sheet No. 19
Commodity Charge Applicable to Rate Schedule ISG....................Sheet No.19A
Commodity Charge Applicable to Rate Schedule CIG....................Sheet No.19C

Rate Schedules as listed below:

                                                             RATE        STREET
APPLICABLE TO ENTIRE TERRITORY SERVED FOR:                 SCHEDULE        NO.  

Residential Service.............................................RSG        20
General Service.................................................GSG        22
Large Volume Service............................................LVG        23
Street Lighting Service.........................................SLG        24
Interruptible Service...........................................ISG        27
Cogeneration Interruptible Service..............................CIG        36
Firm Transportation Gas Service...............................TSG-F        40
Non-Firm Transportation Gas Service..........................TSG-NF        43

Date of Issue: January 16, 1989                      Effective: January 12, 1989
  Issued by FREDERICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated January 12, 1989
                           in Docket No. ER85121163


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. NO. 10 GAS                                       ORIGINAL SHEET NO. 3

                               TERRITORY SERVED

BERGEN COUNTY

Allendale, Borough of                   Ridgefield Park, Village of
Alpine, Borough of                      Ridgewood, Village of
Bergenfield, Borough of                 River Edge, Borough of
Bogota, Borough of                      River Vale, Township of
Carlstadt, Borough of                   Rochelle Park, Township of
Cliffside Park, Borough of              Rockleigh, Borough of
Closter, Borough of                     Rutherford, Borough of
Cresskill, Borough of                   Saddle Brook, Township of
Demarest, Borough of                    Saddle River, Borough of
Dumont, Borough of                      South Hackensack, Township of
East Rutherford, Borough of             Teaneck, Township of
Edgewater, Borough of                   Tenafly, Borough of
Elmwood Park, Borough of                Teterboro, Borough of
Emerson, Borough of                     Upper Saddle River, Borough of
Englewood, City of                      Waldwick, Borough of
Englewood Cliffs, Borough of            Wallington, Borough of
Fair Lawn, Borough of                   Washington, Township of
Fairview, Borough of                    Westwood, Borough of
Fort Lee, Borough of                    Woodcliff Lake, Borough of
Franklin Lakes, Borough of              Wood-Ridge, Borough of
Garfield, Borough of                    Wyckoff, Township of
Glen Rock, Borough of
Hacksensack, City of                    BURLINGTON COUNTY
Harrington Park, Borough of
Hasbrouck Heights, Borough of           Beverly, City of
Haworth, Borough of                     Bordentown, City of
Hillsdale, Borough of                   Bordentown, Township of
Ho-Ho-Kus, Borough of                   Burlington, City of
Leonia, Borough of                      Burlington, Township of
Little Ferry, Borough of                Chesterfield, Township of        
Lodi, Borough of                        Cinnaminson, Township of
Lyndhurst, Township of                  Delanco, Township of
Mahwah, Township of                     Delran, Township of
Maywood, Borough of                     Eastampton, Township of
Midland Park, Borough of                Edgewater Park, Township of        
Montvale, Borough of                    Evesham, Township of        
Moonachie, Borough of                   Fieldsboro, Borough of
New Milford, Borough of                 Florence, Township of        
North Arlington, Borough of             Hainesport, Township of
Northvale, Borough of                   Lumberton, Township of
Norwood, Borough of                     Mansfield, Township of
Oakland, Borough of                     Maple Shade, Township of
Old Tappan, Borough of                  Medford, Township of
Oradell, Borough of                     Moorestown, Township of
Palisades Park, Borough of              Mount Holly, Township of
Paramus, Borough of                     Mount Laurel, Township of
Park Ridge, Borough of                  New Hanover, Township of
Ramsey, Borough of                      North Hanover, Township of
Ridgefield, Borough of                  Palmyra, Borough of
                                        Pemberton, Borough of
                                        Pemberton, Township of



Date of Issue: November 14, 1986                    Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                     Original Sheet No. 4


                               TERRITORY SERVED
                                  (Continued)

BURLINGTON COUNTY -- Continued           GLOUCESTER COUNTY                 
                                                                           
  Riverside, Township of                   Deptford, Township of           
  Riverton, Borough of                     National Park, Borough of       
  Southampton, Township of                 West Deptford, Township of      
  Springfield, Township of                 Westville, Borough of           
  Westampton, Township of                  Woodbury, City of               
  Willingboro, Township of                                                 
  Woodland, Township of                  HUDSON COUNTY                     
  Wrightstown, Borough of                                                  
                                           Bayonne, City of                
CAMDEN COUNTY                              East Newark, Borough of         
                                           Guttenberg, Town of             
  Audubon, Borough of                      Harrison, Town of               
  Audubon Park, Borough of                 Hoboken, City of                
  Barrington, Borough of                   Jersey City, City of            
  Bellmawr, Borough of                     Kearny, Town of                 
  Brooklawn, Borough of                    North Bergen, Township of       
  Camden, City of                          Secaucus, Town of               
  Cherry Hill, Township of                 Union City, City of             
  Collingswood, Borough of                 Weehawken, Township of          
  Gloucester, City of                      West New York, Town of          
  Haddon, Township of                                                      
  Haddonfield, Borough of                HUNTERDON COUNTY                  
  Haddon Heights, Borough of                                               
  Lawnside, Borough of                     East Amwell, Township of        
  Merchantville, Borough of                Readington, Township of         
  Mount Ephraim, Borough of                Tewksbury, Township of          
  Oaklyn, Borough of                                                       
  Pennsauken, Township of                MERCER COUNTY                     
  Tavistock, Borough of                                                    
  Wood-Lynne, Borough of                   East Windsor, Township of       
                                           Ewing, Township of              
ESSEX COUNTY                               Hamilton, Township of           
                                           Hightstown, Borough of          
  Belleville, Town of                      Lawrence, Township of           
  Bloomfield, Town of                      Princeton, Borough of           
  Caldwell, Borough of                     Princeton, Township of          
  Cedar Grove, Township of                 Trenton, City of                
  East Orange, City of                     Washington, Township of         
  Essex Falls, Borough of                  West Windsor, Township of       
  Fairfield, Borough of                                                    
  Glen Ridge, Borough of                 MIDDLESEX COUNTY                  
  Irvington, Town of                                                       
  Livingston, Township of                  Cranbury, Township of           
  Maplewood, Township of                   Dunellen, Borough of            
  Millburn, Township of                    East Brunswick, Township of      
  Montclair, Town of
  Newark, City of
  North Caldwell, Borough of
  Nutley Town of
  Orange, City of
  Roseland, Borough of 
  South Orange, Village of
  Verona, Borough of
  West Caldwell, Borough of
  West Orange, Town of
  
Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                     Original Sheet No. 5

                               TERRITORY SERVED 
                                  (Continued)

MIDDLESEX COUNTY -- Continued                   OCEAN COUNTY

  Edison, Township of                            Plumsted, Township of
  Helmetta, Borough of                           
  Highland Park, Borough of                     PASSAIC COUNTY
  Jamesburg, Borough of
  Madison, Township of                           Bloomingdale, Borough of
  Middlesex, Borough of                          Clifton, City of
  Milltown, Borough of                           Haledon, Borough of
  Monroe, Township of                            Hawthorne, Borough of
  New Brunswick, City of                         Little Falls, Township of
  North Brunswick, Township of                   North Haledon, Borough of
  Piscataway, Township of                        Passaic, City of
  Plainsboro, Township of                        Paterson, City of
  Sayreville, Borough of                         Pompton Lakes, Borough of
  South Amboy, City of                           Prospect Park, Borough of
  South Brunswick, Township of                   Ringwood, Borough of
  South Plainfield, Borough of                   Totowa, Borough of
  South River, Borough of                        Wanaque, Borough of
  Spotswood, Borough of                          Wayne, Township of
                                                 West Milford, Township of
                                                 West Paterson, Borough of
MONMOUTH COUNTY
                                                SOMERSET COUNTY
  Allentown, Borough of                            
  Millstone, Township of                         Bedminster, Township of
  Roosevelt, Borough of                          Bernards, Township of
  Upper Freehold, Township of                    Bernardsville, Borough of
                                                 Bound Brook, Borough of
                                                 Branchburg, Township of
MORRIS COUNTY                                    Bridgewater, Township of
                                                 Far Hills, Borough of
  Butler, Borough of                             Franklin, Township of
  Chatham, Borough of                            Green Brook, Township of
  Chatham, Township of                           Hillsborough, Township of
  Chester, Borough of                            Manville, Borough of
  Chester, Township of                           Millstone, Borough of
  Denville, Township of                          Montgomery, Township of
  East Hanover, Township of                      North Plainfield, Borough of
  Florham Park, Borough of                       Peapack-Gladstone, Borough of
  Hanover, Township of                           Raritan, Borough of
  Harding, Township of                           Rocky Hill, Borough of
  Jefferson, Township of                         Somerville, Borough of
  Kinnelon, Borough of                           South Bound Brook, Borough of
  Madison, Borough of                            Warren, Township of
  Mendham, Borough of                            Watchung, Borough of
  Mendham, Township of                 
  Morris, Township of                           UNION COUNTY
  Morris Plains, Borough of            
  Morristown, Town of                            Berkeley Heights, Township of
  Parsippany-Troy Hills, Township of             New Providence, Borough of
  Passaic, Township of                           Plainfield, City of
  Pequannock, Township of                        Springfield, Township of
  Randolph, Township of                          Summit, City of
  Riverdale, Borough of                

  Date of Issue: November 14, 1986                  Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
  


                                                 









<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 6
                                                             Superseding       
P.U.C.N.J. No. 10 GAS                                 First Revised Sheet No. 6 

                     STANDARD TERMS AND CONDITIONS--INDEX

                                          Sheet  
                                           No.   
 1.   General.............................   7      
                                                   
 2.   Obtaining Service...................   7      
      2.1.  Application...................   7      
      2.2.  Selection of Rate Schedule....   7      
      2.3.  Deposit and Guarantee.........   8       
      2.4.  Main Extensions...............   8       
      2.5.  Service Connections...........   8       
      2.6.  Permits.......................   8       
      2.7.  Temporary Service.............   8       
                                                    
 3.   Extension of Distribution Mains.....   8       
      3.1.  General.......................   8       
      3.2.  Individual Residential                   
              Customer....................   9       
      3.3.  Residential Land Developer....   9       
      3.4.  Commercial and Industrial.....   9       
                                                    
 4.   Characteristics of Service..........  10       
      4.1.  Standard Service Supply.......  10       
      4.2.  Heat Measurement and Billing             
              Units.......................  10       
      4.3.  Standard Pressure.............  10       
                                                    
 5.   Service Connections.................  10       
      5.1.  General.......................  10       
      5.2.  Service Connection Charges....  10       
      5.3.  Change in Location of                    
              Existing Service Pipe.......  10       
                                                    
 6.   Meters and Associated Equipment.....  11       
      6.1.  General.......................  11       
      6.2.  Seals.........................  11       
      6.3.  Protection of Meter and                    
              Service Equipment...........  11         
      6.4.  Public Service to Turn on                   
              Gas.........................  11          
      6.5.  Change in Location of Meters                
              and Associated Equipment....  11          
      6.6.  Tampering.....................  11          
                                                    
 7.   Customer's Installation.............  12       
      7.1.  General.......................  12          
      7.2.  Piping........................  12   
      7.3.  Utilization Apparatus.........  12
      7.4.  Back Pressure and Suction.....  12
      7.5.  Maintenance of Customer's           
              Installation................  12 
      7.6.  Application Adjustments.......  12  
      7.7.  Adequacy and Safety of             
              Installation................  12 
      7.8.  Liability for Customer's           
              Installation................  12 
                                               
 8.   Meter Reading and Billing...........  12  
      8.1.  Measurement of Gas Used.......  12  
      8.2.  Correction for Pressure.......  13  
      8.3.  Separate Billing for Each           
              Installation................  13  
      8.4.  Metering on Customer's              
              Premises....................  13  
      8.5.  Testing of Meters.............  14  
      8.6.  Billing Adjustments...........  14  
      8.7.  Meter Reading and Billing           
              Period......................  14  
      8.8.  Proration of Monthly Charges..  14  
      8.9.  Averaged Bills................  14  
      8.10. Budget Plan...................  14  
      8.11. Billing of Charges in Tariff..  14  
      8.12. Payment of Bills..............  14  
      8.13. Late Payment Charge...........  15  
      8.14. Returned Check Charge.........  15  
                                                
 9.   Leakage.............................  15  
                                                
10.   Access to Customer's Premises.......  15  
                                                
11.   Discontinuance of Service...........  15  
      11.1. By Public Service.............  15  
      11.2. At Customer's Request.........  16  
                                                
12.   Reconnection Charge.................  16  
                                                
13.   Service Limitations.................  17  
      13.1. Continuity of Service.........  17  
      13.2. Emergencies...................  17  
      13.3. Unusual Conditions............  17  
                                                
14.   Termination, Change, or Modification      
        of Provisions of Tariff...........  17  

 Date of Issue: October 3, 1989                   Effective: September 25, 1989 
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations 
                     80 Park Plaza, Newark, New Jersey 07101
    Filed pursuant to Order of Board of Public Utilities, dated 
                             in Docket No. GX8509901                           
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY                First Revised Sheet No. 7
                                                             Superseding
P.U.C.N.J. No. 10 GAS                                     Original Sheet No. 7


                         STANDARD TERMS AND CONDITIONS

1. GENERAL

   These Standard Terms and Conditions, filed as a part of the gas tariff of
   Public Service Electric and Gas Company, hereinafter referred to as "Public
   Service", set forth the terms and conditions under which gas service will be
   supplied and govern all classes of service to the extent applicable, and are
   made a part of all agreements for the supply of gas service unless
   specifically modified in a particular rate schedule.

   No representative of Public Service has authority to modify any provision
   contained in this Tariff or to bind Public Service by any promise or
   representation contrary thereto.

   The benefits and obligations under an application or agreement for service 
   shall begin when Public Service makes gas service available to the customer.

   Standard agreements to supply gas service shall be in accordance with the
   rate schedule and shall be based upon plant facilities which are sufficient
   for safe, proper, and adequate service. Public Service may require agreements
   for a longer term than specified in the rate schedule, may require
   contributions toward the investment, and may establish such Minimum Charges
   and Facilities Charges as may be equitable under the circumstances involved
   where: (1) large or special investment is necessary for the supply of
   service: (2) capacity required to serve customer's equipment is out of
   proportion to the use of gas service for occasional, intermittent, or low
   load factor purposes, or is for short durations.

   Publications set forth by title in sections of these Standard Terms and 
   Conditions are incorporated in this Tariff by reference.

2. OBTAINING SERVICE

 2.1. Application: An application for gas service may be made at any of the
      Customer Service Centers of Public Service in person, by mail, or by
      telephone. Forms for application for service, when required together with
      terms and conditions and rate schedules, will be furnished upon request.
      Customer shall state, at the time of making application for service, the
      conditions under which service will be required and customer may be
      required to sign and agreement or other form then in use by Public Service
      covering special circumstances for the supply of gas service. Data
      requested from customers may include proof of identification such as a
      Driver's License, as well as copies of leases, deeds and corporate
      charters. Such information shall be considered confidential.

      Public Service may reject applications for service where such service is
      not available or where such services might affect the supply of gas to
      other customers, or for failure of customer to agree to comply with any of
      these Standard Terms and Conditions.

      See also Section 13 Service Limitations, of these Standard Terms and 
      Conditions.

 2.2. Initial Selection of Rate Schedule: Public Service will assist in the
      selection of the available rate schedule which is most favorable from the
      standpoint of the customer. Any advice given by Public Service will
      necessarily be based on customer's written statements detailing his
      proposed operating conditions.

      Customer may, upon written notice to Public Service within three months
      after service is begun, elect to change and to receive service under any
      other available rate schedule. Public Service will furnish service to and
      bill the customer under the rate schedule so selected from the date of
      last scheduled meter reading, but no further change will be allowed during
      the next twelve months.

  2.2.1. Change of Rate Schedule: Subsequent to initial selection of a rate
         schedule, customer shall notify Public Service in writing of any change
         in his use of service which might affect the selection of a rate
         schedule or provision within a rate schedule. Any change in schedule or
         provision shall be applicable if permitted to the next regular billing
         subsequent to such notification.


Date of issue: February 20, 1987                    Effective: February 16, 1987
 Issued by FREDRICK R. DE. SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated February 13, 1987
                            in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY                First Revised Sheet No. 8
                                                             Superseding
P.U.C.N.J. No. 10 GAS                                     Original Sheet No. 8.


                         STANDARD TERMS AND CONDITIONS
                                  (continued)

 2.3. Deposit and Guarantee: Where Public Service deems it necessary, a deposit
      or other guarantee satisfactory to Public Service may be required as
      security for the payment of future and final bills before Public Service
      will commence or continue to render service, or perform necessary
      preliminary work prior to meter installation.

      A deposit may be required from a customer equal to the estimated bills
      which would accrue for two months service at the applicable rate
      schedule. A customer taking service for a period of less than thirty days
      may be required to deposit an amount equal to the estimated bill for such
      temporary period.

      Upon closing any account, the balance of any deposit remaining after the
      closing bill for service has been settled, shall be returned promptly to
      the depositor with interest due. Deposits shall cease to bear interest
      upon discontinuance of service.

      Public Service shall review a residential customer's account at least
      once every year and a non-residential customer's account at least once
      every 2 years. If such review indicates that the customer has established
      credit satisfactory to Public Service, then the outstanding deposit shall
      be refunded to the customer.

      Simple interest at the rate of 9% per annum shall be paid by Public
      Service on all deposits held by it, provided the deposit has remained with
      Public Service for at least 3 months.

      Interest payments shall be made at least once during each 12-month period
      in which a deposit is held and shall take the form of credits on bills
      toward utility service rendered or to be rendered, for residential
      accounts.

      A deposit is not a payment or part payment of any bill for service, except
      that on discontinuance of service Public Service may apply said deposit
      against unpaid bills for service, and only the remaining balance of the
      deposit will be refunded. Public Service shall promptly read the meters
      and ascertain that the obligations of the customer have been fully
      performed before being required to return any deposit. To have service
      resumed, customer will be required to restore deposit to original amount.

 2.4. Main Extensions: The customer may be required to make a deposit for the
      extension of gas mains as set forth in Section 3 of these Standard Terms
      and Conditions.

 2.5. Service Connections: The customer may be required to make a contribution
      toward the cost of installing a service connection as set forth in Section
      5 of these Standard Terms and Conditions.

 2.6. Permits: Public Service, where necessary, will make application for any
      street opening permits for installing its service connections and shall
      not be required to furnish service until after such permits are granted.
      The customer may be required to pay the municipal charge, if any, for
      permission to open the street. The customer shall obtain and present to
      Public Service, for recording or for registration, all instruments
      providing for easements or rights of way, and all permits (except street
      opening permits), consents, and certificates necessary for the
      introduction of service.

 2.7. Temporary Service: Where service is to be used at an installation for a
      limited period and such installation is not permanent in nature, the use
      of service shall be classified as temporary. In such cases, the customer
      may be required to pay to Public Service the cost of the facilities
      required to furnish service. The minimum period of temporary service for
      billing purposes shall be one month.

      After two years of service a temporary service installation shall be
      eligible for refunds. Excluding the first two annual service periods,
      refunds equal to 10% of the revenue received by Public Service during an
      annual service period shall be made at the end of such period. In no case
      shall the total amount refunded be in excess of the installation cost paid
      by the customer, nor shall refunds be made for more than eight consecutive
      annual service periods. 

3. EXTENSION OF DISTRIBUTION MAINS

 3.1. General: Public Service will construct, own, and maintain distribution
      mains located on streets, highways and on rights of way acquired by Public
      Service, used or usable as part of the distribution system of Public
      Service. The making of a deposit under any of the following cases shall
      not give the customer any interest in the facilities, the ownership being
      vested exclusively in Public Service.


Date of Issue: February 20, 1987                    Effective: February 16, 1987
 Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated February 13, 1987
                            in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                       Original Sheet No. 9

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

     The following formulae shall not be binding on the parties but are
     suggested as a guide to customers and utilities. Parties are still free to
     exercise their rights under New Jersey Revised Statutes 48:2-27. When an
     applicant for an extension is dissatisfied with these suggested extension
     regulations he may petition the Board for a finding that the extension
     should be made without charge.

3.2. Individual Residential Customer: Where the cost to Public Service for an
     extension to serve an individual permanent residential customer does not
     exceed five times the estimated annual revenue, Public Service will make
     the necessary extension upon receiving from the customer an application for
     service. Such application shall be made by the owner of the property or by
     a responsible tenant and shall be for an indefinite period; not less,
     however, than the number of years necessary to produce, at the normal
     annual charge, the cost of the extension.

 3.2.1.  Where the cost of an extension exceeds the amount which Public Service
         will install without cost to a customer, in accordance with Section
         3.2. the excess cost of the extension shall be deposited and remain
         with Public Service without interest. When the actual annual revenue
         from premises exceeds the amount of revenue which was used as the
         basis for the initial deposit computation, or the basis for a previous
         deposit return, there shall be returned to the depositor an additional
         amount equal to five times such excess. In no event shall more than the
         original deposit be returned to the depositor nor shall any part of the
         deposit remaining after ten years from the date of the original deposit
         be returned. Public Service will waive the deposit required where the
         amount is $100.00 or less.

 3.2.2.  Where the cost to Public Service for an extension to serve an
         individual permanent residential customer exceeds the amount which
         Public Service will install without cost to the customer, in accordance
         with Section 3.2. Public Service and the customer may agree upon a
         monthly revenue guarantee not to exceed one-sixtieth of the total cost
         of the extension, in lieu of a deposit pursuant to Section 3.2.1.

3.3. Residential Land Developer: Where applications for extensions into newly
     developed tracts of land are made by individuals, partnerships, or
     corporations interested in the development or sale of land, but not as
     ultimate residents, Public Service may require a deposit from the
     applicant covering the entire cost of the extension necessary to serve the
     tract.

 3.3.1.  Extension deposits shall not carry interest and are to be returned as
         hereinafter provided to the depositor when new buildings abutting on
         such extensions are under construction and have been framed and roofed.

 3.3.2.  The deposit shall be returned in an amount equal to five times the
         estimated annual revenue from each such completion on said extension.
         If during a ten-year period from the date of the original deposit, the
         actual annual revenue, during any year of said ten-year period, from
         premises exceeds the annual revenue which was the basis for the
         previous deposit return, there shall be returned to the depositor an
         additional amount equal to five times such excess. In no event shall
         more than the original deposit be returned to the depositor nor shall
         any part of the deposit remaining after ten years from the date of the
         original deposit be returned.

3.4. Commercial and Industrial: Public Service may require any customer to
     deposit an amount equal to the entire cost of the new facilities required
     to supply service, such amount to be subject to refund as follows: At the
     end of the first service year, an amount without interest equal to 10% of
     the total amount of the monthly bills rendered to and paid by the customer
     for gas service furnished by Public Service for that year will be refunded,
     and thereafter refunds similarly determined will continue each year until
     such time as the accumulated annual refunds are equal to but not in excess
     of the sum


Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY                
                                                       
P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 10


                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

      deposited: provided, however, that any part of the deposit not returned to
      the customer within ten years after the beginning of the first service
      year shall remain the property of Public Service. No refund will be made
      if service is discontinued prior to the expiration of the first service
      year.

      Where it is necessary to provide additional facilities to serve increased
      requirements of an existing customer, Public Service may require the
      customer to deposit an amount equal to the cost of such additional
      facilities. This amount shall be subject to refund as outlined in the
      preceding paragraph, except that the refunds will be calculated at 10% of
      the excess revenue over a predetermined base.

4. CHARACTERISTICS OF SERVICE
        
 4.1. Standard Service Supply: The gas supplied may be manufactured or derived
      from natural sources, altered to remove impurities and to add desirable
      constituents. The character of the gas will be of a nature which will
      fulfill the requirements of the Regulations of the Board of Public
      Utilities.

 4.2. Heat Measurement and Billing Units: For billing purposes, the customer's
      gas use in cubic feet will be converted to therms, using the estimated
      calendar twelve-month average heating value, on a dry basis, of the gas
      distributed, where a therm is a unit of heat energy equivalent to 100,000
      British Thermal Units (Btu's).

 4.3. Standard Pressure: The standard pressure supplied at the meter outlet will
      be within the range of 4 to 7 inches water column pressure.

5. SERVICE CONNECTIONS

 5.1. General: The customer shall consult Public Service as to the exact point
      at which the service pipe will enter the building before installing
      interior gas piping or starting any other work dependent upon the location
      of the service pipe. Public Service will determine the location of the
      service pipe depending upon existing facilities in the street and other
      practical considerations.

      Gas service will be supplied to each building or premises through a single
      service pipe except where, in the judgment of Public Service, its economic
      considerations; conditions on its distribution system; improvement of
      service conditions; or volume of the customer's requirements, make it
      desirable to install more than one service pipe.

      The making of a payment in any of the following cases shall not give the
      customer any interest in the service connection, the ownership being
      vested exclusively in Public Service.

 5.2. Service Connection Charges: Public Service will furnish and place, at no
      cost to the customer, up to 200 feet of service connection, measured at
      right angles from the nearest curb line to the customer's building, at the
      point of service entrance designated by Public Service. Where the distance
      is in excess of 200 feet, the service pipe will be installed subject to a
      charge equal to the amount by which the cost of the service connection
      exceeds the greater of either twice the customer's annual revenue as
      estimated by Public Service or the cost of the first 200 feet of service
      connection which otherwise would be furnished without charge as provided
      above. Should the customer request service entrance at a location other
      than that designated by Public Service, the customer shall pay the
      additional cost associated with said change in point of service entrance
      provided that the customer shall not be required to pay for the first 200
      feet of service connection in any case and, provided further, that the
      customer shall not be required to pay for any portion of the cost of the
      service connection if the cost thereof does not exceed twice the estimated
      annual revenue. Public Service will waive the charge to the customer when
      the amount is $50.00 or less.

      The charge for the service connection, when the service pipe is of a size
      up to and including 4-inch diameter pipe, shall be determined by the
      application of established unit costs per foot. These unit costs are
      available for customer's inspection. Where the size of the service pipe is
      greater than 4-inch, the charge shall be based on actual construction
      costs.

 5.3. Change in Location of Existing Service Pipe: Any change requested by the
      customer in the location of the existing service pipe, if approved by 
      Public Service, will be made at the expense of the customer.



Date of Issue: November 14, 1986                     Effective: October 31, 1986
 Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                            in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 11
                                                              Superseding

P.U.C.N.J. NO. 10 GAS                                 First Revised Sheet No. 11

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

6.   METERS AND ASSOCIATED EQUIPMENT

   6.1.   General: A single meter will be furnished and installed by Public 
          Service for each separately billed rate schedule under which a 
          customer receives service. Public Service shall be consulted 
          regarding meter locations. Meter installations shall be in 
          conformance with "Installation of Gas Appliances and Gas Piping," 
          issued by Public Service and available on request. Where permitted, 
          the meter shall be located outside. If the meter cannot be located 
          outside, the meter shall be set so it can be read from outside the
          building, such as through a transparent glass block or by a remote 
          meter reading device.

          When requested by a customer, remote meter reading equipment, which 
          transmits the reading on a meter to a repeating register located on 
          the outside of a building, may be installed, if feasible, at the 
          expense of the customer. The payment shall not give the customer any 
          interest in the equipment thus installed, the ownership being vested 
          exclusively in Public Service.

          Additional meters will be installed only where, in the judgment of
          Public Service, its economic considerations; conditions on its
          distribution system; improvement of service conditions; or the volume
          of the customer's requirements, make it desirable to install such
          additional meters.

   6.2.   Seals: Public Service may seal or lock any meters or enclosures 
          containing meters and associated metering equipment. No person except
          a duly authorized employee of Public Service shall break or remove a
          Public Service seal or lock.

   6.3.   Protection of Meter and Service Equipment: Customer shall furnish and 
          maintain a suitable space for the meter and associated equipment. Such
          space shall be as near as practicable to the point of entrance of the
          gas service pipe, adequately ventilated, dry and free from corrosive 
          vapors, not subject to extreme temperatures, readily accessible to 
          duly authorized employees or agents of Public Service and shall 
          otherwise conform to "Installation of Gas Appliances and Gas Piping," 
          issued by Public Service and available on request. Customer shall not 
          tamper with or remove meters or other equipment, nor permit access 
          thereto except by duly authorized employees or agents of Public 
          Service. In case of loss or damage to the property of Public Service 
          from the act of negligence of the customer or his agents or servants, 
          or of failure to return equipment supplied by Public Service, customer
          shall pay to Public Service the amount of such loss or damage to the 
          property. All equipment furnished at the expense of Public Service
          shall remain its property and may be replaced whenever deemed 
          necessary and may be removed by it at any reasonable time after the 
          discontinuance of service. In the case of defective service, the 
          customer shall not interfere or tamper with the apparatus belonging to
          Public Service but shall immediately notify Public Service to have the
          defects remedied.

   6.4.   Public Service to Turn on Gas: No person other than a duly authorized
          employee or agent of Public Service shall turn gas into any new system
          of piping or into any old system of piping from which the use of gas 
          has been discontinued.

   6.5.   Change in Location of Meters and Associated Equipment: Any change 
          requested by the customer in the existing location of meters and 
          associated equipment, if approved by Public Service, will be made at
          the expense of the customer.

   6.6.   Tampering: In the event it is established that Public Service meters 
          or other equipment on the customer's premises have been tampered with,
          and, such tampering results in incorrect measurement of the service 
          supplied as determined by Public Service, for non-residential 
          accounts, the beneficiary shall pay for such service based upon the 
          Public Service estimate from available data and not registered by
          Public Service meters. The beneficiary shall be the customer or other
          party who benefits from such tampering. In the case of residential
          accounts, all such costs shall be billed to the responsible party. The
          responsible party shall be the customer or other party who causes
          meter tampering to be committed.

          The actual cost of investigation, inspection, and determination of 
          such tampering, and other costs, such as but not limited to, the 
          installation of protective equipment, legal fees, and other costs 
          related to the administrative, civil or criminal proceedings, may be 
          billed to the responsible party.

          Tampering with Public Service facilities may be punishable by fine 
          and/or imprisonment under the New Jersey Code of Criminal Justice.


Date of Issue: September 4, 1987                      Effective: August 28, 1987
   Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated August 28, 1987
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               First Revised Sheet No.12
                                                              Superseding
P.U.C.N.J. No. 10 Gas                                 Original Sheet No. 12


                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

7.    CUSTOMER'S INSTALLATION

7.1.  General: No material change in the size, total capacity, or method of
      operation of customer's equipment shall be made without previous written
      notice to Public Service.

7.2.  Piping: Gas piping installed on the customer's premises must conform to
      all requirements of municipal or other property constituted public
      authorities and to the regulations set forth in "Installation of Gas
      Appliances and Gas Piping," issued by Public Service and available on
      request.

7.3.  Utilization Apparatus: All utilization apparatus shall have the approval
      of the American Gas Association Testing Laboratories (American Standard
      Approval Requirements) and, in addition, shall have the approval of Public
      Service. The manner of installation of all utilization apparatus shall be
      in accordance with "Installation of Gas Appliances and Gas Piping," issued
      by Public Service and available on request.

      Where the use of gas service is to be intermittent or occasional, or for
      low load factor purposes or for short durations, equipment shall not be
      connected without previous written notice to Public Service.

7.4.  Back Pressure and Suction: When the nature of the customer's utilization
      apparatus is such that it may cause back pressure or suction in the piping
      system, meters, or other associated equipment of Public Service, suitable
      protective devices, subject to inspection and approval by Public Service,
      shall be furnished, installed, and maintained by the customer.

7.5.  Maintenance of Customer's Installation: Customer's entire installation
      shall be maintained in the condition required by the municipal or other
      public authorities having jurisdiction and by Public Service.

7.6.  Appliance Adjustments: Public Service will make, free of charge,
      adjustments to gas burners and certain associated equipment necessary to
      the functioning of gas appliances in use on customer's premises. Other
      adjustments or repairs to such appliances may be made, or other services
      connected with the rendering of gas service may be performed, by Public
      Service at the customer's expense. Service procedures are detailed in
      "Servicing Equipment and Facilities on Customers' Premises," issued by
      Public Service and available on request.

7.7.  Adequacy and Safety of Installation: Public Service shall not be required
      to supply gas service until the customer's installation shall have been
      approved by the authorities having jurisdiction. Public Service may
      withhold or discontinue its service whenever such installation or part
      thereof is deemed by Public Service to be unsafe, inadequate, or
      unsuitable for receiving service, or to interfere with or impair the
      continuity or quality of service to the customer or to others.

      Public Service will assume no responsibility for the condition of
      customer's gas installation or for accidents, fires, or failures which may
      occur as the result of the condition of such gas installation.

      Neither by inspection or nonrejection, nor in any other way, does Public
      Service give any warranty, expressed or implied, as to the adequacy,
      safety, or other characteristics of any structure, equipment, wires,
      pipes, appliances, or devices used by the customer.

7.8.  Liability for Customer's Installation: Public Service will not be liable
      for damages or for injuries sustained by customers or others or by the
      equipment of customers or others by reason of the condition or character
      of customers' facilities or the equipment of others on customers'
      premises. Public Service will not be liable for the use, care or handling
      of the gas service delivered of the customer after same passes beyond the
      point at which the service facilities of Public Service connect to the
      customers' facilities.

8.    METER READING AND BILLING

8.1.  Measurement of Gas Used: Public Service will select the type and make of
      metering equipment and may, from time to time, change or alter such
      equipment; its sole obligation is to supply meters that will accurately
      and adequately furnish records for billing purposes.

Date of Issue: February 20, 1987                    Effective: February 16, 1987
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                   80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated February 13, 1987
                           in Docket No. ER85121163

<PAGE>
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             Fourth Revised Sheet No. 13
                                                             Superseding
P.U.C.N.J. No. 10 GAS                                Third Revised Sheet No. 13

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

        Where service through more than one meter is permitted by Public Service
        as outlined under Section 6.1 of these Standard Terms and Conditions,
        the cubic-foot use registered by the individual meters will be combined
        for billing purposes. In all other instances, each meter shall be billed
        separately.

        Bills will be based upon registration of Public Service meters except as
        otherwise provided for in this Tariff.

8.2.    Correction for Pressure: In any case where, pursuant to Section 4.3,
        Public Service measures the gas delivered to a customer under pressure
        greater than that exerted by a column of water seven inches in height,
        the cubic feet of gas registered by the meter or meters of Public
        Service shall be subject to correction for billing purposes by the
        application of a proper correction factor.

8.3.    Separate Billing for Each Installation: The gas service used by a
        customer through each service connection shall be billed separately at
        the applicable rate schedule selected by the customer. See Sections 5.1
        and 6.1 of these Standard Terms and Conditions.

8.4.    Metering on Customer's Premises:

  8.4.1.  General: The service and supply of gas by Public Service for the use
          of owners, landlords, tenants, or occupants of residential buildings
          or premises will be furnished to them as customers of Public Service
          through Public Service individual meters.

          The service and supply of gas by Public Service to owners, landlords,
          tenants, or occupants of industrial or commercial buildings or
          premises may be further distributed to other users within such
          structures and such use and resultant charges, including appropriate
          administrative costs, apportioned to such users. However, such charges
          shall not exceed the amount that Public Service would charge if the
          tenant was served and billed directly by Public Service.

  8.4.2.  Submetering: The practice in which the customer of record buys gas
          from Public Service and resells it through some metering device at a
          profit is not permitted.

  8.4.3.  Check Metering: Where a customer monitors or evaluates his own
          consumption of gas or any portion thereof in an effort to promote and
          stimulate conservation or for accountability by means of individual
          meters, computers or otherwise, installed, operated, and maintained at
          such customer's expense, such practice will be defined as check 
          metering.

          Gas check meters are devices that measure the volume of gas being
          delivered to particular locations in a system after measurement by a
          Public Service owned meter. Gas check meters provide the customer-of-
          record the means to apportion among the end users the cost of gas
          service being supplied through the Public Service owned meter.

          If the customer-of-record charges the tenant for the usage incurred by
          the tenant, reasonable administrative expenses may be included, such
          charges shall not exceed the amount Public Service would have charged
          such tenant if the tenant had been served and billed by Public Service
          directly.

          Check metering will be permitted in new or existing buildings or
          premises where the basic characteristic of use is industrial or
          commercial. Check metering will not be permitted in new or existing
          buildings or premises where the basic characteristic of use is
          residential, except where such buildings or premises are publicly
          financed or government owned; or are condominiums or cooperative
          housing; or are eleemosynary in nature. In the case of dwelling units,
          all gas consuming devices must be metered through a single check
          meter.

          Check metering for the aforementioned purposes and applications shall
          not adversely affect the ability of Public Service to render service
          to any customer within the affected building or premises or any other
          customer. The customer shall contact Public Service prior to the
          installation of any check metering device to ascertain that it will
          not cause operating problems. The ownership of all check metering
          devices is that of the customer, along with all incidents in
          connection with said ownership, including accuracy of the equipment,
          meter reading and billing, liability arising from the presence of the
          equipment and the maintenance and repair of the equipment. Any
          additional costs which may result from and are attributable to the
          installation of check metering devices shall be borne by the customer.

Date of Issue: October 3, 1989                     Effective: September 25, 1989
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 14
                                                               Superseding
P.U.C.N.J. No. 10 GAS                                 First Revised Sheet No. 14

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

      The customer shall be responsible for the accuracy of check metering
      equipment. In the event of a dispute involving such accuracy, the Public
      Service meter will be presumed correct, subject to test results.

8.5.  Testing of Meters: At such times as Public Service may deem proper, or as
      the Board of Public Utilities may require, Public Service will test its
      meters in accordance with the standards and bases prescribed by the Board
      of Public Utilities.

      Public Service shall, without charge, make a test of the accuracy of a
      meter(s) upon request of the customer, provided such customer does not
      make a request for test more frequently than once in 12 months.

      A report giving results of such tests shall be made to the customer, and a
      complete record of such tests shall be kept on file at the office of
      Public Service in conformance with the New Jersey Administrative Code.

8.6.  Billing Adjustments: Whenever a meter is found to be registering fast by
      2% or more, an adjustment of charges shall be made. When a meter is found
      to be registering slow by more than 2%, an adjustment of charges may be
      made, except for residential accounts, where no adjustment will be made.

8.7.  Meter Reading and Billing Period: All charges are stated on a monthly
      basis. The term "month" for billing purposes shall mean the period
      between any two consecutive regularly scheduled meter readings. Meter
      reading schedules provide for reading meters, in accordance with their
      geographic location, as nearly as may be practicable every thirty days.
      Schedules are prepared in advance by Public Service and are available for
      inspection.

      Bi-monthly billing in place on February 6, 1987 will be completely phased
      out by September 1987, at which time all residential rates will be billed
      on a monthly basis.

8.8.  Proration of Monthly Charges: For all billings for service, including
      initial bills, final bills, and bills for periods other than twenty-five
      to thirty-six days inclusive, except for temporary service accounts and
      Rate Schedules ISG, CIG, TSG-F and TSG-NF, the monthly charges will be
      prorated on the basis of one-thirtieth for each day of service, each month
      being considered as thirty days when determining the number of days on
      which prorating is based. For temporary service accounts the minimum
      period for billing purposes shall be one month.

8.9.  Averaged Bills: Where Public Service is unable to read the meter, Public
      Service may estimate the amount of gas supplied and submit an averaged
      bill, so marked, for customer's acceptance. Adjustment of such customer's
      averaged use to actual use will be made after an actual meter reading is
      obtained.

8.10. Budget Plan: Customers billed under Rate Schedules RSG and GSG where gas
      service is used for residential purposes in buildings of four or fewer
      units, shall have the option of paying for their use of total service in
      equal, estimated monthly installments. The total service for a twelve
      month period will be averaged over twelve months and may be paid in twelve
      equal monthly installments. Adjustments will be made in the twelfth month
      if actual charges are more or less than the budget amounts billed.

8.11. Billing of Charges in Tariff: Unless otherwise ordered by the Board of
      Public Utilities, the charges and the classification of service set forth
      in this Tariff or in amendments hereof shall apply to the first month's
      billing of service in the regular course on and after the effective date
      set forth in such Tariff covering the use of gas service subsequent to the
      scheduled meter reading date for the immediately preceding month.

8.12. Payment of Bills: At least 10 days time for payment shall be allowed after
      sending a bill. Bills are payable at any Customer Service Center of Public
      Service, or by mail, or to any collector or collection agency duly
      authorized by Public Service. Whenever a residential customer advises
      Public Service prior to the date of a proposed discontinuance for non-
      payment that he wishes to discuss a deferred payment agreement because he
      is presently unable to pay a total outstanding bill, Public Service will
      make a good-faith effort to allow a residential customer the opportunity
      to enter into a


Date of Issue: October 3, 1989                      Effective September 25, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 15
                                                              Superseding
P.U.C.N.J. No. 10 GAS                                 First Revised Sheet No. 15

                         STANDARD TERMS AND CONDITIONS

                                  (Continued)

       reasonable deferred payment agreement, either prior to or after the
       occurrence of discontinuance of service for non-payment. A residential
       electric or gas customer is not required to pay, as a down payment, more
       than 25% of the total outstanding bill due at the time of the agreement.
       Such agreements which extend more than 2 months must be in writing and
       shall provide that a customer who is presently unable to pay an
       outstanding debt for Public Service services may make reasonable periodic
       payments until the debt is liquidated, while continuing payment of
       current bills. While a deferred payment agreement for each separate
       service need not be entered into more than once a year, Public Service
       may offer more than one such agreement in a year. If the customer
       defaults on any of the terms of the agreement, Public Service may
       discontinue service after providing the customer with a notice of
       discontinuance.

       In the case of a residential customer who receives more than one utility
       service from Public Service and has entered into a separate agreement 
       for each separate service, default on one such agreement shall constitute
       grounds for discontinuance of only that service.

 8.13. Late Payment Charge: A late payment charge at the rate of 1.416% per
       monthly billing period shall be applied to the accounts of customers
       taking service under all rate schedules contained herein except for Rate
       Schedules RSG and SLG. Service to a body politic will not be subject to a
       later payment charge. The charge will be applied to all amounts billed
       including accounts payable and unpaid finance charge amounts applied to
       previous bills, which are not received by Public Service within 45 days
       following the date specified on the bill. The amount of the finance
       charge to be added to the unpaid balance shall be calculated by
       multiplying the unpaid balance by the late payment charge rate. When
       payment is received by the Company from a customer who has an unpaid
       balance which includes charges for late payment, the payment shall be
       applied first to such charges and then to the remainder of the unpaid
       balance.

 8.14. Returned Check Charge: A $10.00 charge shall be applied to the accounts
       of customers who have checks to Public Service returned unhonored by the
       bank.

 9. LEAKAGE

    Customer shall immediately give notice to Public Service at its office of
    any escape of gas in or about the customer's premises.

10. ACCESS TO CUSTOMER'S PREMISES

    Public Service shall have the right of reasonable access to customer's
    premises, and to all property furnished by Public Service, at all reasonable
    times for the purpose of inspection of customer's premises incident to the
    rendering of service, reading meters or inspecting, testing, or repairing
    its facilities used in connection with supplying the service, or for the
    removal of its property. The customer shall obtain, or cause to be obtained,
    all permits needed by Public Service for access to its facilities. Access to
    facilities of Public Service shall not be given except to authorized
    employees of Public Service or duly authorized governmental officials.

11. DISCONTINUANCE OF SERVICE

 11.1. By Public Service: Public Service, upon reasonable notice, when it can be
       reasonably given, may suspend or curtail or discontinue service for the
       following reasons: (1) for the purpose of making permanent or temporary
       repairs, changes or improvements in any part of its system; (2) for
       compliance in good faith with any governmental order or directive
       notwithstanding such order or directive subsequently may be held to be
       invalid; (3) for any of the following acts or omissions on the part of
       the customer: (a) non-payment of a valid bill due for service furnished
       at a present or previous location. However, non-payment for business
       service shall not be a reason for discontinuance of residence service
       except in cases of diversion of service pursuant to N.J.A.C. 14:3-7.16;
       (b) tampering with any facility of Public Service; (c) fraudulent
       representation in relation to the use of service; (d) customer moving
       from the premises, unless the customer requests that service be
       continued; (e) providing service to others without approval of Public
       Service except as permitted under Section 8.4 Metering on Customer's
       Premises; (f) failure to make or increase an advance

Date of Issue:  October 3, 1989                    Effective: September 25, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 16
                                                            Superseding
P.U.C.N.J. No.10 GAS                                  First Revised Sheet No. 16

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

      payment or deposit as provided for in these Standard Terms and
      Conditions;(g) refusal to contract for service where such contract is
      required;(h) connecting and operating equipment in such manner as to
      produce disturbing effects on the service of Public Service or other
      customers; (i) failure of the customer to comply with any of these
      Standard Terms and Conditions; (j) where the condition of the customer's
      installation presents a hazard to life or property; or (k) failure of
      customer to repair any faulty facility of the customer; (4) for refusal of
      reasonable access to customer's premises for necessary purposes in
      connection with rendering of service, including meter installation,
      reading or testing, or the maintenance or removal of the property of
      Public Service. 

      Public Service may not discontinue service for non-payment of bills unless
      it gives the customer at least 7 days written notice of its intentions to
      discontinue. The notice of discontinuance shall not be served until the
      expiration of the 10-day period. However, in case of fraud, illegal use,
      or when it is clearly indicated that the customer is preparing to leave,
      immediate payment of accounts may be required. 

      Public Service may not discontinue service because of non-payment of bills
      in cases where a charge is in dispute, provided that the undisputed
      charges are paid and a request is made to the Board for investigation of
      the disputed charge. In such cases, Public Service shall notify the
      customer that unless steps are taken to invoke formal or informal Board
      action within 5 days, service will be discontinued non-payment.

      Public Service may not discontinue residential service on Saturday,
      Sunday, or a holiday on which Public Service Customer Service Centers are
      closed or after 1:00 P.M. of the business day prior to a week-end or such
      holiday for non-payment.

      Discontinuance of residential service for non-payment is prohibited if a
      medical emergency exists within the premises which would be aggravated by
      discontinuance of service and the customer gives reasonable proof of
      inability to pay. Discontinuance shall be prohibited for a period of up to
      2 months when a customer submits a physician's statement in writing to
      Public Service as to the existence of the emergency, its nature and
      probable duration, and that termination of service will aggravate the
      medical emergency. Recertification by the physician as to continuance of
      the medical emergency shall be submitted to Public Service after 30 days.
      However, at the end of such period of emergency, the customer shall still
      remain liable for payment of service(s) rendered, subject to the
      provisions of N.J.A.C. 14:3-7.13.

         1. The Board may extend the 60-day period for good cause. 
         2. Public Service may in its discretion, delay discontinuance of
            residential service for non-payment prior to submission of the
            physician's statement required by this subsection when a medical
            emergency is known to exist.
      Public Service shall make every reasonable effort to determine when a
      landlord-tenant relationship exists at residential premises being served.
      If such a relationship is known to exist, service will not be shut off
      unless Public Service has posted a notice of discontinuance in common
      areas of multiple-family premises and has given individual notice to
      occupants of single-family and two-family premises and has offered the
      tenants continued service to be billed to the tenants, unless Public
      Service demonstrates that such billing is not feasible. The continuation
      of service to a tenant shall not be conditioned upon payment by the tenant
      of any outstanding bills due upon the account or any other person. Public
      Service shall not be held to the requirements of this Tariff section if
      the existence of a landlord-tenant relationship could not be reasonably
      ascertained.

11.2. At Customer's Request: A customer wishing to discontinue service must give
      notice as provided in the applicable rate schedule. Where such notice is
      not received by Public Service, customer shall be liable for service until
      final reading of the meter is taken. Notice to discontinue service will
      not relieve a customer from any minimum or guaranteed payment under any
      contract or rate schedule.

12. RECONNECTION CHARGE

    A reconnection charge of $15.00 will be made for restoration of service when
    service has been suspended or discontinued for nonpayment of any bill due.


Date of Issue: October 3, 1989                  Effective: September 25, 1989
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                      80 Park Plaza, Newark, New Jersey 07101
           Filed pursuant to Order of Board of Public Utilities, dated
                          in Docket No. GX8509901 




<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               First Revised Sheet No. 17
                                                             Superseding
P.U.C.N.J. No. 10 GAS                                    Original Sheet No. 17

                        STANDARD TERMS AND CONDITIONS  

                                  (Continued)

13. SERVICE LIMITATIONS
13.1. Continuity of Service: Public Service will use reasonable diligence to
      provide a regular and uninterrupted supply of service; but, should the
      supply be suspended, curtailed, or discontinued by Public Service for any
      of the reasons set forth in Section 11 of these Standard Terms and
      Conditions, or should the supply of service by interrupted, curtailed,
      deficient, defective, or fail, by reason of any act of God, accident,
      strike, legal process, governmental interference, or by reason of
      compliance in good faith with any governmental order of directive,
      notwithstanding such order or directive subsequently may be held to be
      invalid, Public Service shall not be liable for any loss or damage, direct
      or consequential, resulting from any such suspension, discontinuance,
      interruption, curtailment, deficiency, defect, or failure.

13.2. Emergencies: Public Service may curtail or interrupt service to any
      customer or customers in the event of an emergency threatening the
      integrity of its system or the systems to which it is directly or
      indirectly connected if, in its sole judgment, such action will prevent or
      alleviate the emergency condition.

13.3. Unusual Conditions: Public Service may place limitations on the amount and
      character of gas service it will supply or transport and may refuse such
      service to new customers, to existing customers for additional load, or to
      customers whose service agreements have expired if Public Service is or
      will be unable to obtain or does not have assured the necessary production
      raw materials, equipment and facilities to supply such gas or
      transportation service. In the case of transportation service, if Public
      Service, at its sole discretion, determines that such service would not be
      consistent with the best interest of its customers served under all rate
      schedules contained herein such service may be denied to applicants for
      such service.

14. TERMINATION, CHANGE, OR MODIFICATION OF PROVISIONS OF TARIFF

     This Tariff is subject to the lawful orders of the Board of Public
     Utilities of the State of New Jersey.

     Public Service may at any time and in any manner permitted by law, and the
     applicable rules and regulations of the Board of Public Utilities of the
     State of New Jersey, terminate, or change or modify by revision, amendment,
     supplement, or otherwise, this Tariff or any part hereof, or any revision
     or amendment hereof or supplement hereto.



Date of Issue: October 3, 1989                     Effective: September 25, 1989
  Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
               80 Park Plaza, Newark, New Jersey 07101
         Filed pursuant to Order of Board of Public Utilities, dated
                        in Docket No. GX8509901


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               First Revised Sheet No. 18
                                                              Superseding
P.U.C.N.J. No. 10 GAS                                    Original Sheet No. 18


                            RESERVED FOR FUTURE USE


Date of Issue: October 3, 1989                     Effective: September 25, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Fourth Revised Sheet No. 19
                                                              Superseding
P.U.C.N.J. No. 10 GAS                                 Third Revised Sheet No. 19

                           RAW MATERIALS ADJUSTMENT

Average cost per million Btu of gas sent out during the
     ten months ended September 30, 1990.......................  303.074(cents)

Base cost per million Btu......................................  330.000(cents)

Increase above or (decrease) below base cost...................  (26.926)(cents)

Number of 0.1 (cents) increases above or (below) base cost.....  (269.26)


                                                                 RATE SCHEDULES
                                                               RSG, GSG, AND LVG

Adjustment factor per therm for each 0.1 (cents)
     increase above or decrease below base cost................   0.01207(cents)

Amount per therm of Raw Materials Adjustment charge............  (3.2500)(cents)


Date of Issue: December 27, 1989                     Effective: December 6, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY        Forty-Fifth Revised Sheet No. 19A
                                                          Superseding
P.U.C.N.J. No. 10 GAS                        Forty-Fourth Revised Sheet No. 19A

                               COMMODITY CHARGE

                   APPLICABLE TO INTERRUPTIBLE SCHEDULE ISG

COMMODITY CHARGE:

     Per therm of gas used for customers with alternate 
     fuel oil capability of:
     No. 2 oil...............................................    38.6400(cents)
                                                               ========= 
     No. 4 oil...............................................    32.6200(cents)
                                                               ========= 
     No. 6 oil...............................................    28.0100(cents)
                                                               ========= 
     Higher than 1.5% Sulfur No. 6 oil.......................    26.4581(cents)
                                                               ========= 
     (Based upon the Marketability Price of Alternate Fuel; 
     price not to fall below the floor price.)

ISG FLOOR PRICE:

     Estimated Average Commodity cost per therm of gas 
     received in the month of July 1990......................    21.3200(cents)

     ADJUSTED FOR:
        .Losses at 1.5 percent...............................    21.6447(cents)
        .A contribution of 1 cent............................    22.6447(cents)
        .GRI Surcharge at .126 cents.........................    22.7707(cents)
        .Gross Receipts taxes at 13.7700 percent and BPU
         assessment at .1667 percent.........................    26.4581(cents)
                                                               ========= 

MARKETABILITY PRICE OF ALTERNATE FUEL:

     No. 2 oil...............................................    38.6400(cents)
                                                               ========= 
     No. 4 oil...............................................    32.6200(cents)
                                                               ========= 
     0.3% Sulfur No. 6 oil...................................    28.0100(cents)
                                                               ========= 
     Higher than 1.5% Sulfur No. 6 oil.......................    23.1500(cents)
                                                               ========= 

TSG FLOOR PRICE:

     For those TSG customers provided sales service, the 
     Commodity Charge, by alternate fuel type, will be the
     higher of the applicable ISG price or the TSG Floor
     Price.

     Estimated Incremental Commodity cost per therm of gas
     received in the month of July 1990......................    20.2570(cents)


     ADJUSTED FOR:
        .Losses at 1.5 percent...............................    20.5655(cents)
        .A contribution of 3 to 7 cents......................    24.5655(cents)
        .GRI Surcharge at .126 cents.........................    24.6915(cents)
        .Gross Receipts taxes at 13.7700 percent and BPU 
         assessment at .1667 percent.........................    28.6899(cents)
                                                               ========= 

Date of Issue: June 25, 1990                             Effective: July 1, 1990
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated December 6, 1989
                           in Docket No. GR89060622

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY        Forty-Fifth Revised Sheet No. 19C
                                                          Superseding
P.U.C.N.J. No. 10 GAS                         Forty-Fourth Revised Sheet No. 19C


                               COMMODITY CHARGE

             APPLICABLE TO COGENERATION INTERRUPTIBLE SCHEDULE CIG

                                                                    Special
                                                                   Provision
                                                 All Other            (r)
                                                 --------------  --------------
COMMODITY CHARGE:                                                
                                                                 
    Per therm of gas used......................  24.7707(cents)  22.7707(cents)
                                                                
    Estimated Average Commodity cost per therm                  
    of gas received in the month of July 1990..  21.3200(cents)  21.3200(cents)
                                                                
    ADJUSTED FOR:                                               
                                                                
       . Losses at 1.5 percent.................  21.6447(cents)     --
       . A contribution of 3 cents.............  24.6447(cents)     --
       . GRI Surcharge at .126 cents...........  24.7707(cents)     --
                                                                
    ADJUSTED FOR:                                               
                                                                
       . Losses at 1.5 percent.................     --           21.6447(cents)
       . A contribution of 1 cent..............     --           22.6447(cents)
       . GRI Surcharge at .126 cents...........     --           22.7707(cents)


Date of Issue: June 25, 1990                             Effective: July 1, 1990
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                      80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated December 6, 1989
                            in Docket No. GR89060622


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY          Fortieth Revised Sheet No. 19C
                                                           Superseding
P.U.C.N.J. No. 10 GAS                         Thirty-Ninth Revised Sheet No. 19C

                               COMMODITY CHARGE

             APPLICABLE TO COGENERATION INTERRUPTIBLE SCHEDULE CIG

                             
                                                                    Special
                                                                   Provision
                                                All Other             (r)
                                                ---------          ---------
COMMODITY CHARGE:

     Per therm of gas used.................   31.3697 (cents)   29.3697 (cents)
 
     Estimated Average Commodity cost per
      therm of gas received in the month
      of February 1990.....................   27.8200 (cents)   27.8200 (cents)

     ADJUSTED FOR:

       .Losses at 1.5 percent..............   28.2437 (cents)         --
       .A contribution of 3 cents..........   31.2437 (cents)         --
       .GRI Surcharge at .126 cents........   31.3697 (cents)         --

     ADJUSTED FOR:

       .Losses at 1.5 percent..............         --          28.2437 (cents)
       .A contribution of 1 cent...........         --          29.2437 (cents)
       .GRI Surcharge at .126 cents........         --          29.3697 (cents) 


Date of Issue: January 31, 1990                      Effective: January 31, 1990
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated December 6, 1989
         in Docket No. GR89060622, as amended in Docket No. GT90010047
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 21

                               RATE SCHEDULE RSG

                              RESIDENTIAL SERVICE
                                  (Continued)

SPECIAL PROVISIONS:

(a)   This rate schedule is available when all continuous service is measured by
      one meter:

           (a-1)  In individual residences and appurtenant outbuildings;

           (a-2)  In residential premises where customer's use of gas service 
           for purposes other than residential is incidental to his residential 
           use;

           (a-3)  For rooming or boarding houses where the number of rented 
           rooms does not exceed twice the number of bedrooms occupied by the 
           customer;

           (a-4)  In individual flats or apartments in multiple-family 
           buildings;

           (a-5)  In multiple-family buildings of two or more individual flats 
           or apartments where gas service is furnished to the tenants or 
           occupants of the flats or apartments by the owner without a 
           specific charge for such service; and, where Special Provision (b) is
           applicable, the basic factors stated therein shall be multiplied by 
           the number of individual flats or apartments, whether occupied or 
           not.

(b)   Off-Peak Use: Where gas service is used for central air-conditioning 
      equipment having a rated capacity of not less than two tons of 
      refrigeration the Commodity Charge for the therms used for all purposes in
      excess of 50 therms in any month during the Off-Peak period shall be 
      40.568(cents) per therm.

      The Off-Peak period shall commence and end with the regularly scheduled
      meter readings in the months of April and October, respectively, but
      Public Service may change such period depending upon load conditions on
      its system.

STANDARD TERMS AND CONDITIONS:

      This rate schedule is subject to the Standard Terms and Conditions on 
      Sheets Nos. 6 to 18, inclusive of this Tariff.


Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 22
                                                            Superseding
P.U.C.N.J. No. 10 GAS                                 First Revised Sheet No. 22

                               RATE SCHEDULE GSG

                                GENERAL SERVICE

APPLICABLE TO USE OF SERVICE FOR:

      General purposes.

CHARACTER OF SERVICE:

      Continuous.

RATE:

      Service Charge:
      $6.00 in each month.

      Commodity Charge:
      61.643(cents) per therm.

      Raw Materials Adjustment:

      A charge or credit will be made when the estimated October through
      September twelve-month net average cost to Public Service of production
      raw materials used is 0.1(cents) per million Btu of gas sent out above or
      below 330.0(cents) per million Btu of gas sent out. Immediately prior to
      October of each year, the estimated average cost will be determined for
      the succeeding twelve-month period. This estimated average cost will be
      adjusted for any under- or over-recovery which may have occurred during
      the operation of the Company's previously approved clause. The net charge
      or net credit will be the adjusted differential cost above or below 
      330.0(cents) per million Btu of gas sent out multiplied by 0.01207(cents)
      per therm per 0.1(cents) variation to reflect applicable losses, and taxes
      related to revenue from the sales of gas. Any net charge or net credit
      will apply to all therms billed each month of the succeeding twelve-month
      period. In the event that a major change in the average cost occurs during
      the twelve-month period, a revised estimated average cost will be
      calculated and applied for the remainder of the period in accordance with
      the above.

      Other Charges:

      See Special Provisions (a) Off-Peak Use and (c) Cogeneration Use.

MINIMUM CHARGE:

      The monthly minimum charge shall be $6.00.

DETERMINATION OF THERMS:

      The number of therms used shall be determined by multiplying the number of
      hundred cubic feet used by the "therms multiplier" expressed in therms per
      hundred cubic feet which appears on every bill.

TERMS OF PAYMENT:

      Bills are due on presentation subject to a late payment charge at the rate
      of 1.416% per monthly billing period in accordance with Section 8.13 of 
      the Standard Terms and Conditions. Service to a body politic will not be 
      subject to a late payment charge.

TERM:
      One year and thereafter until terminated by five days' notice.



Date of Issue: June 23, 1988                            Effective: June 17, 1988
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
   Filed pursuant to Order of Board of Public Utilities, dated June 17, 1988
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY
                                                          Original Sheet No. 22A
P.U.C.N.J. No. 10 GAS


                               RATE SCHEDULE GSG

                                GENERAL SERVICE
                                  (Continued)

SPECIAL PROVISIONS:

(a)   Off-Peak Use: Where gas service in commercial and industrial 
      establishments is used for cooling or for dehumidification and supplied
      through a separate meter, the Commodity Charge for the therms used in
      the Off-Peak period shall be 40.568c per therm.

      The Off-Peak period shall commence and end with the regularly scheduled 
      meter readings in the months of April and October, respectively, but 
      Public Service may change such period depending upon load conditions on 
      its system.

(b)   Resale: Service under this rate schedule is not available for resale.

(c)   Cogeneration Use: Applicable to separately metered service for the 
      sequential production of electrical energy and useful thermal energy from 
      the same fuel source by a Qualifying Facility, as defined in Section 201
      of the Public Utilities Regulatory Policies Act of 1978 whose cogeneration
      equipment meets the efficiency standards set forth in Chapter 18 of the
      Code of Federal Regulations, Sections 292.205 (a) and (b). Customer must
      document that qualifying status has been granted by the Federal Energy
      Regulatory Commission.

      Service to a qualifying cogeneration facility as set forth above is exempt
      from Gross Receipts and Franchise taxes.

STANDARD TERMS AND CONDITIONS:

      This rate schedule is subject to the Standard Terms and Conditions on 
      Sheets Nos. 6 to 18, inclusive of this Tariff.



Date of Issue: November 14, 1986                     Effective: October 31, 1986
   Issued by FREDRICK R. DE SANTI, Senior Vice President--Current Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
   
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 23
                                                              Superseding
P.U.C.N.J. No. 10 Gas                                 First Revised Sheet No. 23

                               RATE SCHEDULE LVG

                             LARGE VOLUME SERVICE

APPLICABLE TO USE OF SERVICE FOR:
  
     General purposes.

CHARACTER OF SERVICE:

     Continuous.

RATE:

     Service Charge:
     $50.00 in each month.

     Commodity Charge for the first 1,000 therms:
     57.243(cents) per therm for 
     the first................................  1,000 therms used in each month
     
     Commodity Charge in excess of 1,000 therms in the months of May through 
     October:
     50.568(cents) per therm for the next......  4,000 therms used in each month
     45.568(cents) per therm in excess of......  5,000 therms used in each month

     Commodity Charge in excess of 1,000 therms in the months of November 
     through April:
     54.276(cents) per therm in excess of......  1,000 therms used in each month

     Raw Materials Adjustment:

     A charge or credit will be made when the estimated October through
     September twelve-month net average cost to Public Service of production raw
     materials used is 0.1(cents) per million Btu of gas sent out above or
     below 330.0(cents) per million Btu of gas sent out. Immediately prior to
     October of each year, the estimated average cost will be determined for the
     succeeding twelve-month period. This estimated average cost will be
     adjusted for any under- or over-recovery which may have occurred during the
     operation of the Company's previously approved clause. The net charge or
     net credit will be the adjusted differential cost above or below 330.0
     (cents) per million Btu of gas sent out multiplied by 0.01207(cents) per
     therm per 0.1(cents) variation to reflect applicable losses, and taxes
     related to revenue from the sales of gas. Any net charge or net credit will
     apply to all therms billed each month of the succeeding twelve-month 
     period. In the event that a major change in the average cost occurs during
     the twelve-month period, a revised estimated average cost will be
     calculated and applied for the remainder of the period in accordance with
     the above.

     Other Charges:

     See Special Provisions (a) Off-Peak Use and (c) Cogeneration Use.

MINIMUM CHARGE:

     The monthly minimum charge shall be $50.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of
     hundred cubic feet used by the "therms multiplier" expressed in therms per
     hundred cubic feet which appears on every bill.


Date of Issue: June 23, 1988                            Effective: June 17, 1988
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
   Filed pursuant to Order of Board of Public Utilities, dated June 17, 1988
                           in Docket No. ER85121163


<PAGE>
 

PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                    Original Sheet No. 23A


                               RATE SCHEDULE LVG

                             LARGE VOLUME SERVICE
                                  (Continued)

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of the
     Standard Terms and Conditions. Service to a body politic will not be
     subject to a late payment charge.

TERM:

     One year and thereafter until terminated by five days' notice.

SPECIAL PROVISIONS:

(a)  Off-Peak Use: Where separately metered gas service (1) is used for building
     cooling or dehumidification or (2) is to boilers, used in whole or in part
     to supply the requirements of absorption air-conditioning equipment of 100
     tons or more nominal capacity, the rate during the off-peak period shall be
     40,568(cents) per therm. However, such off-peak rate shall not be
     applicable until the first 500 therms have been billed at the first block
     of the Commodity Charge.

     The Off-Peak period shall commence and end with the regularly scheduled
     meter readings in the months of April and October, respectively, but Public
     Service may change such period depending upon load conditions on its
     system.

(b)  Resale: Service under this rate schedule is not available for resale.

(c)  Cogeneration Use: Applicable to separately metered service for the
     sequential production of electrical energy and useful thermal energy from
     the same fuel source by a Qualifying Facility, as defined in Section 201 of
     the Public Utilities Regulatory Policies Act of 1978 whose cogeneration
     equipment meets the efficiency standards set forth in Chapter 18 of the
     Code of Federal Regulations, Sections 292.205 (a) and (b). Customer must
     document that qualifying status has been granted by the Federal Energy
     Regulatory Commission.

     Service to a qualifying cogeneration facility as set forth above is exempt 
     from Gross Receipts and Franchise taxes.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on
     Sheets Nos. 6 to 18, inclusive of this Tariff.



Date of Issue: November 14, 1986                   Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              Second Revised Sheet No. 24
                                                              Superseding
P.U.C.N.J. No. 10 GAS                                 First Revised Sheet No. 24

                               RATE SCHEDULE SLG

                            STREET LIGHTING SERVICE

This rate schedule is in the process of elimination and is limited to street 
lighting installations served hereunder in the month of April 1980, and only for
the specific premises and class of service served hereunder on such date.

APPLICABLE TO USE OF SERVICE FOR:

     Street lighting to a body politic.

CHARACTER OF SERVICE:

     Limited period from dusk to dawn.

RATE:

     Monthly Charge Per Unit:
     Single-mantle lamps.........$11.38
     Double-mantle lamps......... 12.83
     Triple-mantle lamps......... 18.31 on posts installed prior to 
                                   October 30, 1963
     Triple-mantle lamps......... 21.20 on posts installed on and after 
                                   October 30, 1963

     Allowance for Lamp Outages:
     The Monthly Charge Per Unit reflects an outage allowance based on normal 
     and abnormal operating conditions. No further allowance will be made.

MINIMUM CHARGE:

     None.

TERMS OF PAYMENT:

     Bills are due on presentation.

TERM:

     Five years; written contract required.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on 
     Sheets Nos. 6 to 18, inclusive, of this Tariff.

Date of Issue: June 23, 1988                            Effective: June 17, 1988
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
   Filed pursuant to Order of Board of Public Utilities, dated June 17, 1988
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 25
                                                           Original Sheet No. 26


                        THIS SHEET PURPOSELY LEFT BLANK


Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
   Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 27

                               RATE SCHEDULE ISG

                             INTERRUPTIBLE SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     General purposes where the maximum requirement for interruptible gas is not
     less than 150 therms per hour.

CHARACTER OF SERVICE:

     Interruptible.

RATE:  

     Service Charge:
     $100.00 in each month.

     Commodity Charge:
     The monthly rate per therm of gas used will be set equal to the estimated
     price of the customer's alternate fuel capability. The prices for No. 2,
     No. 4, 0.3 percent No. 6 oil and higher than 1.5 percent sulphur No. 6 oil
     alternate fuel capability catagories will be based on the current
     marketability of this gas with respect to alternate fuel sources available
     to Rate Schedule ISG customers. These prices shall be considered to include
     the effect of losses and taxes related to revenues from the sales of this
     gas. These prices will be utilized if they are above the floor price
     defined as follows: the floor price is the average commodity cost of gas
     received by Public Service adjusted to include: (a) the effect of losses
     estimated to be 1.5 percent, (b) a fixed minimum contribution of 1(cent),
     (c) GRI surcharge, (d) taxes related to revenue from the sales of gas, and
     (e) BPU assessment.

     The applicable rate per therm for each alternate fuel oil shall be the 
     applicable oil price, except that such rate shall not fall below the floor 
     price.

     All recoveries resulting from the sales of gas under this rate schedule 
     which exceed the cost of supplying such gas will be used to reduce the 
     monthly cost of gas supplied to firm customers.

     Other Charges:
     See Special Provisions (b), (g) and (o).

MINIMUM CHARGE:

     The monthly minimum charge shall be $100.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of 
     hundred cubic feet used by the "therms multiplier" expressed in therms per 
     hundred cubic feet which appears on every bill.

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of the
     Standard Terms and Conditions. Service to a body politic will not be
     subject to a late payment charge.





Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations 
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                    Original Sheet No. 28

                               RATE SCHEDULE ISG

                             INTERRUPTIBLE SERVICE
                                  (Continued)

TERM:

   One year from the commencement date specified in the Application for
   Interruptible Gas Service required by Special Provision (a). The term may be
   extended by agreement between customer and Public Service.

SPECIAL PROVISIONS:

   Interruptible service will be furnished, when and where available, under the 
   following conditions:

   (a)  Customer will be required to sign an Application for Interruptible Gas
        Service and service will be restricted to the maximum annual and hourly
        requirements, and the location and equipment specified. Attached to the
        Application for Interruptible Gas Service will be a signed affidavit
        certifying the specific grade of fuel oil (or oils) that can physically
        and legally be utilized by the installation being served. The affidavit
        shall include the percentage of operation which can physically and
        legally be served by each alternate fuel. The customer will submit,
        within 30 days of change in operations, a new affidavit to Public
        Service when such a change effects its alternate fuel capability. Public
        Service reserves the right to inspect the customer's operation as to
        alternate fuel capability. Upon request by customer, Public Service may
        deliver available volumes of gas in excess of the maximum hourly
        requirement for limited periods. Such deliveries shall not be deemed to
        constitute a change in the requirements specified in the application.

   (b)  No Service Charge shall apply to customers receiving service under this
        Special Provision who were OPG customers before October 31, 1986. The
        monthly Minimum Charge hereinbefore stated shall apply to former OPG
        customers in each of the months of May through November.

        Service to former OPG customers during the months of January, February
        and March will be available for pilots at a Commodity Charge of
        60.0(cents) per therm. If service is used during such months for any
        other purpose, the Commodity Charge for such service shall be ten times
        the applicable Commodity Charge for Rate Schedule ISG. However, Public
        Services has no obligation to supply gas to former OPG customers during
        the months of January, February and March except for pilots, and may
        discontinue deliveries of gas to customer for other purposes. Special
        Provisions (d), (e), and (g) are not applicable to former OPG customers.

   (c)  Customer may be required to make a payment toward the investment in
        facilities which Public Service installs to provide service under this
        rate schedule when such investment exceeds an amount equal to 10% of the
        estimated first year's revenue from such service. The payment required
        will be a contribution equal to the excess amount, payable on the date
        Public Service accepts the Application for Interruptible Gas Service.
        The making of a payment shall not give the customer any interest in the
        facilities, the ownership being vested exclusively in Public Service.

   (d)  Customer has installed and maintains complete and adequate standby
        equipment and fuel supply for operation with another fuel when the gas
        supply is interrupted.

   (e)  Upon advance notice of eight hours or more, from any hour of any day
        given to customer by Public Service by telephone, telegram or otherwise,
        customer shall discontinue the use of gas until further notice; customer
        shall designate personnel who will accept such notification at any hour
        of any day.


Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                     Original Sheet No. 28A

                               RATE SCHEDULE ISG

                             INTERRUPTIBLE SERVICE
                                  (Continued)

     (f)  The order of interruption shall be as follows: No. 6 oil customers and
          then No. 4 oil and No. 2 oil customers.

     (g)  If customer does not discontinue the use of gas after notification
          pursuant to Special Provision (e), the Commodity Charge shall be 60.0
          (cents) per therm for an amount equal to one hour's maximum
          requirement. Use of this amount shall be limited to a use rate per
          hour not greater than 5% of customer's maximum hourly requirement.

          The charge for all additional gas used shall be ten times the 
          applicable Rate Schedule ISG Commodity Charge.

          Except for pilots, however, Public Service has no obligation to
          supply gas at any time following notice pursuant to Special Provision
          (e) and may discontinue completely all other deliveries of gas to
          customer during the period of interruption.

          If a customer utilizes more than one type of alternate fuel, the rate
          per therm to such customer shall be determined by taking a weighted
          average of the prices determined above. Such weighting will be based
          upon the alternate fuel percentage stated in the customer's affidavit.
          Propane shall be considered to be equivalent to No. 2 oil for purposes
          of setting the appropriate rates under this Tariff.

     (h)  Metering shall include a recording device, furnished by Public
          Service. Customer shall furnish an electrical supply for the operation
          of the recording device and may be required to supply a dedicated
          telephone line.

     (i)  Upon request by Public Service on any day, customer shall furnish an
          estimate of the amount of gas to be taken under this rate schedule
          during the next 24-hour period.

     (j)  Service supplied under this rate schedule shall be separately metered
          and shall not be combined with use under any other rate schedule for
          billing purposes.

     (k)  Service will not be supplied under this rate schedule and any other
          gas rate schedule for the same process or operation at the same
          location.

     (l)  Public Service shall not be liable in any way for any failure in whole
          or in part, temporary or permanent, to deliver gas under this rate
          schedule.

     (m)  When customer is temporarily prevented from receiving service during
          any month by reason of any act of God, accident, strike, or work
          stoppage, legal process, governmental interference, or compliance with
          any governmental order, Public Service at its discretion may, upon
          customer's written request, prorate the Minimum Charge to the number
          of full days customer was able to receive service.

     (n)  Service under this rate schedule is not available for resale.

     (o)  Cogeneration use is applicable to separately metered service for the
          sequential production of electrical energy and useful thermal energy
          from the same fuel source by a Qualifying Facility, as defined in
          Section 201 of the Public Utilities Regulatory Policies Act of 1978
          whose cogeneration equipment meets the efficiency standards set forth
          in Chapter 18 of the Code of Federal Regulations. Sections 292.205 (a)
          and (b). Customer must document that qualifying status has been
          granted by the Federal Energy Regulatory Commission.

          Service to a qualifying cogeneration facility as set forth above is 
          exempt from Gross Receipts and Franchise taxes.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on 
Sheets Nos. 6 to 18, inclusive of this Tariff, except Section 3, Extension of 
Distrubution Mains, Section 5.2. Service Connection Charges, Section 7.6. 
Appliance Adjustments and Section 8.8. Proration of Monthly Charges.


Date of Issue: November 14, 1986                     Effective: October 31, 1986
   Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 29
                                                           Original Sheet No. 30
                                                           Original Sheet No. 31
                                                           Original Sheet No. 32



                        THIS SHEET PURPOSELY LEFT BLANK


Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 


PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                     Original Sheet No. 33 

                             RATE SCHEDULE ISG-PP

                     INTERRUPTIBLE PARITY PRICING SERVICE

APPLICABLE TO USE OF SERVICE FOR:
   
   Rate Schedule ISG service considered non-exempt from the incremental pricing 
   provisions of the Natural Gas Policy Act of 1978.

CHARACTER OF SERVICE:

   Interruptible.

RATE:

   Commodity Charge:

   The rate per therm of gas used will be set equal to the monthly published 
incremental ceiling price, which, under Federal Incremental Pricing Regulations 
would be applicable to the non-exempt usage of each affected interruptible 
customer. The rate determined above will be compared with the floor price
defined as equaling the applicable rate per therm of Rate Schedule ISG.

   In the event that any of the rates determined in accordance with this Tariff 
are below this floor price, the floor price shall be used. All net recoveries 
above the floor price as determined above which result from the sales of gas 
under this rate schedule will be used to reduce the monthly cost of gas supplied
to exempt and non-affected uses subject to the Levelized Raw Materials 
Adjustment Clause.

   Notification of changes in the price of this gas shall be filed with the 
Board of Public Utilities no later than 2 working days subsequent to the 
publication of Federally determined incremental ceiling prices. All other terms,
conditions and provisions of Rate Schedule ISG apply.

TERMINATION:
   
   Parity pricing under this rate schedule shall terminate upon the effective 
date of the implementation by the Federal Energy Regulatory Commission of
regulations determining alternate fuel price ceiling on a basis other than High
Sulfur No. 6 Fuel Oil or upon the effective date of implementation by the
Federal Energy Regulatory Commission of regulations modifying the application of
incremental pricing under the authority of Section 202 of the Natural Gas Policy
Act of 1978, or immediately upon termination of incremental pricing under the
provisions of the Natural Gas Policy Act of 1978, whichever occurs first. In
the event of termination, gas service provided under this rate schedule will be
subject to and priced in accordance with Rate Schedule ISG.



Date of Issue: November 14,1986                      Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                       80 Park Plaza, Newark, New Jersey 07101
     Filed pursuant to Order of Board of Public Utilities, dated October 31,1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY 

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 34


                        THIS SHEET PURPOSELY LEFT BLANK


Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 35

                             RATE SCHEDULE FSG-PP

                          FIRM PARITY PRICING SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     Firm rate schedules service considered non-exempt from the incremental 
     pricing provisions of the Natural Gas Policy Act of 1978.

CHARACTER OF SERVICE:

     Continuous.

RATE:

     The following Commodity Charge will be imposed in lieu of the Commodity 
     Charges stated in each firm rate schedule:

     Commodity Charge:

     The rate per therm of gas will be set equal to the monthly published
     incremental ceiling price, which, under Federal Incremental Pricing
     Regulations would be applicable to the non-exempt usage of each affected
     firm customer. The rate determined above will be compared with a floor
     price defined as equaling the applicable rate per therm of the applicable
     firm rate schedule.

     In the event that any of the rates determined in accordance with this
     Tariff are below this floor price, the floor price shall be used. All net
     recoveries above the floor price as determined above which result from the
     sales of gas under this rate schedule will be used to reduce the monthly
     cost of gas supplied to exempt and non-affected uses subject to the
     Levelized Raw Materials Adjustment Clause.

     Notification of changes in the price of this gas shall be filed with the
     Board of Public Utilities no later than 2 working days subsequent to the
     publication of Federally determined incremental ceiling prices. All other
     terms, conditions and provisions of the applicable firm rate schedules
     shall apply.

TERMINATION:

     Parity pricing under this rate schedule shall terminate upon the effective
     date of the implementation by the Federal Energy Regulatory Commission of
     regulations determining the alternate fuel price ceiling on a basis other
     than High Sulfur No. 6 Fuel Oil or upon the effective date of
     implementation by the Federal Energy Regulatory Commission of regulations
     modifying the application of incremental pricing under the authority of
     Section 202 of the Natural Gas Policy Act of 1978, or immediately upon
     termination of incremental pricing under the provisions of the Natural Gas
     Policy Act of 1978, whichever occurs first. In the event of termination,
     gas service provided under this rate schedule will be subject to and priced
     in accordance with the applicable firm rate schedule.


Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               Third Revised Sheet No. 36
                                                             Superseding
P.U.C.N.J. No. 10 GAS                                Second Revised Sheet No. 36


                               RATE SCHEDULE CIG

                      COGENERATION INTERRUPTIBLE SERVICE

APPLICABLE TO USE OF SERVICE FOR:

      The sequential production of electrical energy and useful thermal energy 
      from the same fuel source by a Qualifying Facility, as defined in Section 
      201 of the Public Utility Regulatory Policies Act of 1978, whose
      cogeneration equipment was installed on or after January 1, 1983, and
      regularly meeting the efficiency standards set forth in Chapter 18 of the
      Code of Federal Regulations, Sections 292.205 (a) and (b).

CHARACTER OF SERVICE:

      Interruptible.

RATE:

      Service Charge:
      $86.00 in each month.

      Commodity Charge:

      The monthly rate per therm of gas used will be set to the average 
      commodity cost of gas received by Public Service adjusted to include: (a)
      the effect of losses estimated to be 1.5 percent, (b) a fixed contribution
      of 3 cents per therm, and (c) GRI surcharge.

      All recoveries resulting from the sales of gas under this rate schedule 
      which exceed the cost of supplying such gas will be used to reduce the
      monthly cost of gas supplied to firm customers.

      Other Charges:
 
      See Special Provisions (e) and (r).

MINIMUM CHARGE:

      The monthly minimum charge shall be $86.00.

DETERMINATION OF THERMS:

      The number of therms used shall be determined by multiplying the number of
      hundred cubic feet used by the "therms multiplier" expressed in therms  
      per hundred cubic feet which appears on every bill.

      The "therms multiplier" shall be on the basis of the actual heating value 
      of the gas used.

TERMS OF PAYMENT:

      Bills are due on presentation subject to a late payment charge at the rate
      of 1.416% per monthly billing period in accordance with Section 8.13 of 
      the Standard Terms and Conditions. Service to a body politic will not be 
      subject to a late payment charge.



Date of Issue: December 27, 1989                     Effective: December 6, 1989
 Issued by ROBERT J. DOUGHERTY, JR.,Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
         Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622
<PAGE>
 


PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                   Original Sheet No. 37


                               RATE SCHEDULE CIG
                      
                      COGENERATION INTERRUPTIBLE SERVICE
                                  (Continued)

TERM:

   One year and thereafter until terminated by five days' notice.

SPECIAL PROVISIONS:

  Interruptible service will be furnished, when and where available, under the 
following conditions:

  (a)    Public Service has available capacity to provide such service.

  (b)    Customer must certify that qualifying status has been granted by the
         Federal Energy Regulatory Commission and will be required to sign an
         Application for Cogeneration Interruptible Gas Service. Service will be
         restricted to the maximum annual and hourly requirements, and the
         location and equipment specified in the Application. Upon request by
         customer, Public Service may deliver available volumes of gas in excess
         of the maximum hourly requirement for limited periods. Such deliveries
         shall not be deemed to constitute a change in the requirements
         specified in the Application.

  (c)    Customer may be required to make a payment toward the investment in
         facilities which Public Service installs to provide service under this
         rate schedule when such investment exceeds an amount equal to 10% of
         the estimated first year's revenue from such service. The payment
         required will be a contribution equal to the excess amount, payable on
         the date Public Service accepts the Application for Cogeneration
         Interruptible Gas Service. The making of a payment shall not give the
         customer any interest in the facilities, the ownership being vested
         exclusively in Public Service.

  (d)    Upon advance notice of eight hours or more, from any hour of any day
         given to customer by Public Service by telephone, telegram or
         otherwise, customer shall discontinue the use of gas until further
         notice; customer shall designate personnel who will accept such
         notification at any hour of any day.

  (e)    If customer does not discontinue the use of gas after notification
         pursuant to Special Provision (d),the Commodity Charge shall be
         60.0(cents) per therm for an amount equal to one hour's maximum
         requirement. Use of this amount shall be limited to a use rate per hour
         not greater that 5% of customer's maximum hourly requirement.

         The charge for all additional gas used shall be ten times the
         applicable Commodity Charge for Cogeneration Interruptible Schedule
         CIG.

         Except for pilots, however, Public Service has no obligation to supply
         gas at any time following notice pursuant to Special Provision (d) and
         may discontinue completely all other deliveries of gas to customer
         during the period of interruption.



Date of Issue: November 14,1986                      Effective: October 31, 1986
      Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                       80 Park Plaza, Newark, New Jersey 07101
     Filed pursuant to Order of Board of Public Utilities, dated October 31,1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 38


                               RATE SCHEDULE CIG

                      COGENERATION INTERRUPTIBLE SERVICE
                                  (Continued)

(f)    Metering shall include a recording device furnished by Public Service.
       Customer shall furnish an electrical supply for the operation of the
       recording device and may be required to supply a dedicated telephone
       line.

(g)    Upon request by Public Service on any day, customer shall furnish an
       estimate of the amount of gas to be taken under this rate schedule during
       the next 24-hour period.

(h)    Service supplied under this rate schedule shall be separately metered and
       shall not be combined with use under any other rate schedule for billing
       purposes.

(i)    Service will not be supplied under this rate schedule and any other gas
       rate schedule for the same process or operation at the same location
       except as specified under Special Provision (n).

(j)    Public Service shall not be liable in any way for any failure in whole or
       in part, temporary or permanent, to deliver gas under this rate schedule.

(k)    When customer is temporarily prevented from receiving service during any
       month by reason of any act of God, accident, strike, or work stoppage,
       legal process, governmental interference, or compliance with any
       governmental order. Public Service at its discretion may, upon customer's
       written request, prorate the Minimum Charge to the number of full days
       customer was able to receive service.

(l)    Public Service agrees that service under this rate schedule will not be
       interrupted unless service to the Rate Schedule ISG No. 6 alternate fuel
       oil customers have already been interrupted.

(m)    Gas supplied under this rate schedule is limited to a quantity equal to
       the lesser of either 150 therms for each net kilowatthour of cogenerated
       electric generation fueled by gas or the quantity of gas actually
       consumed by the cogeneration facility when operated in a cogeneration
       mode as determined by Public Service. Net cogenerated electric generation
       is defined as generation output less energy used to run the congereration
       facility's auxiliary equipment. Auxiliary equipment includes, but is not
       limited to, forced and induced draft fans, boiler feed pumps and
       lubricating oil systems.

(n)    Gas supplied in excess of the quantity described in Special Provision (m)
       will be billed under an applicable rate schedule as determined by Public
       Service except as specified under Special Provision (e).

(o)    Net cogenerated electric generation fueled by natural gas will be 
       determined each month as follows:

           (o-1) For facilities which burn two or more fuels simultaneously for
           cogeneration, net cogenerated electric generation will be allocated
           between such fuels on the Btu input of each fuel.

           (o-2) For facilities which change fuel usage between gas and an
           alternate fuel for cogeneration, net cogenerated electrical
           generation fueled by gas will be based on meter readings taken by the
           customer at the time the fuel change occurs or the portion of the
           allocated amount determined in Special Provision (m) prorated by the
           number of hours of days that the customer used gas.




Date of Issue:  November 14, 1986                   Effective:  October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      Original Sheet No. 39



                               RATE SCHEDULE CIG

                      COGENERATION INTERRUPTIBLE SERVICE
                                  (Continued)



       (p)   Public Service, at its sole discretion, may utilize readings from
             customer or Company-owned meters to determine the quantity of gas
             to which this rate schedule is applicable in lieu of the allocation
             specified in Special Provision (o-1). The customer shall make
             available, and Public Service shall have the right to read, inspect
             and/or test such customer-owned meters during normal working hours.
             Additional gas, electric and/or useful thermal output meters
             required to determine the amount of gas to which this rate schedule
             is applicable will be installed, owned and operated by Public
             Service. However, Public Service may, at its sole option, use
             calculated or estimated data to determine such gas usage.

       (q)   Customer is required to file a monthly report to Public Service
             containing the total amount of kilowatthours produced by the
             cogeneration facility.

       (r)   Experimental Cogeneration Service: Gas service under this Special
             Provision is limited to customers having commitments for service
             from Public Service under this experimental program as of September
             24, 1985. When Experimental Cogeneration Service is supplied, the
             following provisions shall apply:

             (r-1) In lieu of the Commodity Charge calculation hereinbefore set
                   forth, the fixed contribution in any month shall be 1 cent
                   per therm.

             (r-2) In lieu of the term hereinbefore set forth, the term shall be
                   two years, except Qualifying Facilities which have made
                   substantial investments in cogeneration facilities, including
                   but not limited to the purchase of a diesel engine or gas
                   turbine with associated waste heat boiler equipment or a
                   steam turbine, installed specifically to receive service
                   under this Special Provision, shall have the option to renew
                   service at the same service location for such facilities
                   through August 22, 1994.

       (s)   Service under this rate schedule is not available for resale.

STANDARD TERMS AND CONDITIONS:

       This rate schedule is subject to the Standard Terms and Conditions of 
Sheets Nos. 6 to 18, inclusive of this Tariff, except Section 3, Extension of 
Distribution Mains, Section 5.2, Service Connection Charges, Section 7.6,
Appliance Adjustments and Section 8.8, Proration of Monthly Charges.








Date of Issue:  November 14, 1986                  Effective:  October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                   80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               Third Revised Sheet No. 40
                                                             Superseding
P.U.C.N.J. No. 10 GAS                                Second Revised Sheet No. 40

                              RATE SCHEDULE TSG-F

                        FIRM TRANSPORTATION GAS SERVICE


APPLICABLE TO USE OF SERVICE FOR:

     General purposes where the maximum requirement for firm gas is not less
     than 150 therms per hour, where the customer has the installed capability
     to utilize an alternate type of fuel and where the customer has a current
     fully executed contract(s) to purchase natural gas supplies and transport
     these supplies to interconnection points with Public Service's distribution
     system from which Public Service may receive and physically transport and
     deliver the customer's purchased gas supply.

CHARACTER OF SERVICE:
 
     Continuous transportation subject to Public Service's available capacity to
     provide such service.   

RATE:

     Service Charge:
     $250.00 in each month.

     Transportation Charge for the first 1,000 therms:
     17.412(cents) per therm for the first..........1,000 therms transported in 
     each month

     Transportation Charge in excess of 1,000 therms in the months of May 
     through October:

     10.737(cents) per therm for the next...........4,000 therms transported in
     each month    
      7.000(cents) per therm in excess of...........5,000 therms transported in 
     each month 

     Transportation Charge in excess of 1,000 therms in the months of November
     through April:
     14.445(cents) per therm in excess of...........1,000 therms transported in 
     each month

     These charges do not apply to gas sold to customer by PSE&G pursuant to 
     Special Provisions (b) and (p).

     Other Charges:
     See Special Provisions (b), (f), (i) and (p).

MINIMUM CHARGE:

     The monthly minimum charge shall be $250.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of
     hundred cubic feet used by the "therms multiplier" expressed in therms per
     cubic feet which appears on every bill.

     The "therms multiplier" shall be on the basis of the actual heating value 
     of the gas used.

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of the
     Standard Terms and Conditions. Service to a body politic will not be 
     subject to a late payment charge.



Date of Issue: January 16, 1989                      Effective: January 12, 1989
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated January 12, 1989
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS

                                                     Second Revised Sheet No. 41
                                                             Superseding
                                                      First Revised Sheet No. 41

                              RATE SCHEDULE TSG-F

                        FIRM TRANSPORTATION GAS SERVICE
                                  (Continued)

TERM:

    A minimum of one year from the commencement date specified in the
    Application for Firm Transportation Gas Service required by Special
    Provision (a). The term may be extended by agreement between customer and
    Public Service.

SPECIAL PROVISIONS:

(a) Customer will be required to sign a service agreement and service will be
    restricted to the maximum hourly, daily and monthly requirements specified.
    Upon request by the customer, Public Service may, in its sole discretion,
    accept and deliver natural gas volumes in excess of the maximum levels
    specified in the service agreement.

(b) Customer shall be responsible for scheduling the deliveries of its gas to
    Public Service and for maintaining a balance between its deliveries to
    Public Service and its usage.

    Customer and Public Service will schedule deliveries on a daily basis during
    any month on a mutually acceptable basis giving customer reasonable
    flexibility consistent with Public Service's operating limitations. Public
    Service shall maintain a cumulative account balance for customer which shall
    be debited with quantities of gas received by Public Service and credited
    with quantities of gas used by customer.

    If customer ends a season (end of months of April and October) with a
    positive account balance in excess of 30% of customer's usage in such
    season, customer shall pay Public Service 7 cents per therm for such
    positive balance in excess of 30%. Additionally, Public Service may
    interrupt the receipt of customer's gas until customer's balance in excess
    of 30% is eliminated.

    If customer ends a season with a negative account balance in excess of 15%
    of the quantity used by customer in such season, the quantity in excess of
    15% will be purchased by the customer at the LVG Rate Schedule winter tail
    block rate (or successor rate schedule) plus the Raw Materials Adjustment
    Charge.

    Upon expiration of the service agreement, Public Service shall review the
    status of customer's account. In the event customer's account has a negative
    balance, the customer will be charged the LVG winter tail block rate (or
    successor rate) plus the Raw Materials Adjustment Charge for each therm of
    imbalance. If customer's account has a positive balance, customer will have
    thirty days within which to balance its account. If after the thirty days,
    customer has failed to balance his account, Public Service may retain at no
    cost the gas quantities then constituting the imbalance in customer's
    account, free and clear of any claims to title.

(c) Customer or customer's agent shall provide Public Service a statement
    specifying the quantities of gas delivered to Public Service for such
    customer. Failure to provide this information timely shall give Public
    Service the right to determine deliveries based upon records in its
    possession. Customer will be responsible for resolving with transporter any
    disagreement customer has relative to the accuracy of transporter's record
    of deliveries of gas to Public Service for customer.

(d) Customer or customer's agent shall provide Public Service with a minimum of
    twenty-four hours prior notice that the natural gas volumes customer intends
    to have transporter deliver to Public Service for customer's account.

(e) Upon advance notice of eight hours or more, from any hour of any day given
    to customer by Public Service by telephone, telegram or otherwise, customer
    shall discontinue the use of gas until further notice. Customer shall
    designate personnel who will accept such notification at any hour of any
    day. Public Service will not interrupt service to customer with respect to
    quantities of gas being delivered to Public Service by customer on any day
    unless operating limitations on Public Service's system preclude the
    delivery of such gas to customer.

Date of Issue: January 16, 1989                      Effective: January 12, 1989
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated January 12, 1989
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               First Revised Sheet No. 42
                                                             Superseding
P.U.C.N.J. No. 10 GAS                                    Original Sheet No. 42


                              RATE SCHEDULE TSG-F

                        FIRM TRANSPORTATION GAS SERVICE
                                  (Continued)


(f)    If customer does not discontinue the use of gas after notification
       pursuant to Special Provision (e), customer shall be charged ten times
       the commodity charge contained in Rate Schedule ISG for 0.3% No. 6 Oil
       (or successor rate schedule) for each therm of gas used by the customer
       in excess of the number of the therms of gas delivered to Public Service
       by the customer during each day of any interruption period.

(g)    Upon the expiration of the service agreement, customer shall be eligible
       to receive gas service under Rate Schedule LVG (or successor rate
       schedule) providing customer notifies Public Service within 90 days of
       such expiration of its election to purchase such service. After ninety
       days customer's eligibility to receive gas sales service shall be the
       same as the eligibility of any new person or entity which is at the time
       requested gas sales service.

(h)    Customer shall: make all the arrangements necessary; obtain from
       appropriate regulating bodies any approvals necessary; prepare any
       reports or other filings which any regulatory body may require; and be
       responsible for all costs, charges and expenses including but not limited
       to the payment to appropriate governmental entities for any tax or
       assessment relative to the acquisition, transportation or use of
       customer's gas supply.

(i)    Customer will be required to make payment toward all the investment in
       facilities which Public Service installs to provide service under this
       rate schedule. Public Service will refund one-third of the TSG-F charge
       annually, up to a five-year period, not to exceed the cost of investment.
       The making of a payment shall not give the customer any interest in the
       facilities, the ownership being vested exclusively in Public Service.

(j)    Customer warrants that at the time of delivery of gas to Public Service 
       it will have good title to deliver all gas volumes made available.

(k)    Metering shall include a recording device, furnished by Public Service.
       Customer shall furnish an electrical supply source, an individual message
       business control office line and arrange for data transmission of
       metering information and termination of data on an RJ45S modular jack.

(l)    Service supplied under this rate schedule shall be separately metered and
       shall not be combined with use under any other rate schedule for billing
       purposes. Customer shall not be eligible to receive service under this
       rate schedule and any other rate schedule for the same equipment or for
       equipment supplying a common steam header during the term of the Service
       Agreement.

(m)    Customer has installed and maintains complete and adequate standby
       equipment and fuel supply for operation with another fuel when the gas
       supply is interrupted.

(n)    Public Service shall not be liable in any way for any failure in whole or
       in part, temporary or permanent, to deliver gas under this rate schedule.

(o)    Service under this rate schedule is not available for resale.

(p)    Public Service, at its option, may sell gas to customer at a rate
       equivalent to the commodity charge under Rate Schedule ISG for the
       alternate fuel type specified in customer's affidavit, subject to the TSG
       floor price.

STANDARD TERMS AND CONDITIONS:

       This rate schedule is subject to the Standard Terms and Conditions on
       Sheets Nos. 6 to 18, inclusive, of this Tariff, except Section 3,
       Extension of Distribution Mains, Section 5.2, Service Connection Charges,
       Section 7.6, Appliance Adjustments and Section 8.8, Proration of Monthly
       Charges.






Date of Issue:  December 27, 1989                   Effective:  December 6, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY
                                                           Original Sheet No. 43
P.U.C.N.J. No. 10 GAS

                             RATE SCHEDULE TSG-NF

                      NON-FIRM TRANSPORTATION GAS SERVICE


APPLICABLE TO USE OF SERVICE FOR:

   General purposes where the maximum requirement for interruptible gas is not
   less than 150 therms per hour, where the customer has the installed
   capability to utilize an alternate type of fuel, and where the customer has a
   current fully executed contract(s) to purchase natural gas supplies and
   transport these supplies to interconnection points with Public Service's
   distribution system from which Public Service may receive and physically
   transport and deliver the customer's purchased gas supply.

CHARACTER OF SERVICE:

   Interruptible transportation.

RATE:

   Service Charge:
   $250.00 in each month.

   Transportation Charge:
   7.0 cents per transportation therm used by customer.

   This charge does not apply to gas sold to customer by PSE&G pursuant to 
   Special Provisions (b) and (h).

   Other Charges:
   See SPECIAL PROVISIONS (b), (f), (h), and (j).

MINIMUM CHARGE:

   The monthly minimum charge shall be $250.00. 

DETERMINATION OF THERMS:

   The number of therms used shall be determined by multiplying the number of
   hundred cubic feet used by the "therms multiplier" expressed in therms per
   hundred cubic feet which appears on every bill.

   The "therms multiplier" shall be on the basis of the actual heating value of
   the gas used.

TERMS OF PAYMENT:

   Bills are due on presentation subject to a late payment charge at the rate of
   1.416% per monthly billing period in accordance with Section 8.13 of the
   Standard Terms and Conditions. Service to a body politic will not be subject
   to a late payment charge.

TERM:

   A minimum of one year from the commencement date specified in the Application
   for Non-Firm Transportation Gas Service required by Special Provision (a).
   The term may be extended by agreement between customer and Public Service.


Date of Issue: January 16, 1989                      Effective: January 12, 1989
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated January 12, 1989
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              First Revised Sheet No. 44
                                                            Superseding
P.U.C.N.J. No. 10 GAS                                  Original Sheet No. 44

                             RATE SCHEDULE TSG-NF

                      NON-FIRM TRANSPORTATION GAS SERVICE
                                  (Continued)

SPECIAL PROVISIONS:

(a)  Customer will be required to sign a service agreement and service will be
     restricted to the maximum annual, daily, and hourly requirements, and the
     location and equipment specified. Attached to the service agreement will be
     a signed affidavit, certifying the specific grade of fuel oil (or oils)
     that can physically and legally be utilized by the installation being
     served. The affidavit shall include the percentage of operation which can
     physically and legally be served by each alternate fuel. The customer will
     submit, within 30 days of change in operations, a new affidavit to Public
     Service when such change effects its alternate fuel capability. Public
     Service reserves the right to inspect the customer's operation as to
     alternate fuel capability. Upon request by customer, Public Service may
     deliver available volumes of gas in excess of the maximum requirements, for
     limited periods. Such deliveries shall not be deemed to constitute a change
     in the requirements specified in the application.

(b)  Customer shall be responsible for scheduling the deliveries of its gas to
     Public Service and for maintaining a balance between its deliveries to
     Public Service and its usage. Unless prior agreement is reached with Public
     Service, gas volumes that are delivered by customer to Public Service
     during any month shall be delivered at a substantially uniform daily rate.
     Public Service shall maintain a cumulative gas account balance for customer
     which shall be debited with quantities of gas received by Public Service
     and credited with quantities of gas used by customer. If at the end of any
     month customer's account balance is positive or negative in any amount in
     excess of 10% of customer's usage in such month, customer shall pay Public
     Service 3 cents per therm for any balance in excess of 10%. In any month
     immediately following a month for which customer was assessed an imbalance
     charge for having a negative balance in excess of 10%, customer, upon
     notification to Public Service, may elect to bring its account balance
     within 10% by purchasing gas form PSE&G at a rate equal to 110% of the
     commodity rate for service under Rate Schedule ISG for the type of
     alternate fuel specified in customer's affidavit.

     Upon expiration of the service agreement, Public Service shall review the
     status of customer's account. In the event customer's account has a
     negative balance, customer will be charged 110% of the applicable commodity
     charge under Rate Schedule ISG (or successor rate) for each therm of
     negative balance. If customer's account has a positive balance, customer
     will have thirty days within which to balance its account. If after thirty
     days, customer has failed to balance his account, Public Service may retain
     at no cost the gas volumes then constituting the balance in customer's
     account, free and clear of any claims to title.

(c)  Customer or customer's agent shall provide Public Service a statement
     specifying the quantities of gas delivered to Public Service for such
     customer. Failure to provide this information timely shall give Public
     Service the right to determine deliveries based upon records in its
     possession. Customer will be responsible for resolving with transporter
     any disagreement customer has relative to the accuracy of transporter's
     record of deliveries of gas to Public Service for customer.

(d)  Customer or customer's agent shall provide Public Service with a minimum of
     twenty-four hours prior notice of the natural gas volumes customer intends
     to have transporter deliver to Public Service for customer's account.

(e)  Upon advance notice of eight hours or more, from any hour of any day given
     to customer by Public Service by telephone, telegram or otherwise, customer
     shall discontinue the use of gas until further notice; customer shall
     designate personnel who will accept such notification at any hour of any
     day. Public Service will not interrupt service to customer with respect to
     any quantities of gas being delivered to Public Service by customer on any
     day unless operating limitations on Public Service's system preclude the
     delivery of such gas to customer.

(f)  If customer does not discontinue the use of gas after notification pursuant
     to Special Provision (e), customer shall be charged ten times the commodity
     charge contained in Rate Schedule ISG for 0.3% No. 6 Oil (or successor rate
     schedule) for each therm of gas used by the customer in excess of the
     number of the therms of gas delivered to Public Service by the customer
     during each day of any interruption period.

Date of issue: December 27, 1989                     Effective: December 6, 1989
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               First Revised Sheet No. 45
                                                             Superseding        
P.U.C.N.J. No. 10 GAS                                   Original Sheet No. 45

                             RATE SCHEDULE TSG-NF

                      NON-FIRM TRANSPORTATION GAS SERVICE
                                  (Continued) 


(g) After the expiration of the service agreement, customer's eligibility to
    receive gas sales service shall be the same as the eligibility of any person
    or entity which is at that time requesting gas sales service as a new
    customer.

(h) Public Service, at its option, may sell gas to customer at a rate equal to
    the applicable commodity rate for service under Rate Schedule ISG for the
    alternate fuel category designated in customer's affidavit, subject to the
    TSG floor price.

(i) Customer shall: make all the arrangements necessary; obtain from appropriate
    regulating bodies any approvals necessary; prepare any reports or other
    filings which any regulatory body may require; and be responsible for all
    costs, charges and expenses including but not limited to the payment to
    appropriate governmental entities for any tax or assessment relative to the
    acquisition, transportation, or use of customer's gas supply.

(j) Customer will be required to make payment toward all the investment in
    facilities which Public Service installs to provide service under this rate
    schedule. The making of a payment shall not give the customer any interest
    in the facilities, the ownership being vested exclusively in Public Service.

(k) Customer warrants that at the time of delivery of gas to Public Service it 
    will have good title to deliver all gas volumes made available.

(l) Metering shall include a recording device, furnished by Public Service.
    Customer shall furnish an electrical supply source, an individual message
    business control office line and arrange for data transmission of metering
    information and termination of data on an RJ45S modular jack.

(m) Service supplied under this rate schedule shall be separately metered and
    shall not be combined with use under any other rate schedule for billing
    purposes. Customer shall not be eligible to receive service under this rate
    schedule and any other rate schedule for the same equipment or for equipment
    supplying a common steam header during the term of this agreement.

(n) Customer has installed and maintains complete and adequate standby equipment
    and fuel supply for operation with another fuel when the gas supply in
    interrupted.

(o) Public Service shall not be liable in any way for any failure in whole or in
    part, temporary or permanent, to deliver gas under this rate schedule.

(p) Service under this rate schedule is not available for resale.

STANDARD TERMS AND CONDITIONS:

    This rate schedule is subject to the Standard Terms and Conditions on Sheets
    Nos. 6 to 18, inclusive, of this Tariff, except Section 3, Extension of
    Distribution Mains, Section 5.2 Service Connection Charges, Section 7.6,
    Appliance Adjustments and Section 8.8, Proration of Monthly Charges.



Date of Issue: December 27, 1989                     Effective: December 6, 1989
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622

<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10-GAS
CANCELLING 
B.P.U. NO. 9-GAS
- --------------------------------------------------------------------------------


                                   EXHIBIT B

                           ELIZABETHTOWN BASE RATES





                           ELIZABETHTOWN GAS COMPANY

                            TARIFF FOR GAS SERVICE

- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective: Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabethtown Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners
dated February 1, 1990 in Docket No. GR88121321

<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10-GAS
CANCELLING                                                  SECTION I
B.P.U. NO. 9-GAS                                            ORIGINAL SHEET NO. 1
- --------------------------------------------------------------------------------


                               TABLE OF CONTENTS

                                   SECTION 1


                                                   Sheet No.
                                                   ---------
                Cover Page                         Unnumbered
                Table of Contents                    1, 2, 3
                Territory Served                       4
                Standard Terms and Conditions       5 thru 29





- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective: Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabethtown Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners
dated February 1, 1990 in Docket No. GR88121321



<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10-GAS
CANCELLING                                                  SECTION I
B.P.U. NO. 9-GAS                                            ORIGINAL SHEET NO. 2
- --------------------------------------------------------------------------------

                               TABLE OF CONTENTS

                                  SECTION II

             SERVICE CLASSIFICATIONS LISTED BELOW ARE AVAILABLE IN
           THE ENTIRE TERRITORY SERVED BY ELIZABETHTOWN GAS COMPANY

                                                        Service 
Applicable to:                       For:            Classification   Seet No.
- --------------                 -----------------     --------------   --------
FIRM SALES SERVICE                                                       
- ------------------                                                       
                                                                         
Residential Customers          Residential Service        RS          1, 2, 3
                                                                        
Commercial and Industrial      General Service            GS          4, 5, 6
Customers                                                                
                                                                         
Multiple Family, Governmental  Heating, Cooking, Water   MFS          7, 8, 9
Buildings, Religious           Heating, and other uses                   
Institutions, Hospitals and                                              
Nursing Homes                                                            
                                                                         
Multiple Family, Governmental  Building Heating and       TC          10, 11, 12
Buildings, Religious           Water Heating                          13, 14
Institutions, Hospitals and                                              
Nursing Homes and                                                        
Commerical Customers                                                     
                                                                         
Commercial and Industrial      Large Volume Demand       LVD          15, 16, 17
Customers                      Service                                   
                                                                         
Industrial Customers           Industrial Process        IPF          18, 19
                               Service                                20, 21, 22
                                                                         
Commercial and Industrial      Cogeneration Service      CSF          23, 24, 25
Service                                                                  
                                                                         
Commercial and Industrial      Air Conditioning          CIAC         26, 27, 28
Service                        and Refrigeration                         
                                                                         
All Customers                  Unmetered Outdoor Gas      GLS         29, 30
                               Lighting

- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective: Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabethtown Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners
dated February 1, 1990 in Docket No. GR88121321

<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10-GAS
CANCELLING                                                  SECTION I
B.P.U. NO. 9-GAS                                            ORIGINAL SHEET NO. 3
- --------------------------------------------------------------------------------

                               TABLE OF CONTENTS

                                  SECTION II
                                  (Continued)

             SERVICE CLASSIFICATIONS LISTED BELOW ARE AVAILABLE IN
           THE ENTIRE TERRITORY SERVED BY ELIZABETHTOWN GAS COMPANY

                                                    Service      
Applicable to:                    For:           Classification  Seet No.
- --------------              -----------------    --------------  --------
NON-FIRM SALES SERVICE                                                     
- ----------------------                                                     
                                                                           
Commercial and Industrial Interruptible Cogeneration   CSI    31, 32, 33,
Service                   Service                             34, 35
                                                                           
Commercial and Industrial Interruptible Service        IS     36, 37, 38,
Service                                                       39, 40
                                                                           
Industrial and Public     Contract Service             CS     41, 42, 43, 44,
Utility Customers                                             45, 46, 47
                                                                           
Industrial Service        Supplemental Interruptible  SIS     48, 49, 50
                          Service                                       
                                                                           
SPECIAL SERVICES                                                           
- ----------------                                                           
                                                                           
Commercial and Industrial Firm Transportation Service  FTS    51, 52, 53, 54,
Service                                                       55, 56, 57, 58
                                                                           
Industrial Customers      Interruptible Transportation ITS    59, 60, 61, 62, 63
                          Service                             64, 65, 66, 67
                                                                           
Commercial and Industrial Storage Service               SS    68, 69, 70, 71
Service                                                                    
                                                                           
RIDERS                                                                     
- ------                                                                     
                                                                           
Rider "A" to Tariff for Gas Service                           72, 73, 74
Levelized Gas Adjustment Clause                                            
                                                                           
Supplement to Rider "A"                                       75

- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective: Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabethtown Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners
dated February 1, 1990 in Docket No. GR88121321

<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10-GAS
CANCELLING                                                 SECTION II
B.P.U. NO. 9-GAS                                           ORIGINAL SHEET NO. 72
- --------------------------------------------------------------------------------

                                   RIDER "A"

                        LEVELIZED GAS ADJUSTMENT CLAUSE

APPLICABLE TO ALL SERVICE CLASSIFICATIONS EXCEPT SERVICE CLASSIFICATION CFS, 
CIAC, GLS, CSI, CS, SIS, FTS, ITS AND SS

        Whenever the cost to the Gas Company of purchased pipeline gas or the 
cost of any gas or fuel to be used as a substitute for or supplemental to 
purchased pipeline gas including the cost of storing said gases or fuel and GRI 
costs is increased or decreased from the $0.3100 per therm costs, included in 
base tariff rates, the rate for gas quoted in this Tariff under the Service 
Classifications shown above, except as may be otherwise provided for in the 
individual Service Classification, shall be adjusted by applying a Levelized Gas
Adjustment (LGAC) rate determined as follows:

        (a)  The cost to the Gas Company of gas as (described above) during the
             twelve-month period beginning the next October 1 and going through
             the succeeding September 30 shall be estimated.

        (b)  The total costs as defined in (a) above shall be added to the 
             inventory value estimated as of the next October 1 less the 
             inventory value as estimated for the succeeding September 30 in the
             "Monthly Ending Inventory Calculation".

        (c)  The sum resulting in (b) above shall be adjusted to reflect:

             1. (Over) under recovery of costs from the preceding LGAC period.
                Such costs shall be determined using the methodology, as
                described herein as applied to actual incurred costs and gas
                costs recovered.

- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective: Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabethtown Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners
dated February 1, 1990 in Docket No. GR88121321



<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10 - GAS
CANCELLING                                                            SECTION II
B.P.U. NO. 9 - GAS                                         ORIGINAL SHEET NO. 73
- --------------------------------------------------------------------------------

                                   RIDER "A"

                        LEVELIZED GAS ADJUSTMENT CLAUSE
                        -------------------------------
                                  (continued)

          2.  Interest on the cumulative (over) under recovery of cost from the
              preceding LGAC period but only when the interest is a credit.
              Such interest being calculated on the cumulative (over) under
              recovery for each month of the prior period LGAC on the average
              beginning and ending monthly balance at a rate equivalent to the
              Company's allowed overall rate of return.

          3.  Estimated supplier refunds for the twelve-month period beginning
              on the next October 1 and going through the succeeding 
              September 30.

          4.  Adjustments as may result from the operation of other tariff 
              provisions.

     (d)  The adjusted costs resulting from (c) above shall be divided by the
          estimated applicable sales for the period beginning the next October 1
          and going through the succeeding September 30, or the period over
          which the rate is to be in effect, to determine the unit cost. The
          difference between this unit cost and the unit charge of $0.3100 per
          therm in base tariff rates shall be multiplied by a factor to adjust
          for increases in taxes and assessments. The result shall be the
          Levelized Gas Adjustment (LGAC) rate.

     The Levelized Gas Adjustment rate as calculated in (d) will be in effect 
for a period beginning on or about October 1 of each year and going through 
September 30 of the following year. It may be adjusted to reflect changes in 
prices or volumes significantly different than those initially proposed and for 
reconciliations between estimated and actual results in the previous LGAC 
period.


- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective:  Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabethtown Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners dated 
February 1, 1990 in Docket No. GR88121321

<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10 - GAS
CANCELLING                                                            SECTION II
B.P.U. NO. 9 - GAS                                         ORIGINAL SHEET NO. 74
- --------------------------------------------------------------------------------

                                   RIDER "A"

                        LEVELIZED GAS ADJUSTMENT CLAUSE
                        -------------------------------
                                  (continued)


      The annual filing for the adjustment on or about October 1 of each year 
shall be made no later than July of each year and shall be based on actual 
figures and experiences then available with estimates of remaining requirements.















- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective:  Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabeth Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners dated 
February 1, 1990 in Docket No. GR88121321

<PAGE>
 
ELIZABETHTOWN GAS COMPANY
B.P.U. NO. 10 - GAS
CANCELLING                                                            SECTION II
B.P.U. NO. 9 - GAS                                            FIRST SHEET NO. 75
- --------------------------------------------------------------------------------

                            SUPPLEMENT TO RIDER "A"

                        LEVELIZED GAS ADJUSTMENT CLAUSE
                        -------------------------------





          Applicable to Commodity Volumes
        of gas used under all service
        classifications except "Service
        Classification - CSF, CIAC, GLS,
        CSI, CS, SIS, FTS, ITS and SS                         $0.0300 per therm










- --------------------------------------------------------------------------------
Date of Issue:  February 1, 1990                   Effective:  Service rendered
                                                   on and after February 1, 1990
Issued by:  Frederick W. Sullivan, Pres.
            One Elizabeth Plaza
            Union, New Jersey

Filed Pursuant to Order of the Board of Public Utility Commissioners dated 
February 1, 1990 in Docket No. GR88121321


<PAGE>
 
                                   EXHIBIT C
                                   ---------

                                      [*]
<PAGE>
 
                                   EXHIBIT D
                                   ---------

                                      [*]
<PAGE>
 
                                   EXHIBIT E
                                   ---------

                                      [*]
<PAGE>
 
                                   EXHIBIT F
                                   ---------

                                      [*]
<PAGE>
 
                                   EXHIBIT G
                                   ---------

                                      [*]
<PAGE>
 
                                                                       EXHIBIT H
                                                                       LETTER #1






                                 June 20, 1990


Cogen Technologies Linden Limited, L.P.
1600 Smith Street
Suite 5000, 50th Floor
Houston, TX  77002


          Re:  Gas Service Agreement Dated June 22, 1990


Gentlemen:

          Pursuant to paragraph 3.10 of the above-captioned agreement (the 
"Agreement"), Public Service Electric and Gas Company and Elizabethtown Gas 
Company ("Sellers") hereby represent that they have entered into contracts with 
one or more natural gas interstate pipeline companies ("Transporter(s)") for 
Sellers to acquire firm transportation capacity on Transporter(s)' systems and 
that, when in service, such capacity, combined with other capacity available to 
Sellers, will be sufficient to permit Sellers to render the services to be 
provided under the Agreement. Consistent with said paragraph 3.10, please 
furnish the required [*] letter of credit to Sellers within five (5) business 
days of the Construction Conversion Date or, if later, five (5) business Days of
your receipt of this letter.

                                       Very truly yours,

<PAGE>
 
                                                                       EXHIBIT H
                                                                       LETTER #2






                                 June 20, 1990


Cogen Technologies Linden Limited, L.P.
1600 Smith Street
Suite 5000, 50th Floor
Houston, TX  77002


          Re:  Gas Service Agreement Dated June 22, 1990


Gentlemen:

          Pursuant to paragraph 3.10 of the above-captioned agreement (the 
"Agreement"), Public Service Electric and Gas Company and Elizabethtown Gas 
Company ("Sellers") hereby represent that the Federal Energy Regulatory 
Commission ("FERC") has issued a final order granting a certificate of public 
convenience and necessity to one or more natural gas interstate pipeline 
companies ("Transporter(s)") to provide firm transportation capacity to Sellers 
which, when in service together with other capacity available to Sellers, will 
be sufficient to permit Sellers to render firm, uninterruptible delivery service
of at least the Minimum Quantity pursuant to the terms of the Agreement. 
Consistent with said paragraph 3.10, please furnish the required [*] letter of 
credit within five (5) business days of your receipt of this letter.

                                       Very truly yours,
<PAGE>
 
                                                                       EXHIBIT H
                                                                       LETTER #3






                                 June 20, 1990


Cogen Technologies Linden Limited, L.P.
1600 Smith Street
Suite 5000, 50th Floor
Houston, TX  77002


          Re:  Gas Service Agreement Dated June 22, 1990


Gentlemen:

          Pursuant to paragraph 3.10 of the above-captioned agreement (the 
"Agreement"), Public Service Electric and Gas Company and Elizabethtown Gas 
Company ("Sellers") hereby represent that Sellers will have available firm 
transportation capacity on the systems of one or more natural gas interstate 
pipeline companies and will be prepared on the Requested Service Date to render 
firm, uninterruptible delivery service of at least the Minimum Quantity under, 
and subject to the other provisions of, the Agreement on a year-round basis in 
accordance with the terms of the Agreement. Consistent with said paragraph 3.10,
please furnish the final, required [*] letter of credit within five (5) business
days of your receipt of this letter.

                                       Very truly yours,


<PAGE>
 
                                                                   EXHIBIT 10.33

                             GAS SERVICE AGREEMENT

                                    BETWEEN

                              CAMDEN COGEN, L.P.

                                  (as Buyer)

                                      AND

                    PUBLIC SERVICE ELECTRIC AND GAS COMPANY

                                  (as Seller)



[*] Indicates provisions redacted pursuant to request for confidential treatment
    submitted to the Securities and Exchange Commission pursuant to Rule 406
    under the Securities Act of 1933.
<PAGE>
 
                                     INDEX
                                     -----
                                                                            PAGE
                                                                            ----

ARTICLE 1           DEFINITIONS                                               2

ARTICLE 2           COMMITMENTS                                              10

ARTICLE 3           SERVICES                                                 11

ARTICLE 4           RATES AND CHARGES                                        23

ARTICLE 5           DELIVERY AND RECEIPT                                     25

ARTICLE 6           POSSESSION, TITLE, WARRANTY AND LIABILITY                27
                                                                 
ARTICLE 7           TERM                                                     29

ARTICLE 8           ACCOUNTING AND PAYMENT                                   30

ARTICLE 9           MEASUREMENT AND DELIVERY CONDITIONS                      34

ARTICLE 10          FACILITIES                                               36

ARTICLE 11          FORCE MAJEURE                                            38

ARTICLE 12          LIMITATION OF LIABILITY                                  41

ARTICLE 13          DEFAULTS; RIGHT TO CURE                                  42

ARTICLE 14          ACTIONS REQUIRED TO SATISFY CERTAIN CONDITIONS           43

ARTICLE 15          ASSIGNMENT OF INTERESTS                                  46

ARTICLE 16          ECONOMIC CHANGES                                         48

ARTICLE 17          NOTICES AND ADDRESSES                                    51

ARTICLE 18          MISCELLANEOUS                                            52

ARTICLE 19          ARBITRATION                                              54


EXHIBIT "A"         [*]
EXHIBIT "B"         SELLERS' BASE RATES
EXHIBIT "C"         [*]
EXHIBIT "D"         [*]
EXHIBIT "E"         [*]
EXHIBIT "F"         [*]
EXHIBIT "G"         [*]
                    
EXHIBIT "H"         SELLERS' LETTERS OF REPRESENTATIONS
<PAGE>
 
                             GAS SERVICE AGREEMENT

                                   PREAMBLE
                                   --------

         THIS GAS SERVICE AGREEMENT, hereinafter referred to as the "Agreement",
is entered into and effective this 15th day of May, 1991, between CAMDEN COGEN,
L.P., hereinafter referred to as "Buyer", and PUBLIC SERVICE ELECTRIC AND GAS
COMPANY ("PSE&G"), hereinafter referred to as "Seller".

         WHEREAS, Buyer proposes to finance, construct, own and operate a
cogeneration facility in Camden, New Jersey (the "Facility") and has entered
into a Power Purchase and Interconnection Agreement under which it
will sell the net energy and capacity of the Facility; and

         WHEREAS, Seller proposes to transport and sell, and Buyer proposes to
receive and purchase, Natural Gas to be used as fuel for the generation of
electricity and steam at the Facility; and

         WHEREAS, Seller desires to obtain a firm supply of Natural Gas for its
system during certain Peak Periods and Buyer proposes to provide Seller such
firm supply as provided herein.

         NOW, THEREFORE, in consideration of the foregoing and the promises and
covenants hereinafter set forth, the sufficiency of which is hereby
acknowledged, Buyer and Seller agree as follows:
<PAGE>
 
                                   ARTICLE 1

                                  DEFINITIONS
                                  -----------

         Unless another meaning is expressly stated, the following words and
terms wherein used in this Agreement shall have the following meaning:

       1.1      "Agreement" shall mean this contract, including all exhibits
                 ---------
attached hereto and amendments hereof that may be made from time to time.

       1.2      "Alternate Fuel" shall mean "Jet A" jet fuel or other
                 --------------
fuel that Buyer is capable of utilizing in the Cogeneration Facility.

       1.3      "Annual Period" shall mean any one of a succession of
                 -------------
consecutive twelve-month periods, the first of which shall begin on the Date of
Commercial Operation of the Facility.

       1.4      [*]

                                      -2-
<PAGE>
 
[*]

       1.5    "Base Rates" shall mean those rates contained in all
               ----------
of Seller's gas tariff rate schedules (designated as P.U.C.N.J. No. 10 Gas) as  
updated from time to time, excluding Gas costs. Copies of Seller's rate 
schedules are attached as Exhibit "B".

       1.6    "BPU" shall mean the New Jersey Board of Public
               ---
Utilities or successor agency.

       1.7    "Buyer"  shall mean Camden Cogen, L.P., a Delaware
               -----
limited partnership.

       1.8    "Cogeneration Facility" or "Facility" shall mean the waste 
               ---------------------      --------
heat boilers, G.E. Frame 7 gas turbine, steam turbine, generator, fuel oil
storage and all appurtenant structures and equipment to be constructed,
installed, owned/leased, operated and maintained by Buyer at Paperboard, for the
purpose of generating steam and electricity and other forms of useful thermal
energy output, and having a nameplate rating of 140 MW.

       1.9    "Commercial Operation" shall mean the production of
               --------------------
electric power and energy by all the electric generation units at the
Cogeneration Facility and the supply of such electric power and energy to PSE&G
after the Date of Commercial Operation, as such term is defined in the Power
Purchase and Interconnection Agreement. 

                                      -3-
<PAGE>
 
       1.10     [*]

       1.11     "Construction Drawdown Date" shall mean the date construction 
                 --------------------------
loan proceeds are released under the Loan Agreement sufficient to undertake the
completion of the Facility, as specifically defined in the Loan Agreement.

       1.12     "Contract Quantity" shall mean twenty-seven thousand, five 
                 -----------------
hundred (27,500) Dekatherms per Day of Natural Gas, as such quantity is 
projected in the Fuel Profile attached hereto as Exhibit D, except as adjusted 
in paragraph 3.13 hereof.

       1.13     "Date of Commercial Operation" shall mean the date       
                 ----------------------------
the Parties hereto designate by mutual agreement not to be unreasonably withheld
as the date on which all electric generation units at the Cogeneration Facility
have been completed, satisfactorily tested and inspected and are available for
and capable of: (i) production of electrical capacity and energy; and (ii) the
delivery thereof to PSE&G, as 

                                      -4-
<PAGE>
 
such term is defined in the Power Purchase and Interconnection Agreement.

        1.14 "Date Of Initial Operation" shall mean the date on which Seller
              -------------------------
synchronizes, for the first time, any electric generation unit at the
Cogeneration Facility with the PSE&G, as such term is defined in the Power
Purchase and Interconnection Agreement.

        1.15 "Day" shall mean a period of consecutive hours beginning 
              ---
8:00 a.m. (Eastern time) and ending at 8:00 a.m. the following calendar day.

        1.16 "Dekatherm" or "Dth" shall mean ten (10) therms of heating 
              ---------      ---
value.

        1.17 "Delivery Point(s)" shall mean the point or points of
              -----------------
interconnection between the outlet of Seller's meter and the Cogeneration
Facility.

        1.18 "Extended Gas Service" shall mean the interruptible Gas service in
              --------------------
addition to the Resale Service and any Testing Service rendered by Seller to
Buyer during a Peak Period.

        1.19 "FERC" shall mean the Federal Energy Regulatory Commission or
              ----
successor agency.

        1.20 "Financier" shall mean any individual(s) or entity(ies) and any
              ---------
representative(s) or trustee(s) for any such individual(s) or entity(ies): (i)
lending money to Buyer for: (a) the construction or term financing of the
Cogeneration Facility; (b) the establishment and/or maintenance of working
capital requirements; and/or (c) the refinance or

                                      -5-
<PAGE>
 
take-out of any such loan(s); and/or (ii) participating as an equity investor in
the Project; and/or (iii) any lessor under a lease finance arrangement.

     1.21 "Gas" or "Natural Gas" shall mean gas of a quality acceptable for
           ---      -----------
delivery into the systems of Transporter(s) or Seller, as applicable, or other
gases acceptable for normal use in Buyer's Facility.

     1.22 "Gas Tariff" shall mean any tariff of Seller or Transporter(s) setting
          -----------
forth the terms and conditions for sales or transportation services which is
filed with a Governmental Authority.

     1.23 "Governmental Authority" shall mean any federal, state or local
           ----------------------
governmental entity exercising jurisdiction over rates, services, operations
and/or facilities subject to this Agreement.

     1.24 "Initial Operation" shall mean the production of electric power after 
           ----------------- 
the Date of Initial Operation and prior to the Date of Commercial Operation by 
any electric generation unit(s) at the Cogeneration Facility and the supply of 
such electric power to PSE&G.

     1.25 "Interruptible Days" shall mean interruptions during Peak Periods, 
           ------------------
[*].


     1.26 "Loan Agreement" shall mean any agreement between Buyer and one or
           -------------- 
more Financiers pursuant to which Buyer 

                                      -6-
<PAGE>
 
arranges for and obtains debt financing to construct and/or operate the
Cogeneration Facility.

     1.27 "MW" or "Megawatts" shall mean one thousand kilowatts of electricity.
           --      ---------    

     1.28 "Month" shall mean the calendar month commencing at 8:00 a.m. Eastern 
           ----- 
Time on the first day of the calendar month and concluding at 8:00 a.m. Eastern
Time on the first Day of the following calendar Month.

     1.29 "Paperboard"  shall mean Camden Paperboard Corporation.
           ----------

     1.30 "Peak Period" shall mean any Day if the U.S. Weather Bureau has
           -----------
forecasted that the average temperature at Newark International Airport for such
Day will be [*] degrees Fahrenheit or less.

     1.31 "Power Purchase And Interconnection Agreement" shall mean the contract
           --------------------------------------------
dated April 15, 1988, as amended on June 12, 1990 and August 20, 1990, between
Buyer and PSE&G, covering the sale of electricity from the Facility, and any
amendments thereto that may be made from time to time.

     1.32 "PSE&G" shall mean Public Service Electric and Gas Company.
           ----- 

     1.33 "Rate Schedule CIG" means PSE&G's gas Rate Schedule CIG (Cogeneration 
           ----------------- 
Interruptible Service) on file with the BPU, as such rate schedule may be 
amended from time to time, which sets the price for PSE&G's gas sales to 
cogeneration customers.

                                      -7-
<PAGE>
 
     1.34 "Receipt Point(s)" shall mean the points on the pipeline system(s) of 
           ---------------- 
Transporter(s) at which Buyer delivers Gas to Seller in connection with the
Resale Service. The initial Receipt Point(s), when determined by the mutual
agreement of the parties, shall be set forth in Exhibit "E" hereto and may be
changed by mutual agreement in the future. Neither Buyer's nor Seller's
agreement shall be unreasonably withheld or delayed.

     1.35 "Requested Service Date" shall mean the Day that Buyer is obligated to
           ----------------------
begin accepting and Seller is obligated to begin rendering the Resale Service 
hereunder, as set forth in paragraph 3.6 hereof.

     1.36 "Resale Service" shall mean the service provided by Seller to Buyer
           -------------- 
whereunder Seller purchases Gas from Buyer at the Receipt Point(s) and resells
an equal quantity, less Shrinkage, to Buyer at the Delivery Point. The Resale
Service volume shall be twenty-seven thousand, five hundred (27,500) Dekatherms
per Day, at the Delivery Point, after allowance for Shrinkage, as provided 
herein. 

     1.37 "Shrinkage" shall mean any Natural Gas retained by Transporter(s) for 
           ---------
fuel or line loss, based upon the weighted average shrinkage for Seller's system
supply, in connection with the transportation of Natural Gas on behalf of
Seller.
       
     1.38 "Seller" shall mean PSE&G. 
           ------ 

     1.39 "Testing Service" shall mean the service provided by Seller to Buyer 
           ---------------
whereunder Seller sells Buyer Natural Gas on an

                                      -8-
<PAGE>
 
interruptible basis from its system supply at the Delivery Point during the
period prior to the Requested Service Date.

      1.40 "Transporter(s)" shall mean the interstate pipeline companies 
            -------------- 
originating in the production areas of Texas, Louisiana, the Gulf of Mexico and 
the Gulf coast, that sell to and/or transport Natural Gas on behalf of Seller.

      1.41 "Transportation Agreement(s)" shall mean any agreements under which 
            --------------------------- 
Transporter(s) transport and/or sell and transport Natural Gas on behalf of 
Seller from the Gulf coast area to New Jersey.

      1.42  [*]

      1.43 [*] 

                                      -9-
<PAGE>
 
[*]


        1.44 "Winter Season" shall mean each period from November 1
              ------------- 
through March 31 during the term of this Agreement.



                                   ARTICLE 2

                                  COMMITMENTS
                                  -----------

        2.1 Buyer's Commitments. Pursuant to the terms and conditions of this 
            -------------------
Agreement, in order to satisfy the fuel requirements of the Facility, Buyer 
commits:                               

            (a) to contract for a year-round supply of Natural Gas equal to the
            Contract Quantity, plus Shrinkage, which supply will be firm for the
            months of December through March, and to utilize the firm
            transportation capacity arranged by Seller on Transporter(s)'
            systems;

            (b) to contract for such firm Gas supply by June 1 preceding each 
            December through March period and to promptly furnish copies of such
            contracts to Seller;

            (c) to purchase Natural Gas from Seller pursuant to the Resale 
            Service and Testing Service described in Article 3 hereof;

            (d) to act with due diligence and use reasonable efforts to obtain 
            all necessary permits and regulatory approvals required to utilize 
            the services provided herein and to cooperate with Seller in seeking
            such approvals and permits.

        2.2 Seller's Commitments. Pursuant to the terms and conditions of this 
            --------------------
Agreement, in order to satisfy the fuel requirements of the Facility, Seller 
commits:

                                      -10-
<PAGE>
 
                  (a) to render the Testing Service, Resale Service and Extended
                  Gas Service described in Article 3;

                  (b) to increase Seller's firm transportation capacity on
                  Transporter(s)' systems for a period of at least fifteen (15)
                  years, in order to have available sufficient transportation
                  capacity on Transporter(s)' systems to render the services to
                  be provided hereunder by the Requested Service Date, to
                  utilize reasonable efforts to maintain sufficient capacity for
                  the remaining term of this Agreement to render the services
                  hereunder and to notify Buyer within fifteen (15) Days of the
                  termination of any long-term firm Transportation Agreements
                  with Transporter(s) covering volumes of at least twenty-five
                  thousand (25,000) Dekatherms per Day;

                  (c) following the Construction Drawdown Date, to construct
                  certain pipeline and related facilities necessary to furnish
                  the services to be provided hereunder, as provided in Article
                  10; and

                  (d) to petition for BPU approval of the services to be
                  rendered by Seller hereunder and to act with due diligence,
                  use reasonable efforts and cooperate with Buyer and
                  Transporter(s) in seeking approvals from other Governmental
                  Authority.


                                    ARTICLE 3

                                    SERVICES
                                    --------

        3.1 Testing Service. Prior to the Requested Service Date, if requested
            ---------------
by Buyer, Seller shall make reasonable efforts to sell up to the Contract
Quantity Testing Service Gas to Buyer from its system supplies on Days other
than during a Peak Period. Seller, in its sole discretion, may provide Extended
Gas Service for the testing of the Facility during a

                                      -11-
<PAGE>
 
Peak Period, if requested by Buyer. If adequate service is not provided by
Seller for the testing of the Facility, Buyer may purchase Gas from
third-parties for such testing and Seller shall make reasonable efforts to have
such Gas transported through Transporter(s) and to deliver the same to the
Facility providing doing so does not materially adversely affect Seller or
Seller's other customers or Buyer shall have the right to use Alternate Fuel
purchased under paragraph 3.4 for the testing of the Facility.

        3.2 Resale Service. Subject to the provisions hereof, on and after the
            --------------
Requested Service Date, Seller shall purchase the Natural Gas acquired by Buyer
from third-parties in a volume equal to the Contract Quantity, plus Shrinkage,
at the Receipt Point(s), which supply will be firm for the months of December
through March, and shall resell the same quantity, less Shrinkage, of Natural
Gas to Buyer at the Delivery Point. Seller shall provide Resale Service on a
continuous, year-round basis, [*]. Seller shall not be obligated during any Day
to purchase Gas from Buyer at the Receipt Point(s) in quantities in excess of
those purchased by Buyer at the Delivery Point up to the Contract Quantity
adjusted for Shrinkage, or to deliver to Buyer at the Delivery Point quantities
in excess of those sold to Seller at the Receipt Point(s), up to the Contract
Quantity adjusted for Shrinkage.

                                      -12-
<PAGE>
 
     3.3 Extended Gas Service. Seller, in its sole discretion, may provide 
         ---------------------
Extended Gas Service to Buyer during a Peak Period, in addition to any Resale
Service provided hereunder, or for testing of the Cogeneration Facility, if such
service is requested by Buyer.

     3.4 Alternate Fuel Use. In accordance with the other provisions of this  
         ------------------
Agreement, Buyer shall have the right to use Alternate Fuel supplies for testing
of the Cogeneration Facility, when that Seller is unable to provide Testing
Service, and during Peak Periods, when the Resale Service is interrupted by
Seller hereunder; provided, however, Buyer shall have the right to use Alternate
Fuel at its discretion for the testing of the Alternate Fuel supply system.
Unless otherwise agreed, Buyer shall also have the right to use any inventory of
Alternate Fuel supplies, up to twenty-two thousand (22,000) barrels in lieu of
Resale Service Gas, which are on hand as of April 1 of each Annual Period,
provided that Buyer's rights to use such inventory shall be limited to twenty-
five (25) Days per Annual Period.

     3.5 Service Conditions. Seller's commitment to provide uninterrupted Resale
         ------------------
Service hereunder, [*], or as otherwise provided in this Agreement, is
contingent upon Buyer's providing an uninterrupted Gas supply equal to the
Contract Quantity. In addition to any other remedy Seller may have under this
Agreement, failure by Buyer to provide all or part of the Resale Service supply
(subject to the tolerance set

                                      -13-
<PAGE>
 
forth in paragraph 5.3) for any reason, including force majeure, shall
proportionately reduce Seller's commitment to provide the otherwise
uninterruptible Resale Service by the amount of any such failure.

     3.6 Commencement of Service. Buyer anticipates that the date for the
         -----------------------
commencement of Testing Service shall be February 1, 1993, and that the
Requested Service Date for Resale Service shall be November 1, 1993. On or
before January 1, 1992, Buyer shall have the right to change the date of the
commencement of Testing Service and/or the Requested Service Date by giving
Seller written notice thereof, which change shall not vary from the dates set
forth in this section 3.6 by more than sixty (60) Days. If Buyer fails to give
Seller written notice of any change of such dates by January 1, 1992, the above-
referenced dates will remain in effect. The date of commencement of Testing
Service and/or the Requested Service Date may be changed by mutual agreement of
the parties.

     3.7 Failure To Commence Service. If Buyer is prepared to accept, but Seller
         ---------------------------
is unable to provide, the Resale Service hereunder on the Requested Service
Date, Seller shall have no liability to Buyer providing Seller has used due
diligence to have such service available, and Seller shall continue to make all
reasonable efforts to place itself in a position to provide the service
contemplated hereunder. Under such circumstances, during the months of April
through October, Seller shall nevertheless provide and cause Transporter(s) to
provide firm transportation for the Resale Service. Under such

                                      -14-
<PAGE>
 
circumstances, during the months of November through March, Seller shall make
reasonable efforts to provide and cause Transporter(s) to provide firm
transportation for as much of the Resale Service volumes as possible and shall
arrange for the interruptible transportation of any balance of the Resale
Service volumes on Transporter(s)' systems until sufficient firm transportation
capacity is acquired to transport the Resale Service quantity. If Seller has not
acquired sufficient firm transportation capacity on Transporter(s)' systems to
render the Resale Service hereunder following the later of the Requested Service
Date or the Date of Initial Operation or, after acquiring such firm capacity, if
Seller does not retain the same during the term of this Agreement, Buyer may
contract with third-parties to purchase fuel supplies and firm transportation
capacity for the Cogeneration Facility to supplement any service provided by
Seller hereunder. Buyer may continue such purchases until sixty (60) Days
following Buyer's receipt of Seller's written notice that it can provide the
required services hereunder.

     3.8 Failure To Accept Services. If Seller is prepared to provide the Resale
         --------------------------
Service hereunder on and after the Requested Service Date and Buyer, for reasons
other than those caused by Seller, is unable to utilize the Resale Service Gas
for the Cogeneration Facility, Buyer shall reimburse Seller monthly for its [*]
allocable to the Contract Quantity during the [*] following the Requested
Service Date, until the

                                      -15-
<PAGE>
 
first Day of the Month following Buyers written notification to Seller that
Buyer is prepared to receive such gas; provided, however, Buyer shall have no
obligation to reimburse Seller for any [*] incurred by Seller during the Months
of November through March, to the extent any such Month falls during said [*]
period. If Seller remains prepared to provide the Resale Service hereunder, but
Buyer is unable to receive the Resale Service Gas at the Cogeneration Facility
for reasons other than those caused by Seller, after the [*] following the
Requested Service Date, Buyer shall reimburse Seller monthly for its [*]
allocable to the Contract Quantity until Buyer is prepared to receive the Resale
Service Gas during the period commencing the [*], and [*], following the
Requested Service Date. If Buyer remains unable to accept Resale Service
hereunder following [*] after the Requested Service Date, Seller shall have the
right to terminate this Agreement upon thirty (30) Days prior written notice
unless Buyer continues to pay Seller on a monthly basis Seller's [*] allocable
to the Contract Quantity.

     3.9 Letters of Credit for WATDC Obligation. Within five (5) Days of the 
         --------------------------------------
Construction Drawdown Date, Buyer shall provide Seller an irrevocable letter of
credit in the amount of [*], as security for Buyer's potential obligation to
reimburse Seller's [*] under

                                      -16-
<PAGE>
 
paragraph 3.8, providing Seller has furnished to Buyer on or before such date a
written representation that Seller has entered into contracts to acquire
additional firm transportation capacity on Transporter(s)' systems which, when
in service together with other transportation capacity available to Seller, will
be sufficient to render the Resale Service to be provided hereunder. A copy of
Seller's written representation is attached hereto and made a part hereof as
Letter No. 1 in Exhibit "H". If Seller has not furnished Buyer such written
representation by the Construction Drawdown Date, Buyer's obligation to provide
the letter of credit shall be suspended until five (5) Days following Buyer's
receipt of Seller's written representation.

     Within five (5) Days of Buyer's receipt of Seller's written representation
that the FERC has approved Transporter(s)' application(s) to furnish Seller
additional firm transportation capacity on their systems which, when in service
together with other transportation capacity available to Seller, will be
sufficient to permit Seller to render firm delivery service for the Contract
Quantity hereunder in accordance with the terms of this Agreement, Buyer shall
provide Seller an additional irrevocable letter of credit in the amount of [*],
as further security for Buyer's potential [*] reimbursement obligation. A copy
of Seller's written

                                      -17-
<PAGE>
 
representation is attached hereto and made a part hereof as Letter No. 2 in
Exhibit "H".

     Within five (5) Days of Buyer's receipt of Seller's written representation
that it is prepared to render Buyer firm transportation service of the Contract
Quantity on a year-round basis in accordance with the terms of this Agreement,
Buyer shall provide Seller an additional irrevocable letter of credit in the
amount of [*], as final security for Buyer's potential [*] reimbursement
obligation. Upon the receipt of such letter of credit, Seller shall have the
obligation to provide firm transportation of the Contract Quantity on the later
of the Requested Service Date or the date such letter of credit is furnished, as
provided in this Agreement. A copy of Seller's written representation is
attached hereto and made a part hereof as Letter No. 3 in Exhibit "H".

     The conditions imposed for Buyer's posting of the [*] letter of credit must
be satisfied before Buyer is required to furnish the other letters of credit
hereunder. Likewise, the conditions imposed for Buyer's posting of the [*]
letter of credit must be satisfied before Buyer is required to furnish the last
letter of credit hereunder.

     If Buyer fails to reimburse Seller monthly for the [*] in accordance with
paragraph 3.8, Seller may draw upon

                                      -18-
<PAGE>
 
the letter(s) of credit for the amounts due but not paid. Buyer shall have no
obligation to maintain any balance under the letter(s) of credit thirty (30)
Days after the Date of Commercial Operation of the Facility. Prior to the Date
of Commercial Operation of the Facility, Buyer shall have no obligation to
reimburse Sellers for any [*] other than the amounts specified in paragraph
3.8 hereof.

     3.10 Delayed Commencement of Service. If Buyer is unable to accept, but 
          -------------------------------
Seller is prepared to provide, the services hereunder on or after the Requested 
Service Date, Seller shall not be obligated to commence Resale Service hereunder
until sixty (60) Days following Seller's receipt of written notice from Buyer of
the new date on which Buyer requests Seller to commence Resale Service
hereunder. In such event, Seller shall use reasonable efforts to commence
service as soon as possible after the receipt of such notice.

     3.11 Nominations. Whenever reasonably requested by Seller, Buyer shall 
          ------------
provide Seller with its best forecast of the Gas requirements for Resale
Service. At least twenty-four (24) hours in advance of each Day, Buyer shall
give Seller notice of its best estimate of the quantities of Resale Service Gas
that Buyer will require for the next Day to enable Seller to comply with the
scheduling provisions of Transporter(s). Seller shall not be obligated, but
shall use reasonable efforts to provide, volumes in excess of those specified in
such notification by Buyer. Buyer shall receive and Seller shall

                                      -19-
<PAGE>
 
deliver at the Delivery Point the nominated quantities as nearly as possible at
uniform hourly rates. Provided that a reduction in nominated quantities is
covered by a reduction of power purchased by Seller pursuant to Article II,
Section D of the Power Purchase And Interconnection Agreement, Buyer may reduce
the scheduled daily quantities hereunder during any Day, without regard to any
prior nomination, by notifying Seller, as far in advance as possible but in no
event less than two (2) hours in advance of any reduction in the nominated
quantities. Any such changes shall be kept to the minimum permitted by operating
conditions. Buyer's notices shall also include the expected duration of such
reduction.

     3.12 Interruptions. Notwithstanding anything to the contrary herein other 
          --------------
than the interruption limitation set forth in paragraph 3.2 hereof, upon eight 
(8) hours notice to Buyer, during any Peak Period, Seller may fully interrupt 
and may curtail the Resale Service. If Buyer uses quantities of Gas in excess of
the quantities authorized by Seller, if any, during periods of interruption or
curtailment in Peak Periods, Seller shall have the right to limit deliveries to
the authorized quantities and all such unauthorized overrun quantities shall be
subject to the penalty provided in PSE&G's Rate Schedule CIG or successor tariff
for Gas used during interruptions.

     3.13 Quantity Adjustments. Within twelve (12) Months after the Date of 
          --------------------
Commercial Operation, Buyer shall have the

                                     -20-
<PAGE>
 
right to adjust the Contract Quantity of Resale Service Gas to be purchased
hereunder to correspond with the anticipated fuel requirements of the
Cogeneration Facility needed to satisfy Buyer's obligations under the Power
Purchase and Interconnection Agreement, based upon performance, test or
demonstrated results from actual operations of the Cogeneration Facility during
such twelve (12) Month period. Such adjustments shall not exceed [*] Dekatherms
per Day. Every three (3) Annual Periods following the Date of Commercial
Operation, Buyer shall be entitled to adjust the Contract Quantities of Gas to
be purchased hereunder, to correspond with the anticipated fuel requirements of
the Cogeneration Facility, to reflect any anticipated changes in electric power
purchases by Seller under the Power Purchase and Interconnection Agreement. In
no event, however, shall any adjusted quantity be outside a range of plus or
minus [*] Dekatherms per day.

     3.14 Exclusivity. Except for the Alternate Fuel purchased pursuant to this 
          ------------
Agreement, Buyer agrees, unless mutually agreed to otherwise, that Natural Gas
transported and/or sold by Seller under this Agreement, including volumes
delivered pursuant to paragraph 3.1 hereof, shall be the sole source of fuel for
the Cogeneration Facility during the term of this Agreement; provided, however,
during periods of service interruption or curtailment by Seller hereunder or
during

                                     -21-
<PAGE>
 
periods when all of the required firm transportation capacity for Resale Service
is not available, Buyer may purchase and/or have transported Natural Gas or
other fuels from suppliers other than Seller to the extent needed by Buyer to
supplement the quantities of Gas available from Seller hereunder. During such
periods of fuel substitution, Seller will cooperate with Buyer to utilize
Seller's local distribution system on an economically appropriate and non-
discriminatory basis.

    3.15 Emergency Curtailments. Seller shall have the right to curtail
         -----------------------
deliveries hereunder in the event of an emergency on Transporter(s)' or Seller's
systems which affect service hereunder. Buyer shall be responsible for any
penalties assessed by Transporter(s) or other costs incurred by Seller due to
Buyer's refusal to reduce Natural Gas usage after notification of any such
emergency.

    3.16 [*]

                                     -22-
<PAGE>
 
[*]

                                   ARTICLE 4

                               RATES AND CHARGES
                               ------------------

    4.1 Testing Service. The price per Dekatherm payable by Buyer to Seller for
        ----------------
the delivery of any Gas for the testing of the Facility prior to the Requested
Service Date shall be equal to [*]. If Seller does not have sufficient
transportation capacity and/or Gas supplies to render service for the testing of
the Facility and Buyer purchases Gas from a third-party for that purpose, the
price per Dekatherm payable

                                     -23-
<PAGE>
 
by Buyer to Seller for the delivery of such third-party Gas shall be equal to
the sum of:

                   [*]

                   [*]

     4.2 Resale Service. The price per Dekatherm payable by Buyer for the Resale
         --------------
Service in any Month shall be equal to the sum of:

                   [*]

                   [*]

                   [*]

     4.3 Extended Gas Service. The price payable by Buyer per Dekatherm for the
         ---------------------
Extended Gas Service in excess of the Resale Service shall be equal to the sum
of: 
               
                   [*]     

                                     -24-
<PAGE>
 
                   [*]

                   [*]

                                   ARTICLE 5

                             DELIVERY AND RECEIPT
                             --------------------

     5.1 Receipt Point(s). The Natural Gas to be received by Seller from Buyer 
         ----------------
in connection with the Resale Service hereunder shall be delivered at the 
Receipt Point(s).

     5.2 Delivery Point. The Natural Gas to be sold by Seller to Buyer in 
         -------------
connection with the Testing Service, Resale Service and Extended Gas Service 
hereunder shall be delivered at the Delivery Point. 

     5.3 Balancing. The quantity of Natural Gas, less Shrinkage, delivered or 
         ----------
caused to be delivered by Buyer to Seller at the Receipt Point(s) in connection 
with the Resale Service hereunder on any Day shall be redelivered by Seller to 
Buyer at the Delivery Point, balanced on a heat-content basis. Any monthly 
imbalance between Buyer's deliveries at the Receipt Point(s) and Buyer's actual 
usage of Natural Gas in connection 

                                     -25-
<PAGE>
 
with the Resale Service shall be kept to a minimum and, in any event, shall not
exceed [*] of Buyer's actual usage of Resale Service Gas
hereunder.

       In the event an imbalance between monthly receipts and deliveries exists
hereunder, Buyer and Seller shall immediately take whatever action is required
to eliminate such imbalance within thirty (30) Days after receipt of written
notification of the same. If Buyer's monthly usage of Resale Service Gas at the
Facility varies from Buyer's monthly deliveries of Gas at the Receipt Point(s)
by more than [*] during the period December through March, for any
such variation above [*] Buyer shall be subject to a penalty equal
to the [*] multiplied by such variation. If Buyer's monthly usage of Resale
Service Gas at the Facility varies from Buyer's monthly deliveries of Gas at the
Receipt Point(s) by more than [*] during the period April through
November, for any such variation above [*] Buyer shall be subject to a penalty
of [*] per Dekatherm, as adjusted by changes in Seller's Base Rates as set forth
below.

       Buyer shall be responsible on a daily basis for assuring that its
suppliers deliver to Transporter(s) at the Receipt Point(s) the quantity of
Resale Service Gas scheduled by Buyer in its nomination to Seller. Imbalances on
a daily basis between the nominated Resale Service quantities and the quantities
actually used, in excess of [*] of the

                                     -26-
<PAGE>
 
nominated quantity, shall be subject to a penalty of [*] per Dekatherm. This [*]
penalty shall be adjusted after the first Annual Period or December 31, 1992,
whichever first occurs, with any percentage change in Seller's Base Rates,
relative to the Base Rates which were in effect during the first Annual Period
or 1992, as appropriate.

         Buyer shall be obligated to pay the higher of the monthly or daily
penalties assessed by Seller, if any, but shall not be obligated to pay both
penalties. Furthermore, if any imbalance related to Buyer's operations under the
Resale Service hereunder results in any penalties being applied to Seller by
Transporter(s), Seller may elect to make Buyer responsible for such penalties in
lieu of the penalties for imbalances provided in this paragraph 5.3 related to
any such penalty by Transporter(s).



                                   ARTICLE 6

                   POSSESSION, TITLE, WARRANTY AND LIABILITY
                   -----------------------------------------

     6.1 Transfer at Receipt Point(s). Title to Gas sold by Buyer to Seller in 
         ----------------------------
connection with the Resale Service hereunder will pass from Buyer to Seller at 
the Receipt Point(s), unless Buyer and Seller mutually agree to transfer title
at another point. Until the Gas reaches the Receipt Point(s), Buyer will be 
deemed to be in exclusive control and possession of, and fully responsible for, 
such Gas. After the Gas has reached the Receipt Point(s), Seller will be deemed 
to be in exclusive 

                                      -27-
<PAGE>
 
control and possession, and fully responsible for, such Gas until it reaches the
Delivery Point.

     6.2 Transfer at Delivery Point. Title to Gas sold by Seller to Buyer in 
         --------------------------
connection with the Resale Service will pass from Seller to Buyer at the 
Delivery Point, unless Buyer and Seller mutually agree to transfer
title at another point. Until the Gas reaches the Delivery Point, Seller will be
deemed to be in exclusive control and possession of, and fully responsible for,
such Gas. After the Gas has reached the Delivery Point, Buyer will be deemed to
be in exclusive control and possession of, and fully responsible for, such Gas.

     6.3 Title. Buyer, as to all Gas delivered by it to Seller, and Seller, as 
         -----
to all Gas delivered by it to Buyer, warrant for themselves, their successors
and assigns, that each will at the time of delivery to the other party, have
good and merchantable title to all such Gas and the good right to deliver such
Gas free and clear of all liens, encumbrances and claims whatsoever, with the
exception of the security interest, if any, in Buyer's Gas held by Financier or
any successors-in-interest. Each party will indemnify the other, defend and save
it harmless from all suits, actions, debts, accounts, damages, costs, losses and
expenses arising from or out of adverse claims to such Gas by any third party or
parties, including claims by any third party or parties for any royalties,
taxes, license fees or charges applicable to such Gas or to the delivery
thereof.

                                      -28-
<PAGE>
 
        6.4 Insurance. Seller shall maintain liability coverage and/or insurance
            ---------
on its facilities utilized and activities performed in connection with this
Agreement, sufficient to cover the cost of injury sustained by Buyer and caused
by Seller. Buyer shall maintain liability insurance on its facilities utilized
and activities performed in connection with this Agreement, sufficient to cover
the cost of injury sustained by Seller and caused by Buyer.


                                   ARTICLE 7

                                     TERM
                                     ----

        7.1 Base Term. The term of this Agreement shall be twenty (20) Annual
            ---------
Periods (herein referred to as "Base Term").

        7.2 Extended Term. At the end of the Base Term, the Resale Service shall
            -------------
be renewed for two (2) successive five (5) Annual Periods, subject to mutual
agreement of the parties. Such mutual renewal of the Base Term or the first
five-Annual Period renewal term shall be valid only if Seller or Buyer provides
written notice of its intent to renew to the other party at least three (3) full
Annual Periods prior to the expiration of the then-pending term.

        7.3 Termination. This Gas Service Agreement shall be subject to
            -----------
termination by either party upon thirty (30) Days prior written notice if for
any reason, including force

                                      -29-
<PAGE>
 
majeure, Commercial Operation of the Facility does not commence by June 1, 1994.
        
        7.4 Termination of Obligations. At the expiration of the initial term or
            --------------------------
a renewal term, if applicable, this Agreement and each party's obligation(s)
hereunder shall automatically terminate as of the effective date thereof;
provided, however, expiration of this Agreement shall not relieve either party
from any obligation arising under this Agreement to pay any monies due to the
other party which monetary obligation was incurred prior to the date of
expiration of this Agreement.


                                    ARTICLE 8

                             ACCOUNTING AND PAYMENT
                             ----------------------

        8.1 Payment. By the fifteenth (15th) Day of each Month, Buyer will
            -------
calculate all sums payable to it by Seller for deliveries at the Receipt
Point(s) under this Agreement during the preceding Month and will deliver its
invoice to Seller showing thereon full billing details. By the fifteenth (15th)
Day of the Month, Seller will calculate all sums payable to it by Buyer for
services at the Delivery Point during the same period and will deliver its
invoice to Buyer showing thereon full billing details. If Buyer's invoice amount
to Seller exceeds Seller's invoice amount to Buyer, the difference will be due
and payable to Buyer by Seller by the last Day of the Month. If Seller's invoice
to Buyer exceeds Buyer's invoice to Seller, the difference will be deducted from
the amount payable

                                      -30-
<PAGE>
 
by Seller to Buyer under the Power Purchase and Interconnection Agreement;
provided, however, to the extent any such difference payable to Seller exceeds
the amount payable to Buyer under the Power Purchase and Interconnection
Agreement, said excess shall be payable to Seller by Buyer by the last Day of
the Month. If Buyer or Seller fails to render either invoice by the due date for
such invoice, the relevant due date of the payment by the party receiving such
late notice shall be extended by a corresponding number of Days.

        If an index, rate, publication or other source of information required
for the adjustment of any price, charge or credit under this Agreement is
unavailable on the effective date for such adjustment, Seller's or Buyer's
invoice will be calculated using the best available estimate of such adjustment.
When the information necessary for calculation of the actual adjustment becomes
available, such invoice will be recalculated and any net charge or credit
resulting from the recalculation will be reflected on the next month's invoice.
If the current pricing structure applicable to the sale and transportation of
Gas in interstate commerce upon which the pricing determinations for [*]
materially change, the parties agree to modify the method of calculating such
pricing determinations in a

                                      -31-
<PAGE>
 
manner which will place the parties in the same position as existed prior to the
change.

        8.2 Mode of Payment. Each payment under this Agreement will be made by
            ---------------
interbank wire transfer to the bank address designated in writing by Seller or
Buyer or to such other address as Seller or Buyer may from time to time
designate by written notice.

        8.3 Auditing. Each party will have the right at reasonable hours to
            --------
examine the books, records, and charts of the other party to the extent
reasonably necessary to verify the accuracy of any invoice, payment,
measurement, calculation, or determination made pursuant to the provisions of
this Agreement; provided, that if any such examination requires access to
confidential information, the release of which would be harmful to Seller's or
Buyer's competitive position, Buyer or Seller, as the case may be, will select
an examiner who is not in a position to benefit from such confidential
information and such examiner will execute an agreement to maintain the
confidentiality of the information to be examined. If any such examination
reveals, or if either party discovers, any error or inaccuracy in its own or the
other party's invoice, calculation, measurement or determination, then proper
adjustment and correction thereof will be made as promptly as practicable
thereafter, except that no adjustment or correction will be made if more than
one year has elapsed since the error or inaccuracy occurred.

                                      -32-
<PAGE>
 
        8.4 Failure to Pay. If either party fails to pay any amount payable to
            --------------
the other hereunder when due, interest thereon will accrue and be payable from
the date on which payment was due until the date payment is made. The rate of
such interest will be the Prime Rate published weekdays in the Wall Street
Journal, plus two percent (2%), provided that the interest rate provided herein
may never exceed the highest rate of interest permitted by applicable law. If
any such failure to pay continues for ten (10) Days after receipt of written
protest by the party to whom such amount is due, such party may suspend its
performance under this Agreement and, in addition, if such failure to pay
continues for thirty (30) Days, such party may terminate this Agreement upon
written notice to the other party; provided, however, that if either party in
good faith disputes the amount of any such bill or any part thereof, and pays to
the other party such amount as it concedes to be correct, and at any time
thereafter within ten (10) Days of a demand by the billing party, furnishes good
and sufficient surety bond of Financier or other security acceptable to the
other party, guaranteeing payment to the billing party of the amount in dispute,
then the billing party will not be able to suspend performance under this
Agreement or seek to terminate this Agreement. The exercise of any such right
will be in addition to any and all remedies otherwise available to such party.

                                      -33-
<PAGE>
 
     8.5   Overpayment.  If either party pays any amount shown due and owing
           -----------
upon the invoice of the other party, and such amount is subsequently determined
by agreement, arbitration or judgment of court not to have been due and owing
when paid, the payee will refund such amount to the paying party together with
interest from the date of payment to the date of refund at a rate equal to the
Prime Rate published weekdays in the Wall Street Journal in existence as of the
date of determination that such refund is due, provided that the interest rate
provided herein may never exceed the highest rate of interest permitted by
applicable law.


                                   ARTICLE 9

                      MEASUREMENT AND DELIVERY CONDITIONS
                      -----------------------------------

     9.1   Metering.  The parties recognize that the Receipt Point(s) are
           --------
operated under the control of Transporter(s) and that Gas delivered hereunder
shall be measured by the operation of the facilities at the Receipt Point(s) in
accordance with the Transportation Agreement(s). The measurement and tests to
determine the quality and other characteristics of the Natural Gas shall be
performed by the operator of the facilities at the Receipt Point(s) in
accordance with Transporter(s)' FERC Gas Tariff(s).

           Seller and/or Transporter will have installed and maintain at its own
expense such measuring equipment, including

                                      -34-
<PAGE>
 
a meter of suitable accuracy of a type customarily used in the industry as is
required, to record the quantities and heating content of Gas sold and/or
delivered at the Delivery Point hereunder. Seller and/or Transporter will be
responsible for maintaining the accuracy of such measuring equipment and will
test such equipment at reasonable intervals, or as requested by Buyer, but no
more frequently than once in any sixty (60) Day period, or as permitted by
Transporter. Buyer may have its representatives present at the test of such
equipment. Seller will follow the standards of the BPU and/or Transporter's
tariff, as applicable, with regard to the testing and accuracy of measuring
equipment. Buyer may maintain at its own expense check measuring equipment;
provided, however, Seller's measuring equipment shall be used for all
determinations of quantities delivered hereunder.

     9.2   Pressure.  Natural Gas delivered to Seller at the Receipt Point(s) 
           --------
hereunder shall be at a pressure sufficient to enter Transporter(s) facilities 
and shall meet Transporter(s) terms and conditions for pressure (including the  
maximum allowable operating pressure at each Receipt Point). Natural Gas 
delivered by Seller to Buyer at the Delivery Point shall be at Seller's system 
operating pressure, which shall be no lower than the lesser of twenty (20) psig 
less than Transcontinental Gas Pipeline Company's system operating pressure or 
350 psig. 

                                      -35-
<PAGE>
 
     9.3   Heating Content.  The Dekatherm content of the Gas delivered
           ---------------
hereunder shall be determined separately for each Receipt Point, each month by
Transporter(s) or the operator of such facility in accordance with standard
testing methods specified in Transporter(s)' FERC Gas Tariff. The results of any
tests by Transporter(s) to determine Dekatherm content shall be corrected to
reflect actual conditions of delivery. In the absence of a mutually agreeable
alternative, the parties agree to rely upon the results of tests conducted by
the Transporter(s).

     9.4   Quality.  Natural Gas delivered to Seller at the Receipt Point(s) on 
           -------
Transporter(s)' pipeline systems shall meet the minimum quality specifications 
of Transporter(s) specified in the Transportation Agreement(s) and any 
applicable provisions of Transporter(s)' FERC Gas Tariffs.


                                  ARTICLE 10

                                  FACILITIES
                                  ----------

     10.1  Facilities Installation.  Seller and/or Transporter shall be required
           -----------------------
to construct certain facilities to provide the services contemplated hereunder
to the Cogeneration Facility. Such facilities shall include the construction of
new pipeline facilities from Transporter(s)' systems and upgrading of Seller's
existing pipeline facilities to the Delivery Point, in addition to necessary
metering and

                                      -36-
<PAGE>
 
regulating devices. The cost of those facilities is estimated to be [*]. It is
estimated that Seller's cost of initial engineering and permits of the subject
facilities shall be [*], of which [*] is on deposit with Seller. Buyer shall
advance to Seller the balance of [*] within thirty (30) Days of Buyer's receipt
of Seller's prior written notice that it is prepared to commence the initial
engineering and permits. This [*] is non-refundable by Seller to Buyer. Upon
thirty (30) Days prior written notice of Seller's intent to commit to spend any
significant sums for the additional permitting and construction of the subject
facilities, Buyer agrees to provide as security an irrevocable letter of credit
payable to Seller for the approximate amount of such estimates. Buyer shall not
be required to provide the additional letters of credit prior to the
Construction Drawdown Date. It is agreed and understood, however, that Seller
shall not be required to proceed with such activities unless and until the
additional letter of credit is provided by Buyer. This obligation and the
letters of credit will be reduced by [*] for every Dekatherm of Gas that Seller
delivers to the Facility. If by the earlier of November 1, 1996, the end of the
first three (3) Annual Periods or at such time that Buyer is no long

                                      -37-
<PAGE>
 
proceeding with due diligence toward the Commercial Operation of the
Cogeneration Facility, any balance remains under the letters of credit, Buyer
will pay Seller such balance within ten (10) Days from receipt of a written
demand for such payment or, absent payment by this date, Seller may draw upon
the letters of credit for the same, but only up to the amount of expenses
incurred or committed to by Seller for such facilities, less any reductions
provided for herein.

                                   ARTICLE 11

                                 FORCE MAJEURE
                                 -------------

     11.1  Definition and Illustrations.  The term "force majeure" means an
           ----------------------------
event (i) that was not within the reasonable control of the party claiming its
occurrence; (ii) that could not have been prevented or avoided by such party
through the exercise of due diligence and reasonable care; and (iii) that
materially impairs the ability of such party to perform its obligations under
this Agreement. Events that may give rise to a claim of force majeure include,
but are not limited to:

           (a) Acts of God, earthquakes, epidemics, fires, floods, hurricanes,
           landslides, lightning, storms, washouts, freezing of wells or lines
           of pipe;

           (b) Acts of the public enemy, wars, blockage, insurrections, riots,
           civil disturbances and arrests;

           (c) Strikes, lockouts or other industrial disturbances;

                                      -38-
<PAGE>
 
     (d) Explosions, breakage, accidents to machinery or lines of pipe;

     (e) Inability to obtain or unavoidable delay in obtaining necessary
     materials, equipment, easements, franchises or permits;

     (f) Failure, for reasons of force majeure, of any entity to deliver gas
     under firm contracts, or to transport Gas delivered or to be delivered
     under this Agreement;

     (g) The order of any court having jurisdiction while the same is in force
     and effect;

     (h) The imposition by a Governmental Authority of laws, conditions,
     limitations, rules or regulations that materially impair the ability of
     Buyer or Seller to perform its obligations under this Agreement, including,
     but not limited to, actions or inactions restricting the ability of Buyer
     or Seller to acquire Gas or obtain transportation of Gas;

     (i) The imposition by an operator of facilities (other than the facilities
     of Buyer or Seller), at any point at which Gas to be purchased and sold
     under this Agreement is received by or delivered to Buyer or Seller, of
     quality and pressure conditions that materially impair the ability of
     either Buyer or Seller to perform its obligations under this Agreement;

     (j) The occurrence of any event of "force majeure" under Article XVIII of
     the Power Purchase and Interconnection Agreement; and

     (k) Seller's or Buyer's inability to extend or reestablish firm
     transportation or supply agreements during the term of this Agreement
     sufficient to provide the services hereunder.

                                      -39-
<PAGE>
 
     11.2  Notice and Suspension. If an occurrence of force majeure renders 
           ---------------------
either party wholly or partially unable to carry out its obligations under this
Agreement, such party will promptly give the other party notice and full
particulars of the occurrence in writing or by telecopier or telegraph. The
obligations of both parties under this Agreement will be suspended to the extent
that they are affected by the occurrence. Such suspension will be effective only
during the continuance of the inability to perform caused by the force majeure
occurrence, and will not apply to the obligation to pay when due any charges
accrued prior to the event of force majeure under this Agreement, to Buyer's
obligation to reimburse Seller for any [*] applicable to the Resale Service for
force majeure occurrences of [*] or less duration, or to Buyer's obligations
under paragraphs 3.9, 3.10 and 10.1 hereof.

     11.3  Remedial Actions. A party claiming force majeure as grounds for
           ----------------
suspension of its performance under this Agreement shall proceed with due
diligence and with all reasonable dispatch to remedy the cause of its inability
to perform and to put itself in position to resume its obligations.

     11.4  Settlements of Disputes. The requirement of this Article that an
           -----------------------
inability to perform caused by an event of force majeure be remedied with all
reasonable dispatch does not obligate a party to settle a strike, lockout or
other

                                      -40-
<PAGE>
 
industrial dispute or disturbance by acceding to the demands of an opposing
party. Any such settlement will be entirely within the discretion of the party
having the difficulty.

     11.5  Termination Rights. If an occurrence of force majeure renders Buyer
           ------------------
unable to carry out its obligations hereunder and such inability continues for a
period of [*] following such occurrence, Seller shall have the right to
terminate this Agreement upon thirty (30) days prior written notice to Buyer and
Financier; provided, however, Seller shall not have the right to terminate this
Agreement until three (3) years following such occurrence, assuming Buyer's
inability to perform continues during that period, if Buyer pays Seller on a
monthly basis after such [*] period Seller's [*] allocable to the Contract
Quantity. If an occurrence of force majeure renders Seller unable to carry out
its obligations hereunder and such inability continues for a period of [*]
following such occurrence, Buyer shall have the right to terminate that portion
of the service that has been suspended by reason of the force majeure, upon
thirty (30) days prior written notice to Seller.

     11.6  Inapplicability to Letters of Credit. The provisions of this Article
           ------------------------------------
11 shall not apply to or in any way diminish Buyer's obligation to furnish, or
Seller's rights to draw upon, the letters of credit provided by Buyer under this
Agreement.

                                      -41-
<PAGE>
 
                                  ARTICLE 12

                            LIMITATION OF LIABILITY
                            -----------------------

     12.1  Liability.  Neither party nor its officers, directors, partners, 
           ---------
agents, servants, employees, affiliates, parent, subsidiaries or respective
successors or assigns shall be liable to the other party for claims for
punitive, incidental, special, indirect or consequential damages ("Damages")
whether such claim is based on a cause of action based in warranty, negligence,
strict liability, contract, operation of law or otherwise, except where such
Damages arise out of, relate to or result from the gross negligence of, or the
willful disregard by, a party of an obligation under this Agreement.

     12.2  Hold Harmless. Each party shall hold harmless the other party, its
           -------------
parent company, subsidiaries, affiliates, successors and assigns, as well as all
other corporations substantially all of whose stock is owned directly or
indirectly by the parties and each and every of its past, present or future
officers from and against any and all third-party loss, cost, or expense
(including reasonable attorney's fees) arising from any act or failure to act by
such party related to this Agreement.


                                  ARTICLE 13

                           DEFAULTS; RIGHT TO CURE 
                           -----------------------

     13.1  Defaults. Except as otherwise provided for herein, if either Buyer or
           --------
Seller shall fail to perform any obligations

                                      -42-
<PAGE>
 
imposed upon it under this Agreement (except where such failure shall be excused
under other provisions hereof), then in such event the party not in default may,
at its option (without waiving any other remedy for breach thereof), notify in
writing the party in default (and the Financier, if the defaulting party is
Buyer), stating specifically the nature of the default and declaring it to be
the intention of the party giving such notice to cancel the Agreement if the
default is not cured as hereinafter provided. The party in default shall have
thirty (30) Days after receipt of the aforesaid notice in which to remedy or
remove the cause or causes stated in the notice. If within said thirty (30)
Days, the party in default removes or remedies said cause or causes, or if such
default is of the nature that it would be unreasonable to effect a cure within
such thirty (30) Day period and the defaulting party has commenced and is
diligently pursuing such cure and fully indemnifies the party not in default,
subject to the provisions of paragraph 12.1, then this Agreement shall remain in
full force and effect.

     13.2  Termination. Except as otherwise provided herein, if the party in 
           -----------
default does not remedy and remove the cause or causes stated in such notice
within said thirty (30) Days, or does not indemnify the party not in default,
then this Agreement, at the option of the non-defaulting party, shall be
terminated and be of no further force or effect from and after the expiration of
said thirty (30) Day period.

                                      -43-
<PAGE>
 
          Any terminations of this Agreement pursuant to paragraph 13.2 shall be
without prejudice to the right of the party not in default to collect any
amounts then due it and without waiver of any other remedy to which the party
not in default may be entitled for breach of this Agreement.


                                  ARTICLE 14
                
                ACTIONS REQUIRED TO SATISFY CERTAIN CONDITIONS
                ----------------------------------------------

     14.1  General. Certain of the obligations of both parties set forth herein 
           -------
are subject to the approval or authorization of regulatory and/or governmental
authorities. Buyer and Seller agree to act with due diligence and cooperate with
each other in seeking such approvals or authorizations.

     14.2  BPU Approval. All of Seller's obligations set forth herein are 
           ------------
subject to approval by the BPU upon terms and conditions acceptable to the
parties in their sole discretion. Seller agrees in seeking such approval to
request the BPU to approve, in toto, all of the terms, conditions and rates set
                            -- ----
forth in this Agreement and to find, specifically, that such terms, conditions
and rates are reasonable for the term hereof, including any extensions thereof.

     14.3  Regulatory Authorizations and Governmental Permits. Certain of 
           --------------------------------------------------
Seller's obligations set forth herein, particularly those set forth in paragraph
2.2(a) hereof, are subject to the receipt of regulatory authorizations and
governmental permits. The parties agree that the terms and conditions of such
orders,

                                      -44-
<PAGE>
 
permits and authorizations must be acceptable to all parties in their sole
discretion.

          Upon Seller's receipt of any regulatory authorization or governmental
permit that has a potential adverse impact on Buyer, Seller shall transmit to
Buyer a copy of such authorization or permit within ten (10) Days of receipt
thereof, and Buyer shall, within fifteen (15) Days of its receipt thereof, give
notice to Seller whether the terms and conditions of such authorization are
satisfactory to Buyer, and, thereafter, immediately following Seller's
acceptance or rejection of such authorization, Seller shall give notice to Buyer
of its acceptance or rejection. Seller shall also provide Buyer with copies of
all long-term firm Transportation Agreements with Transporter(s) for quantities
in excess of twenty-five thousand (25,000) Dekatherms per Day, and copies of
related certificate and abandonment applications of Transporter(s) filed with
the FERC.

     14.4  Construction of Facilities. Certain of Seller's obligations are 
           --------------------------
subject to the construction and placing in service of specific facilities. To
the extent Seller is responsible for such construction, Seller agrees, subject
to satisfaction of any other applicable conditions, to act with due diligence in
constructing and placing in service such facilities after the receipt of the
letters of credit required in paragraph 10.1.

                                      -45-
<PAGE>
 
          Within sixty (60) Days of Seller's execution of this Agreement, Seller
shall furnish Buyer a schedule showing its best estimate of the dates by which
(i) permits will have been received for the construction of the facilities
covered hereby, (ii) construction of such facilities will have been completed
and (iii) such facilities will have been in service. Seller shall notify Buyer
of any material changes in the schedule provided hereunder. The parties shall
mutually cooperate and use reasonable efforts to have such facilities (or other
facilities having less volumetric capacity) in service to permit testing of the
Facility by February 1, 1993.

          To the extent that Transporter(s) are responsible for the construction
of any required facilities, Seller agrees to act with due diligence to cause
Transporter(s) to construct and place in service such facilities. Commencing
January 1, 1992, Seller shall provide Buyer with quarterly reports as to the
status of any regulatory authorizations required by Transporter(s) to permit
Seller to render the services hereunder and as to the progress of any
construction of facilities by Transporter(s), equivalent to reports given to
Seller's managements, until such facilities are in-service.

     14.5  Mutual Cooperation. Both parties agree to cooperate with each other 
           ------------------
and to keep each other informed regarding their progress in carrying out their
respective obligations under this Agreement.

                                      -46-
<PAGE>
 
                                  ARTICLE 15

                            ASSIGNMENT OF INTERESTS
                            -----------------------

     15.1  Assignment of Interests. Either party may, without relieving itself 
           -----------------------
of its obligations under this Agreement, assign any of its rights hereunder to
an entity with which it is affiliated, but otherwise no assignment of this
Agreement or any of the rights or obligations hereunder shall be made unless
there first shall have been obtained the consent thereto in writing of the other
party, which consent shall not be unreasonably withheld. Any successor-in-
interest of Buyer or Seller shall be entitled to the rights and shall be subject
to the obligations of its predecessor-in-interest under this Agreement. It is
agreed, however, that the restrictions on assignment contained in this paragraph
shall not in any way prevent either party to this Agreement from pledging,
mortgaging or assigning its rights hereunder as security for its indebtedness to
a Financier. In connection therewith, Seller will execute an appropriate consent
to any such pledge, mortgage or assignment as reasonably requested by such
Financier. In addition, Seller will execute an appropriate consent in favor of
any limited partner of Buyer as reasonably requested by Financier. Any such
consent will acknowledge, in effect, that this Agreement has been duly
authorized and is valid and enforceable against Seller and that this Agreement
is in full force and effect, that Seller will not agree to any amendment to this
Agreement without such Financier's approval

                                      -47-
<PAGE>
 
in writing, which approval shall not be unreasonably withheld by the Financier,
that Seller will make all payments due to Buyer hereunder in accordance with the
instructions of the Financier, that Seller will not terminate this Agreement by
reason of Buyer's default, by reason of force majeure or under paragraph 3.9
hereof, without giving the Financier notice of default and notice of termination
and the same opportunity to cure provided to Buyer under this Agreement (plus
any longer period as may be necessary, not to exceed [*], if the Financier in
good faith is endeavoring to obtain possession of the Facility and pays
Seller's [*] for the Contract Quantity during such period), that Seller will
deliver to the Financier a copy of each notice of default and notice of
termination at the same time that such notice is delivered to Buyer, and that in
the event the Financier exercises its rights under its loan, partnership or
lease documentation with Buyer, Seller will accept performance by the Financier
or any successor or assign thereof, provided that the Financier or any such
successor or assign pays all sums then due to Seller hereunder and is also
otherwise in compliance with this Agreement, as Seller may consent to in
writing, which consent shall not be unreasonably withheld. Seller hereby agrees
that its consent shall not be required with respect to any assignment to a
Financier or any affiliated or related entity of Financier.

                                     -48-
<PAGE>
 
                                   ARTICLE 16

                                ECONOMIC CHANGES
                                ----------------

        16.1 Rate Changes. At least five (5) Days prior to the beginning of each
             ------------
month, Seller will provide to Buyer its calculation of the [*], and the [*], and
at least five (5) Days prior to each November 1, its calculation of the [*] and
other appropriate pricing determinations. The rates included in such calculation
shall be effective the first Day of the next month, provided, however, that if
Buyer challenges such rates, the rates shall nevertheless be effective on the
first Day of the Month but shall be collected subject to refund within thirty
(30) Days of a final BPU determination of the proper rates that comply with this
Agreement.

        16.2 [*]


                                      -49-
<PAGE>
 
[*]

        16.3 Amendment of Power Purchase and Interconnection Agreement.
             ----------------------------------------------------------
In the event Buyer and Seller amend their Power Purchase and
Interconnection Agreement in a manner which has a material economic impact on
Seller hereunder, particularly any amendment that would in any way affect the
amount of Gas to be used in the Facility, or otherwise agree to sell and
purchase less than the quantities of power provided in Article II of the Power
Purchase and Interconnection Agreement, as of the date of this Agreement, Buyer
and Seller shall have the right to renegotiate this Agreement so as to place
Buyer and Seller in substantially the same economic positions that they
experienced prior to the amendment of the Power Purchase and Interconnection
Agreement. Buyer agrees to give Seller reasonable prior notice before amending
the Power Purchase and Interconnection Agreement and provide Seller with a copy
of any amendment within ten (10) Days of its execution. 

                                      -50-
<PAGE>
 
         16.4 Letter of Credit. Any letter of credit provided by Buyer hereunder
              ----------------
as security for Buyer's obligations to Seller shall be subject to the prior
review and approval of Seller and shall contain terms and conditions reasonably
acceptable to Seller. Other than Financier, the issuers of such security shall
also be subject to Seller's prior approval, which approval shall not be
unreasonably withheld.

                                   ARTICLE 17

                              NOTICES AND ADDRESSES
                              ---------------------

         17.1 Any notice, request, demand, statement or payment provided for in
this Agreement shall be sent to the parties hereto at the following addresses:

              BUYER:       CAMDEN COGEN, L.P.
                           1600 Smith Street 
                           Suite 5000, 50th Floor
                           Houston, TX 77002 
                           Attn: H. Fred Levine

                           Telecopier: (713) 951-7745

                           Twenty-four Hour Dispatch Contact:
                           ----------------------------------
                           During Business Hours: Lawrence D. Thomas 
                           After Business Hours: H. Fred Levine

                           Payment, Wire Transfer:

                           CAMDEN COGEN, L.P.
                           (to be provided)
                           -------------------------------------------
                           -------------------------------------------

              SELLERS:     Notices:
                           --------

                           PUBLIC SERVICE ELECTRIC AND GAS COMPANY
                           80 Park Plaza 
                           25th Floor
                           Newark, NJ 07101 
                           Attn: Vice President Gas Supply

                           Telecopier:            (201) 643-8385

                                      -51-
<PAGE>
 
                           Twenty-four Hour Dispatch Contact:
                           ----------------------------------
                           During Business Hours: (201) 430-5075 
                           After Business Hours: (201) 430-5075
            
                           Payment, Wire Transfer:
                           -----------------------
            
                           PUBLIC SERVICE ELECTRIC AND GAS COMPANY
                           (to be provided)
                           -------------------------------------------
                           -------------------------------------------

            Any notice, request or demand shall be deemed to have been made
hereunder at such time as same has been deposited and stamped in registered
United States mail, postage prepaid; provided, that notices required under
paragraph 3.12 shall be given first by telephone or radio and then confirmed
immediately by telecopier, telex or other rapid transmittal system; and provided
further that notices under paragraph 3.11 shall be given by telecopier, telex,
or other similar rapid transmittal system, and such notices shall be deemed to
have been given on the Day or at the hour, as appropriate, sent by such rapid
transmittal system. Either party may change addresses under this Article 17 by
giving prior written notice to the other party.

                                   ARTICLE 18

                                 MISCELLANEOUS
                                 -------------

        18.1 This Agreement shall be governed by the laws of the State of 
New Jersey.

        18.2 This Agreement constitutes the entire agreement between the parties
hereto with respect to the matters set forth herein. This Agreement may be
executed in any number of

                                      -52-
<PAGE>
 
counterparts, each of which shall be deemed to be an original of this Agreement.

        18.3 The failure of either party hereto to exercise any right granted
hereunder shall not impair nor be deemed as a waiver of such party's privilege
of exercising such right at any subsequent time or times.

        18.4 All headings appearing herein are for convenience only, and shall
not be considered a part of this Agreement for any purpose or as in any way
interpreting, construing, varying, altering or modifying this Agreement or any
of the provisions hereof.

        18.5 No modification or amendment to this Agreement shall be effective,
unless such modification or amendment is in writing and signed by the parties
hereto.

        18.6 The terms of this Agreement and information disclosed pursuant to
this Agreement, including but not limited to the price paid for Natural Gas,
shall be kept confidential by Seller and Buyer, (a) except to the extent any
information must be disclosed to (i) Transporter(s) for the purpose of
effectuating transportation of the Natural Gas sold and purchased under this
Agreement and (ii) any person or entity for the purpose of evaluating a
financial participation in the Facility or in the financing of equity
investments in Buyer, and (b) except as required by law, regulation or request
of Governmental Authority.

        18.7 Seller shall cooperate with Buyer in connection with Buyer's  
efforts to purchase gas for the Resale Service

                                      -53-
<PAGE>
 
hereunder and, at Buyer's request, shall utilize reasonable efforts to make 
their representatives available to meet with potential Natural Gas suppliers 
identified by Buyer for that purpose.

        18.8 If the date of any payment obligation hereunder should occur on a
Saturday, Sunday or holiday, then such obligation shall be deferred until the 
next business Day thereafter.


                                   ARTICLE 19

                                   ARBITRATION
                                   -----------

        19.1 Unless provided otherwise in this Agreement, if any dispute arises 
hereunder which cannot be resolved by the parties, the matter shall be referred 
to an arbitration panel of three (3) persons having knowledge and experience in 
connection with similar Gas supply and service agreements for resolution. The 
panel shall be selected within thirty (30) Days of written notice of the dispute
and shall be comprised of one (1) member selected by Buyer, one (1) selected by
Seller and one (1) jointly selected by the arbitrators selected by Buyer and
Seller. Any arbitration proceeding shall be conducted in accordance with
procedures established by the American Arbitration Association. The decision of
the arbitrators shall be issued within sixty (60) Days of the commencement of
the proceeding and shall be binding on the parties, subject to any necessary
regulatory approvals.

                                      -54-
<PAGE>
 
        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be 
duly executed in duplicate by their respective duly authorized corporate 
officers effective as of the day and year first above written.

                                        SELLER:
                                        ------

WITNESS:                                PUBLIC SERVICE ELECTRIC AND GAS COMPANY

/s/ John J. Davis                       By /s/ Rudolph D. Stys
- -------------------------                  --------------------------------
                                        Title: Senior Vice President - Gas


                                        BUYER
                                        -----

                                        CAMDEN COGEN, L.P.
                                        (D/B/A Cogen Technologies Inc.)

WITNESS:                                By /s/ H. Fred Levine
                                           ---------------------------
/s/ Martha Calvert                      Title: Vice President
- ---------------------------

                                      55
<PAGE>
 

STATE OF NEW JERSEY, COUNTY OF Hunterdon, ss.
        
        On this the 15th day of May, 1991, before me, Barbara Cudzynowski, the 
undersigned officer, personally appeared, Rudolph D. Stys, known to me to be 
the person whose name subscribed to the within instrument and acknowledged that
Public Service Electric and Gas Company executed the same for the purposes 
therein contained.

        In witness whereof I hereunto set my hand and official seal.

/s/ Barbara Cudzynowski
- --------------------------------
Notary

Notary Public in and for the State of New Jersey.


                                     -56-
<PAGE>
 
STATE OF TEXAS, COUNTY OF HARRIS, ss.

        On this the 10th day of July, 1991, before me, Estaleeta Watson, the 
undersigned officer, personally appeared, H. Fred Levine, known to me to be the 
person whose name subscribed to the within instrument and acknowledged that he, 
as Vice President of Cogen Technologies Camden, Inc., the General Partner of 
Camden Cogen, L.P., executed the same for the purposes therein contained.
        
        In witness whereof I hereunto set my hand and official seal.


/s/ ESTALEETA WATSON
- ---------------------------
Notary

Notary Public in and for the State of Texas.


                                     -57-
<PAGE>
 

                                   EXHIBIT A
                                   ---------

                                      [*]


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. NO. 10 GAS                                      ORIGINAL SHEET NO. 1




                                   EXHIBIT B

                                  BASE RATES
                                  ----------

                                    TARIFF

                                      FOR

                                  GAS SERVICE




                                APPLICABLE IN 

                         TERRITORY SERVED AS SHOWN ON

                     SHEET NOS. 3 THROUGH 5 OF THIS TARIFF


                    PUBLIC SERVICE ELECTRIC AND GAS COMPANY

                                GENERAL OFFICES

                                 80 PARK PLAZA

                           NEWARK, NEW JERSEY  07101



DATE OF ISSUE:  NOVEMBER 14, 1986                        EFFECTIVE: OCTOBER 31
    ISSUED BY FREDRICK R. DE SANTI, SENIOR VICE PRESIDENT--CUSTOMER OPERATIONS
                    80 PARK PLAZA, NEWARK, NEW JERSEY 07101
 FILED PURSUANT TO ORDER OF BOARD OF PUBLIC UTILITIES, DATED OCTOBER 31, 1986
                           IN DOCKET NOT. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               Fourth Revised Sheet No. 2
                                                              Superseding
P.U.C.N.J. No. 10 GAS                                  Third Revised Sheet No. 2


                               TABLE OF CONTENTS

Title Page..........................................................Sheet No. 1
Table of Contents...................................................Sheet No. 2
Territory Served..................................Sheets Nos. 3 to 5, inclusive
Standard Terms and Conditions....................Sheets Nos. 6 to 18, inclusive
Levelized Gas Adjustment...........................................Sheet No. 19
Commodity Charge Applicable to Rate Schedule ISG..................Sheet No. 19A
Commodity Charge Applicable to Rate Schedule CIG..................Sheet No. 19C


RATE SCHEDULES AS LISTED BELOW:


                                                            RATE       SHEET
APPLICABLE TO ENTIRE TERRITORY SERVED FOR:                SCHEDULE       NO.

Residential Service........................................ RSG         20
General Service............................................ GSG         22
Large Volume Service....................................... LVG         23
Street Lighting Service.................................... SLG         24
Interruptible Service...................................... ISG         27 
Cogeneration Interruptible Service......................... CIG         36
Firm Transportation Gas Service...........................TSG-F         40
Non-Firm Transportation Gas Service......................TSG-NF         43







Date of Issue: November 5, 1990                     Effective: November 1, 1990
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1990
                           in Docket No. GR90070649J
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. NO. 10 GAS                                       ORIGINAL SHEET NO. 3



                               TERRITORY SERVED

BERGEN COUNTY

Allendale, Borough of                          Ridgefield Park, Village of   
Alpine, Borough of                             Ridgewood, Village of   
Bergenfield, Borough of                        River Edge, Borough of 
Bogota, Borough of                             River Vale, Township of         
Carlstadt, Borough of                          Rochelle Park, Township of 
Cliffside Park, Borough of                     Rockleigh, Borough of 
Closter, Borough of                            Rutherford, Borough of 
Cresskill, Borough of                          Saddle Brook, Township of 
Demarest, Borough of                           Saddle River, Borough of
Dumont, Borough of                             South Hackensack, Township of 
East Rutherford, Borough of                    Teaneck, Township             
Edgewater, Borough of                          Tenafly, Borough of           
Elmwood Park, Borough of                       Teterboro, Borough of          
Emerson, Borough of                            Upper Saddle River, Borough of
Englewood, City of                             Waldwick, Borough of          
Englewood Cliffs, Borough of                   Wallington, Borough of        
Fair Lawn, Borough of                          Washington, Township of 
Fairview, Borough of                           Westwood, Borough of 
Fort Lee, Borough of                           Woodcliff Lake, Borough of 
Franklin Lakes, Borough of                     Wood-Ridge, Borough of 
Garfield, City of                              Wyckoff, Township of 
Glen Rock, Borough of
Hackensack, CIty of                            BURLINGTON COUNTY 
Harrington Park, Borough of
Hasbrouck Heights, Borough of                  Beverly, City of 
Haworth, Borough of                            Bordentown, City of 
Hillsdale, Borough of                          Bordentown Township of 
Ho-Ho-Kus, Borough of                          Burlington, City of 
Leonia, Borough of                             Chesterfield, Township of 
Little Ferry, Borough of                       Cinnaminson, Township of 
Lodi, Borough of                               Delanco, Township of 
Lyndhurst, Township of                         Delran, Township of 
Mahwah, Township of                            Eastampton, Township of 
Maywood, Borough of                            Edgewater Park, Township of 
Midland Park, Borough of                       Evesham, Township of 
Montvale, Borough of                           Fieldsboro, Borough of 
Moonachie, Borough of                          Florence, Township of         
New Milford, Borough of                        Hainesport, Township of 
North Arlington, Borough of                    Lumberton, Township of 
Northvale, Borough of                          Mansfield, Township of 
Norwood, Borough of                            Maple Shade, Township 
Oakland, Borough of                            Medford, Township of 
Old Tappan, Borough of                         Moorestown, Township of 
Oradell, Borough of                            Mount Holly, Township of 
Palisades Park, Borough of                     Mount Laurel, Township of 
Paramus, Borough of                            New Hanover, Township of 
Park Ridge, Borough of                         North Hanover, Township of 
Ramsey, Borough of                             Palmyra, Borough of 
Ridgefield, Borough of                         Pemberton Borough of 
                                               Pemberton, Township of 



Date of Issue: November 14, 1986                     Effective: October 31, 1986
   Issued by FREDRICK R. DE SANTI, Senior Vice President-Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986 
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMAPNY

P.U.C.N.J. NO. 10 GAS                                      ORIGINAL SHEET NO. 4



                               TERRITORY SERVED
                                  (CONTINUED)

BURLINGTON COUNTY - CONTINUED                   South Orange, Village of
                                                Verona, Borough of
Riverside, Township of                          West Caldwell, Borough of
Riverton , Borough of                           West Orange, Town of
Southampton, Township of                        
Springfield, Township of                        GLOUCESTER COUNTY
Westampton, Township of
Willingboro, Township                           Deptford, Township of           
Woodland, Township of                           National Park, Borough of
Wrightstown, Borough of                         West Deptford, Township of
                                                Westville, Borough of
CAMDEN COUNTY                                   Woodbury, City of

Audubon, Borough of                             HUDSON COUNTY
Audubon Park, Borough of
Barrington, Borough of                          Bayonne, City of        
Bellmawr, Borough of                            East Newark, Borough of
Brooklawn, Borough of                           Guttenberg, Town of
Camden, City of                                 Harrison, Town of
Cherry Hill, Township of                        Hoboken, City of
Collingswood, Borough of                        Jersey City, City of
Gloucester, City of                             Kearny, Town of
Haddon, Township of                             North Bergen, Township of
Haddonfield, Borough of                         Secaucus, Town of
Haddon Heights, Borough of                      Union City, City of
Lawnside, Borough of                            Weehawken, Township of
Merchantville, Borough of                       West New York, Town of
Mount Ephraim, Borough of
Oaklyn, Borough of                              HUNTERDON COUNTY
Pennsauken, Township                            
Tavistock, Borough of                           East Amwell, Township of        
Wook-Lynne, Borough of                          Readington, Township of        
                                                Tewksbury, Township of
ESSEX COUNTY                                    
                                                MERCER COUNTY                 
Belleville, Town of                                                           
Bloomfield, Town of                             East Windsor, Township of       
Caldwell, Borough of                            Ewing, Township of              
Cedar Grove, Township of                        Hamilton, Township of           
East Orange, City of                            Hightstown, Borough of          
Essex Falls, Borough of                         Lawrence, Township of           
Fairfield, Borough of                           Princeton, Borough of           
Glen Ridge, Borough of                          Princeton, Township of          
Irvington, Town of                              Trenton, City of                
Livingston, Township                            Washington, Township of         
Maplewood, Township of                          West Windsor, Township of       
Millburn, Township of                                                           
Montclair, Town of                              MIDDLESEX COUNTY                
Newark, City of                                                                 
North Caldwell, Borough of                      Cranbury, Township of           
Nutley, Town of                                 Dunellen, Borough of            
Orange, City of                                 East Brunswick, Township of     
Roseland, Borough of                              
                                                


Date of Issue: November 14, 1986                     Effective: October 31, 1986
Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMAPNY

P.U.C.N.J. NO. 10 GAS                                      ORIGINAL SHEET NO. 5



                               TERRITORY SERVED
                                  (CONTINUED)

MIDDLESEX COUNTY-COUNTINUED                     OCEAN COUNTY

Edison, Township of                             Plumsted, Township of
Helmetta, Borough of                    
Highland Park, Borough of                       PASSAIC COUNTY
Jamesburg, Borough of
Madison, Township of                            Bloomingdale, Borough of
Middlesex, Borough of                           Clifton, City of
Milltown, Borough of                            Haledon, Borough of
Monroe, Township of                             Hawthorne, Borough of
New Brunswick, City of                          Little Falls, Township of
North Brunswick, Township of                    North Haledon, Borough of
Piscataway, Township of                         Passaic, City of
Plainsboro, Township of                         Paterson, City of
Sayreville, Borough of                          Pompton Lakes, Borough of
South Amboy, City of                            Prospect Park, Borough of
South Brunswick, Township of                    Ringwood, Borough of
South Plainfield, Borough of                    Totowa, Borough of
South River, Borough of                         Wanaque, Borough of
Spotswood, Borough of                           Wayne, Township of
                                                West Milford, Township of
MONMOUTH COUNTY                                 West Paterson, Borough of

Allentown, Borough of                           SOMERSET COUNTY 
Millstone, Township of
Roosevelt, Borough of                           Bedminster, Township of
Upper Freehold, Township of                     Bernards, Township of
                                                Bernardsville, Borough of
MORRIS COUNTY                                   Bound Brook, Borough of
                                                Branchburg, Township of
Butler, Borough of                              Bridgewater, Township of
Chatham, Borough of                             Far Hills, Borough of
Chatham, Township of                            Franklin, Township of        
Chester, Borough of                             Green Brook, Township of
Chester, Township of                            Hillsborough, Township of
Denville, Township of                           Manville, Borough of 
East Hanover, Township of                       Millstone, Borough of        
Florham Park, Borough of                        Montgomery, Township of
Hanover, Township of                            North Plainfield, Borough of
Harding, Township of                            Peapack-Gladstone, Borough of
Jefferson, Township of                          Raritan, Borough of
Kinneton, Borough of                            Rocky Hill, Borough of
Madison, Borough of                             Somerville, Borough of
Mendham, Borough of                             South Bound Brook, Borough of
Mendham, Township of                            Warren, Township of
Morris, Township of                             Watchung, Borough of
Morris Plains, Borough of
Morristown, Town of                             UNION COUNTY
Parsippany-Troy Hills, Township of
Passaic, Township of                            Berkeley Heights, Township of
Pequannock, Township of                         New Providence, Borough of
Randolph, Township of                           Plainfield, City of
Riverdale, Borough of                           Springfield, Township of
                                                Summit, City of



Date of Issue: November 14, 1986                     Effective: October 31, 1986
Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 

PUBLIC SERVICE ELECTRIC AND GAS COMPANY               SECOND REVISED SHEET NO. 6
                                                             SUPERSEDING
P.U.N.C.J. No. 10 GAS                                  FIRST REVISED SHEET NO. 6

                      STANDARD TERMS AND CONDITIONS-INDEX

                                                                         Sheet
                                                                          No.
 1. GENERAL..............................................................   7

 2. OBTAINING SERVICE....................................................   7
     2.1.  Application...................................................   7
     2.2.   Selection of Rate Schedule...................................   7
     2.3.   Deposit and Guarantee........................................   8
     2.4.   Main Extensions..............................................   8
     2.5.   Service Connections..........................................   8
     2.6.   Permits......................................................   8
     2.7.   Temporary Service............................................   8

 3. EXTENSION OF DISTRIBUTION MAINS......................................   8
     3.1.  General.......................................................   8
     3.2.  Individual Residential Customer...............................   9
     3.3.  Residential Land Developer....................................   9
     3.4.  Commercial and Industrial.....................................   9

 4. CHARACTERISTICS OF SERVICE...........................................  10
     4.1.  Standard Service Supply.......................................  10
     4.2.  Heat Measurement and Billing Units............................  10
     4.3.  Standard Pressure.............................................  10

 5. SERVICE CONNECTIONS..................................................  10
     5.1.  General.......................................................  10
     5.2.  Service Connection Charges....................................  10
     5.3.  Change in Location of Existing Service Pipe...................  10

 6. METERS AND ASSOCIATED EQUIPMENT......................................  11
     6.1.  General.......................................................  11
     6.2.  Seals.........................................................  11
     6.3.  Protection of Meter and Service Equipment.....................  11
     6.4.  Public Service to Turn on Gas.................................  11
     6.5.  Change in Location of Meters and Associated Equipment.........  11
     6.6.  Tampering.....................................................  11

 7. CUSTOMER'S INSTALLATION..............................................  12
     7.1.  General.......................................................  12
     7.2.  Piping........................................................  12
     7.3.  Utilization Apparatus.........................................  12 
     7.4.  Back Pressure and Suction.....................................  12
     7.5.  Maintenance of Customer's Installation........................  12
     7.6.  Appliance Adjustments.........................................  12
     7.7.  Adequacy and Safety of Installation...........................  12
     7.8.  Liability for Customer's Installation.........................  12

8.  METER READING AND BILLING............................................  12
     8.1.  Measurement of Gas Used.......................................  12
     8.2.  Correction for Pressure.......................................  13
     8.3.  Separate Billing for Each Installation........................  13
     8.4.  Metering on Customer's Premises...............................  13
     8.5.  Testing of Meters.............................................  14
     8.6.  Billing Adjustments...........................................  14
     8.7.  Meter Reading and Billing Period..............................  14
     8.8.  Proration of Monthly Charges..................................  14
     8.9.  Averaged Bills................................................  14
     8.10. Budget Plan...................................................  14
     8.11. Billing of Charges in Tariff..................................  14
     8.12. Payment of Bills..............................................  14
     8.13. Late Payment Charge...........................................  14
     8.14. Returned Check Charge.........................................  14 

 9.  LEAKAGE.............................................................  15

10.  ACCESS TO CUSTOMER'S PREMISES.......................................  15

11.  DISCONTINUANCE OF SERVICE...........................................  15
     11.1. By Public Service.............................................  15
     11.2. At Customer's Request.........................................  16

12.  RECONNECTION CHARGE.................................................  16

13.  SERVICE LIMITATIONS.................................................  17
     13.1. Continuity of Service.........................................  17
     13.2. Emergencies...................................................  17
     13.3. Unusual Conditions............................................  17

14.  TERMINATION, CHANGE, OR MODIFICATION OF PROVISIONS OF TARIFF........  17


Date of Issue: October 3, 1989                     Effective: September 25, 1989
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901
<PAGE>
 

PUBLIC SERVICE ELECTRIC AND GAS COMPANY               SECOND REVISED SHEET NO. 7
                                                             SUPERSEDING
P.U.N.C.J. No. 10 GAS                                  FIRST REVISED SHEET NO. 7

                         STANDARD TERMS AND CONDITIONS

1.  GENERAL

These Standard Terms and Conditions, filed as a part of the gas tariff of Public
Service Electric and Gas Company, hereinafter referred to as "Public Service," 
set forth the terms and conditions under which gas service will be supplied and 
govern all classes of service to the extent applicable, and are made a part of 
all agreements for the supply of gas service unless specifically modified in a 
particular rate schedule.

No representative of Public Service has authority to modify any provision 
contained in this Tariff or to bind Public Service by any promise or 
representation contrary thereto.

The benefits and obligations under an application or agreement for service shall
begin when Public Service makes gas service available to the customer.

Standard agreements to supply gas service shall be in accordance with the rate 
schedule and shall be based upon plant facilities which are sufficient for safe,
proper, and adequate service. Public Service may require agreements for a longer
term than specified in the rate schedule, may require contribution toward the 
investment, and may establish such Minimum Charges and Facilities Charges as may
be equitable under the circumstances involved where: (1) large or special 
investment is necessary for the supply of service; (2) capacity required to 
serve customer's equipment is out of proportion to the use of gas service for 
occasional, intermittent, or low load factor purposes, or is for short 
durations.

Publications set forth by title in sections of these Standard Terms and 
Conditions are incorporated in the Tariff by reference.

2. OBTAINING SERVICE

2.1. Application: An application for gas service may be made at any of the
     Customer Service Centers of Public Service in person, by mail, or by
     telephone. Forms for application for service, when required together with
     terms and conditions and rate schedules, will be furnished upon request.
     Customers shall state, at the time of making application for service, the
     conditions under which service will be required and customer may be
     required to sign an agreement or other form then in use by Public Service
     covering special circumstances for the supply of gas service. Data
     requested from customers may include proof of identification such as a
     Driver's License, as well as copies of leases, deeds and corporate
     charters. Such information shall be considered confidential.
     
     Public Service may reject applications for service where such service is
     not available or where such service might affect the supply if gas to other
     customers or for failure of customer to agree to comply with any of these
     Standard Terms and Conditions.

     See also Section 13 Service Limitations, of these Standard Terms and 
     Conditions.

2.2. Initial Selection of Rate Schedule: Public Service will assist in the
     selection of the available schedule which is most favorable from the
     standpoint of the customer. Any advice given by Public Service will
     necessarily be based on customer's written statements detailing his
     proposed operative conditions.

     Customer may, upon written notice to Public Service within three months
     after service is begun elect to change and to receive service under any
     other available rate schedule. Public Service will furnish service to and
     bill the customer under the rate schedule so selected from the date of last
     schedule meter reading, but no further change will be allowed during the
     next twelve months.

2.2.1. Change of Rate Schedule: Subsequent to initial selection of a rate
       schedule, customer shall notify Public Service in writing of any change
       in his use of service which might affect the selection of a rate schedule
       or provision within a rate schedule. Any change in schedule of provision
       be applicable if permitted to the next regular billing subsequent to such
       notification.


Date of Issue: February 20, 1987                    Effective: February 16, 1987
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated February 13, 1987
                            in Docket No. ER85121163
 
<PAGE>
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               SECOND REVISED SHEET NO. 8
P.U.N.C.J. No. 10 GAS                                                SUPERSEDING
                                                       FIRST REVISED SHEET NO. 8

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

     2.3.  DEPOSIT AND GUARANTEE: Where Public Service deems it necessary, a
           deposit or other guarantee satisfactory to Public Service may be
           required as security for the payment of future and final bills before
           Public Service will commence or continue to render service, or
           perform necessary preliminary work prior to meter installation.

           A deposit may be required from a customer equal to the estimated
           bills which would accrue for two months' service at the applicable
           rate schedule. A customer taking service for a period of less than
           thirty days may be required to deposit an amount equal to the
           estimated bill for such temporary period.

           Upon closing any account, the balance of any deposit remaining after
           the closing bill for service has been settled, shall be returned
           promptly to the depositor with interest due. Deposits shall cease to
           bear interest upon discontinuance of service.

           Public Service shall review a residential customer's account at least
           once every year and a non-residential customer's account at least
           once every 2 years. If such review indicates that the customer has
           established credit satisfactory to Public Service, then the
           outstanding deposit shall be refunded to the customer.

           In accordance with N.J.A.C. 14:3-7.5(c), simple interest at a rate
           equal to the average yields on new six-month Treasury Bills for the
           twelve month period ending each September 30 shall be paid by Public
           Service on all deposits held by it, provided the deposit has remained
           with Public Service for at least 3 months. Said rate, which shall be
           rounded up or down to the nearest half percent, shall be determined
           by the Board of Public Utilities, and shall become effective on
           January 1 of the following year.

           Interest payments shall be made at least once during each 12-month
           period in which a deposit is held and shall take the form of credits
           on bills toward utility service rendered or to be rendered, for
           residential accounts.

           A deposit is not a payment or part payment of any bill for service,
           except that on discontinuance of service Public Service may apply
           said deposit against unpaid bills for service, and only the remaining
           balance of the deposit will be refunded. Public Service shall read
           the meters and ascertain that the obligations of the customer have
           been fully performed before being required to return any deposit. To
           have service resumed, customer will be required to restore deposit to
           original amount.

     2.4.  MAIN EXTENSIONS: The customer may be required to make a deposit for
           the extension of gas mains as set forth in Section 3 of these
           Standard Terms and Conditions.

     2.5.  SERVICE CONNECTIONS: The customer may be required to make a
           contribution toward the cost of installing a service connection as
           set forth in Section 5 of these Standard Terms and Conditions.

     2.6.  PERMITS: Public Service, where necessary, will make application for
           any street opening permits for installing its service connections and
           shall not be required to furnish service until after such permits are
           granted. The customer may be required to pay the municipal charge, if
           any, for permission to open the street. The customer shall obtain and
           present to Public Service, for recording or for registration, all
           instruments providing for easements or rights of way, and all permits
           (except street opening permits), consents, and certificates necessary
           for the introduction of service.

     2.7.  TEMPORARY SERVICE: Where service is to be used at an installation for
           a limited period and such installation is not permanent in nature,
           the use of service shall be classified as temporary. In such cases,
           the customer may be required to pay to Public Service the cost of the
           facilities required to furnish service. The minimum period of
           temporary service for billing purposes shall be one month.

           After two years of service a temporary service installation shall be
           eligible for refunds. Excluding the first two annual service periods,
           refunds equal to 10% of the revenue received by Public Service during
           an annual service period shall be made at the end of such period. In
           no case shall the total amount refunded be in excess of the
           installation cost paid by the customer, nor shall refunds be made for
           more than eight consecutive annual service periods.

3.  EXTENSION OF DISTRIBUTION MAINS

     3.1.  GENERAL: Public Service will construct, own, and maintain
           distribution mains located on streets, highways and on rights of way
           acquired by Public Service, used or usable as part of the
           distribution system of Public Service. The making of a deposit under
           any of the following cases shall not give the customer any interest
           in the facilities, the ownership being vested exclusively in Public
           Service.

Date of Issue: August 7, 1990                          Effective: July 19, 1990 
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
   Filed pursuant to Order of Board of Public Utilities, dated July 19, 1990
                           in Docket No. GT90060595
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                       ORIGINAL SHEET NO. 9


                        STANDARD TERMS AND CONDITIONS 
                                  (CONTINUED)


        The following formulae shall not be binding on the parties but are
        suggested as a guide to customers and utilities. Parties are still free
        to exercise their rights under New Jersey Revised Statutes 48:2-27. When
        an applicant for an extension is dissatisfied with these suggested
        extension regulations he may petition the Board for a finding that the
        extension should be made without charge.

3.2     INDIVIDUAL RESIDENTIAL CUSTOMER: Where the cost to Public Service for an
        extension to serve an individual permanent residential customer does not
        exceed five times the estimated annual revenue, Public Service will make
        the necessary extension upon receiving from the customer an application
        for service. Such application shall be made by the owner of the property
        or by a responsible tenant and shall be for an indefinite period; not
        less, however, than the number of years necessary to produce, at the
        normal annual charge, the cost of the extension.

     3.2.1   Where the cost of an extension exceeds the amount which Public
             Service will install without cost to a customer, in accordance with
             Section 3.2, the excess cost of the extension shall be deposited
             and remain with Public Service without interest. When the actual
             annual revenue from premises exceeds the amount of revenue which
             was used as the basis for the initial deposit computation, or the
             basis for a previous deposit return, there shall be returned to the
             depositor an additional amount equal to five times such excess. In
             no event shall more than the original deposit be returned to the
             depositor nor shall any part of the deposit remaining after ten
             years from the date of the original deposit be returned. Public
             Service will waive the deposit required where the amount is $100.00
             or less.

     3.2.2   Where the cost to Public Service for an extension to serve an
             individual permanent residential customer exceeds the amount which
             Public Service will install without cost to the customer, in
             accordance with Section 3.2, Public Service and the customer may
             agree upon a monthly revenue guarantee not to exceed one-sixtieth
             of the total cost of the extension, in lieu of a deposit pursuant
             to Section 3.2.1.

3.3     RESIDENTIAL LAND DEVELOPER: Where applications for extensions into newly
        developed tracts of land are made by individuals, partnerships, or
        corporations interested in the development or sale of land but not as
        ultimate residents, Public Service may require a deposit from the
        applicant covering the entire cost of the extension necessary to serve
        the tract.

     3.3.1.  Extension deposits shall not carry interest and are to be returned
             as hereinafter provided to depositor when new buildings abutting on
             such extensions are under construction and have been framed and
             roofed.
 
     3.3.2.  The deposit shall be returned in an amount equal to five times the
             estimated annual revenue from each such completion on said
             extension. If during a ten-year period from the date of the
             original deposit, the actual annual revenue, during any year of
             said ten-year period, from premises exceeds the annual revenue
             which was the basis for the previous deposit return, there shall be
             returned to the depositor an additional amount equal to five times
             such excess. In no event shall more than the original deposit be
             returned to the depositor nor shall any part of the deposit
             remaining after ten years from the date of the original deposit be
             returned.
 
3.4     COMMERCIAL AND INDUSTRIAL: Public Service may require any customer to
        deposit an amount equal to the entire cost of the new facilities
        required to supply service, such amount to be subject to refund as
        follows: At the end of the first service year, an amount without
        interest equal to 10% of the total amount of the monthly bills rendered
        to and paid by the customer for gas service furnished by Public Service
        for that year will be refunded, and thereafter refunds similarly
        determined will continue each year until such time as the accumulated
        annual refunds are equal to but not in excess of the sum






Date of Issue:  November 14, 1986                   Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. NO. 10 GAS                                      ORIGINAL SHEET NO. 10

                         STANDARD TERMS AND CONDITIONS
                                  (CONTINUED)

        deposited; provided, however, that any part of the deposit not returned
        to the customer within ten years after the beginning of the first
        service year shall remain the property of Public Service. No refund will
        be made if service is discontinued prior to the expiration of the first
        service year.

        Where it is necessary to provide additional facilities to serve
        increased requirements of an existing customer, Public Service may
        require the customer to deposit an amount equal to the cost of such
        additional facilities. This amount shall be subject to refund as
        outlined in the preceding paragraph except that the refunds will be
        calculated at 10% of the excess revenue over a predetermined base.

4.  CHARACTERISTICS OF SERVICE

   4.1  STANDARD SERVICE SUPPLY: The gas supplied may be manufactured or
        derived from natural sources altered to remove impurities and to add
        desirable constituents. The character of the gas will be of nature which
        will fulfil the requirements of the regulations of the Board of Public
        Utilities.

   4.2  HEAT MEASUREMENT AND BILLING UNITS: For billing purposes, the customer's
        gas use in cubic feet will be converted to therms, using the estimated
        calendar twelve-month average heating value on a dry basis, of the gas
        distributed, where a therm is a unit of heat energy equivalent to
        100,000 British Thermal Units (Btu's).

   4.3  STANDARD PRESSURE: The standard pressure supplied at the meter outlet
        will be within the range of to 7 inches water column pressure.

5.  SERVICE CONNECTIONS

   5.1  GENERAL: The customer shall consult Public Service as to the exact point
        at which the service pipe will enter the building before installing
        interior gas piping or starting any other work dependent upon the
        location of the service pipe. Public Service will determine the location
        of the service pipe depending upon existing facilities in the street and
        other practical considerations.

        Gas service will be supplied to each building or premises through a
        single service pipe except where, in the judgement of Public Service,
        its economic considerations; conditions on its distribution system;
        improvement of service conditions; or volume of the customer's
        requirements, make it desirable to install more than one service pipe.

        The making of a payment in any of the following cases shall not give the
        customer any interest in service connection, the ownership being vested
        exclusively in Public Service.

   5.2  SERVICE CONNECTION CHARGES: Public Service will furnish and place, at no
        cost to the customer up to 200 feet of service connection, measured at
        right angles from the nearest curb line to the customer's building, at
        the point of service entrance designated by Public Service. Where the
        distance is in excess of 200 feet, the service pipe will be installed
        subject to a charge equal to the amount by which the cost of the service
        connection exceeds the greater of either twice the customer's annual
        revenue as estimated by Public Service or the cost of the first 200 feet
        of service connection which otherwise would be furnished without charge
        as provided above. Should the customer request a service entrance at a
        location other than that designated by Public Service, the customer
        shall pay the additional cost associated with said change in point of
        service entrance provided that the customer shall not be required to pay
        for the first 200 feet of service connection in any case and provided
        further, that the customer shall not be required to pay for any
        portion of the cost of the service connection if the cost thereof does
        not exceed twice the estimated annual revenue. Public Service will waive
        the charge to the customer when the amount is $50.00 or less.

        The charge for the service connection, when the service pipe is of a
        size up to and including 4 inch diameter pipe, shall be determined by
        the application of established unit costs per foot. These unit costs are
        available for customer's inspection. Where the size of the service pipe
        is greater than 4 inch, the charge shall be based on actual construction
        costs.

   5.3  CHANGE IN LOCATION OF EXISTING SERVICE PIPE: Any change requested by the
        customer in the location of the existing service pipe, if approved by
        Public Service, will be made at the expense of the customer.

Date of Issue:  November 14, 1986                    Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             SECOND REVISED SHEET NO. 11
                                                            SUPERSEDING
P.U.C.N.J. NO.10 GAS                                  FIRST REVISED SHEET NO. 11


                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

6.  METERS AND ASSOCIATED EQUIPMENT

     6.1. GENERAL: A single meter will be furnished and installed by Public
          Service for each separately billed rate schedule under which a
          customer receives service. Public service shall be consulted regarding
          meter locations. Meter installations shall be in conformance with
          "Installation of Gas Appliances and Gas Piping," issued by Public
          Service and available on request. Where permitted, the meter shall be
          located outside. If the meter cannot be located outside, the meter
          shall be set so it can be read from outside the building, such as
          through a transparent glass block or by a remote meter reading device.

          When requested by a customer, remote meter reading equipment, which
          transmits the reading on a meter to a repeating register located on
          the outside of a building, may be installed, if feasible, at the
          expense of the customer. The payment shall not give the customer any
          interest in the equipment thus installed, the ownership being vested
          exclusively in Public Service.

          Additional meters will be installed only where, in the judgment of
          Public Service, its economic considerations; conditions on its
          distribution system; improvement of service conditions; or the volume
          of the customer's requirements, make it desirable to install such
          additional meters.

     6.2. SEALS:  Public Service may seal or lock any meters or enclosures
          containing meters and associated metering equipment. No person except
          a duly authorized employee of Public Service shall break or remove a
          Public Service seal or lock.

     6.3. PROTECTION OF METER AND SERVICE EQUIPMENT: Customer shall furnish and
          maintain a suitable space to the meter and associated equipment. Such
          space shall be as near as practicable to the point of entrance of the
          gas service pipe, adequately ventilated, dry and free from corrosive
          vapors, not subject to extreme temperatures, readily accessible to
          duly authorized employees or agents of Public Service and shall
          otherwise conform to "Installation of Gas Appliances and Gas Piping,"
          issued by Public Service and available on request. Customer shall not
          tamper with or remove meters or other equipment, nor permit access
          thereto except by duly authorized employees or agents of Public
          Service. In case of loss or damage to the property of Public Service
          from the act or negligence of the customer or his agents or servants,
          or of failure to return equipment supplied by Public Service, customer
          shall pay to Public Service the amount of such loss or damage to the
          property. All equipment furnished at the expense of Public Service
          shall remain its property and may be replaced whenever deemed
          necessary and may be removed by it at any reasonable time after the
          discontinuance of service. In the case of defective service, the
          customer shall not interfere or tamper with the apparatus belonging to
          Public Service but shall immediately notify Public Service to have the
          defects remedied.

     6.4. PUBLIC SERVICE TO TURN ON GAS:  No person other than a duly authorized
          employee or agent of Public Service shall turn gas into any new system
          of piping or into any old system of piping from which the use of gas
          has been discontinued.

     6.5. CHANGE IN LOCATION OF METERS AND ASSOCIATED EQUIPMENT: Any change
          requested by the customer in the existing location of meters and
          associated equipment, if approved by Public Service, will be made at
          the expense of the customer.

     6.6. TAMPERING: In the event it is established that Public Service meters
          or other equipment on the customer's premises have been tampered with,
          and, such tampering results in incorrect measurement of the service
          supplied as determined by Public Service, for non-residential
          accounts, the beneficiary shall pay for such service based upon the
          Public Service estimate from available data and not registered by
          Public Service meters. The beneficiary shall be the customer or other
          party who benefits from such tampering. In the case of residential
          accounts, all such costs shall be billed to the responsible party. The
          responsible party shall be the customer or other party who causes
          meter tampering to be committed.

          The actual cost of investigation, inspection, and determination of
          such tampering, and other costs, such as but not limited to, the
          installation of protective equipment, legal fees, and other costs
          related to the administrative, civil or criminal proceedings, may be
          billed to the responsible party.

          Tampering with Public Service facilities may by punishable by fine 
          and/or imprisonment under the New Jersey Code of Criminal Justice.





Date of Issue: September 4, 1987                     Effective: August 28, 1987
  Issued by FREDRICK R. DE SANTI. Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated August 28, 1987
                           in Docket No. ER85121163

<PAGE>
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               FIRST REVISED SHEET NO. 12
                                                             SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                    ORIGINAL SHEET NO. 12

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

7.  CUSTOMER'S INSTALLATION

     7.1. GENERAL:  No material change in the size, total capacity, or method
          of operation of customer's equipment shall be made without previous
          written notice to Public Service.

     7.2. PIPING:  Gas piping installed on the customer's premises must conform
          to all requirements of municipal or other property constituted public
          authorities and to the regulations set forth in "Installation of Gas
          Appliances and Gas Piping," issued by Public Service and available on
          request.

     7.3. UTILIZATION APPARATUS:  All utilization apparatus shall have the
          approval of the American Gas Association Testing Laboratories
          (American Standard Approval Requirements) and, in addition, shall have
          the approval of Public Service. The manner of installation of all
          utilization apparatus shall be in accordance with "Installation of Gas
          Appliances and Gas Piping," issued by Public Service and available on
          request.

          Where the use of gas service is to be intermittent or occasional, or
          for low load factor purposes or for short durations, equipment shall
          not be connected without previous written notice to Public Service.

     7.4. BACK PRESSURE AND SUCTION:  When the nature of the customer's
          utilization apparatus is such that it may cause back pressure or
          suction in the piping system, meters, or other associated equipment of
          Public Service, suitable protective devices, subject to inspection and
          approval by Public Service, shall be furnished, installed, and
          maintained by the customer.

     7.5. MAINTENANCE OF CUSTOMER'S INSTALLATION:  Customer's entire
          installation shall be maintained in the condition required by the
          municipal or other public authorities having jurisdiction and by
          Public Service.

     7.6. APPLIANCE ADJUSTMENTS:  Public Service will make, free of charge,
          adjustments to gas burners and certain associated equipment necessary
          to the functioning of gas appliances in use on customer's premises.
          Other adjustments or repairs to such appliances may be made, or other
          services connected with the rendering of gas service may be
          performed, by Public Service at the customer's expense. Service
          procedures are detailed in "Servicing Equipment and Facilities on
          Customers' Premises," issued by Public Service and available on
          request.

     7.7. ADEQUACY AND SAFETY OF INSTALLATION:  Public Service shall not be
          required to supply gas service until the customer's installation shall
          have been approved by the authorities having jurisdiction. Public
          Service may withhold or discontinue its service whenever such
          installation or part thereof is deemed by Public Service to be unsafe,
          inadequate, or unsuitable for receiving service, or to interfere with
          or impair the continuity or quality of service to the customer or to
          others.

          Public Service will assume no responsibility for the condition of
          customer's gas installation or for accidents, fires, or failures which
          may occur as the result of the condition of such gas installation.

          Neither by inspection or nonrejection, nor in any other way, does
          Public Service give any warranty expressed or implied, as to the
          adequacy, safety, or other characteristics of any structure,
          equipment, wires, pipes, appliances, or devices used by the customer.

     7.8. LIABILITY FOR CUSTOMER'S INSTALLATION:  Public Service will not be
          liable for damages or for injuries sustained by customers or others or
          by the equipment of customers or others by reason of the condition or
          character of customers' facilities or the equipment of others on
          customers' premises. Public Service will not be liable for the use,
          care or handling of the gas service delivered to the customer after
          same passes beyond the point at which the service facilities of Public
          Service connect to the customers' facilities.

8.  METER READING AND BILLING

     8.1. MEASUREMENT OF GAS USED: Public Service will select the type and make
          of metering equipment and may, from time to time, change or alter such
          equipment: its sole obligation is to supply meters that will
          accurately and adequately furnish records for billing purposes.


Date of Issue: February 20, 1987                   Effective:  February 16, 1987
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated February 13, 1987
                           in Docket No. ER85121163
<PAGE>
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               FORTH REVISED SHEET NO. 13
                                                             SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                 THIRD REVISED SHEET NO. 13

                      STANDARD TERMS AND CONDITIONS     
                                  (Continued)

     Where service through more than one meter is permitted by Public Service as
     outlined under Section 6.1 of these Standard Terms and Conditions, the
     cubic-foot use registered by the individual meters will be combined for
     billing purposes. In all other instances, each meter shall be billed
     separately.

     Bills will be based upon registration of Public Service meters except as 
     otherwise provided for in this Tariff.

8.2. CORRECTION FOR PRESSURE: In any case where, pursuant to Section 4.3, Public
     Service measures the gas delivered to a customer under pressure greater
     than that exerted by a column of water seven inches in height, the cubic
     feet of gas registered by the meter or meters of Public Service shall be
     subject to correction for billing purposes by the application of a proper
     correction factor.

8.3. SEPARATE BILLING FOR EACH INSTALLATION: The gas service used by a customer
     through each service connection shall be billed separately at the
     applicable rate schedule selected by the customer. See Sections 5.1 and 6.1
     of these Standard Terms and Conditions.

8.4. METERING ON CUSTOMER'S PREMISES:

 8.4.1.   GENERAL: The service and supply of gas by Public Service for the use
          of owners, landlords, tenants, or occupants of residential buildings
          or premises will be furnished to them as customers of Public Service
          through Public Service individual meters.
             
          The service and supply of gas by Public Service to owners, landlords,
          tenants, or occupants of industrial or commercial buildings or
          premises may be further distributed to other users within such
          structures and such use and resultant charges, including appropriate
          administrative costs, apportioned to such users. However, such charges
          shall not exceed the amount that Public Service would charge if the
          tenant was served and billed directly by Public Service.

 8.4.2.   SUBMETERING: The practice in which the customer of record buys gas
          from Public Service and resells it through some metering device at a
          profit is not permitted.

 8.4.3.   CHECK METERING: Where a customer monitors or evaluates his own
          consumption of gas or any portion thereof in an effort to promote and
          stimulate conservation or for accountability by means of individual
          meters, computers or otherwise, installed, operated, and maintained at
          such customer's expense, such practice will be defined as check
          metering.

          Gas check meters are devices that measure the volume of gas being
          delivered to particular locations in a system after measurement by a
          Public Service owned meter. Gas check meters provide the customer-of-
          record the means to apportion among the end users the cost of gas
          service being supplied through the Public Service owned meter.

          If the customer-of-record charges the tenant for the usage incurred by
          the tenant, reasonable administrative expenses may be included, such
          charges shall not exceed the amount Public Service would have charged
          such tenant if the tenant had been served and billed by Public Service
          directly.

          Check metering will be permitted in new or existing buildings or
          premises where the basic characteristic of use is industrial or
          commercial. Check metering will not be permitted in new or existing
          buildings or premises where the basic characteristic of use is
          residential, except where such buildings or premises are publicly
          financed or government owned; or are condominiums or cooperative
          housing: or are eleemosynary in nature. In the case of dwelling units,
          all gas consuming devices must be metered through a single check
          meter.
          
          Check metering for the aforementioned purposes and applications shall
          not adversely affect the ability of Public Service to render service
          to any customer within the affected building or premises or any other
          customer. The customer shall contact Public Service prior to the
          installation of any check metering device to ascertain that it will
          not cause operating problems. The owners of all check metering devices
          is that of the customer, along with all incidents in connection with
          said ownership, including accuracy of the equipment, meter reading and
          billing, liability arising from the presence of the equipment and the
          maintenance and repair of the equipment. Any additional costs which
          may result from and are attributable to the installation of check
          metering devices shall be borne by the customer.

Date of issue: October 3, 1989                     Effective: September 25, 1989
  Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President-Customer Operations 
                   80 Park Plaza, Newark, New Jersey 07101 
         Filed pursuant to Order of Board of Public Utilities, dated 
                           in Docket NO. GX8509901 
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              SECOND REVISED SHEET NO. 14
                                                              SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                 FIRST REVISED SHEET NO. 14

                         STANDARD TERMS AND CONDITIONS
                                  (Continued)

       The customer shall be responsible for the accuracy of check metering
       equipment. In the event of a dispute involving such accuracy, the Public
       Service meter will be presumed correct, subject to test results.

8.5.   TESTING OF METERS: At such times as Public Service may deem proper, or
       as the Board of Public Utilities may require, Public Service will test
       its meters in accordance with the standards and bases prescribed by the
       Board of Public Utilities.

       Public Service shall, without charge, make a test of the accuracy of a
       meter(s) upon request of the customer, provided such customer does not
       make a request for test more frequently than once in 12 months.

       A report giving results of such tests shall be made to the customer, and
       a complete record of such tests shall be kept on file at the office of
       Public Service in conformance with the New Jersey Administrative Code.

8.6.   BILLING ADJUSTMENTS: Whenever a meter is found to be registering fast by
       2% or more, an adjustment of charges shall be made. When a meter is found
       to be registering slow by more than 2%, an adjustment of charges may be
       made, except for residential accounts, where no adjustment will be made.

8.7.   METER READING AND BILLING PERIOD: All charges are stated on a monthly
       basis. The term "month" for billing purposes shall mean the period
       between any two consecutive regularly scheduled meter readings. Meter
       reading schedules provide for reading meters, in accordance with their
       geographic location, as nearly as may be practicable every thirty days.
       Schedules are prepared in advance by Public Service and are available for
       inspection.

       Bi-monthly billing in place on February 6, 1987 will be completely phased
       out by September 1987, at which time all residential rates will be billed
       on a monthly basis.

8.8.   PRORATION OF MONTHLY CHARGES: For all billings for service, including
       initial bills, final bills, and bills for periods other than twenty-five
       to thirty-six days inclusive, except for temporary service accounts and
       Rate Schedules ISG, CIG, TSG-F and TSG-NF, the monthly charges will be
       prorated on the basis of one-thirtieth for each day of service, each
       month being considered as thirty days when determining the number of days
       on which prorating is based. For temporary service accounts the minimum
       period for billing purposes shall be one month.

8.9.   AVERAGED BILLS: Where Public Service is unable to read the meter, Public
       Service may estimate the amount of gas supplied and submit an averaged
       bill, so marked, for customer's acceptance. Adjustment of such customer's
       averaged use to actual use will be made after an actual meter reading is
       obtained.

8.10.  BUDGET PLAN: Customers billed under Rate Schedules RSG and GSG where gas
       service is used for residential purposes in buildings of four or fewer
       units, shall have the option of paying for their use of total service in
       equal, estimated monthly installments. The total service for a twelve
       month period will be averaged over twelve months and may be paid in
       twelve equal monthly installments. Adjustments will be made in the
       twelfth month if actual charges are more or less than the budget amount
       billed.

8.11.  BILLING OF CHARGES IN TARIFF: Unless otherwise ordered by the Board of
       Public Utilities, the charges and the classification of service set forth
       in this Tariff or in amendments hereof shall apply to the first month's
       billing of service in the regular course on and after the effective date
       set forth in such Tariff covering the use of gas service subsequent to
       the scheduled meter reading for the immediately preceding month.

8.12.  PAYMENT OF BILLS: At least 10 days time for payment shall be allowed
       after sending a bill. Bills are payable at any Customer Service Center of
       Public Service, or by mail, or to any collector or collection agency duly
       authorized by Public Service. Whenever a residential customer advises
       Public Service prior to the date of a proposed discontinuance for non-
       payment that he wishes to discuss a deferred payment agreement because he
       is presently unable to pay a total outstanding bill, Public Service will
       make a good-faith effort to allow a residential customer the opportunity
       to enter into a

Date of Issue: October 3, 1989                     Effective: September 25, 1989
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901

<PAGE>
PUBLIC SERVICE ELECTRIC AND GAS COMPANY            SECOND REVISED SHEET NO. 15
                                                            SUPERSEDING
P.U.C.N.J. NO.10 GAS                               FIRST REVISED SHEET NO. 15

                         STANDARD TERMS AND CONDITIONS

                                  (Continued)

          reasonable deferred payment agreement, either prior to or after the
          occurrence of discontinuance of service for non-payment. A residential
          electric or gas customer is not required to pay, as a down payment,
          more than 25% of the total outstanding bill due at the time of the
          agreement. Such agreements which extend more than 2 months must be in
          writing and shall provide that a customer who is presently unable to
          pay an outstanding debt for Public Service services may make
          reasonable periodic payments until the debt is liquidated, while
          continuing payment for current bills. While a deferred payment
          agreement for each separate service need not be entered into more than
          once a year, Public Service may offer more than one such agreement in
          a year. If the customer defaults on any of the terms of the agreement,
          Public Service may discontinue service after providing the customer
          with a notice of discontinuance.

          In the case of a residential customer who receives more than one
          utility service from Public Service and has entered into a separate
          agreement for each separate service, default on one such agreement
          shall constitute grounds for discontinuance of only that service.

    8.13. LATE PAYMENT CHARGE: A late payment charge at the rate of 1.416% per
          monthly billing period shall be applied to the accounts of customers
          taking service under all rate schedules contained herein except for
          Rate Schedules RSG and SLG. Service to a body politic will not be
          subject to a late payment charge. The charge will be applied to all
          amounts billed including accounts payable and unpaid finance charge
          amounts applied to previous bills, which are not received by Public
          Service within 45 days following the date specified on the bill. The
          amount of the finance charge to be added to the unpaid balance shall
          be calculated by multiplying the unpaid balance by the late payment
          charge rate. When payment is received by the Company from a customer
          who has an unpaid balance which includes charges for late payment, the
          payment shall be applied first to such charges and then to the
          remainder of the unpaid balance.

    8.14. RETURNED CHECK CHARGE: A $10.00 charge shall be applied to the
          accounts of customers who have checks to Public Service returned
          unhonored by the bank.

   9. LEAKAGE

      Customer shall immediately give notice to Public Service at its office of 
      any escape of gas in or about the customer's premises.

  10. ACCESS TO CUSTOMER'S PREMISES

      Public Service shall have the right of reasonable access to customer's
      premises, and to all property furnished by Public Service, at all
      reasonable times for the purpose of inspection of customer's premises
      incident to the rendering of service, reading meters or inspecting,
      testing, or repairing its facilities used in connection with supplying the
      service, or for the removal of its property. The customer shall obtain, or
      cause to be obtained, all permits needed by Public Service for access to
      its facilities. Access to facilities of Public Service shall not be given
      except to authorized employees of Public Service or duly authorized
      governmental officials.

  11. DISCONTINUANCE OF SERVICE

   11.1.  BY PUBLIC SERVICE: Public Service, upon reasonable notice, when it can
          be reasonably given, may suspend or curtail or discontinue service for
          the following reasons: (1) for the purpose of making permanent or
          temporary repairs, changes or improvements in any part of its system;
          (2) for compliance in good faith with any governmental order or
          directive notwithstanding such order or directive subsequently may be
          held to be invalid; (3) for any of the following acts or omissions on
          the part of the customer: (a) non-payment of a valid bill due for
          service furnished at a present or previous location. However, for
          business service shall not be a reason for discontinuance residence
          service except in cases of diversion of service pursuant to N.J.A.C.
          14:3-7.16; (b) tampering with any facility of Public Service; (c)
          fraudulent representation in relation to the use of service; (d)
          customer moving from the premises, unless the customer requests that
          service be continued; (e) providing service to others without approval
          of Public Service except as permitted under Section 8.4 Metering on
          Customer's Premises; (f) failure to make or increase an advance

   Date of Issue: October 3, 1989                 Effective : September 25, 1989
   Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President-Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              SECOND REVISED SHEET NO. 16
                                                            SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                 FIRST REVISED SHEET NO. 16

                         STANDARD TERMS AND CONDITIONS

                                  (Continued)

     payment or deposit as provided for in these Standard Terms and Conditions;
     (g) refusal to contract for service where such contract is required; (h)
     connecting and operating equipment in such manner as to produce disturbing
     effects on the service of Public Service or other customers; (i) failure of
     the customer to comply with any of these Standard Terms and Conditions; (j)
     where the condition of the customer's installation presents a hazard to
     life or property; or (k) failure of customer to repair any faulty facility
     of the customer; (4) for the refusal of reasonable access to customer's
     premises for necessary purposes in connection with rendering of service,
     including meter installation, reading or testing, or the maintenance or
     removal of the property of Public Service.

     Public Service may not discontinue service for non-payment of bills unless
     it gives the customer at least 7 days written notice of its intentions to
     discontinue. The notice of discontinuance shall not be served until the
     expiration of the 10-day period. However, in case of fraud, illegal use, or
     when it is clearly indicated that the customer is preparing to leave,
     immediate payment of accounts may be required.

     Public Service may not discontinue service because of non-payment of bills
     in cases where a charge is in dispute, provided that the undisputed charges
     are paid and a request is made to the Board for investigation of the
     disputed charge. In such cases, Public Service shall notify the customer
     that unless steps are taken to invoke formal or informal Board action
     within 5 days, service will be discontinued for non-payment.

     Public Service may not discontinue residential service on Saturday, Sunday
     or a holiday on which Public Service Customer Service Centers are closed or
     after 1:00 P.M, of the business day prior to a week-end or such holiday for
     non-payment.

     Discontinuance of residential service for non-payment is prohibited if a
     medical emergency exists within the premises which would be aggravated by
     the discontinuance of service and the customer gives reasonable proof of
     inability to pay. Discontinuance shall be prohibited for a period of up to
     2 months when a customer submits a physician's statement in writing to
     Public Service as to the existence of the emergency, its nature and
     probable duration, and that termination of service will aggravate the
     medical emergency. Recertification by the physician as to continuance of
     the medical emergency shall be submitted to Public Service after 30 days.
     However, at the end of such period of emergency, the customer shall still
     remain liable for payment of service(s) rendered, subject to the provisions
     of N.J.A.C. 14:3-7.13.

          1.  The Board may extend the 60-day period for good cause.
          2.  Public Service may in its discretion, delay discontinuance of
              residential service for non-payment prior to submission of the
              physician's statement required by this subsection when a medical
              emergency is known to exist.
     Public Service shall make every reasonable effort to determine when a
     landlord-tenant relationship exists at residential premises being served.
     If such a relationship is known to exist, service will be shut off unless
     Public Service has posted a notice of discontinuance in common areas of
     multiple-family premises and has given individual notice to occupants of a
     single-family and two-family premises and has offered the tenants continued
     service to be billed to the tenants, unless Public Service demonstrates
     that such billing is not feasible. The continuation of service to a tenant
     shall not be conditioned upon payment by the tenant of any outstanding
     bills due upon the account or any other person. Public Service shall not be
     held to the requirements of this Tariff section if the existence of a
     landlord-tenant relationship could not be reasonably ascertained.

11.2.At Customer's Request: A customer wishing to discontinue service must give
     notice as provided in the applicable rate schedule. Where such notice is
     not received by Public Service, customer shall be liable for service until
     final reading of the meter is taken. Notice to discontinue service will not
     relieve a customer from any minimum or guaranteed payment under any
     contract or rate schedule.

12.RECONNECTION CHARGE

   A reconnection charge of $15.00 will be made for restoration of service when
   service has been suspended or discontinued for non-payment of any bill due.


Date of Issue: October 3, 1989                     Effective: September 25, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President-Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
        Filed pursuant to Order of the Board of Public Utilities, dated
                            in Docket No. GX8509901

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               FIRST REVISED SHEET NO. 17
                                                              SUPERSEDING
P.U.C.N.J. No. 10 GAS                                    ORIGINAL SHEET NO. 17 

                         STANDARD TERMS AND CONDITIONS

                                  (Continued)

13.  SERVICE LIMITATIONS

  13.1.   CONTINUITY OF SERVICE:  Public Service will use reasonable diligence
          to provide a regular and uninterrupted supply of service; but, should
          the supply be suspended, curtailed, or discontinued by Public Service
          for any of the reasons set forth in Section 11 of these Standard Terms
          and Conditions, or should the supply of service be interrupted,
          curtailed, deficient, defective, or fail, by reason of any act of God,
          accident, strike, legal process, governmental interference, or by
          reason of compliance in good faith with any governmental order of
          directive, notwithstanding such order or directive subsequently may be
          held to be invalid, Public Service shall not be liable for any loss or
          damage, direct or consequential, resulting from any such suspension,
          discontinuance, interruption, curtailment, deficiency, defect, or
          failure.

  13.2.   EMERGENCIES:  Public Service may curtail or interrupt service to any
          customer or customers in the event of an emergency threatening the
          integrity of its system or the systems to which it is directly or
          indirectly connected if, in its sole judgment, such action will
          prevent or alleviate the emergency condition.

  13.3.   UNUSUAL CONDITIONS:  Public Service may place limitations on the
          amount and character of gas service it will supply or transport and
          may refuse such service to new customers, to existing customers for
          additional load, or to customers whose service agreements have expired
          if Public Service is or will be unable to obtain or does not have
          assured the necessary production raw materials equipment and
          facilities to supply such gas or transportation service. In the case
          of transportation service, if Public Service, at its sole discretion,
          determines that such service would not be consistent with the best
          interest of its customers served under all rate schedules contained
          herein such service may be denied to applicants for such service.

14.  TERMINATION, CHANGE, OR MODIFICATION OF PROVISIONS OF TARIFF

     This Tariff is subject to the lawful orders of the Board of Public
     Utilities of the State of New Jersey.

     Public Service may at any time and in any manner permitted by law, and the
     applicable rules and regulations of the Board of Public Utilities of the
     State of New Jersey, terminate, or change or modify by revision, amendment,
     supplement, or otherwise, this Tariff or any part hereof, or any revision
     or amendment hereof or supplement hereto.


Date of Issue:  October 3, 1989                   Effective:  September 25, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                            in Docket No. GX8509901
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY          FIRST REVISED SHEET No.18
                                                        SUPERSEDING
P.U.C.N.J. No.10 GAS                               ORIGINAL SHEET No.18

                            RESERVED FOR FUTURE USE



Date of Issue: October 3, 1989                     Effective: September 25, 1989
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
         Filed pursuant to Order of Board of Public Utilities, dated 
                            in Docket No. GX8509901
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             FOURTH REVISED SHEET NO. 19
                                                            SUPERSEDING
P.U.C.N.J. NO. 10 GAS                               THIRD REVISED SHEET NO. 19

                           RAW MATERIALS ADJUSTMENT

Average cost per million Btu of gas sent out during the 
     
     ten months ended September 30, 1990 ......................... 303.074 cents

Base cost per million Btu ........................................ 330.000 cents

Increase above or (decrease) below base cost ..................... (26.926)cents

Number of 0.1 cents increases above or (below) base cost ......... (269.26)



                                                                  RATE SCHEDULES
                                                               
                                                               RSG, GSG, AND LVG

Adjustment factor per therm for each 0.1 cent              

     increase above or decrease below base cost ................. 0.01207 cents

Amount per therm of Raw Materials Adjustment charge ............. (3.2500) cents


Date of Issue: December 27, 1989                     Effective: December 6, 1989
  Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
         Filed pursuant to Order of Board of Public Utilities, dated 
                           in Docket No. GR89060622



<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             FIFTH REVISED SHEET NO. 19
                                                            SUPERSEDING
P.U.C.N.J. No. 10 GAS                               FOURTH REVISED SHEET NO. 19

                           LEVELIZED GAS ADJUSTMENT

Average cost per million Btu of gas sent out during the 
     
     twelve months ended September 30, 1991 ...................... 321.715 cents

Base cost per million Btu ........................................ 330.000 cents

Increase above or (decrease) below base cost .....................  (8.285)cents

Number of 0.1 cents increases above or (below) base cost .........  (82.85)



                                                                  RATE SCHEDULES

                                                               RSG, GSG, AND LVG

Adjustment factor per therm for each 0.1 cents                 

     increase above or decrease below base cost ................. 0.01207 cents

Amount per therm of Levelized Gas Adjustment charge ............. (1.0000) cents




Date of Issue: November 5, 1990                      Effective: November 1, 1990
  Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
    Filed pursuant to Order of Board of Public Utilities, dated October 31, 1990
                           in Docket No. GR90070649J


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY      FIFTY-FOURTH REVISED SHEET NO. 19A
                                                         SUPERSEDING
P.U.C.N.J. NO. 10 GAS                         FIFTY-THIRD REVISED SHEET NO. 19A


                               COMMODITY CHARGE

                   APPLICABLE TO INTERRUPTIBLE SCHEDULE ISG 

COMMODITY CHARGE:
     Per therm of gas used for customers with alternate fuel oil capability of:
     No. 2 oil..................................................  46.5700 cents
                                                                  =======
     No. 4 oil..................................................  38.6300 cents
                                                                  =======
     No. 6 oil..................................................  30.8800 cents
                                                                  =======
     Higher than 1.5% Sulfur No. 6 oil..........................  26.1700 cents
                                                                  =======
     (Based upon the Marketability Price of Alternate Fuel; price 
     not to fall below the floor price.)

ISG FLOOR PRICE:
     Estimated Average Commodity cost per therm of gas received 
     in the month of April 1991.................................. 18.1100 cents

     ADJUSTED FOR:
          . Losses at 1.5 percent................................ 18.3858 cents
          . A contribution of 1 cent............................. 19.3858 cents
          . GRI Surcharge at .142 cents.......................... 19.5278 cents
          . Gross Receipts taxes at 13.7496 percent and BPU 
            assessment at .1650 percent.......................... 22.6842 cents
                                                                  =======


MARKETABILITY PRICE OF ALTERNATE FUEL:
     No. 2 oil................................................... 46.5700 cents
                                                                  =======
     No. 4 oil................................................... 38.6300 cents
                                                                  =======
     0.3% Sulfur No. 6 oil....................................... 30.8800 cents
                                                                  =======
     Higher than 1.5% Sulfur No. 6 oil........................... 26.1700 cents
                                                                  =======

TSG FLOOR PRICE:
     For those TSG customers provided sales service, the Commodity Charge, by
     alternate fuel type, will be the higher of the applicable ISG price or the
     TSG Floor Price.

     Estimated Incremental Commodity cost per therm of gas received in the
     month of April 1991......................................... 14.1800 cents

     ADJUSTED FOR:
          . Losses at 1.5 percent................................ 14.3959 cents
          . A contribution of 3 to 7 cents....................... 21.3959 cents
          . GRI Surcharge ar .142 cents.......................... 21.5379 cents
          . Gross Receipts taxes at 13.7496 percent and BPU 
            assessment at .1650 percent.......................... 25.0192 cents
                                                                  =======

Date of Issue: March 25,1991                           Effective: April 1, 1991
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations  
                   80 Park Plaza, Newark, New Jersey 07101 
   Filed pursuant to Order of Board of Public Utilities, dated March 1, 1991
                           in Docket No. GR90080867
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY      FIFTY-FOURTH REVISED SHEET NO. 19C
                                                        SUPERSEDING    
P.U.C.N.J. No.10 GAS                         FIFTY-THIRD REVISED SHEET NO. 19C

                               COMMODITY CHARGE

             APPLICABLE TO COGENERATION INTERRUPTIBLE SCHEDULE CIG

                                                                      Special 
                                                                     Provision 
                                                       All Other        (r)   
                                                       ---------     --------- 

COMMODITY CHARGE:

   Per therm of gas used .............................  21.5278*      19.5278*  
   Estimated Average Commodity cost per therm of 
   gas received in the month of April 1991 ...........  18.1100*      18.1100*


ADJUSTED FOR: 

    . Losses at 1.5 percent ..........................  18.3858*        ---
    . A contribution of 3 cents ......................  21.3858*        ---
    . GRI Surcharge at .142 cents ....................  21.5278*        ---


ADJUSTED FOR:

    . Losses at 1.5 percent ..........................     ---        18.3858* 
    . A Contribution of 1 cent .......................     ---        19.3858*
    . GRI Surcharge at .142 cents ....................     ---        19.5278* 



Date of Issue: March 25, 1991                          Effective: April 1, 1991 
  Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101 
  Filed pursuant to Order of Board of Public Utilities, dated December 6, 1989
                            in Docket No. GR89060622

<PAGE>
 
 PUBLIC SERVICE ELECTRIC AND GAS COMPANY              FIFTH REVISED SHEET NO.20
                                                               SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                 FOURTH REVISED SHEET NO.20

                               RATE SCHEDULE RSG

                              RESIDENTIAL SERVICE


APPLICABLE TO USE OF SERVICE FOR:

     Residential purposes.

CHARACTER OF SERVICE:

     Continuous.

RATE:

     SERVICE CHARGE:
     $6.00 in each month.

     COMMODITY CHARGE:
     59.311 cents per therm.

     LEVELIZED GAS ADJUSTMENT:
     A charge or credit will be made when the estimated October through
     September twelve-month net average cost to Public Service of gas purchased
     and produced is 0.1 cents per million Btu of gas sent out above or below
     330.0 cents per million Btu of gas sent out. Immediately prior to October
     of each year, the estimated average cost will be determined for the
     succeeding twelve-month period. This estimated average cost will be
     adjusted for any under - or over-recovery together with applicable interest
     thereon, which may have occurred during the operation of the Company's
     previously approved clause. Interest shall be determined monthly on the
     cumulative under - or over-recovery average balance for the month utilizing
     the Company's allowed overall rate of return. The net charge or net credit
     will be the adjusted differential cost above or below 330.0 cents per
     million Btu of gas sent out multiplied by 0.01207 cents per therm per 0.1
     cents variation to reflect applicable losses, and taxes related to revenue
     from the sales of gas. Any net charge or net credit will apply to all
     therms billed each month of the succeeding twelve-month net charge or net
     credit will apply to all therms billed each month of the succeeding twelve-
     month period. In the event that a major change in the average cost occurs
     during the twelve-month period, a revised estimated average cost will be
     calculated and applied for the remainder of the period in accordance with
     the above.

     OTHER CHARGES:
     See SPECIAL PROVISIONS (b) Off-Peak Use.

MINIMUM CHARGE:

     The monthly minimum charge shall be $6.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of
     hundred cubic feet used by the "therms multiplier" expressed in therms per
     hundred cubic feet which appears on every bill.

TERMS OF PAYMENT: 

     Bills are due on presentation.

TERM:

     Customer may discontinue service upon notice.

Date of Issue: December 14, 1990                     Effective: January 1, 1991
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President-- Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated August 29, 1990
                           in Docket No. ER85121163


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              
                                                     
P.U.C.N.J. No. 10 GAS                                    ORIGINAL SHEET NO. 21

                               RATE SCHEDULE RSG

                              RESIDENTIAL SERVICE
                                  (Continued)

SPECIAL PROVISIONS:

(a)  This rate schedule is available when all continuous service is measured by 
     one meter:

          (a-1)  In individual residences and appurtenant outbuildings;

          (a-2)  In residential premises where customer's use of gas service for
          purposes other than residential is incidental to his residential use:

          (a-3)  For rooming or boarding houses where the number of rented rooms
          does not exceed twice the number of bedrooms occupied by the customer;

          (a-4)  In individual flats or apartments in multiple-family buildings;

          (a-5)  In multiple-family buildings of two or more individual flats or
          apartments where gas service is furnished to the tenants or occupants
          of the flats or apartments by the owner without a specific charge for
          such service; and, where Special Provision (b) is applicable, the
          basic factors stated therein shall be multiplied by the number of
          individual flats or apartments, whether occupied or not.

(b)  Off-Peak Use:  Where gas service is used for central air-conditioning 
     equipment having a rated capacity of not less than two tons of
     refrigeration the Commodity Charge for the therms used for purposes in
     excess of 50 therms in any month during the Off-Peak period shall be 40.568
     cents per therm.

     The Off-Peak period shall commence and end with the regularly scheduled
     meter readings in the months of April and October, respectively, but Public
     Service may change such period depending upon load conditions on its
     system.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on
     Sheets Nos. 6 to 18, inclusive of this Tariff.

Date of Issue:  November 14, 1986                   Effective:  October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY                FIFTH REVISED SHEET NO.22
                                                              SUPERSEDING
P.U.C.N.J. NO.10 GAS                                  FOURTH REVISED SHEET NO.22


                               RATE SCHEDULE GSG

                                GENERAL SERVICE


APPLICABLE TO USE OF SERVICE FOR:

     General purposes.

CHARACTER OF SERVICE:

     Continuous.

RATE:

     SERVICE CHARGE:
     $6.00 in each month.

     COMMODITY CHARGE:
     62.296 cents per therm.

     LEVELIZED GAS ADJUSTMENT:
     A charge or credit will be made when the estimated October through
     September twelve-month net average cost to Public Service of gas purchased
     and produced is 0.1 cents per million Btu of gas sent out above or below
     330.0 cents per million Btu of gas sent out. Immediately prior to October
     of each year, the estimated average cost will be determined for the
     succeeding twelve-month period. This estimated average cost will be
     adjusted for any under- or over-recovery together with applicable interest
     thereon, which may have occurred during the operation of the Company's
     previously approved clause. Interest shall be determined monthly on the
     cumulative under- or over-recovery average balance for the month utilizing
     the Company's allowed overall rate of return. The net charge or net credit
     will be the adjusted differential cost above or below 330.0 cents per
     million Btu of gas sent out multiplied by 0.01207 cents per therm per 0.1
     cents variation to reflect applicable losses, and taxes related to revenue
     from the sales of gas. Any net charge or net credit will apply to all
     therms billed each month of the succeeding twelve-month period. In the
     event that a major change in the average cost occurs during the twelve-
     month period, a revised estimated average cost will be calculated and
     applied for the remainder of the period in accordance with the above.

     OTHER CHARGES:
     See Special Provisions (a) Off-Peak Use and (c) Cogeneration Use.

MINIMUM CHARGE:

     The monthly minimum charge shall be $6.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of
     hundred cubic feet used by the "therms multiplier" expressed in therms per
     hundred cubic feet which appears on every bill.

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of
     the Standard Terms and Conditions. Service to a body politic will not be
     subject to a late payment charge.

TERM:

     One year and thereafter until terminated by five days' notice.

Date of Issue: December 14, 1990                      Effective: January 1, 1991
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated August 29, 1990
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              
                                                     
P.U.C.N.J. No. 10 GAS                                    ORIGINAL SHEET NO. 22A

                               RATE SCHEDULE GSG

                                GENERAL SERVICE
                                  (Continued) 

SPECIAL PROVISIONS:

(a)  OFF-PEAK USE:  Where gas service in commercial and industrial
     establishments is used for cooling for dehumidification and supplied
     through a separate meter, the Commodity Charge for the therm used in the
     Off-Peak period shall be 40.568 cents per therm.

     The Off-Peak period shall commence and end with the regularly scheduled
     meter readings in the months of April and October, respectively, but Public
     Service may change such period depending upon load conditions on its
     system.

(b)  RESALE:  Service under this rate schedule is not available for resale.

(c)  COGENERATION USE:  Applicable to separately metered service for the
     sequential production of electrical energy and useful thermal energy from
     the same fuel source by a Qualifying Facility, as defined in Section 201 of
     the Public Utilities Regulatory Policies Act of 1978 whose cogeneration
     equipment meets the efficiency standards set forth in Chapter 18 of the
     Code of Federal Regulations, Sections 292.205 (a) and (b). Customer must
     document that qualifying status has been granted by the Federal Energy
     Regulatory Commission.

     Service to a qualifying cogeneration facility as set forth above is exempt
     from Gross Receipts and Franchise taxes.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on
     Sheets Nos. 6 to 18, inclusive of this Tariff.

Date of Issue:  November 14, 1986                   Effective:  October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               FIFTH REVISED SHEET NO. 23
                                                             SUPERSEDING
P.U.C.N.J. No. 10 GAS                                FOURTH REVISED SHEET NO. 23

                               RATE SCHEDULE LVG

                             LARGE VOLUME SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     General purposes.

CHARACTER OF SERVICE:

     Continuous.

RATE:
     SERVICE CHARGE:
     $50.00 in each month.

     COMMODITY CHARGE FOR THE FIRST 1,000 THERMS:
     57.896 cents per therm for the first................1,000 therms used in 
     each month

     COMMODITY CHARGE IN EXCESS OF 1,000 THERMS IN THE MONTHS OF MAY THROUGH 
     OCTOBER:
     50.568 cents per therm for the next...................4,000 therms used in 
     each month
     45.568 cents per therm in excess of...................5,000 therms used in 
     each month

     COMMODITY CHARGE IN EXCESS OF 1,000 THERMS IN THE MONTHS OF NOVEMBER 
     THROUGH APRIL:
     54.935 cents per therm in excess of.....................1,000 therms used 
     in each month

     LEVELIZED GAS ADJUSTMENT:
     A charge or credit will be made when the estimated October through
     September twelve-month net average cost to Public Service of gas purchased
     and produced is 0.1 cents per million Btu of gas sent out above or below
     330.0 cents per million Btu of gas sent out. Immediately prior to October
     of each year, the estimated average cost will be determined for the
     succeeding twelve-month period. This estimated average cost will be
     adjusted for any under-or over-recovery together with applicable interest
     thereon, which may have occurred during the operation of the Company's
     previously approved clause. Interest shall be determined monthly on the
     cumulative under-or over-recovery average balance for the month utilizing
     the Company's allowed overall rate of return. The net charge or net credit
     will be the adjusted differential cost above or below 330.0 cents per
     million Btu of gas sent out multiplied by 0.01207 cents per therm per 0.1
     cents variation to reflect applicable losses, and taxes related to revenue
     from the sales of gas. Any net charge or net credit will apply to all
     therms billed each month of the succeeding twelve-month period. In the
     event that a major change in the average cost occurs during the twelve-
     month period, a revised estimated average cost will be calculated and
     applied for the remainder of the period in accordance with the above.

     OTHER CHARGES:
     See Special Provisions (a) Off-Peak Use and (c) Cogeneration Use.

MINIMUM CHARGE:

     The monthly minimum charge shall be $50.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of 
     hundred cubic feet used by the "therms multiplier" expressed in therms per 
     hundred cubic feet which appears on every bill.


Date of Issue:  December 14, 1990                    Effective:  January 1, 1991
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated August 29, 1990
                           in Docket No. ER85121163



<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                     ORIGINAL SHEET NO. 23A

                               RATE SCHEDULE LVG

                             LARGE VOLUME SERVICE
                                  (Continued)

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of the
     Standard Terms and Conditions. Service to a body politic will not be
     subject to a late payment charge.

TERM:

     One year and thereafter until terminated by five days' notice.

SPECIAL PROVISIONS:

(a)  OFF-PEAK USE: Where separately metered gas service (1) is used for building
     cooling or dehumidification or (2) is to boilers, used in whole or in part
     to supply the requirements of absorption air-conditioning equipment of 100
     tons or more nominal capacity, the rate during the off-peak period shall be
     40.568 cents per therm. However, such off-peak rate shall not be applicable
     until the first 500 therms have been billed at the first block of the
     Commodity Charge.

     The Off-Peak period shall commence and end with the regularly scheduled
     meter readings in the months of April and October, respectively, but Public
     Service may change such period depending upon load conditions on its
     system.

(b)  RESALE: Service under this rate schedule is not available for resale.

(c)  COGENERATION USE: Applicable to separately metered service for the
     sequential production of electrical energy and useful thermal energy from
     the same fuel source by a Qualifying Facility, as defined in Section 201 of
     the Public Utilities Regulatory Policies Act of 1978 whose cogeneration
     equipment meets the efficiency standards set forth in Chapter 18 of the
     Code of Federal Regulations, Sections 292.205 (a) and (b). Customer must
     document that qualifying status has been granted by the Federal Energy
     Regulatory Commission.

     Service to a qualifying cogeneration facility as set forth above is exempt 
     from Gross Receipts and Franchise taxes.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on 
     Sheets Nos. 6 to 18, inclusive of this Tariff.

Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             FOURTH REVISED SHEET NO. 24
                                                            SUPERSEDING
P.U.C.N.J. No. 10 GAS                               THIRD REVISED SHEET NO. 24

                               RATE SCHEDULE SLG

                            STREET LIGHTING SERVICE

This rate schedule is in the process of elimination and is limited to street 
lighting installations served hereunder in the month of April 1980, and only for
the specific premises and class of service served hereunder on such date.

APPLICABLE TO USE OF SERVICE FOR:

     Street lighting to a body politic.

CHARACTER OF SERVICE:

     Limited period from dusk to dawn.

RATE:

     MONTHLY CHARGE PER UNIT:
     Single-mantle lamps.......$11.50
     Double-mantle lamps.......$12.97
     Triple-mantle lamps....... 18.51 on posts installed prior to October 30,
        1963
     Triple-mantle lamps....... 21.43 on posts installed on and after October 
        30, 1963

     ALLOWANCE FOR LAMP OUTAGES:
     The Monthly Charge Per Unit reflects an outage allowance based on normal 
     and abnormal operating conditions. No further allowance will be made.

MINIMUM CHARGE:

     None.

TERMS OF PAYMENT:

     Bills are due on presentation.

TERM:

     Five years; written contract required.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on
     Sheets Nos. 6 to 18, inclusive, of this Tariff.



Date of Issue: December 14, 1990                     Effective: January 1, 1991
  Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
     Filed pursuant to Order of Board of Public Utilities, dated August 29, 1990
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                    ORIGINAL SHEET No. 24
                                                         ORIGINAL SHEET No. 24


                        THIS SHEET PURPOSELY LEFT BLANK




Date of Issue: November 14, 1986                   Effective: October 31, 1986
  Issued by FREDERICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             THIRD REVISED SHEET NO. 27
                                                            SUPERSEDING
P.U.C.N.J. NO. 10 GAS                              SECOND REVISED SHEET NO. 27


                               RATE SCHEDULE ISG

                             INTERRUPTIBLE SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     General purposes where the maximum requirement for interruptible gas is not
     less than 150 therms per hour.

CHARACTER OF SERVICE:

     Interruptible.

RATE:

     SERVICE CHARGE:
     $100.00 in each month.

     COMMODITY CHARGE:
     The monthly rate per therm of gas used will be set equal to the estimated
     price of the customer's alternate fuel capability. The prices for No. 2,
     No. 4, 0.3 percent No. 6 oil and higher than 1.5 percent sulphur No. 6
     oil alternate fuel capability categories will be based on the current
     marketability of this gas with respect to alternate fuel sources available
     to Rate Schedule ISG customers. These prices shall be considered to include
     the effect of losses and taxes related to revenues from the sales of this
     gas. These prices will be utilized if they are above the floor price
     defined as follows: the floor prices is the average commodity cost of gas
     received by Public Service adjusted to include: (a) the effect of losses
     estimated to be 1.5 percent, (b) a fixed minimum contribution of 1 cent,
     (c) GRI surcharge, (d) taxes related to revenue from the sales of gas, and
     (e) BPU assessment.

     The applicable rate per therm for each alternate fuel oil shall be the 
     applicable oil price, except that such rate shall not fall below the floor
     price.

     All recoveries resulting from the sales of gas under this rate schedule
     which exceed the cost of supplying such gas will be used to reduce the
     monthly cost of gas supplied to firm customers.

     OTHER CHARGES:
     See Special Provisions (b), (g) and (o).


MINIMUM CHARGE:

     The monthly minimum charge shall be $100.00.


DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of
     hundred cubic feet used by the "therms multiplier" expressed in therms per
     hundred cubic feet which appears on every bill.

     The "therms multiplier" shall be on the basis of the actual heating value 
     of the gas used.

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of
     the Standard Terms and Conditions. Service to a body politic will not be
     subject to a late payment charge.




Date of Issue: February 25, 1991                       Effective: March 1, 1991
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
   Filed pursuant to Order of Board of Public Utilities, dated March 1, 1991
                           in Docket No. GR90080867

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. NO. 10 GAS                                      ORIGINAL SHEET NO. 28

                               RATE SCHEDULE ISG

                            INTERRUPTIBLE SERVICE 
                                  (Continued)


TERM:

     One year from the commencement date specified in the Application for
     Interruptible Gas Service required by Special Provision (a). The term may
     be extended by agreement between customer and Public Service.

SPECIAL PROVISIONS:

     Interruptible service will be furnished, when and where available, under 
     the following conditions:

     (a)  Customer will be required to sign an Application for interruptible Gas
          Service and service will be restricted to the maximum annual and
          hourly requirements, and the location and equipment specified.
          Attached to the Application for Interruptible Gas Service will be a
          signed affidavit certifying the specific grade of fuel oil (or oils)
          that can physically and legally be utilized by the installation being
          served. The affidavit shall include the percentage of operation which
          can physically and legally be served by each alternate fuel. The
          customer will submit, within 30 days of change in operations, a new
          affidavit to Public Service when such a change effects its alternate
          fuel capability, Public Service reserves the right to inspect the
          customer's operation as to alternate fuel capability. Upon request by
          customer, Public Service may deliver available volumes of gas in
          excess of the maximum hourly requirements for limited periods. Such
          deliveries shall not be deemed to constitute a change in the
          requirements specified in the application.

     (b)  No Service Charge shall apply to customers receiving service under
          this Special Provision who were OPG customers before October 31, 1986.
          The monthly Minimum Charge hereinbefore stated shall apply to former
          OPG customers in each of the months of May through November.

          Service to former OPG customers during the months of January, February
          and March will be available for pilots at a Commodity of 60.0 cents
          per therm. If service is used during such months for any other
          purpose, the Commodity Charge for such service shall be ten times the
          applicable Commodity Charge for Rate Schedule ISG. However, Public
          Service has no obligation to supply gas to former OPG customers during
          the months of January, February and March except for pilots, and may
          discontinue deliveries of gas to customer for other purposes. Special
          Provisions (d), (e), and (g) are not applicable to former OPG
          customers.

     (c)  Customer may be required to make a payment toward the investment in
          facilities which Public Service installs to provide service under this
          rate schedule when such investment exceeds an amount equal to 10% of
          the estimated first year's revenue from such service. The payment
          required will be a contribution equal to the excess amount, payable on
          the date Public Service accepts the Application for Interruptible Gas
          Service. The making of a payment shall not give the customer any
          interest in the facilities, the ownership being vested exclusively in
          Public Service.

     (d)  Customer has installed and maintains complete and adequate standby
          equipment and fuel supply for operation with another fuel when the gas
          supply is interrupted.

     (e)  Upon advance notice of eight hours or more, from any hour of any day
          given to customer Public Service by telephone, telegram or otherwise,
          customer shall discontinue the use of gas until further notice;
          customer shall designate personnel who will accept such notification
          at any hour of any day.


Date of issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J N0. 10 GAS                                      ORIGINAL SHEET NO. 28A


                               RATE SCHEDULE ISG

                             INTERRUPTIBLE SERVICE
                                  (Continued)

(f)  The order of interruption shall be as follows: No. 6 oil customers and then
     No. 4 oil and No. 2 oil customers.

(g)  If customer does not discontinue the use of gas after notification
     pursuant to Special Provision (e), the Commodity Charge shall be
     60.0 cents per therm for an amount equal to one hour's maximum requirement.
     Use of this amount shall be limited to a use rate per hour not greater than
     5% of customer's maximum hourly requirement.

     The charge for all additional gas used shall be ten times the applicable
     Rate Schedule ISG Commodity Charge.
     
     Except for pilots, however, Public Service has no obligation to supply gas
     at any time following notice pursuant to Special Provision (e) and may
     discontinue completely all other deliveries of gas to customer during the
     period of interruption.

     If a customer utilizes more than one type of alternate fuel, the rate per
     therm to such customer shall be determined by taking a weighted average of
     the prices determined above. Such weighting will be based upon the
     alternate fuel percentage stated in customer's affidavit. Propane shall be
     considered to be equivalent to No. 2 oil for purposes of setting the
     appropriate rates under this Tariff.

(h)  Metering shall include a recording device, furnished by Public Service.
     Customer shall furnish an electrical supply for the operation of the
     recording device and may be required to supply dedicated telephone line.

(i)  Upon request by Public Service on any day, customer shall furnish an
     estimate of the amount of gas to be taken under this rate schedule during
     the next 24-hour period.

(j)  Service supplied under this rate schedule shall be separately metered and
     shall not be combined with use under any other rate schedule for billing
     purposes.

(k)  Service will not be supplied under this rate schedule and any other gas
     rate schedule for the same process or operation at the same location.

(l)  Public Service shall not be liable in any way for any failure in whole or
     in part, temporary, or permanent, to deliver gas under this rate schedule.

(m)  When customer is temporarily prevented from receiving service during any
     month by reason of any act of God, accident, strike, or work stoppage,
     legal process, governmental interference or compliance with any
     governmental order, Public Service at its discretion may, upon customer's
     written request, prorate the Minimum Charge to the number of full days
     customer is able to receive service.

(n)  Service under this rate schedule is not available for resale.

(o)  Cogeneration use is applicable to separately metered service for the
     sequential production of electrical energy and useful thermal energy from
     the same fuel source by a Qualifying Facility as defined in Section 201 of
     the Public Utilities Regulatory Policies Act of 1978 whose cogeneration
     equipment meets the efficiency standards set forth in Chapter 18 of the
     Code of Federal Regulations. Sections 292.205 (a) and (b). Customer must
     document that qualifying status has been granted by the Federal Energy
     Regulatory Commission.

     Service to a qualifying cogeneration facility as set forth above is exempt 
     from Gross Receipts and Franchise taxes.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on
     Sheets Nos. 6 to 18, inclusive of this Tariff, except Section 3. Extension
     of Distribution Mains, Section 5.2. Service Connection Charges, Section
     7.6. Appliance Adjustments and Section 8.8. Proration of Monthly Charges.


Date of Issue: November 14, 1986                    Effective: October 31, 1986 
  Issued By FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities dated October 31 1986
                           In Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                ORIGINAL SHEET No. 29
                                                     ORIGINAL SHEET No. 30
                                                     ORIGINAL SHEET No. 31
                                                     ORIGINAL SHEET No. 32

                       THIS SHEET PURPOSELY LEFT BLANK  


Date of Issue: November 14. 1986                   Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      ORIGINAL SHEET NO. 33


                             RATE SCHEDULE ISG-PP

                     INTERRUPTIBLE PARITY PRICING SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     Rate Schedule ISG service considered non-exempt from the incremental 
     pricing provisions of the Natural Gas Policy Act of 1978.

CHARACTER OF SERVICE:

     Interruptible.

RATE:

     COMMODITY CHARGE:

     The rate per therm of gas used will be set equal to the monthly published
     incremental ceiling price which, under Federal Incremental Pricing
     Regulations would be applicable to the non-exempt usage each affected
     interruptible customer. The rate determined above will be compared with the
     floor price defined as equaling the applicable rate per therm of Rate
     Schedule ISG.

     In the event that any of the rates determined in accordance with this
     Tariff are below this floor price, the floor price shall be used. All net
     recoveries above the floor price as determined above which result from the
     sales of gas under this rate schedule will be used to reduce the monthly
     cost of gas supplied exempt and non-affected uses subject to the Levelized
     Raw Materials Adjustment Clause.

     Notification of changes in the price of this gas shall be filed with the
     Board of Public Utilities no later than 2 working days subsequent to the
     publication of Federally determined incremental ceiling prices. All other
     terms, conditions and provisions of Rate Schedule ISG apply.

TERMINATION:

     Parity pricing under this rate schedule shall terminate upon the effective
     date of the implementation the Federal Energy Regulatory Commission of
     regulations determining the alternate fuel price ceiling on a basis other
     than High Sulfur No. 6 Fuel Oil or upon the effective date of
     implementation by Federal Energy Regulatory Commission of regulations
     modifying the application of incremental pricing under the authority of
     Section 202 of the Natural Gas Policy Act of 1978, or immediately upon
     termination of incremental pricing under the provisions of the Natural Gas
     Policy Act of 1978, whichever occurs first. In the event of termination,
     gas service provided under this rate schedule will be subject to and priced
     in accordance with Rate Schedule ISG.

Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                            in Docket No. ER85121163
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY
P.U.C.N.J. No. 10 GAS                                ORIGINAL SHEET No. 34


                     THIS SHEET PURPOSELY LEFT BLANK     





Date of Issue: November 14, 1986                    Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
    Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                     ORIGINAL SHEET NO. 35


                             RATE SCHEDULE FSG-PP

                          FIRM PARITY PRICING SERVICE


APPLICABLE TO USE OF SERVICE FOR:

     Firm rate schedules service considered non-exempt from the incremental 
     pricing provisions of the Natural Gas Policy Act of 1978.

CHARACTER OF SERVICE:

     Continuous.

RATE:

     The following Commodity Charge will be imposed in lieu of the Commodity 
     Charges states in each firm rate schedule:

     COMMODITY CHARGE:

     The rate per therm of gas used will be set equal to the monthly published
     incremental ceiling price which, under Federal Incremental Pricing
     Regulations would be applicable to the non-exempt usage each affected firm
     customer. The rate determined above will be compared with a floor price
     defined equaling the applicable rate per therm of the applicable firm rate
     schedule.

     In the event that any of the rates determined in accordance with this
     Tariff are below this floor price, floor price shall be used. All net
     recoveries above the floor price as determined above which result from the
     sales of gas under this rate schedule will be used to reduce the monthly
     cost of gas supplied to exempt and non-affected uses subject to the
     Levelized Raw Materials Adjustment Clause.

     Notification of changes in the price of this gas shall be filed with the
     Board of Public Utilities no later than 2 working days subsequent to the
     publication of Federally determined incremental ceiling price. All other
     terms, conditions and provisions of the applicable firm rate schedules
     shall apply.

TERMINATION:

     Parity pricing under this rate schedule shall terminate upon the effective
     date of the implementation by the Federal Energy Regulatory Commission of
     regulations determining the alternate fuel price ceiling on a basis other
     than High Sulfur No. 6 Fuel Oil or upon the effective date of
     implementation by Federal Energy Regulatory Commission of regulations
     modifying the application of incremental pricing under the authority of
     Section 202 of the Natural Gas Policy Act of 1978, or immediately under
     termination of incremental pricing under the provisions of the Natural Gas
     Policy Act of 1978, whichever occurs first. In the event of termination,
     gas service provided under this rate schedule will be subject to and priced
     in accordance with the applicable firm rate schedule.




Date of Issue: November 14, 1986                     Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               THIRD REVISED SHEET NO. 36
                                                             SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                SECOND REVISED SHEET NO. 36


                               RATE SCHEDULE CIG

                      COGENERATION INTERRUPTIBLE SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     The sequential production of electrical energy and useful thermal energy
     from the same fuel source by a Qualifying Facility, as defined in Section
     201 of the Public Utility Regulatory Policies Act of 1978, whose
     cogeneration equipment was installed on or after January 1, 1983, and
     regularly meeting the efficiency standards set forth in Chapter 18 of the
     Code of Federal Regulations, Sections 292.205 (a) and (b).

CHARACTER OF SERVICE:

     Interruptible.

RATE:

     SERVICE CHARGE:
     $86.00 in each month:

     COMMODITY CHARGE:
      
     The monthly rate per therm of gas used will be set equal to the average
     commodity cost of gas received by Public Service adjusted to include: (a)
     the effect of losses estimated to be 1.5 percent, (b) a fixed contribution
     of 3 cents per therm, and (c) GRI surcharge.

     All recoveries resulting from the sales of gas under this rate schedule
     which exceed the cost of supplying such gas will be used to reduce the
     monthly cost of gas supplied to firm customers.

     OTHER CHARGES:

     See Special Provisions (e) and (r).

MINIMUM CHARGE:

     The monthly minimum charge shall be $86.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of 
     hundred cubic feet used by the "therms multiplier" expressed in therms per 
     hundred cubic feet which appears on every bill.

     The "therms multiplier" shall be on the basis of the actual heating value 
     of the gas used.

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of the
     Standard Terms and Conditions. Service to a body politic will not be
     subject to a late payment charge.

Date of Issue: December 27, 1989                     Effective: December 6, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J No. 10 GAS                                     ORIGINAL SHEET NO. 37

                               RATE SCHEDULE CIG

                      COGENERATION INTERRUPTIBLE SERVICE
                                  (Continued)

TERM:

     One year and thereafter until terminated by five days' notice.

SPECIAL PROVISIONS:

     Interruptible service will be furnished, when and where available, under 
     the following conditions:

     (a)  Public Service has available capacity to provide such service.

     (b)  Customer must certify that qualifying status has been granted by the
          Federal Energy Regulatory Commission and will be required to sign an
          Application for Cogeneration Interruptible Gas Service. Service will
          be restricted to the maximum annual and hourly requirements, and the
          location and equipment specified in the Application. Upon request by
          customer, Public Service may deliver available volumes of gas in
          excess of the maximum hourly requirement for limited periods. Such
          deliveries shall not be deemed to constitute a change in the
          requirements specified in the Application.

     (c)  Customer may be required to make a payment toward the investment in
          facilities which Public Service installs to provide service under this
          rate schedule when such investment exceeds an amount equal to 10% of
          the estimated first year's revenue from such service. The payment
          required will be a contribution equal to the excess amount, payable on
          the date Public Service accepts the Application for Cogeneration
          Interruptible Gas Service. The making of a payment shall not give the
          customer any interest in the facilities, the ownership being vested
          exclusively Public Service.

     (d)  Upon advance notice of eight hours or more, from any hour of any day
          given to customer Public Service by telephone, telegram or otherwise,
          customer shall discontinue the use of gas until further notice;
          customer shall designate personnel who will accept such notification
          at any hour of any day.

     (e)  If customer does not discontinue the use of gas after notification
          pursuant to Special Provision (d), the Commodity Charge shall be 60.0
          cents per therm for an amount equal to one hour's maximum requirement.
          Use of this amount shall be limited to a use rate per hour not greater
          than 5% customer's maximum hourly requirement.

          The charge for all additional gas used shall be ten times the 
          applicable Commodity Charge Cogeneration Interruptible Schedule CIG.

          Except for pilots, however, Public Service has no obligation to supply
          gas at any time follow, notice pursuant to Special Provision (d) and
          may discontinue completely all other deliveries of gas to customer
          during the period of interruption.



Date of Issue: November 14, 1986                    Effective: October 31, 1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President-Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
    Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163





<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                                      ORIGINAL SHEET NO. 38


                               RATE SCHEDULE CIG

                       COGENERATION INTERRUPTIBLE SERVICE
                                  (Continued)

(f)  Metering shall include a recording device, furnished by Public Service.
     Customer shall furnish an electrical supply for the operation of the
     recording device and may be required to supply a dedicated telephone line.

(g)  Upon request by Public Service on any day, customer shall furnish an
     estimate of the amount of gas to be taken under this rate schedule during
     the next 24-hour period.

(h)  Service supplied under this rate schedule shall be separately metered and
     shall not be combined with use under any other rate schedule for billing
     purposes.

(i)  Service will not be supplied under this rate schedule and any other gas
     rate schedule for the same process or operation at the same location except
     as specified under Special Provision (n).

(j)  Public Service shall not be liable in any way for any failure in whole or
     in part, temporary or permanent, to deliver gas under this rate schedule.

(k)  When customer is temporarily prevented from receiving service during any
     month by reason of any act of God, accident, strike, or work stoppage,
     legal process, governmental interference, or compliance with any
     governmental order, Public Service at its discretion may, upon customer's
     written request, prorate the Minimum Charge to the number of full days
     customer was able to receive service.

(l)  Public Service agrees that service under this rate schedule will not be
     interrupted unless service to the Rate Schedule ISG No. 6 alternate fuel
     oil customers have already been interrupted.

(m)  Gas supplied under this rate schedule is limited to a quantity equal to the
     lesser of either 15 therms for each net kilowatthour of cogenerated
     electric generation fueled by gas or the quantity of gas actually consumed
     by the cogeneration facility when operated in a cogeneration mode as
     determined by Public Service. Net cogenerated electric generation is
     defined as generation output less energy used to run the cogeneration
     facility's auxiliary equipment. Auxiliary equipment includes, but is not
     limited to, forced and induced draft fans, boiler feed pumps and
     lubricating oil systems.

(n)  Gas supplied in excess of the quantity described in Special Provision (m)
     will be billed under an applicable rate schedule as determined by Public
     Service except as specified under Special Provision (e).

(o)  Net cogenerated electric generation fueled by natural gas will be
     determined each month as follows:

         (o-1)  For facilities which burn two or more fuels simultaneously for
         cogeneration, net cogenerated electric generation will be allocated
         between such fuels on the Btu input of each fuel.

         (o-2) For facilities which change fuel usage between gas and an
         alternate fuel for cogeneration, net cogenerated electrical generation
         fueled by gas will be based on meter readings taken by the customer at
         the time the fuel change occurs or the portion of the allocated amount
         determined in Special Provision (m) prorated by the number of hours or
         days that the customer used gas.
         
Date of Issue: November 14, 1986                      Effective: October 31,1986
  Issued by FREDRICK R. DE SANTI, Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1986
                           in Docket No. ER85121163






<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY                FIRST REVISED SHEET NO.39
                                                              SUPERSEDING
P.U.C.N.J.NO. 10 GAS                                     ORIGINAL SHEET NO. 39




                               RATE SCHEDULE CIG

                     COGENERATION INTERRUPTIBLE SERVICE 
                                  (Continued)

(p)  Public Service, at its sole discretion, may utilize readings from customer
     or Company-owned meters to determine the quantity of gas to which this rate
     schedule is applicable in lieu of the allocation specified in Special
     Provision (o-1). The customer shall make available, and Public Service
     shall have the right to read, inspect and/or test such customer-owned
     meters during normal working hours. Additional gas, electric and/or useful
     thermal output meters required to determine the amount of gas to which this
     rate schedule is applicable will be installed, owned and operated by Public
     Service. However, Public Service may, at its sole option, use calculated or
     estimated data to determine such gas usage.

(q)  Customer is required to file a monthly report to Public Service containing
     the total amount of kilowatthours produced by the cogeneration facility.

(r)  EXPERIMENTAL COGENERATION SERVICE: Gas service under this Special Provision
     is limited to customers having commitments for service from Public Service
     under this experimental program as of September 24, 1985. When Experimental
     Cogeneration Service is supplied, the following provisions shall apply:

     (r-1) In lieu of the Commodity Charge calculation hereinbefore set forth, 
           the fixed contribution in any month shall be 1 cent per therm.

     (r-2) In lieu of the term hereinbefore set forth, the term shall be two
           years, except Qualifying Facilities which have made substantial
           investments in cogeneration facilities, including but not limited to
           the purchase of a diesel engine or gas turbine with associated waste
           heat boiler equipment or a steam turbine, installed specifically to
           receive service under this Special Provision, shall have the option
           to renew service at the same service location for such facilities
           through August 22, 1994.

(s)  Service under this rate schedule is not available for resale.

(t)  EXTENDED GAS SERVICE (AVAILABLE DECEMBER 26, 1990 TO APRIL 1, 1991): Gas
     service under this Special Provision is limited to customers having a
     combined nameplate-rated capacity of one megawatt or more and an executed
     application for this Special Provision. When service under this Rate
     Schedule is interrupted, service under this Special Provision will be
     supplied at Public Service's option. When Extended Gas Service is offered
     by Public Service, the following provisions shall apply:

     (t-1) In lieu of the Commodity charge calculation hereinbefore set forth,
           the following charges shall apply: 1) a Special Delivery Charge of
           $0.15 per therm for each therm of Extended Gas Service supplied to
           the customer; and 2) a Commodity Charge which shall be the actual
           delivered price of propane to Public Service or the highest cost gas
           purchased or used by Public Service when service under this Special
           Provision is offered, whichever is the incremental gas source.

     (t-2) An application for this Extended Gas Service shall be executed no
           later than January 15, 1991 and shall include the customer's maximum
           daily requirements under this Special Provision and a prepayment
           equal to four days of the Special Delivery Charge at the customer's
           maximum daily requirement. Use of gas above the maximum daily
           requirement, on any day for which Public Service has offered and the
           customer has requested Extended Gas Service, will be subject to the
           penalty as stated in Special Provision (e). Such prepayment shall be
           non-refundable unless and to the extent that Public Service does not
           offer customer such Extended Gas Service for at least 96 hours.


Date of issue: January 7, 1991                      Effective: December 26, 1990
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated December 26, 1990
                           in Docket No. GT90111290

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY

P.U.C.N.J. No. 10 GAS                               ORIGINAL SHEET No. 39A

                               RATE SCHEDULE CIG

                      COGENERATION INTERRUPTIBLE SERVICE
                                  (Continued)

     (t-3) Customer will be notified of the Commodity Charge at least eight
           hours prior to the availability of this service, or prior to a change
           in the Commodity Charge, by fax machine. Following receipt of Public
           Service's notice, the customer will have two hours within which to
           fax to Public Service his acceptance of the Commodity Charge for the
           service. If customer does not accept this service, customer must
           discontinue the use of gas the time designated by Public Service,
           which time shall not be less than eight hours after Public Service's
           notice to Customer of the availability and the Commodity Charge of
           the Extended Gas Service. Any gas usage by customer following the
           time designated by Public Service shall be subject to the penalty as
           stated in Special Provision (e).

STANDARD TERMS AND CONDITIONS:

  This rate schedule is subject to the Standard Terms and Conditions on Sheets
  Nos. 6 to 18, inclusive, of this Tariff, except Section 3, Extension of
  Distribution Mains, Section 5.2, Service Connection Charges, Section 7.6,
  Appliance Adjustments and Section 8.8, Proration of Monthly Charges.


Date of Issue: January 7, 1991                       Effective: December 26,1990
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations 
                    80 Park Plaza, Newark, New Jersey 07101
Filed pursuant to Order of Board of Public Utilities, dated December 26, 1990
                           in Docket No. GT90111290


<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             SIXTH REVISED SHEET NO.40
                                                           SUPERSEDING
P.U.C.N.J NO. 10 GAS                                FIFTH REVISED SHEET NO.40

                              RATE SCHEDULE TSG-F

                        FIRM TRANSPORTATION GAS SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     General purposes where the maximum requirement for firm gas is not less
     than 150 therms per hour, where the customer has the installed capability
     to utilize an alternate type of fuel and where the customer has a current
     fully executed contract(s) to purchase natural gas supplies and transport
     these supplies to interconnection points with Public Service's distribution
     system from which Public Service may receive and physically transport and
     deliver the customer's purchased gas supply.

CHARACTER OF SERVICE:

     Continuous transportation subject to Public Service's available capacity to
     provide such service.

RATE:

     SERVICE CHARGE:
     $250.00 in each month.
     
     TRANSPORTATION CHARGE FOR THE FIRST 1,000 THERMS:
     18.165 cents per therm for the first................1,000 therms
     transported in each month

     TRANSPORTATION CHARGE IN EXCESS OF 1,000 THERMS IN THE MONTHS OF MAY
     THROUGH OCTOBER:
     10.837 cents per therm for the next.............4,000 therms transported in
     each month 
      7.100 cents per therm in excess of.............5,000 therms transported in
     each month

     TRANSPORTATION CHARGE IN EXCESS OF 1,000 THERMS IN THE MONTHS OF NOVEMBER
     THROUGH APRIL:
     15.204 cents per therm in excess of.............1,000 therms transported in
     each month

     These charges do not apply to gas sold to customer by PSE&G pursuant to 
     Special Provisions (b) and (p).
     
     OTHER CHARGES:
     See Special Provisions (b), (f), (i) and (p).

MINIMUM CHARGE:     

     The monthly minimum charge shall be $250.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of
     hundred cubic feet used by the "therms multiplier" expressed in therms per
     cubic feet which appears on every bill.

     The "therms multiplier" shall be on the basis of the actual heating value 
     of the gas used.

TERMS OF PAYMENT:     

     Bills are due on presentation subject to a late payment charge at the rate
     of 1.416% per monthly billing period in accordance with Section 8.13 of the
     Standard Terms and Conditions. Service to a body politic will not be
     subject to a late payment charge.

   

Date of Issue: December 14, 1990                    Effective: January 1, 1991
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated August 29, 1990
                            in Docket No.ER85121163

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              THIRD REVISED SHEET NO.41
                                                             SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                SECOND REVISED SHEET NO.41

                              RATE SCHEDULE TSG-F

                        FIRM TRANSPORTATION GAS SERVICE
                                  (Continued)

TERM:

     A minimum of one year from the commencement date specified in the
     Application for Firm Transportation Gas Service required by Special
     Provision (a). The term may be extended by agreement between customer and
     Public Service.

SPECIAL PROVISIONS:

(a)  Customer will be required to sign a service agreement and service will be
     restricted to the maximum hourly, daily and monthly requirements specified.
     Upon request by the customer, Public Service may, in its sole discretion,
     accept and deliver natural gas volumes in excess of the maximum levels
     specified in the service agreement.

(b)  Customer shall be responsible for scheduling the deliveries of its gas to
     Public Service and for maintaining a balance between its deliveries to
     Public Service and its usage.

     Customer and Public Service will schedule deliveries on a daily basis
     during any month on a mutually acceptable basis giving customer reasonable
     flexibility consistent with Public Service's operating limitations. Public
     Service shall maintain a cumulative account balance for customer which
     shall be debited with quantities of gas received by Public Service and
     credited with quantities of gas used by customer.

     If customer ends a season (end of months of April and October) with a
     positive account balance in excess of 30% of customer's usage in such
     season, customer shall pay Public Service 7 cents per therm for such
     positive balance in excess of 30%. Additionally, Public Service may
     interrupt the receipt of customer's gas balance until excess of 30% is
     eliminated.

     If customer ends season with a negative account balance in excess of 15% of
     the quantity used by customer in such season, the quantity in excess of 15%
     will be purchased by the customer at the LVG Rate Schedule winter tail
     block rate (or successor rate schedule) plus the Levelized Gas Adjustment
     Charge.

     Upon expiration of the service agreement, Public Service shall review the
     status of customer's account. In the event customer's account has a
     negative balance, the customer will be charged the LVG winter tail block
     rate (or successor rate) plus the Levelized Gas Adjustment Charge for each
     therm of imbalance. If customer's account has a positive balance, customer
     will have thirty days within which to balance its account. If after thirty
     days, customer has failed to balance his account, Public Service may retain
     at no cost the gas quantities then constituting the imbalance in customer's
     account, free and clear of any claims to title.

(c)  Customer or customer's agent shall provide Public Service a statement
     specifying the quantities of gas delivered to Public Service for such
     customer. Failure to provide this information timely shall give Public
     Service the right to determine deliveries based upon records in its
     possession. Customer will be responsible for resolving with transporter any
     disagreement customer has relative to the accuracy of transporter's record
     of deliveries of gas to Public Service for customer.

(d)  Customer or customer's agent shall provide Public Service with a minimum of
     twenty-four hours prior notice of the natural gas volumes customer intends
     to have transporter deliver to Public Service for customer's account.

(e)  Upon advance notice of eight hours or more, from any hour of any day given
     to customer by Public Service by telephone, telegram or otherwise, customer
     shall discontinue the use of gas until further notice. Customer shall
     designate personnel who will accept such notification at any hour of any
     day. Public Service will not interrupt service to customer with respect to
     quantities of gas being delivered to Public Service by customer on any day
     unless operating limitations on Public Service's system preclude the
     delivery of such gas to customer.

Date of Issue: November 5, 1990                    Effective: November 1, 1990
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated October 31, 1990
                           in Docket No. GR90070649J

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY              FIRST REVISED SHEET NO. 42
                                                             SUPERSEDING
P.U.C.N.J. NO. 10 GAS                                   ORIGINAL SHEET NO. 42

                              RATE SCHEDULE TSG-F

                        FIRM TRANSPORTATION GAS SERVICE
                                  (Continued)

(f)  If customer does not discontinue the use of gas after notification pursuant
     to Special Provision (e), customer shall be charged ten times the commodity
     charge contained in Rate Schedule ISG for 0.3% No. 6 Oil (or successor rate
     schedule) for each therm of gas used by the customer in excess of the
     number of the therms of gas delivered to Public Service by the customer
     during each day of any interruption period.

(g)  Upon the expiration of the service agreement, customer shall be eligible to
     receive gas service under Rate Schedule LVG (or successor rate schedule)
     providing customer notifies Public Service within 90 days of such
     expiration of its election to purchase such service. After ninety days
     customer's eligibility to receive gas sales service shall be the same as
     the eligibility of any new person or entity which is at that time
     requesting gas sales service.

(h)  Customer shall: make all the arrangements necessary; obtain from
     appropriate regulating bodies any approvals necessary; prepare any reports
     or other filings which any regulatory body may require; and be responsible
     for all costs, charges and expenses including but not limited to the
     payment to appropriate governmental entities for any tax or assessment
     relative to the acquisition, transportation of use of customer's gas
     supply.

(i)  Customer will be required to make payment toward all the investment in
     facilities which Public Service installs to provide service under this rate
     schedule. Public Service will refund one-third of the TSG-F charge
     annually, up to a five-year period, not to exceed the cost of investment.
     The making of a payment shall not give the customer any interest in the
     facilities, the ownership being vested exclusively in Public Service.
     
(j)  Customer warrants that at the time of delivery of gas to Public Service it
     will have good title to deliver all gas volumes made available.
 
(k)  Metering shall include a recording device, furnished by Public Service.
     Customer shall furnish an electrical supply source, an individual message
     business control office line and arrange for data transmission of metering
     information and termination of data on an RJ45S modular jack.

(l)  Service supplied under this rate schedule shall be separately metered and
     shall not be combined with use under any other rate schedule for billing
     purposes. Customer shall not be eligible to receive service under this
     rate schedule and any other rate schedule for the same equipment or for
     equipment supplying a common steam header during the term of the Service
     Agreement.

(m)  Customer has installed and maintains complete and adequate standby
     equipment and fuel supply for operation with another fuel when the gas
     supply is interrupted.

(n)  Public Service shall not be liable in any way for any failure in whole or
     in part, temporary or permanent, to deliver gas under this rate schedule.

(o)  Service under this rate schedule is not available for resale.

(p)  Public Service, at its option, may sell gas to customer at a rate
     equivalent to the commodity charge under Rate Schedule ISG for the
     alternate fuel type specified in customer's affidavit, subject to the TSG
     floor price.

STANDARD TERMS AND CONDITIONS:     

     This rate schedule is subject to the Standard Terms and Conditions on
     Sheets Nos. 6 to 18, inclusive, of this Tariff, except Section 3, Extension
     of Distribution Mains, Section 5.2, Service Connection Charges, Section
     7.6, Appliance Adjustments and Section 8.8, Proration of Monthly Charges.

Date of Issue: December 27, 1989                     Effective: December 6, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President-Customer Operations 
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622
 
<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY               FIRST REVISED SHEET NO. 43
                                                              SUPERSEDING
P.U.C.N.J. NO.10 GAS                                     ORIGINAL SHEET NO. 43

                             RATE SCHEDULE TSG-NF

                      NON-FIRM TRANSPORTATION GAS SERVICE

APPLICABLE TO USE OF SERVICE FOR:

     General purposes where the maximum requirement for interruptible gas is not
     less than 150 therms per hour, where the customer has the installed
     capability to utilize an alternate type of fuel, and where the customer has
     a current fully executed contract(s) to purchase natural gas supplies and
     transport these supplies to interconnection points with Public Service's
     distribution system from which Public Service may receive and physically
     transport and deliver the customer's purchased gas supply.

CHARACTER OF SERVICE:

     Interruptible transportation.

RATE:

     SERVICE CHARGE:
     $250.00 in each month.

     TRANSPORTATION CHARGE:
     7.1 cents per transportation therm used by customer.

     This charge does not apply to gas sold to customer by PSE&G pursuant to 
     Special Provisions(b) and (h).

     OTHER CHARGES:
     See SPECIAL PROVISIONS (b), (f), (h), and (j).

MINIMUM CHARGE:

     The monthly minimum charge shall be $250.00.

DETERMINATION OF THERMS:

     The number of therms used shall be determined by multiplying the number of
     hundred cubic feet used by the "therms multiplier" expressed in therms per
     hundred cubic feet which appears on every bill.

     The "therms multiplier" shall be on the basis of the actual heating value 
     of gas used.

TERMS OF PAYMENT:

     Bills are due on presentation subject to a late payment charge at the rate 
     of 1.416% per monthly billing period in accordance with Section 8.13 of the
     Standard Terms and Conditions. Service to a body politic will not be 
     subject to late payment charge.

TERM:

     A minimum of one year from the commencement date specified in the 
     Application for Non-Firm Transportation Gas Service required by Special 
     Provision (a). The term may be extended by agreement between customer and 
     Public Service.



Date of Issue: November 5, 1990                     Effective: November 1, 1990
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
 Filed pursuant to Order of Board of Public Utilities, dated October 31, 1990
                           in Docket No. GR90070649J
   






<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY           SECOND REVISED SHEET NO. 44
                                                           SUPERSEDING
P.U.C.N.J. NO. 10 GAS                              FIRST REVISED SHEET NO. 44

                             RATE SCHEDULE TSG-NF

                      NON-FIRM TRANSPORTATION GAS SERVICE
                                  (Continued)

SPECIAL PROVISIONS:

(a)  Customer will be required to sign a service agreement and service will be
     restricted to the maximum annual, daily, and hourly requirements, and the
     location and equipment specified. Attached to the service agreement will be
     a signed affidavit, certifying the specific grade of fuel oil (or oils)
     that can physically and legally be utilized by the installation being
     served. The affidavit shall include the percentage of operations which can
     physically and legally be served by each alteration fuel. The customer will
     submit, within 30 days of change in operations, a new affidavit to Public
     Service when such change effects its alternate fuel capability. Public
     Service reserves the right to inspect the customer's operation as to
     alternate fuel capability. Upon request by customer, Public Service may
     deliver available volumes of gas in excess of the maximum requirements, for
     limited periods. Such deliveries shall be deemed to constitute a change in
     the requirements specified in the application.

(b)  Customer shall be responsible for scheduling the deliveries of its gas to
     Public Service and for maintaining a balance between its deliveries to
     Public Service and its usage. Unless prior agreement is reached with Public
     Service, gas volumes that are delivered by customer to Public Service
     during any month shall be delivered at a substantially uniform daily rate.
     Public Service shall maintain a cumulative gas account balance for
     customer which shall be debited with quantities of gas received by Public
     Service and credited with quantities of gas used by customer. If at the end
     of any month customer's account balance is positive in an amount in
     excess of 10% of customer's usage in such month, customer shall pay Public
     Service 3 cents per therm for any balance in excess of 10%. In any month
     immediately following a month for which customer has a negative balance in
     excess of 10%, customer shall bring its account balance within 10% by
     purchasing the negative balance in excess of 10% from Public Service at a
     rate equal to 110% of the commodity rate described in Special Provision (h)
     for the month in which the excess negative balance occurred. Public Service
     shall not be required to make such gas sales if doing so will adversely
     affect Public Service's other customers. At anytime that customer has a
     negative imbalance in excess of 10% and the continual usage of such gas
     will adversely affect Public Service's other customers, Public Service upon
     notice as specified in Special Provision (e), may limit customer usage on
     any day to no more than customer's deliveries to Public Service on that
     same day, until such time as the negative balance in excess of 10% is
     eliminated. When customer's usage is limited to its daily deliveries, for
     any usage in excess of its deliveries on any day, such customer will be
     charged a penalty calculated in the manner as specified in Special
     Provision (f).

     Upon expiration of the service agreement, Public Service shall review the
     status of customer's account. In the event customer's account has a
     negative balance, customer will be charged 110% of the applicable commodity
     charge under Rate Schedule ISG (or successor rate) for each therm of
     negative balance. If customer's account has a positive balance, customer
     will have thirty days within which to balance its account. If after thirty
     days, customer has failed to balance his account, Public Service may retain
     at no cost the gas volumes then constituting the balance in customer's
     account, free and clear of any claims to title.

(c)  Customer or customer's agent shall provide Public Service a statement
     specifying the quantities of gas delivered to Public Service for such
     customer. Failure to provide this information timely shall give Public
     Service the right to determine deliveries based upon records in its
     possession. Customer will be respectable for resolving with transporter any
     disagreement customer has relative to the accuracy of transporter's record
     of deliveries of gas to Public Service for customer.

(d) Customer or customer's agent shall provide Public Service with a minimum of
     twenty-four hours prior notice of the natural gas volumes customer intends
     to have transporter deliver to Public Service for customer's account.

(e) Upon advance notice of eight hours or more, from any hour of any day given
     to customer by Public Service by telephone, telegram or otherwise, customer
     shall discontinue the use of gas until further notice; customer shall
     designate personnel who will accept such notification at any hour of any
     day. Public Service will not interrupt service to customer with respect to
     any quantities of gas being delivered to Public Service by customer on any
     day unless operating limitations on Public Service's system preclude the
     deliver of such gas to customer.

(f) If customer does not discontinue the use of gas after notification pursuant
     to Special Provision (e), customer shall be charged ten times the commodity
     charge contained in Rate Schedule ISG for 0.3% No. 60 (or successor rate
     schedule) for each therm of gas used by the customer in excess of the
     number of therms of gas delivered to Public Service by the customer during
     each day of any interruption period.

Date of Issue: April 4, 1991                           Effective: March 26, 1991
Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President--Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
  Filed pursuant to Order of Board of Public Utilities, dated March 26, 1991
                           in Docket No. GT91010086

<PAGE>
 
PUBLIC SERVICE ELECTRIC AND GAS COMPANY             FIRST REVISED SHEET NO.45
                                                           SUPERSEDING
P.U.C.N.J. NO 10 GAS                                   ORIGINAL SHEET NO.45


                             RATE SCHEDULE TSG-NF

                      NON-FIRM TRANSPORTATION GAS SERVICE
                                  (Continued)


(g)  After the expiration of the service agreement, customer's eligibility to
     receive gas sales service shall be the same as the eligibility of any
     person or entity which is at that time requesting gas sales service as a
     new customer.

(h)  Public Service, at its option, may sell gas to customer at a rate equal to
     the applicable commodity rate for service under Rate Schedule ISG for the
     alternate fuel category designated in customer's affidavit, subject to the
     TSG floor price.

(i)  Customer shall: make all the arrangements necessary; obtain from
     appropriate regulating bodies any approvals necessary; prepare any reports
     or other filings which any regulatory body may require; and be responsible
     for all costs, charges and expenses including but not limited to the
     payment to appropriate governmental entities for any tax or assessment
     relative to the acquisition, transportation, or use of customer's gas
     supply.

(j)  Customer will be required to make payment toward all the investment in
     facilities which Public Service installs to provide service under this rate
     schedule. The making of a payment shall not give the customer any interest
     in the facilities, the ownership being vested exclusively in Public
     Service.

(k)  Customer warrants that at the time of delivery of gas to Public Service it
     will have a good title to deliver all gas volumes made available.

(l)  Metering shall include a recording device, furnished by Public Service.
     Customer shall furnish an electrical supply source, an individual message
     business control office line and arrange for data transmission of metering
     information and termination of data on an RJ45S modular jack.

(m)  Service supplied under this rate schedule shall be separately metered and
     shall not be combined with use under any other rate schedule for billing
     purposes. Customer shall not be eligible to receive service under this rate
     schedule and any other rate schedule for the same equipment or for
     equipment supplying a common steam header during the term of this 
     agreement.

(n)  Customer has installed and maintains complete and adequate standby
     equipment and fuel supply for operation with another fuel when the gas
     supply is interrupted.

(o)  Public Service shall not be liable in any way for any failure in whole or
     in part, temporary or permanent, to deliver gas under this rate schedule.

(p)  Service under this rate schedule is not available for resale.

STANDARD TERMS AND CONDITIONS:

     This rate schedule is subject to the Standard Terms and Conditions on
     Sheets Nos. 6 to 18, inclusive, of this Tariff, except Section 3, Extension
     of Distribution Mains, Section 5.2 Service Connection Charges, Section 7.6,
     Appliance Adjustments and Section 8.8, Proration of Monthly Charges.





Date of Issue: December 27, 1989                     Effective: December 6, 1989
 Issued by ROBERT J. DOUGHERTY, JR., Senior Vice President-Customer Operations
                    80 Park Plaza, Newark, New Jersey 07101
          Filed pursuant to Order of Board of Public Utilities, dated
                           in Docket No. GR89060622






<PAGE>
 
                                   EXHIBIT C
                                   ---------

                                      [*]
<PAGE>
 
                                   EXHIBIT D
                                   ---------

                                      [*]
<PAGE>
 
                                   EXHIBIT E
                                   ---------

                                      [*]
<PAGE>
 
                                   EXHIBIT F
                                   ---------

                                      [*]     
<PAGE>
 
                                   EXHIBIT G
                                   ---------

                                      [*]
<PAGE>
 
                                                                       EXHIBIT H
                                                                       LETTER #1


                                 May 15, 1991


Camden Cogen, L.P.
1600 Smith Street
Suite 5000, 50th Floor
Houston, TX  77002

        Re:  Gas Service Agreement Dated May 15, 1991

Gentlemen:

        Pursuant to paragraph 3.9 of the above-captioned agreement (the
"Agreement"), Public Service Electric and Gas Company ("Seller") hereby
represents that it has entered into contracts with one or more natural gas
interstate pipeline companies ("Transporter(s)") for Seller to acquire firm
transportation capacity on Transporter(s)' systems and that, when in service,
such capacity, combined with other capacity available to Seller, will be
sufficient to permit Seller to render the services to be provided under the
Agreement. Consistent with said paragraph 3.9, please furnish the required [*]
letter of credit to Seller within five (5) business days of the Construction
Drawdown Date or, if later, five (5) business days of your receipt of this
letter.

                                        Very truly yours,


<PAGE>
 
                                                                       EXHIBIT H
                                                                       LETTER #2



                                 May 15, 1991


Camden Cogen, L.P.
1600 Smith Street
Suite 5000, 50th Floor
Houston, TX  77002

        Re:  Gas Service Agreement Dated May 15, 1991

Gentlemen:

        Pursuant to paragraph 3.9 of the above-captioned agreement (the 
"Agreement"), Public Service Electric and Gas Company ("Seller") hereby 
represents that the Federal Energy Regulatory Commission ("FERC") has issued a 
final order granting a certificate of public convenience and necessity to one 
or more natural gas interstate pipeline companies ("Transporter(s)") to provide 
firm transportation capacity to Seller which, when in service together with 
other capacity available to Seller, will be sufficient to permit Seller to 
render firm, uninterruptible delivery service of at least the Contract Quantity 
pursuant to the terms of the Agreement. Consistent with said paragraph 3.9, 
please furnish the required [*] letter of credit within five (5) business days 
of your receipt of this letter.

                                        Very truly yours,

<PAGE>


                                                                       EXHIBIT H
                                                                       LETTER #3




                                 May 15, 1991


Camden Cogen, L.P.
1600 Smith Street
Suite 5000, 50th Floor
Houston, TX  77002

        Re:  Gas Service Agreement Dated May 15, 1991

Gentlemen:

        Pursuant to paragraph 3.9 of the above-captioned agreement (the 
"Agreement") Public Service Electric and Gas Company ("Seller") hereby 
represents that Seller will have available firm transportation capacity on the  
systems of one or more natural gas interstate pipeline companies and will be 
prepared on the Requested Service Date to render firm, uninterruptible delivery 
service of at least the Contract Quantity under, and subject to the other 
provisions of, the Agreement on a year-round basis in accordance with the terms 
of the Agreement. Consistent with said paragraph 3.9, please furnish the final, 
required [*] letter of credit within five (5) business days of your receipt of 
this letter.

                                        Very truly yours,

<PAGE>
 
                                                                   EXHIBIT 10.79

                       ASSIGNMENT AND SECURITY AGREEMENT

        ASSIGNMENT and SECURITY AGREEMENT, dated as of February 4, 1992, made 
by COGEN TECHNOLOGIES CAMDEN GP LIMITED PARTNERSHIP, a Delaware limited 
partnership (the "Pledgor" or the "Camden General Partner"), the sole general 
partner of Camden Cogen L.P. (the "Camden Limited Partnership"), a Delaware 
limited partnership, in favor of General Electric Capital Corporation ("GE 
Capital"), as collateral agent for the GP Lender (as defined below) under the 
Linden GP Loan Agreement (as defined below) (in such capacity, the "Collateral 
Agent").

                             W I T N E S S E T H :

        WHEREAS, pursuant to the Construction and Term Loan Agreement, dated as 
of February 4, 1992, among Camden Limited Partnership, the lenders from time to 
time party thereto (the "Camden Lenders") and GE Capital, as agent for the 
Camden Lenders (in such capacity, the "Camden Agent") (as the same may be 
amended, supplemented or otherwise modified from time to time, the "Camden 
Limited Partnership Loan Agreement"), the Camden Lenders have agreed to make 
loans to, and GE Capital has agreed to issue letters of credit for the account 
of, the Camden Limited Partnership in connection with the development and 
construction of a cogeneration facility in Camden, New Jersey (the "Camden 
Project"); and

        WHEREAS, pursuant to the Term Loan Agreement, dated as of February 15, 
1990, between Cogen Technologies Linden, Ltd., a Texas limited partnership (the 
"Borrower"), and General Electric Power Funding Corporation, a Delaware 
corporation (the "GP Lender") (as the same may be amended, supplemented or 
otherwise modified from time to time, the "Linden GP Loan Agreement"), the GP 
Lender has made, and has agreed to make, certain loans (the "GP Loans") for the 
account of the Borrower; and

        WHEREAS, the Borrower has requested the GP Lender to make a GP Loan (the
"Requested GP Loan") pursuant to the Linden GP Loan Agreement, the proceeds of 
which will be loaned (the "Affiliate Loan") by the Borrower to an affiliate of 
the Pledgor; and

        WHEREAS, the Pledgor and the Camden Limited Partnership will derive 
substantial benefit from the making of the Affiliate Loan; and

        WHEREAS, it is a condition precedent to the obligation of the GP Lender 
to make the Requested GP Loan to the Borrower




<PAGE>
 
                                                                               2

under the Linden GP Loan Agreement that the Pledgor shall have executed and 
delivered this Pledge and Security Agreement;

        NOW, THEREFORE, in consideration of the premises and to induce the GP 
Lender to make the Requested GP Loan, the Pledgor hereby agrees with the 
Collateral Agent as follows:

        1. Defined Terms. (a) All capitalized terms used herein which are 
defined in the Linden GP Loan Agreement shall have their respective meanings as 
therein defined, unless such terms are defined herein. All terms defined herein 
or in the Linden GP Loan Agreement in the singular shall have the same meanings 
when used in the plural and vice versa.

        (b) The following terms defined in Article 9 of the Uniform Commercial 
Code as in effect in the State of New York are used herein as so defined: 
Chattel Paper and Instrument; and the following terms shall have the following 
meanings:

        "Agreement" shall mean this Assignment and Security Agreement, as the 
same may from time to time be amended, supplemented or otherwise modified.

        "Amended and Restated Partnership Agreement" shall have the meaning set 
forth in the Camden Capital Contribution Agreement.

        "Camden Capital Contribution Agreement" shall mean the Capital 
Contribution Agreement, dated as of February 4, 1992, among the Camden Limited 
Partnership, the Camden General Partner and GE Capital, as amended, supplemented
or otherwise modified from time to time.

        "Camden Collateral Security Documents" shall have the meaning assigned 
to the term "Collateral Security Documents" in the Camden Limited Partnership 
Loan Agreement.

        "Camden General Partner Loan Agreement" shall mean the Term Loan 
Agreement, dated as of February 4, 1992, between GE Capital and the Camden 
General Partner, as amended, supplemented or otherwise modified from time to 
time.

        "Camden General Partner Partnership Agreement": the collective reference
to (a) the certificate of limited partnership of the Camden General Partner, 
dated July 26, 1991, filed with the Secretary of State of the State of Delaware 
on August 12, 1991, and (b) the Agreement of Limited Partnership of the Camden 
General Partner, dated as of July 26, 1991 between the General Partner (as 
defined in the Camden General Partner Loan Agreement), as general partner, and 
the Limited Partner (as defined in the Camden General Partner Loan Agreement), 
as limited partner (as amended by the Amendment thereto dated December 1, 1991),
in


<PAGE>
                                                                               3
 
each case as amended, supplemented or otherwise modified from time to time.

        "Camden Limited Partnership Partnership Agreement" shall mean the 
collective reference to (a) the Amended and Restated Certificate of Limited 
Partnership of the Camden Limited Partnership, dated July 26, 1991, filed by 
the Camden General Partner with the Secretary of State of the State of Delaware
on July 21, 1991, and (b) the Agreement of Limited Partnership of the Camden 
Limited Partnership, dated on or as of March 25, 1988, between PFC Camden One, 
Inc., as general partner and PFC Camden Two, Inc. as limited partner (as amended
by amendments dated on  or as of December 28, 1990, December 31, 1990, July 26, 
1991 and December 1, 1991), in each case as amended, supplemented or otherwise 
modified from time to time.

        "Camden Secured Parties" shall mean the Camden Agent, the Camden Lenders
and GE Capital.

        "Code" shall mean the Uniform Commercial Code as the same may from time 
to time be in effect in the State of New York.

        "Collateral" shall have the meaning assigned to it in Section 2 of this 
Agreement.

        "Obligations" shall mean all the unpaid principal amount of, and accrued
interest on, the Notes and all other obligations and liabilities of the Borrower
to the GP Lender, whether direct or indirect, absolute or contingent, due or to 
become due, or now existing or hereafter incurred, which may arise under, out of
or in connection with the Linden GP Loan Agreement, the Notes, this Agreement or
the other Transaction Documents, whether on account of principal, interest, 
reimbursement obligations, fees, indemnities, costs, expenses (including, 
without limitation, all fees and disbursements of counsel to the GP Lender) or 
otherwise.

        "Permitted Liens" shall have the meaning set forth in the Camden General
Partner Loan Agreement, provided that (i) all references to the "Lender" 
thereunder shall be deemed to be references to the "Lender" thereunder and to 
the "GP Lender" hereunder and (ii) all references to the "Collateral" thereunder
shall be deemed to be references to the "Collateral" as defined in the Camden 
General Partner Loan Agreement and the "Collateral" as defined herein.

        "Proceeds" shall have the meaning assigned to it under the Code and, in 
any event, shall include, but not be limited to, (i) any and all proceeds of any
insurance,
<PAGE>

                                                                               4

indemnity, warranty or guaranty payable to the Pledgor from time to time with 
respect to any of the Collateral, (ii) any and all payments (in any form 
whatsoever) made or due and payable to the Pledgor from time to time in 
connection with any requisition, confiscation, condemnation, seizure or 
forfeiture of all or any part of the Collateral by any Governmental Authority 
(or any person acting under color of Governmental Authority) and (iii) any and 
all other amounts from time to time paid or payable under or in connection with 
any of the Collateral.

        "Security Deposit Agreement" shall have the meaning set forth in the 
Camden Limited Partnership Loan Agreement.

        2. Assignment and Grant of Security Interest. As collateral security for
the prompt and complete payment and performance when due (whether at the stated 
maturity, by acceleration or otherwise) of the Loans and all other Obligations, 
the Pledgor hereby sells, assigns, conveys, mortgages, pledges, hypothecates and
transfers to the Collateral Agent for the benefit of the GP Lender, and hereby 
grants to the Collateral Agent for the benefit of the GP Lender a continuing 
first (other than as to Permitted Liens) priority security interest in, to and 
under all of the following property now owned or at any time hereafter acquired 
by the Pledgor or in which the Pledgor now has or at any time in the future may 
acquire any rights, title or interest (all of which being hereinafter 
collectively called the "Collateral"):

           (i) all right, title and interest of the Pledgor in the Camden
Limited Partnership;

           (ii) any and all moneys due and to become due to the Pledgor now or
in the future by way of a distribution made to the Pledgor in its capacity as a
partner of the Camden Limited Partnership;

           (iii) any and all moneys due or to become due to the Pledgor now or 
in the future by virtue of the Pledgor's interest as a partner in the Camden 
Limited Partnership;

           (iv) any other property of the Camden Limited Partnership to which 
the Pledgor now or in the future may be entitled in its capacity as a partner of
the Camden Limited Partnership by way of distribution, return of capital or 
otherwise;

           (v) any other claim which the Pledgor now has or may in the future 
acquire in its capacity as a partner of the Camden Limited Partnership against 
the Camden Limited Partnership and its property; and 
<PAGE>
 
                                                                               5

        (vi) to the extent not otherwise included, all Proceeds of any or all of
the foregoing.

        3. Notification of Pledge. Pursuant to Section 8-313(1)(h)(iv) of the 
Uniform Commercial Code as in effect in the State of Delaware (the 
"Notification Section"), this Agreement shall constitute written notification by
the Pledgor to GE Capital, the registered pledgee of the Collateral under
Section 8-313(1)(b) of the Uniform Commercial Code as in effect in the State of
Delaware (the "Registered Pledgee"), of the security interest granted hereby to
the Collateral Agent, for the benefit of the GP Lender. The signature of the
Registered Pledgee on the signature page hereof shall constitute
acknowledgement, pursuant to the Notification Section, by the Registered Pledgee
of the transfer, to the Pledgee, of the security interest purported to be
effected by this Agreement.

        4. Limitations on Distributions. So long as this Agreement shall remain 
in full force and effect and no Default or Event of Default under the Linden GP 
Loan Agreement shall have occurred and be continuing, any distributions of cash 
or other property payable in respect of the Collateral shall be paid to the 
Pledgor in accordance with the Amended and Restated Partnership Agreement and 
the Security Deposit Agreement. After the occurrence of a Default or Event of 
Default (as defined in the Linden GP Loan Agreement) and for so long as such 
Default or Event of Default is continuing, such distributions shall be applied 
by the Collateral Agent to the payment in whole or in part of the Obligations, 
as provided in the Camden Collateral Agency Agreement.

        5. Representations and Warranties. The Pledgor hereby represents and 
warrants that:

           (a) The Pledgor (i) is a limited partnership validly existing under 
the laws of the State of Delaware, (ii) has all the requisite partnership power 
and authority to own and operate its properties, to carry on its business as now
conducted and to pledge its interest in the Collateral pursuant to this 
Agreement and (iii) is duly qualified to do business in the States of New Jersey
and Texas, the only jurisdictions in which the conduct of its business or the 
ownership or lease of its assets require such qualification. The Pledgor is the 
sole general partner of the Camden Limited Partnership, and its partnership 
interest is 66.667%. Complete and correct copies of the Camden Limited 
Partnership Agreement and the Camden General Partner Partnership Agreement and 
of all contracts and agreements between the Pledgor and the Camden Limited 
Partnership have been delivered to the GP Lender.

           (b) Except for those filings and registrations required to perfect 
the Liens created by this Agreement,
<PAGE>
 
                                                                               6

neither the  Camden Limited Partnership nor the Pledgor is required to obtain
any order, consent, approval or authorization of, or required to make any 
declaration or filing, with, any Governmental Authority or any other Person in 
connection with the execution and delivery of this Agreement and the granting 
and perfection of the security interests pursuant to this Agreement.

        (c) This Agreement has been duly executed and delivered on behalf of the
Pledgor, and this Agreement constitutes a legal, valid and binding obligation of
the Pledgor, enforceable against the Pledgor in accordance with its terms, 
except as enforceability may be limited by applicable bankruptcy, insolvency, 
reorganization, moratorium or similar laws affecting the enforcement of 
creditors' rights generally and except as enforceability may be subject to 
general principles of equity, whether such principles are applied in a court of 
equity or at law.

        (d) The execution, delivery and performance of this Agreement will not 
result in any violation of or be in conflict with or constitute a default under 
any term of the Camden Limited Partnership Agreement or the Camden General 
Partner Partnership Agreement, or of any Requirement of Law or Contractual 
Obligation applicable to the Pledgor except to the extent that the failure to 
comply therewith could not reasonably be expected to (i) have a material adverse
effect on the Collateral or (ii) materially adversely affect the ability of the 
Pledgor to perform its obligations under this Agreement, or result in the 
creation of any Lien upon any of the properties or revenues of the Pledgor 
pursuant to any such Requirement of Law or Contractual Obligation other than the
Liens in favor of the Collateral Agent created pursuant to this Agreement.

        (e) Except for the security interest granted to the Collateral Agent 
pursuant to this Agreement and the security interests granted to the Collateral 
Agent pursuant to the Camden Collateral Security Documents, the Pledgor is the 
sole owner of the Collateral, having good title thereto, free and clear of any 
and all Liens other than Permitted Liens and the Liens in favor of the 
Collateral Agent created pursuant to this Agreement.

        (f) No security agreement, financing statement, equivalent security or 
lien instrument or continuation statement covering all or any part of the 
Collateral is on file or of record in any public office or with the Camden 
Limited Partnership, except such as constitute Permitted Liens or as may have
been or will be filed or registered (i) by the Pledgor in favor of the
Collateral Agent pursuant to this Agreement and in favor of the Camden Secured
Parties created pursuant to the Camden Collateral Security Documents
<PAGE>

                                                                               7

or (ii) by the General Partner (as defined in the Camden General Partner Loan 
Agreement) in favor of the lender party to the Camden General Partner Loan 
Agreement pursuant to the Collateral Security Documents (as defined in the 
Camden General Partner Loan Agreement).

           (g) This Agreement constitutes a valid and continuing first lien 
(subject to the Permitted Liens) on and perfected security interest in the 
Pledgor's right, title and interest in and to the Collateral (other than those 
items of Collateral which, individually or in the aggregate, are not material) 
in favor of the Collateral Agent, prior (other than as to the Permitted Liens) 
to all other Liens, and is enforceable as such against creditors of and 
purchasers from the Pledgor. All action necessary or desirable to protect and 
perfect such security interest, including, but not limited to, the filing of 
financing statements in the jurisdictions referred to on Schedule I to this 
Agreement and the registration of the pledge effected hereby on the books of the
Camden Limited Partnership in accordance with the provisions of the Uniform 
Commercial Code in effect in the jurisdiction in which the Camden Limited 
Partnership is organized, in each item of the Collateral (other than those items
of Collateral which, individually or in the aggregate, are not material) has 
been duly taken.

           (h) The Pledgor's principal place of business and chief executive 
office and the place where its records concerning the Collateral are kept is 
located at the address set forth with its signature below and the Pledgor will 
not change such address or remove such records without 30 days' prior written 
notice to the Collateral Agent.

        6. Covenants. The Pledgor covenants and agrees with the Collateral Agent
and the GP Lender that from and after the date of this Agreement and until the 
Obligations are fully satisfied:

           (a) Further Documentation; Pledge of Instruments. At any time and 
from time to time, upon the written request of the Collateral Agent and at the 
sole expense of the Pledgor, the Pledgor will promptly and duly execute and 
deliver any and all such further instruments and documents and take such further
action as the Collateral Agent may reasonably request for the purpose of 
obtaining or preserving the full benefits of this Agreement and of the rights 
and powers herein granted, including, without limitation, the filing of any 
financing or continuation statements under the Uniform Commercial Code in effect
in any jurisdiction with respect to the Lien granted hereby. The Pledgor also 
hereby authorizes the Collateral Agent to file any such financing or 
continuation statement without the signature of the Pledgor to the extent 
permitted by applicable law. The
<PAGE>
 
                                                                               8

Pledgor and the Collateral Agent agree that a carbon, photographic or other 
reproduction of this Agreement or a financing statement is sufficient as a 
financing statement. If any amount payable under or in connection with any of 
the Collateral shall be or become evidenced by any promissory note or other 
Instrument or Chattel Paper, such note, Instrument or Chattel Paper shall be 
immediately delivered to the Collateral Agent, duly endorsed in a manner 
satisfactory to the Collateral Agent, to be held as Collateral pursuant to this
Agreement.

        (b) Maintenance of Records. The Pledgor will keep and maintain at its 
own cost and expense satisfactory and complete records of the 
Collateral including, without limitation, a record of all payments received and 
all credits granted with respect to the Collateral and all other dealings with 
the Collateral. The Pledgor will mark its books and records pertaining to the 
Collateral to evidence this Agreement and the security interests granted 
hereby. For the further security of the Collateral Agent and the GP Lender, the 
Pledgor agrees that the Collateral Agent, for the benefit of the GP Lender,
shall have a special property interest in all of the Pledgor's books and records
pertaining to the Collateral and the Pledgor shall, upon the acceleration of the
Loans and any other amounts due under the Linden GP Loan Agreement or the
Collateral Security Documents, deliver and turn over any books and records to
the Collateral Agent or to its representatives at any time on demand of the
Collateral Agent. The Collateral Agent in turn agrees to provide the Pledgor
with reasonable access to such records during normal business hours and also
with such copies of such records (made at the Pledgor's expense) as the Pledgor
may reasonably request, such access and such copies to be available subject to
the Collateral Agent's prior right to use such records to enforce its rights in
or to realize upon the Collateral.

        (c) Limitation on Rights and Liens with Respect to Collateral. The 
Pledgor will not (i) vote to enable, or take any other action to permit, the 
Camden Limited Partnership to issue any other partnership interests in the 
Camden Limited Partnership (other than the interest of the Limited Partner (as 
defined in the Camden Limited Partnership Loan Agreement)) or grant any right to
purchase or otherwise acquire any existing or other partnership interests in the
Camden Limited Partnership, except as contemplated by the Camden Capital 
Contribution Agreement and the Amended and Restated Partnership Agreement, (ii) 
sell, assign, transfer or exchange, or otherwise dispose of, or grant any option
with respect to, or mortgage, pledge or hypothecate its interest in, the 
Collateral, or attempt, offer or contract to do so, except as provided herein 
and as contemplated by the Camden Capital Contribution Agreement
<PAGE>
 
                                                                               9

and the Amended and Restated partnership Agreement, or (iii) create, incur, 
permit or suffer to exist, and will defend the Collateral against and will take 
such other action as is necessary to remove, any Lien or claim on or to the 
Collateral, other than Permitted Liens, and will defend the right, title and 
interest of the Collateral Agent in and to any of the Pledgor's rights to the 
Collateral and in and to the Proceeds thereof against the claims and demands of 
all Persons whomsoever.

        (d) Regulatory Filings. If and to the extent required, the Pledgor will 
file this Agreement, and any other agreements or instruments which are required 
to be filed with any regulatory body in accordance with the rules and 
regulations of such regulatory body.

        (e) Notices. The Pledgor will advise the Collateral Agent and the GP 
Lender promptly, in reasonable detail, of any Lien or claim made or asserted 
against any of the Collateral.

        (f) Change of Name. The Pledgor will not change its name or identity in 
any manner which might make any financing statement filed hereunder seriously 
misleading unless the Pledgor shall have given the Collateral Agent and the GP 
Lender at least 30 days' prior written notice thereof.

        (g) Compliance with Laws, etc. The Pledgor will comply in all material 
respects with all acts, rules, regulations, orders, decrees and directions of 
any Governmental Authority applicable to the Collateral or any part thereof, 
except any thereof the non-compliance with which could not reasonably be 
expected to have a material adverse effect on the Collateral or any part 
thereof.

        (h) Taxes and Claims. The Pledgor shall pay and discharge all taxes, 
assessments and governmental charges or levies imposed on the Camden Limited 
Partnership or on its income or profits or on any of its property prior to the 
date on which penalties attach thereto, and all lawful claims which, if unpaid, 
might become a Lien upon the property of the Camden Limited Partnership. The 
Pledgor shall have the right, however, to contest in good faith the validity or 
amount of any such tax, assessment, charge, levy or claim by proper proceedings 
timely instituted, and may permit the taxes, assessments, charges, levies or 
claims so contested to remain unpaid during the period of such contest if: (i) 
the Pledgor diligently prosecutes such contest, (ii) during the period of such 
contest the enforcement of any contested item is effectively stayed; provided, 
however, that this clause (ii) shall apply to contested income taxes of a 
Partner (as defined in the Camden Limited Partnership
<PAGE>
 
                                                                              10

Loan Agreement) only if the failure to pay such tax may then become a Lien on 
the Collateral and (iii) in the reasonable opinion of the Collateral Agent, such
contest does not involve any substantial danger of the sale, forfeiture or loss
of any part of the Collateral, title thereto or any interest therein. The 
Pledgor will promptly pay or cause to be paid any valid, final judgment 
enforcing any such tax, assessment, charge, levy or claim and cause the same to 
be satisfied of record.

        7. Collateral Agent's Appointment as Attorney-in-Fact. (a) Powers. The 
Pledgor hereby irrevocably constitutes and appoints the Collateral Agent and any
officer or agent thereof, with full power of substitution, as its true and 
lawful attorney-in-fact with full irrevocable power and authority in the place 
and stead of the Pledgor and in the name of the Pledgor or in its own name, from
time to time in the Collateral Agent's discretion, for the purpose of carrying 
out the terms of this Agreement, to take any and all appropriate action and to 
execute any and all documents and instruments which may be necessary or 
desirable to accomplish the purposes of this Agreement, and, without limiting 
the generality of the foregoing, the Pledgor hereby gives the Collateral Agent 
the power and right, on behalf of the Pledgor, without notice to or assent by 
the Pledgor to do the following:

           (i) to pay or discharge taxes and Liens levied or placed on or 
threatened against the Collateral; and

           (ii) upon the occurrence and during the continuance of any Default or
Event of Default, (A) to direct any party liable for any payment under any of 
the Collateral to make payment of any and all moneys due or to become due 
thereunder directly to the Collateral Agent or as the Collateral Agent shall 
direct; (B) to ask or demand for, collect, receive payment of and receipt for, 
andy and all moneys, claims and other amounts due or to become due at any time 
in respect of or arising out of any Collateral; (C) in the name of the Pledgor 
or its own name or otherwise, to take possession of and endorse and collect any 
checks, drafts, notes, acceptances or other instruments for the payment of 
moneys due with respect to the Collateral; (D) to file any claim or to commence 
and prosecute any suits, actions or proceedings in any court of law or equity or
otherwise as deemed appropriate by the Collateral Agent to collect the 
Collateral or any part thereof and to enforce any other right in respect of any 
Collateral; (E) to defend any suit, action or proceeding brought against the 
Pledgor with respect to any Collateral; (F) to settle, compromise or adjust any 
suit, action or proceeding described in clause (D) or (E) above and, in 
connection therewith, to give such discharges or releases as the Collateral 
Agent may deem appropriate; and (G) generally, to sell, transfer, pledge and 
make any agreement with respect to or otherwise deal
<PAGE>
 
                                                                              11

with any of the Collateral as fully and completely as though the Collateral 
Agent were the absolute owner thereof for all purposes, and to do, at the 
Collateral Agent's option and the Pledgor's expense, at any time, or from time 
to time, all acts and things which the Collateral Agent reasonably deems 
necessary to protect, preserve or realize upon the Collateral and the Liens of 
the Collateral Agent and the GP Lender thereon and to effect the intent of this 
Agreement, all as fully and effectively as the Pledgor might do.

        The Pledgor hereby ratifies all that said attorneys shall lawfully do or
cause to be done by virtue hereof. This power of attorney is a power coupled 
with an interest and shall be irrevocable.

           (b) Other Powers. The Pledgor also authorizes the Collateral Agent, 
at any time and from time to time, to execute, in connection with the sale 
provided for in Section 8 hereof, any endorsements, assignments or other 
instruments of conveyance or transfer with respect to the Collateral.

           (c) No Duty on Part of the Collateral Agent and the GP Lender. The 
powers conferred on the Collateral Agent and the GP Lender hereunder are solely
to protect the interests of the Collateral Agent and the GP Lender in the 
Collateral and shall not impose any duty upon any of them to exercise any such 
powers. The Collateral Agent and the GP Lender shall be accountable only for 
amounts that they actually receive as a result of the exercise of such powers, 
and neither they nor any of their officers, directors, employees or agents shall
be responsible to the Pledgor for any act or failure to act hereunder, except 
for their own gross negligence or willful misconduct.

        8. Performance by Collateral Agent of Pledgor's Obligations; Rights of 
Pledgor Prior to Default or Event of Default. (a) If the Pledgor fails to 
perform or comply with any of its agreements contained herein and the Collateral
Agent, as provided for by the terms of this Agreement, shall itself perform or 
comply, or otherwise cause performance or compliance, with such agreement, the 
expenses of the Collateral Agent incurred in connection with such performance or
compliance, together with interest thereon at a rate per annum equal to the 
interest rate then applicable to the Loans plus 2% shall be payable by the 
Pledgor to the Collateral Agent on demand and shall constitute Obligations 
secured hereby.

           (b) Unless and until a Default or Event of Default shall have 
occurred and be continuing, the Pledgor shall be entitled to take any action, or
omit to take any action, as the Pledgor may deem necessary or advisable or 
convenient with respect to the Collateral; provided that no action shall be 
taken, or omitted to be taken, by the Pledgor which would (i) violate or be 
inconsistent with any of the terms of this
<PAGE>
 
                                                                              12

Agreement, the Linden GP Loan Agreement, the Camden Limited Partnership Loan 
Agreement or the Camden General Partner Loan Agreement, or (ii) give rise to any
defense, counterclaim or offset in favor of the Pledgor against the Collateral 
Agent or the GP Lender or to any claim or action against the Pledgor or (iii) 
have the effect of materially impairing the position or interests of the 
Collateral Agent or the GP Lender or of the value of the Collateral. All such 
rights of the Pledgor to take or omit to take any action shall cease upon the 
occurrence of a Default or an Event of Default and the continuance thereof. 

        9. Remedies, Rights Upon the Occurrence of a Default or an Event of 
Default. (a) If any Default or Event of Default shall occur and be continuing, 
the Collateral Agent, on behalf of the GP Lender, may exercise, in addition
to all other rights and remedies granted to them in this Agreement and in any 
other instrument or agreement securing, evidencing or relating to the 
Obligations, all rights and remedies of a secured party under the Code, with the
express obligation of the Pledgor to cooperate with the Collateral Agent in all 
respects as are necessary to perfect such rights and remedies. Without limiting 
the generality of the foregoing, the Collateral Agent, without demand of 
performance or other demand, presentment, protest, advertisement or notice of 
any kind (except the notice specified below of time and place of public or 
private sale) to or upon the Pledgor or any other Person (all and each of which 
demands, defenses, advertisements and notices are hereby waived), may in such 
circumstances (i) exercise all voting, partnership and other rights of the 
Pledgor in its capacity as a partner in the Camden Limited Partnership as fully 
and completely as though the Collateral Agent were the absolute owner of the 
Pledgor's partnership interest in the Camden Limited Partnership, (ii) transfer 
all or any part of the Collateral into the Collateral Agent's name or the name 
of its nominee or nominees, (iii) forthwith collect, receive, appropriate and 
realize upon the Collateral, or any part thereof, and/or may forthwith sell, 
lease, assign, give option or options to purchase, or otherwise dispose of and 
deliver said Collateral or any part thereof (or contract to do any of the 
foregoing), in one or more parcels at public or private sale or sales, at any 
exchange, broker's board or office of the Collateral Agent or the GP Lender or 
elsewhere upon such terms and conditions as it may deem advisable and at such 
prices as it may deem best, for cash or on credit or for future delivery without
assumption of any credit risk. The Collateral Agent or the GP Lender shall have 
the right upon any such public sale or sales, and, to the extent permitted by 
law, upon any such private sale  or sales, to purchase the whole or any part of 
said Collateral so sold, free of any right or equity of redemption in the 
Pledgor, which right or equity is hereby waived or released. The Pledgor further
agrees, at the Collateral Agent's request, to assemble the Collateral and make 
it available to the Collateral Agent at places which the Collateral Agent shall 
reasonably select, whether at the Pledgor's premises or 
<PAGE>
 
                                                                              13

elsewhere. The Collateral Agent shall apply the net proceeds of any collection, 
recovery, receipt, appropriation, realization or sale of or with respect to the 
Collateral, after deducting all reasonable costs and expenses of every kind 
incurred therein or incidental to the care, safe keeping or otherwise of any or
all of the Collateral or in any way relating to the rights of the Collateral
Agent and the GP Lender hereunder, including reasonable attorneys' fees and
legal expenses, to the payment in whole or in part of the Obligations in
accordance with the Camden Collateral Agency Agreement, the Pledgor remaining
liable for any deficiency remaining unpaid after such application, and only
after so applying such net proceeds and after the payment by the Collateral
Agent of any other amount required by any provision of law, including 
Section 9-504(1)(c) of the Code, need the Collateral Agent account for the
surplus, if any, to the Pledgor. To the extent permitted by applicable law, the
Pledgor waives all claims, damages, and demands against the Collateral Agent or
the GP Lender arising out of the repossession, retention or sale of the
Collateral. The Pledgor agrees that the Collateral Agent need not give more than
10 days' notice (which notification shall be deemed given when mailed, postage
prepaid, addressed to the Pledgor at its address referred to in paragraph 11
hereof) of the time and place of any public sale or of the time after which a
private sale may take place and that such notice is reasonable notification of
such matters.

           (b) The Pledgor also agrees to pay all costs of the Collateral Agent,
including attorneys' fees, incurred with respect to the collection of any of the
Obligations and the enforcement of any of the rights of the Collateral Agent or 
the GP Lender hereunder.

           (c) The Pledgor hereby waives presentment, demand, protest or any 
notice (to the extent permitted by applicable law) of any kind in connection 
with this Agreement or any Collateral and expressly waives and agrees not to 
assert any rights or privileges it may acquire under Section 9-112 of the Code.

           (d) The Pledgor consents and agrees that the Collateral Agent may 
exercise any or all of its rights and remedies hereunder notwithstanding any 
provision in the Camden Limited Partnership Agreement which purports to limit 
the transferability of partnership interests without the consent of any 
partners.

        10. Limitation on Duties in Respect of Collateral; Limitations on 
Collateral Agent's Obligations. (a) Beyond the use of reasonable care in the 
custody thereof, the Collateral Agent shall not have any duty as to any 
Collateral in its possession or control or in the possession or control of any 
agent or nominee of it or any income thereon or as to the preservation of rights
against prior parties or any other rights pertaining thereto.
<PAGE>
 
                                                                              14

            (b) It is expressly agreed by the Pledgor that, anything herein to 
the contrary notwithstanding, the Pledgor shall remain liable under each of its 
contracts or other agreements, including, without limitation, the Camden Limited
Partnership Agreement and the Camden General Partner Partnership Agreement, to 
observe and perform all the conditions and obligations to be observed and 
performed by it thereunder, all in accordance with and pursuant to the terms of 
the provisions thereof. The Collateral Agent and the GP Lender shall not have 
any obligation or liability by reason of or arising out of this Agreement, nor 
shall the Collateral Agent or the GP Lender be required or obligated in any 
manner to perform or fulfill any of the obligations of the Camden Limited 
Partnership or the Pledgor, or to make any payment, or to make any inquiry as to
the nature or the sufficiency of any payment received by it or the sufficiency 
of any performance by the Pledgor, or to present or file any claim, or to take 
any action to collect or enforce any performance or the payment of any amounts 
which may have been assigned to it or to which it may be entitled at any time 
or times.

        11. Notices. Notices hereunder may be given by mail, by telex or by 
facsimile transmission, addressed or transmitted to, in the case of the Pledgor,
as set forth with its signature hereto, in the case of the Collateral Agent, at
such Person's address or transmission number set forth in the Camden Limited 
Partnership Loan Agreement and in the case of the GP Lender, as set forth in the
Linden GP Loan Agreement, and shall be effective as provided for in the Linden 
GP Loan Agreement. The Pledgor, the Collateral Agent and the GP Lender
each may change its address and transmission number by written notice to the
other two parties.

        12. Severability. Any provision of this Agreement which is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the 
remaining provisions hereof, and without affecting the validity or 
enforceability of any provision in any other jurisdiction. Where provisions of 
any law or regulation resulting in such prohibition or unenforceability may be 
waived they are hereby waived by the Pledgor and the Collateral Agent and the GP
Lender to the full extent permitted by law so that this Agreement shall be 
deemed a valid and binding agreement, and the security interest created hereby 
shall constitute a continuing first lien (other than as to the Permitted Liens) 
on and first (other than as to the Permitted Liens) perfected security interest 
in the Collateral, in each case enforceable in accordance with its terms.

        13. Release of Lien. Upon receipt by the Collateral Agent from the GP 
Lender of a written notice stating that the provisions of Section 9.3 of the 
Linden GP Loan Agreement with


<PAGE>

                                                                              15
 
respect to the release of Collateral have been fulfilled, (i) the security 
interest in favor of the GP Lender created pursuant to Section 2 shall forthwith
terminate and (ii) the Collateral Agent, upon request by the Pledgor shall 
execute and deliver, at the Pledgor's expense, all such documentation reasonably
necessary to release the lien in its favor in and to this Agreement.

        14. Section Headings. the section headings used in this Agreement are 
for convenience of reference only and are not to affect the construction hereof 
or be taken into consideration in the interpretation hereof.

        15. No Waiver; Cumulative Remedies. The Collateral Agent and the GP 
Lender shall not by any act (except pursuant to the execution of a written 
instrument pursuant to Section 16 hereof), delay, indulgence, omission or 
otherwise be deemed to have waived any right or remedy hereunder or to have 
acquiesced in any Default or Event of Default or in any breach of any of the  
terms and conditions hereof. No failure to exercise, nor any delay in 
exercising, on the part of the Collateral Agent of the GP Lender, any right, 
remedy, power or privilege hereunder shall operate as a waiver thereof. No 
single or partial exercise of any right, remedy, power or privilege hereunder 
shall preclude any other or further exercise thereof or the exercise of any 
other right, remedy, power or privilege. A waiver by the Collateral Agent or the
GP Lender of any right or remedy hereunder on any one occasion shall not be 
construed as a bar to any right or remedy which the Collateral Agent or the GP 
Lender would otherwise have on any future occasion. The rights and remedies 
herein provided are cumulative, may be exercised singly or concurrently and are 
not exclusive of any rights or remedies provided by law.

        16. Waivers and Amendments; Successors and Assigns; Governing Law. None 
of the terms or provisions of this Agreement may be waived, amended, 
supplemented or otherwise modified except by a written instrument executed by 
the Pledgor and the Collateral Agent. This Agreement shall be binding upon the 
successors and assigns of the Pledgor and shall inure to the benefit of the 
Collateral Agent and the GP Lender and their respective successors and assigns. 
This Agreement shall be governed by, and construed and interpreted in accordance
with, the laws of the State of New York.

        17. Powers Coupled with and Interest. All authorizations and agencies 
herein contained with respect to the Collateral are irrevocable and powers 
coupled with an interest.

        18. Indemnification. The Pledgor agrees to pay, indemnify and hold the 
Collateral Agent, the GP Lender and their respective affiliates, directors 
and/or officers harmless from and against any and all liabilities, obligations, 
losses,
<PAGE>

                                                                              16

damages, penalties, actions, judgements, suits, costs, expenses or disbursements
of any kind whatsoever which may at any time (including, without limitation, at
any time following the payment of the Obligations) be imposed on, incurred by or
asserted against any such Person in any way relating to or arising out of this
Agreement or the Collateral, or any documents contemplated by or referred to
herein or the transactions contemplated hereby or thereby (all of the foregoing,
collectively, the "indemnified liabilities"), provided, that the Pledgor shall
have no obligation hereunder to any such Person with respect to indemnified
liabilities arising from (i) the gross negligence or willful misconduct of any
such Person, (ii) legal proceedings commenced against any such Person by any
security holder or creditor of any such Person arising out of and based upon
rights afforded any such security holder or creditor solely in its capacity as
such, or (iii) legal proceedings commenced against any such Person by any
Permitted Assignee or Transferee. The agreements in this subsection shall
survive repayment of the Obligations and all other amounts payable hereunder.

        19. Collateral Agent Not a Partner.  Nothing contained in this Agreement
shall be construed or interpreted (a) to transfer to the Collateral Agent or 
the GP Lender any of the rights and obligations of a partner of the Camden 
Limited Partnership other than the rights of collateral security in and to the 
Collateral described herein or (b) to constitute the Collateral Agent or the GP
Lender a partner of the Camden Limited Partnership.

        20.  Limitation of Liability. The Collateral Agent and the GP Lender 
agree that the liability of the Pledgor under this Agreement and the Obligations
shall be limited to the Collateral (as defined herein and in the Linden GP Loan 
Agreement) and the rights and remedies of the Collateral Agent and the GP Lender
against the Collateral (as defined herein and in the Linden GP Loan Agreement) 
pursuant to this Agreement and the other Transaction Documents, and in no event 
shall the Pledgor or any Partner (as defined in the Camden Limited Partnership 
Loan Agreement) or any officer, director, partner or Affiliate thereof be 
personally liable or obligated for any such obligations (except in the case of 
the Borrower, to the extent set forth in Section 3.11 of the Linden GP Loan 
Agreement). Nothing herein shall limit the full recourse of the Collateral Agent
and the GP Lender, to the Collateral (as defined herein and in the Linden GP 
Loan Agreement) pursuant to this Agreement or the other Transaction Documents or
be deemed to constitute a waiver of liability, if any, of any Person for damages
for fraud or for any knowing misrepresentation made by such Person herein or in 
any certificate or document delivered pursuant hereto.

<PAGE>
 
                                                                              17

        21. Counterparts. This Agreement may be executed by one or more of the
parties to this Agreement on any number of separate counterparts, and all of
said counterparts taken together shall be deemed to constitute one and the same
instrument.

        IN WITNESS WHEREOF, the Pledgor has caused this Agreement to be duly 
executed and delivered as of the date first set forth above.

                                        COGEN TECHNOLOGIES CAMDEN GP
                                         LIMITED PARTNERSHIP
        
                                        By:  Cogen Technologies
                                                Camden, Inc.

                                             By: /s/???????????????
                                                -------------------------
                                                Title: Vice President

                                                1600 Smith Street
                                                Suite 5000
                                                Houston, Texas 77002
                                                Attention: Robert C. McNair

Acknowledgement of Written
  Notification by Registered
  Pledgee:

GENERAL ELECTRIC CAPITAL CORPORATION

By: /s/ John A. ????????????
   ----------------------------------
   Title: Senior Vice President and Manager of
           Energy Project Financing
<PAGE>
 
                                                                      SCHEDULE I


                          FINANCING STATEMENT FILINGS


                                Jurisdiction                  Document  
Debtor                           Where Filed                    Filed
- ------                          ------------                  --------

General Partner              Secretary of State            UCC-1 Financing
                             of Delaware                   Statement        

General Partner              Secretary of State            UCC-1 Financing
                             of New Jersey                 Statement   

General Partner              County Clerk,                 UCC-1 Financing     
                             Camden County, New Jersey     Statement   

General Partner              Secretary of State            UCC-1 Financing
                             of New York                   Statement        

General Partner              City Registrar, New           UCC-1 Financing
                             York County                   Statement        

General Partner              County Clerk, Schenectady     UCC-1 Financing
                             County, New York              Statement        

General Partner              Secretary of State            UCC-1 Financing
                             of South Carolina             Statement        

General Partner              County Clerk, Greenville      UCC-1 Financing
                             County, South Carolina        Statement        

General Partner              Secretary of State            UCC-1 Financing
                             of Texas                      Statement        

<PAGE>
 
                                                                   EXHIBIT 10.80

                      COGEN PLEDGE AND SECURITY AGREEMENT

        PLEDGE and SECURITY AGREEMENT, dated as of the Conformed Agreement Date,
made by COGEN TECHNOLOGIES CAMDEN, INC., a Texas corporation (the "Pledgor" or
"Cogen"), the sole general partner of Cogen Technologies Camden GP Limited
Partnership (the "General Partner"), a Delaware limited partnership and the sole
general partner of Camden Cogen L.P. (the "Limited Partnership"), a Delaware
limited partnership, in favor of General Electric Capital Corporation ("GE
Capital"), as collateral agent for the LP Agent (as defined below) and the LP
Lenders (as defined below) under the Limited Partnership Loan Agreement (as
defined below) and for the GP Lender (as defined below) under the General
Partner Loan Agreement (as defined below) (in such capacity, the "Collateral
Agent").

                             W I T N E S S E T H :

        WHEREAS, pursuant to the Construction and Term Loan Agreement, dated as 
of the Conformed Agreement Date, among the Limited Partnership, the Lenders from
time to time party thereto (the "LP Lenders") and GE Capital, as agent for the
LP Lenders (in such capacity, the "LP Agent") (as the same may be amended,
supplemented or otherwise modified from time to time, the "Limited Partnership
Loan Agreement"), the LP Lenders have agreed to make loans (the "LP Loans") to,
and GE Capital has agreed to issue letters of credit (the "Letters of Credit")
for the account of, the Limited Partnership; and

        WHEREAS, pursuant to the Term Loan Agreement, dated as of the Conformed 
Agreement Date, between the General Partner and General Electric Capital 
Corporation (in such capacity, the "GP Lender") (as the same may be amended, 
supplemented or otherwise modified from time to time, the "General Partner Loan 
Agreement", together with the Limited Partnership Loan Agreement, the "Loan 
Agreements"), the GP Lender has agreed to make certain loans (the "GP Loans", 
together with the LP Loans, the "Loans") for the account of the General Partner;
and

        WHEREAS, it is a condition precedent to (i) the obligation of the LP 
Lenders to make LP Loans to, and of GE Capital to issue Letters of Credit for 
the account of, the Limited Partnership under the Limited Partnership Loan 
Agreement

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and (ii) the obligation of the GP Lender to make the GP Loans to the General 
Partner under the General Partner Loan Agreement that the Pledgor shall have 
executed and delivered this Pledge and Security Agreement; and

        NOW, THEREFORE, in consideration of the premises and to induce the LP 
Lenders, the LP Agent and the GP lender (collectively, the "Secured Parties") to
enter into the Loan Agreements and to make Loans and to issue Letters of Credit 
thereunder, the Pledgor hereby agrees with the Collateral Agent as follows:

        1. Defined Terms. (a) All capitalized terms used herein which are 
defined in the Limited Partnership Loan Agreement shall have their respective 
meanings as therein defined, unless such terms are defined herein. All terms 
defined herein or in the Loan Agreements in the singular shall have the same 
meanings when used in the plural and vice versa.

        (b) The following terms defined in Article 9 of the Uniform Commercial 
Code as in effect in the State of New York are used herein as so defined: 
Chattel Paper and Instrument; and the following terms shall have the following 
meanings:

                "Agreement" shall mean this Pledge and Security Agreement, as
        the same may from time to time be amended, supplemented or otherwise
        modified.

                "Code" shall mean the Uniform Commercial Code as the same may 
        from time to time be in effect in the State of New York.

                "Collateral" shall have the meaning assigned to it in Section 2 
        of this Agreement.

                "Obligations" shall mean (i) all the unpaid principal amount of,
        and accrued interest on, the Notes (as defined in the Limited
        Partnership Loan Agreement) and all other obligations and liabilities of
        the Limited Partnership to the LP Agent and the LP Lenders, whether
        direct or indirect, absolute or contingent, due or to become due, or now
        existing or hereafter incurred, which may arise under, out of or in
        connection with the Limited Partnership Loan Agreement, the Notes, the
        Letters of Credit, this Agreement or the other Collateral Security
        Documents, whether on account of principal, interest, reimbursement
        obligations, fees, indemnities, costs, expenses (including, without
        limitation, all fees and disbursements of counsel to the LP Agent and
        the LP Lenders) or otherwise and (ii) all the unpaid principal amount
        of, and accrued interest on, the Notes (as defined in the General
        Partner Loan Agreement) and all other obligations and liabilities of the
        General Partner to the GP Lender, whether direct or indirect, absolute
        or

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        contingent, due or to become due, or now existing or hereafter incurred,
        which may arise under, out of or in connection with the General Partner
        Loan Agreement, the Notes (as defined it the General Partner Loan
        Agreement), this Agreement, or the other Collateral Security Documents
        (as defined in the General Partner Loan Agreement), whether on account
        of principal, interest, reimbursement obligations, fees, indemnities,
        costs, expenses (including, without limitation, all fees and
        disbursements of counsel to the GP Lender) or otherwise.

                "Partnership Agreement": shall mean the collective reference to
        (a) the certificate of limited partnership of the General Partner, dated
        July 26, 1991, filed by Cogen with the Secretary of State of Delaware on
        August 12, 1991, and (b) the Agreement of Limited Partnership of the
        General Partner, dated as of July 26, 1991 between Cogen, as general
        partner, and the Limited Partner (as defined in the General Partner Loan
        Agreement), as limited partner (as amended by the Amendment thereto
        dated as of December 1, 1991), in each case as amended, supplemented or
        otherwise modified from time to time.

                "Proceeds" shall have the meaning assigned to it under the Code
        and, in any event, shall include, but not be limited to, (i) any and all
        proceeds of any insurance, indemnity, warranty or guaranty payable to
        the Pledgor from time to time with respect to any of the Collateral,
        (ii) any and all payments (in any form whatsoever) made or due and
        payable to the Pledgor from time to time in connection with any
        requisition, confiscation, condemnation, seizure or forfeiture of all or
        any part of the Collateral by any Governmental Authority (or any person
        acting under color of Governmental Authority) and (iii) any and all
        other amounts from time to time paid or payable under or in connection
        with any of the Collateral.

        2. Assignment and Grant of Security Interest. As collateral security for
the prompt and complete payment and performance when due (whether at the stated 
maturity, by acceleration or otherwise) of the Loans and all other Obligations, 
the Pledgor hereby sells, assigns, conveys, mortgages, pledges, hypothecates and
transfers to the Collateral Agent for the ratable benefit of the Secured 
Parties, and hereby grants to the Collateral Agent of the ratable benefit of 
the Secured Parties a continuing first (other than as to Permitted Liens) 
priority security interest in, to and under all of the following property now 
owned or at any time hereafter acquired by the Pledgor or in which the Pledgor 
now has or at any time in the future may acquire any rights, title or interest 
(all of which being hereinafter collectively called the "Collateral"): 

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                (i) all right, title and interest of the Pledgor in the General 
        Partner;

                (ii) any and all moneys due and to become due to the Pledgor now
        or in the future by way of a distribution made to the Pledgor in its
        capacity as a partner of the General Partner;

                (iii) any and all moneys due or to become due to the Pledgor now
        or in the future by virtue of the Pledgor's interest as a partner in the
        General Partner;

                (iv) any other property of the General partner to which the
        Pledgor now or in the future may be entitled in its capacity as a
        partner of the General Partner by way of distribution, return of capital
        otherwise;

                (v) any other claim which the Pledgor now has or may in the
        future acquire in its capacity as a partner of the General Partner
        against the General Partner and its property; and

                (vi) to the extent not otherwise included, all Proceeds of any 
        or all of the foregoing.

        3. Registration of Pledge. Concurrently with the execution of this 
Agreement, the Pledgor shall send written instructions in the form of Exhibit A 
hereto to the General Partner, and shall cause the General Partner to, and the 
General Partner shall, deliver to the Collateral Agent the Initial Transaction 
Statement in the form of Exhibit B hereto confirming that the General Partner 
has registered the pledge effected by this Agreement on its books.

        4. Limitations on Distributions. Except as provided in subsection 7.3 of
the General Partner Loan Agreement, so long as this Agreement shall remain in 
full force and effect and no Default or Event of Default under the Loan 
Agreements shall have occurred and be continuing, any distributions of cash or 
other property payable in respect of the Collateral shall be paid to the
Pledgor. After the occurrence of a Default or Event of Default and for so long
as such Default or Event of Default is continuing, such distributions shall be
applied by the Collateral Agent to the payment in whole or in part of the
Obligations in accordance with the Collateral Agency Agreement.

        5. Representations and Warranties. The Pledgor hereby represents and 
warrants that:

                (a) The Pledgor (i) is a corporation duly organized, validly
        existing and in good standing under the laws of the State of Texas,
        (ii) has all the full power and authority and the legal right to own its
        properties, to conduct its
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        business as now conducted and as proposed to be conducted by it, to
        execute, deliver and perform this Agreement and to pledge its interest
        in the Collateral pursuant to this Agreement and (iii) is duly qualified
        to do business in the States of New Jersey and Texas, the only
        jurisdictions in which the conduct of its business or the ownership or
        lease of its assets require such qualification. The Pledgor is the sole
        general partner of the General Partner, and its partnership interest in
        the General Partner is 81.945%. Complete and correct copies of the
        Partnership Agreement and of all contracts and agreements between the
        Pledgor and the General Partner have been delivered to the Secured
        Parties.

                (b) Except for those filings and registrations required to
        perfect the Liens created by this Agreement, neither the General Partner
        nor the Pledgor is required to obtain any order, consent, approval or
        authorization of, or required to make any declaration or filing with,
        any Governmental Authority or any other Person in connection with the
        execution and delivery of this Agreement and the granting and perfection
        of the security interests pursuant to this Agreement.

                (c) This Agreement has been duly executed and delivered on
        behalf of the Pledgor, and this Agreement constitutes a legal, valid and
        binding obligation of the Pledgor, enforceable against the Pledgor in
        accordance with its terms, except as enforceability may be limited by
        applicable bankruptcy, insolvency, reorganization, moratorium or similar
        laws affecting the enforcement of creditors' rights generally and except
        as enforceability may be subject to general principles of equity,
        whether such principles are applied in a court of equity or at law.

                (d) The execution, delivery and performance of this Agreement
        will not result in any violation of or be in conflict with or constitute
        a default under any term of the Certificate of Incorporation or the By-
        Laws of the Pledgor, or the Partnership Agreement, or of any other
        Requirement of Law or Contractual Obligation applicable to the Pledgor
        except to the extent that the failure to comply therewith could not
        reasonably be expected to (i) have a material adverse effect on the
        Collateral or (ii) materially adversely affect the ability of the
        Pledgor to perform its obligations under this Agreement or the other
        Basic Documents or Transaction Documents (as defined in the General
        Partner Loan Agreement) to which it is a party, or result in the
        creation of any Lien upon any of the properties or revenues of the
        Pledgor pursuant to any such Requirement of Law or Contractual
        Obligation other than the Liens in favor of the Collateral Agent created
        pursuant to this Agreement and in favor of the Secured Parties created
        pursuant to the other Collateral Security Documents.

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                (e) Except for the security interest granted to the Collateral
        Agent pursuant to this Agreement, the Pledgor is the sole owner of the
        Collateral, having good title thereto, free and clear of any and all
        Liens other than Permitted Liens and the Liens in favor of the
        Collateral Agent created pursuant to this Agreement and in favor of the
        Secured Parties created pursuant to the other Collateral Security
        Documents.

                (f) No security agreement, financing statement, equivalent
        security or lien instrument or continuation statement covering all or
        any part of the Collateral is on file or of record in any public office
        or with the General Partner, except such as constitute Permitted Liens
        or may have been or will be filed or registered (i) by the Pledgor in
        favor of the Collateral Agent pursuant to this Agreement and in favor of
        the Secured Parties created pursuant to the other Collateral Security
        Documents or (ii) by the Pledgor in favor of GE Power Funding pursuant
        to the Term Loan Agreement, dated as of February 15, 1990, between Cogen
        Technologies Linden, Ltd. and GE Power Funding.

                (g) This Agreement constitutes a valid and continuing first lien
        (other than as to the Permitted Liens) on and perfected security
        interest in the Pledgor's right, title and interest in and to the
        Collateral (other than those items of Collateral which, individually or
        in the aggregate are not material) in favor of the Collateral Agent,
        prior (other than as to the Permitted Liens) to all other Liens, and is
        enforceable as such against creditors of and purchasers from the
        Pledgor. All action necessary or desirable to protect and perfect such
        security interest, including, but not limited to, the filing of
        financing statements in the jurisdictions referred to on Schedule I to
        this Agreement and the registration of the pledge effected hereby on the
        books of the General Partner in accordance with the provisions of the
        Uniform Commercial Code in effect in the jurisdiction in which the
        General Partner is organized in each item of the Collateral (other than
        those items of Collateral which, individually or in the aggregate, are
        not material) has been duly taken.

                (h) The Pledgor's principal place of business and chief
        executive office and the place where its records concerning the
        Collateral are kept is located at the address set forth with its
        signature below and the Pledgor will not change such address or remove
        such records without 30 days' prior written notice to the Collateral
        Agent.

        6. Covenants. The Pledgor covenants and agrees with the Collateral Agent
and the Secured Parties that from and after the date of this Agreement and until
the Obligations are fully satisfied:




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                (a) Further Documentation; Pledge of Instruments. At any time
        and from time to time, upon the written request of the Collateral Agent
        and at the sole expense of the Pledgor, the Pledgor will promptly and
        duly execute and deliver any and all such further instruments and
        documents and take such further action as the Collateral Agent may
        reasonably request for the purpose of obtaining or preserving the full
        benefits of this Agreement and of the rights and powers herein granted,
        including, without limitation, the filing of any financing or
        continuation statements under the Uniform Commercial Code in effect in
        any jurisdiction with respect to the Lien granted hereby. The Pledgor
        also hereby authorizes the Collateral Agent to file any such financing
        or continuation statement without the signature of the Pledgor to the
        extent permitted by applicable law. The Pledgor and the Collateral Agent
        agree that a carbon, photographic or other reproduction of this
        Agreement or a financing statement is sufficient as a financing
        statement. If any amount payable under or in connection with any of the
        Collateral shall be or become evidenced by any promissory note or other
        Instrument or Chattel Paper, such note, Instrument or Chattel Paper
        shall be immediately delivered to the Collateral Agent, duly endorsed in
        a manner satisfactory to the Collateral Agent, to be held as Collateral
        pursuant to this Agreement.

                (b) Maintenance of Records. The Pledgor will keep and maintain
        at its own cost and expense satisfactory and complete records of the
        Collateral including, without limitation, a record of all payments
        received and all credits granted with respect to the Collateral and all
        other dealings with the Collateral. The Pledgor will mark its books and
        records pertaining to the Collateral to evidence this Agreement and the
        security interests granted hereby. For the further security of the
        Collateral Agent and the Secured Parties, the Pledgor agrees that the
        Collateral Agent, for the ratable benefit of the Secured Parties, shall
        have a special property interest in all of the Pledgor's books and
        records pertaining to the Collateral and the Pledgor shall, upon the
        acceleration of the Loans and any other amounts due under any Loan
        Agreement or the Collateral Security Documents, deliver and turn over
        any books and records to the Collateral Agent or to its representatives
        at any time on demand of the Collateral Agent. The Collateral Agent in
        turn agrees to provide the Pledgor with reasonable access to such
        records during normal business hours and also with such copies of such
        records (made at the Pledgor's expense) as the Pledgor may reasonably
        request, such access and such copies to be available subject to the
        Collateral Agent's prior right to use such records to enforce its rights
        in or to realize upon the Collateral.

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        (c) Limitation on Rights and Liens with Respect to Collateral. The
Pledgor will not (i) vote to enable, or take any other action to permit, the 
General Partner to issue any other partnership interests in the General Partner 
or grant any right to purchase or otherwise acquire any existing or other 
partnership interests in the General Partner, (ii) sell, assign, transfer or 
exchange, or otherwise dispose of, or grant any option with respect to, or 
mortgage, pledge or hypothecate its interest in, the Collateral, or attempt, 
offer or contract to do so, except as provided herein, or (iii) create, incur, 
permit or suffer to exist, and will defend the Collateral against and will take 
such other action as is necessary to remove, any Lien or claim on or to the 
Collateral, other than Permitted Liens, and will defend the right, title and 
interest of the Collateral Agent in and to any of the Pledgor's rights to the 
Collateral and in and to the Proceeds thereof against the claims and demands of 
all Persons whomsoever.

        (d) Regulatory Filings. If and to the extent required, the Pledgor will 
file this Agreement, and any other agreements or instruments which are required 
to be filed with any regulatory body in accordance with the rules and 
regulations of such regulatory body.

        (e) Notices. The Pledgor will advise the Collateral Agent and the 
Secured Parties promptly, in reasonable detail, of any Lien or claim made or 
asserted against any of the Collateral.

        (f) Change of Name. the Pledgor will not change its name or identity in 
any manner which might make any financing statement filed hereunder seriously 
misleading unless the Pledgor shall have given the Collateral Agent and the 
Secured Parties at least 30 days' prior written notice thereof.

        (g) Compliance with Laws, etc. The Pledgor will comply in all material 
respects with all acts, rules, regulations, orders, decrees and directions of 
any Governmental Authority applicable to the Collateral or any part thereof, 
except any thereof the non-compliance with which could not reasonably be 
expected to have a material adverse effect on the Collateral or any part 
thereof.

        (h) Taxes and Claims. The Pledgor shall pay and discharge all taxes, 
assessments and governmental charges or levies imposed on the General Partner or
on its income or profits or on any of its property prior to the date on which 
penalties attach thereto, and all lawful claims which, if unpaid, might become a
Lien upon the property of the General Partner. The Pledgor shall have the right,
however, to contest in good faith the validity or amount of any such


         
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tax, assessment, charge, levy or claim by proper proceedings timely instituted, 
and may permit the taxes, assessments, charges, levies or claims so contested to
remain unpaid during the period of such contest if: (a) the Pledgor diligently 
prosecutes such contest, (b) during the period of such contest the enforcement 
of any contested item is effectively stayed; provided, however, that this clause
(b) shall apply to contested income taxes of a Partner only if the failure to 
pay such tax may then become a Lien on the Collateral and (c) in the reasonable 
opinion of the Collateral Agent, such contest does not involve any substantial 
danger of the sale, forfeiture or loss of any part of the Collateral, title 
thereto or any interest therein. The Pledgor will promptly pay or cause to be 
paid any valid, final judgment enforcing any such tax, assessment, charge, levy
or claim and cause the same to be satisfied of record.


        7. Collateral Agent's Appointment as Attorney-in-Fact. (a) Powers. The 
Pledgor hereby irrevocably constitutes and appoints the Collateral Agent and any
officer or agent thereof, with full power of substitution, as its true and 
lawful attorney-in-fact with full irrevocable power and authority in the place
and stead of the Pledgor and in the name of the Pledgor or in its own name, from
time to time in the Collateral Agent's discretion, for the purpose of carrying 
out the terms of this Agreement, to take any and all appropriate action and to 
execute any and all documents and instruments which may be necessary or 
desirable to accomplish the purposes of this Agreement, and, without limiting 
the generality of the foregoing, the Pledgor hereby gives the Collateral Agent 
the power and right, on behalf of the Pledgor, without notice to or assent by 
the Pledgor to do the following:

           (i) to pay or discharge taxes and Liens levied or placed on or 
threatened against the Collateral; and

           (ii) upon the occurrence and during the continuance of any Default or
Event of Default, (A) to direct any party liable for any payment under any of 
the Collateral to make payment of any and all moneys due or to become due 
thereunder directly to the Collateral Agent or as the Collateral Agent shall 
direct; (B) to ask or demand for, collect, receive payment of and receipt for, 
any and all moneys, claims and other amounts due or to become due at any time in
respect of or arising out of any Collateral; (C) in the name of the Pledgor or 
its own name or otherwise, to take possession of and endorse and collect any 
checks, drafts, notes, acceptances or other instruments for the payment of 
moneys due with respect to the Collateral; (D) to file any claim or to commence 
and prosecute any suits, actions or proceedings in any court of law or equity or
otherwise as deemed appropriate by the Collateral Agent to collect the 
Collateral or any part thereof and to enforce
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        any other right in respect of any Collateral; (E) to defend any suit,
        action or proceeding brought against the Pledgor with respect to any
        Collateral; (F) to settle, compromise or adjust any suit, action or
        proceeding described in clause (D) or (E) above and, in connection
        therewith, to give such discharges or releases as the Collateral Agent
        may deem appropriate; and (G) generally, to sell, transfer, pledge and
        make any agreement with respect to or otherwise deal with any of the
        Collateral as fully and completely as though the Collateral Agent were
        the absolute owner thereof for all purposes, and to do, at the
        Collateral Agent's option and the Pledgor's expense, at any time, or
        from time to time, all acts and things which the Collateral Agent
        reasonably deems necessary to protect, preserve or realize upon the
        Collateral and the Liens of the Collateral Agent and the Secured
        Parties thereon and to effect the intent of this Agreement, all as fully
        and effectively as the Pledgor might do.

                The Pledgor hereby ratifies all that said attorneys shall 
lawfully do or cause to be done by virtue hereof. This power of attorney is a 
power coupled with an interest and shall be irrevocable.

                (b) Other Powers. The Pledgor also authorizes the Collateral 
Agent, at any time and from time to time, to execute, in connection with the 
sale provided for in Section 9 hereof, any endorsements, assignments or other
instruments of conveyance or transfer with respect to the Collateral.

                (c) No Duty on Part of the Collateral Agent and the Secured
Parties. The powers conferred on the Collateral Agent and the Secured Parties
hereunder are solely to protect the interests of the Collateral Agent and the
Secured Parties in the Collateral and shall not impose any duty upon any of them
to exercise any such powers. The Collateral Agent and the Secured Parties shall
be accountable only for amounts that they actually receive as a result of the
exercise of such powers, and neither they nor any of their officers, directors,
employees or agents shall be responsible to the Pledgor for any act or failure
to act hereunder, except for their own gross negligence or willful misconduct.

                8. Performance by Collateral Agent of Pledgor's Obligations;
Rights of Pledgor Prior to Default or Event of Default. (a) If the Pledgor fails
to perform or comply with any of its agreements contained herein and the
Collateral Agent, as provided for by the terms of this Agreement, shall itself
perform or comply, or otherwise cause performance or compliance, with such
agreement, the expenses of the Collateral Agent incurred in connection with such
performance or compliance, together with interest thereon at a rate per annum
equal to the Default Rate
 
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shall be payable by the Pledgor to the Collateral Agent on demand and shall 
constitute Obligations secured hereby.

        (b) Unless and until a Default or Event of Default shall have occurred 
and be continuing, the Pledgor shall be entitled to take any action, or omit to 
take any action, as the Pledgor may deem necessary or advisable or convenient 
with respect to the Collateral; provided that no action shall be taken, or 
omitted to be taken, by the Pledgor which would (i) violate or be inconsistent 
with any of the terms of this Agreement or the Loan Agreements, or (ii) give 
rise to any defense, counterclaim or offset in favor of the Pledgor against the 
Collateral Agent or the Secured Parties or to any claim or action against the 
Pledgor or (iii) have the effect of materially impairing the position or 
interests of the Collateral Agent or the Secured Parties or of the value of the 
Collateral. All such rights of the Pledgor to take or omit to take any action 
shall cease upon the occurrence of a Default or an Event of Default and the 
continuance thereof.

        9. Remedies, Rights Upon the Occurrence of a Default or an Event of 
Default.  (a) If any Default or Event of Default shall occur and be continuing, 
the Collateral Agent, on behalf of the Secured Parties, may exercise, in 
addition to all other rights and remedies granted to them in this Agreement and 
in any other instrument or agreement securing, evidencing or relating to the 
Obligations, all rights and remedies of a secured party under the Code, with the
express obligation of the Pledgor to cooperate with the Collateral Agent in all 
respects as are necessary to perfect such rights and remedies. Without limiting 
the generality of the foregoing, the Collateral Agent, without demand of
performance or other demand, presentment, protest, advertisement or notice of
any kind (except the notice specified below of time and place of public or
private sale) to or upon the Pledgor or any other Person (all and each of which
demands, defenses, advertisements and notices are hereby waived), may in such
circumstances (i) exercise all voting, partnership and other rights of the
Pledgor in its capacity as a partner in the General Partner as fully and
completely as though the Collateral Agent were the absolute owner of the
Pledgor's partnership interest in the General Partner, (ii) transfer all or any
part of the Collateral into the Collateral Agent's name or the name of its
nominee or nominees, (iii) forthwith collect, receive, appropriate and realize
upon the Collateral, or any part thereof, and/or may forthwith sell, lease,
assign, give option or options to purchase, or otherwise dispose of and deliver
said Collateral or any part thereof (or contract to do any of the foregoing), in
one or more parcels at public or private sale or sales, at any exchange,
broker's board or office of the Collateral Agent or any Secured Party or
elsewhere upon such terms and conditions as it may deem advisable and at such
prices as it may deem best, for cash or on credit or for future delivery without
assumption of any credit risk. The Collateral Agent or any Secured Party shall
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have the right upon any such public sale or sales, and, to the extent permitted 
by law, upon any such private sale or sales, to purchase the whole or any part 
of said Collateral so sold, free of any right or equity of redemption in the 
Pledgor, which right or equity is hereby waived or released. The Pledgor further
agrees, at the Collateral Agent's request, to assemble the Collateral and make 
it available to the Collateral Agent at places which the Collateral Agent shall 
reasonably select, whether at the Pledgor's premises or elsewhere. The 
Collateral Agent shall apply the net proceeds of any collection, recovery, 
receipt, appropriation, realization or sale of or with respect to the 
Collateral, after deducting all reasonable costs and expenses of every kind 
incurred therein or incidental to the care, safe keeping or otherwise of any or 
all of the Collateral or in any way relating to the rights of the Collateral 
Agent and the Secured Parties hereunder, including reasonable attorneys' fees 
and legal expenses, to the payment in whole or in part of the Obligations in 
accordance with the Collateral Agency Agreement, the Pledgor remaining liable 
for any deficiency remaining unpaid after such application, and only after so 
applying such net proceeds and after the payment by the Collateral Agent of any 
other amount required by any provision of law, including Section 9-504(1)(c) of 
the Code, need the Collateral Agent account for the surplus, if any, to the 
Pledgor. To the extent permitted by applicable law, the Pledgor waives all 
claims, damages, and demands against the Collateral Agent or any Secured Party 
arising out of the repossession, retention or sale of the Collateral. The 
Pledgor agrees that the Collateral Agent need not give more than 10 days' notice
(which notification shall be deemed given when mailed, postage prepaid, 
addressed to the Pledgor at its address referred to in paragraph 11 hereof) of 
the time and place of any public sale or of the time after which a private sale 
may take place and that such notice is reasonable notification of such matters.

        (b) The Pledgor also agrees to pay all costs of the Collateral Agent, 
including attorneys' fees, incurred with respect to the collection of any of the
Obligations and the enforcement of any of the rights of the Collateral Agent or 
any Secured Party hereunder.

        (c) The Pledgor hereby waives presentment, demand, protest or any notice
(to the extent permitted by applicable law) of any kind in connection with this 
Agreement or any Collateral and expressly waives and agrees not to assert any 
rights or privileges it may acquire under Section 9-112 of the Code.

        (d) The Pledgor consents and agrees that the Collateral Agent may 
exercise any or all of its rights and remedies hereunder notwithstanding any 
provision in the Partnership Agreement which purports to limit the 
transferability of partnership interests without the consent of any partners.

<PAGE>

                                                                              13

 
        10. Limitation on Duties in Respect of Collateral; Limitations on 
Collateral Agent's Obligations. (a) Beyond the use of reasonable care in the 
custody thereof, the Collateral Agent shall not have any duty as to any 
Collateral in its possession or control or in the possession or control of any 
agent or nominee of it or any income thereon or as to the preservation of rights
against prior parties or any other rights pertaining thereto.

        (b) It is expressly agreed by the Pledgor that, anything herein to the 
contrary notwithstanding, the Pledgor shall remain liable under each of its 
contracts or other agreements, including, without limitation, the Partnership 
Agreement, to observe and perform all the conditions and obligations to be 
observed and performed by it thereunder, all in accordance with and pursuant to 
the terms of the provisions thereof. The Collateral Agent and the Secured 
Parties shall not have any obligation or liability by reason of or arising out 
of this Agreement, nor shall the Collateral Agent or any Secured Party be 
required or obligated in any manner to perform or fulfill any of the obligations
of the General Partner or the Pledgor, or to make any payment, or to make any 
inquiry as to the nature or the sufficiency of any payment received by it or the
sufficiency of any performance by the Pledgor, or to present or file any claim, 
or to take any action to collect or enforce any performance or the payment of 
any amounts which may have been assigned to it or to which it may be entitled at
any time or times.

        11. Notices. Notices hereunder may be given by mail, by telex or by 
facsimile transmission, addressed or transmitted to, in the case of the Pledgor,
as set forth with its signature hereto, in the case of the Collateral Agent and 
the LP Lenders, at such Person's address or transmission number set forth in the
Limited Partnership Loan Agreement and in the case of the GP Lender, as set 
forth in the General Partner Loan Agreement, and shall be effective as provided
for in the Loan Agreements. The Pledgor may change its address and transmission
number by written notice to the Collateral Agent and the Secured Parties, and
the Collateral Agent or any Secured Party may change its address and
transmission number by written notice to the Pledgor and, in the case of a
Secured Party, to the Collateral Agent.

        12. Severability. Any provision of this Agreement which is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the 
remaining provisions hereof, and without affecting the validity or 
enforceability of any provision in any other jurisdiction. Where provisions of 
any law or regulation resulting in such prohibition or unenforceability may be 
waived they are hereby waived by the Pledgor and the Collateral Agent and the 
Secured Parties to the full extent permitted by law so that this 
<PAGE>
 
                                                                              14
 
Agreement shall be deemed a valid and binding agreement, and the security 
interest created hereby shall constitute a continuing first lien (other than as 
to the Permitted Liens) on and first (other than as to the Permitted Liens) 
perfected security interest in the Collateral, in each case enforceable in 
accordance with its terms.

          13.  Release of Lien in Favor of the LP Agent and the LP Lenders. 
(a) Upon receipt by the Collateral Agent from the LP Agent of a written notice 
stating that all of the Obligations (as defined in the Limited Partnership Loan 
Agreement) have been paid in full and the Commitments under the Limited 
Partnership Loan Agreement have been terminated, the security interests in favor
of the LP Agent and the LP Lenders created pursuant to Section 2 shall forthwith
terminate.

          (b)  Upon receipt by the Collateral Agent from the GP Lender of a 
written notice stating that all of the Obligations (as defined in the General 
Partner Loan Agreement) have been paid in full and the Commitments thereunder 
have been terminated, the security interests in favor of the GP Lender created 
pursuant to Section 2 shall forthwith terminate.

          (c)  The Collateral Agent, upon request by the Pledgor shall execute 
and deliver, at the Pledgor's expense, all such documentation reasonably 
necessary to release the lien in its favor in and to this Agreement.

          14.  Section Headings.  The section headings used in this Agreement 
are for convenience of reference only and are not to affect the construction 
hereof or be taken into consideration in the interpretation hereof.

          15.  No Waiver; Cumulative Remedies.  The Collateral Agent and Secured
Parties shall not by any act (except pursuant to the execution of a written 
instrument pursuant to Section 16 hereof), delay, indulgence, omission or 
otherwise be deemed to have waived any right or remedy hereunder or to have 
acquiesced in any Default or Event of Default or in any breach of any of the
terms and conditions hereof. No failure to exercise, nor any delay in
exercising, on the part of the Collateral Agent or any Secured Party, any right,
remedy, power or privilege hereunder shall operate as a waiver thereof. No
single or partial exercise of any right, remedy, power or privilege hereunder
shall preclude any other or further exercise thereof or the exercise of any
other right, remedy, power or privilege. A waiver by the Collateral Agent or any
Secured Party of any right or remedy hereunder on any one occasion shall not be
construed as a bar to any right or remedy which the Collateral Agent or any
Secured Party would otherwise have on any future occasion. The rights and
remedies herein provided are cumulative, may be exercised singly or concurrently
and are not exclusive of any rights or remedies provided by law.


<PAGE>
 
        16. Waivers and Amendments; Successors and Assigns; Governing Law. None 
of the terms or provisions of this Agreement may be waived, amended, 
supplemented or otherwise modified except by a written instrument executed by 
the Pledgor and the Collateral Agent. This Agreement shall be binding upon the 
successors and assigns of the Pledgor and shall inure to the benefit of the 
Collateral Agent and the Secured Parties and their respective successors and 
assigns. This Agreement shall be governed by, and construed and interpreted in 
accordance with, the laws of the State of New York.

        17. Powers Coupled with an Interest. All authorizations and agencies 
herein contained with respect to the Collateral are irrevocable and powers 
coupled with an interest.

        18. Indemnification. The Pledgor agrees to pay, indemnify and hold the 
Collateral Agent, each Secured Party and their respective affiliates, directors 
and/or officers harmless from and against any and all liabilities, obligations, 
losses, damages, penalties, actions, judgments, suits, costs, expenses or 
disbursements or any kind whatsoever which may at any time (including, without 
limitation, at any time following the payment of the Obligations) be imposed on,
incurred by or asserted against any such Person in any way relating to or 
arising out of this Agreement or the Collateral, or any documents contemplated 
by or referred to herein or the transactions contemplated hereby or thereby (all
of the foregoing, collectively, the "indemnified liabilities"), provided, that 
the Pledgor shall have no obligation hereunder to any such Person with respect 
to indemnified liabilities arising from (i) the gross negligence or willful 
misconduct of any such Person, (ii) legal proceedings commenced against any 
such Person by any security holder or creditor of any such Person arising out of
and based upon rights afforded any such security holder or creditor solely in 
its capacity as such, or (iii) legal proceedings commenced against any such 
Person by any Permitted Assignee or Transferee. The agreements in this 
subsection shall survive repayment of the Obligations and all other amounts 
payable hereunder.

        19. Collateral Agent Not a Partner. Nothing contained in this Agreement 
shall be construed or interpreted (a) to transfer to the Collateral Agent or any
Secured Party any of the rights and obligations of a partner of the General 
Partner other than the rights of collateral security in and to the Collateral 
described herein or (b) to constitute the Collateral Agent or any Secured Party 
a partner of the General Partner.

        20. Limitation of Liability. The Collateral Agent and the Secured 
Parties agree that the liability of the Pledgor under this Agreement and the 
Obligations shall be limited to the Collateral (as defined in the Loan 
Agreements) and the rights and remedies of the Collateral Agent and the 
Secured Parties against
<PAGE>
 
                                                                              16


the Collateral (as defined in the Loan Agreements) pursuant to this Agreement 
and the other Collateral Security Documents, and in no event shall the Pledgor 
or any Partner or any officer, director, partner or Affiliate thereof be 
personally liable or obligated for any such obligations. Nothing herein shall 
limit the full recourse of the Collateral Agent and the Secured Parties, to the 
Collateral (as defined in the Loan Agreements) pursuant to this Agreement or the
other Collateral Security Documents or be deemed to constitute a waiver of 
liability, if any, of any Person for damages for fraud or for any knowing 
misrepresentation made by such Person herein or in any certificate or document 
delivered pursuant hereto.

        21. Counterparts. This Agreement may be executed by one or more of the 
parties to this Agreement on any number of separate counterparts, and all of 
said counterparts taken together shall be deemed to constitute one and the same 
instrument.

        IN WITNESS WHEREOF, the Pledgor has caused this Agreement to be duly 
executed and delivered as of the date first set forth above.

                                        COGEN TECHNOLOGIES CAMDEN, INC.

                                        By:  /s/ [Signature Appears Here]
                                           --------------------------------
                                           Title: Vice President

                                        1600 Smith Street
                                        Suite 5000
                                        Houston, Texas 77002
                                        Attention: Robert C. McNair
<PAGE>
 
                                                                      SCHEDULE I

                          FINANCING STATEMENT FILINGS

<TABLE> 
<CAPTION> 
                              Jurisdiction                    Document
Debtor                        Where Filed                       Filed
- ------                        ------------                    --------
<S>                           <C>                             <C> 
General Partner        Secretary of State of Delaware       UCC-1 Financing
                                                             Statement

General Partner        Secretary of State of New Jersey     UCC-1 Financing
                                                             Statement

General Partner        County Clerk, Camden County,         UCC-1 Financing
                         New Jersey                          Statement

General Partner        Secretary of State of New York       UCC-1 Financing
                                                             Statement

General Partner        City Registrar, New York County      UCC-1 Financing
                                                             Statement 

General Partner        County Clerk, Schenectady County,    UCC-1 Financing
                         New York                            Statement

General Partner        Secretary of State of                UCC-1 Financing
                         South Carolina                      Statement

General Partner        County Clerk, Greenville County,     UCC-1 Financing
                         South Carolina                      Statement

General Partner        Secretary of State of Texas          UCC-1 Financing
                                                             Statement
</TABLE> 

<PAGE>
 
                                                                       EXHIBIT A

                   [Form of Instruction to Register Pledge]

                                                       ________________ __, 19__

TO: Cogen Technologies Camden GP Limited Partnership

        You are hereby instructed to register the pledge of the following 
uncertificated security as follows:

        The entire partnership interest of the undersigned in Cogen Technologies
Camden GP Limited Partnership (the "General Partner"), including without 
limitation all of the following property now owned or at any time hereafter 
acquired by the Pledgor or in which the Pledgor now has or at any time in the 
future may acquire any rights, title or interest:

           (i) all right, title and interest of the Pledgor in the General 
Partner;

           (ii) any and all moneys due and to become due to the Pledgor now or 
in the future by way of a distribution made to the Pledgor in its capacity as a 
partner of the General Partner;

           (iii) any and all moneys due or to become due to the Pledgor now or 
in the future by virtue of the Pledgor's interest as a partner in the General 
Partner;

           (iv) any other property of the General Partner to which the Pledgor 
now or in the future may be entitled in its capacity as a partner of the General
Partner by way of distribution, return of capital or otherwise;

<PAGE>
 
                                                                               2

        (v)  any other claim which the Pledgor now has or may in the future 
acquire in its capacity as a partner of the General Partner against the General 
Partner and its property; and

        (vi) to the extent not otherwise included, all Proceeds of any or all of
 the foregoing.

        
    Pledgor                                       Pledgee
    -------                                       -------

Cogen Technologies                        General Electric Capital
Camden, Inc.                              Corporation, as Collateral Agent
1600 Smith Street                         1600 Summer Street
Suite 5000                                Sixth Floor
Houston, Texas  77002                     Stanford, CT  06927


                                Very truly yours,

                                Cogen Technologies
                                Camden, Inc.

                                By:
                                   -------------------------
                                   Title:
<PAGE>
 
                                                                       EXHIBIT B

                    [Form of Initial Transaction Statement]


                                              _________ __, 199__


To:  General Electric Capital
     Corporation, as Collateral Agent
     1600 Summer Street
     Sixth Floor
     Stamford, CT  06927
     Attn: Project Financing Investments -
           Transportation and Industrial
           Financing Division

        This statement is to advise you that a pledge of the following 
uncertificated security has been registered in the name of General Electric 
Capital Corporation, as Collateral Agent, as follows:

        1.      Uncertificated Security:

        The entire partnership interest of Cogen Technologies Camden, Inc. in
        the undersigned partnership (the "General Partner"), including without
        limitation all of the following property now owned or at any time
        hereafter acquired by the Pledgor or in which the Pledgor now has or at
        any time in the future may acquire any rights, title or interest:

                (i) all right, title and interest of the Pledgor in the General
        Partner;

                (ii) any and all moneys due and to become due to the Pledgor now
        or in the future by way of a distribution made to the Pledgor in its
        capacity as a partner of the General Partner;

                (iii) any and all moneys due or to become due to the Pledgor now
        or in the future by virtue of the


<PAGE>
                                                                               
                                                                               2

        Pledgor's interest as a partner in the General Partner;

                (iv) any other property of the General Partner to which the
        Pledgor now or in the future may be entitled in its capacity as a
        partner of the General Partner by way of distribution, return of capital
        or otherwise;

                (v) any other claim which the Pledgor now has or may in the
        future acquire in its capacity as a partner of the General Partner
        against the General Partner and its property; and

                (vi) to the extent not otherwise included, all Proceeds of any 
        or all of the foregoing.

        2.      Registered Owner:

                Cogen Technologies Camden, Inc.
                1600 Smith Street
                Suite 5000
                Houston, Texas  77002

        Taxpayer Identification Number:  76-0322566

        3.      Registered Pledgee:

        General Electric Capital Corporation, as Collateral Agent

        Taxpayer Identification Number:  13-1500700

        4.      There are no liens (except for Permitted Liens) or restrictions
                of the undersigned partnership and no adverse claims to which
                such uncertificated security is or may be subject known to the
                undersigned partnership.

        5.      The pledge was registered on __________ __, 1992.

<PAGE>
 
                                                                               3


        THIS STATEMENT IS MERELY A RECORD OF THE RIGHTS OF THE ADDRESSEE AS OF 
THE TIME OF ITS ISSUANCE. DELIVERY OF THIS STATEMENT, OF ITSELF, CONFERS NO 
RIGHTS ON THE RECIPIENT. THIS STATEMENT IS NEITHER A NEGOTIABLE INSTRUMENT NOR A
SECURITY.       

                                        Very truly yours,

                                        Cogen Technologies Camden GP Limited
                                          Partnership


                                        By:  Cogen Technologies Camden, Inc.
                                                its general partner

                                             By:
                                                -----------------------------
                                                Title:
   

<PAGE>
 
                                                                   EXHIBIT 10.81

                         MANAGEMENT SERVICES AGREEMENT

        THIS AGREEMENT ("Agreement"), dated effective as of September 1, 1989, 
by and between Cogen Technologies NJ, Inc., a Texas corporation ("Cogen NJ"), 
Cogen Technologies Management Company, a Texas corporation ("Manager") and 
Robert C. McNair, a resident of Harris County, Texas ("McNair").

                             W I T N E S S E T H:

        WHEREAS, Cogen NJ serves as Managing Venturer of Cogen Technologies NJ 
Venture, a New Jersey joint venture (the "Venture");

        WHEREAS, Cogen NJ has the right to assign certain management rights and 
obligations with respect to the Venture, including the right to receive its 
management fee, to Robert C. McNair and his assigns;

        WHEREAS, Manager is a corporation organized by McNair to perform 
management services to cogeneration facilities in which McNair has a direct or 
indirect ownership interest;

        WHEREAS, during the period that the Venture was constructing its 
cogeneration facility in Bayonne, New Jersey, McNair performed certain 
management services with respect to the Venture; and

        WHEREAS, the parties have agreed that Manager shall perform certain 
management services for the Venture, which services otherwise would be required 
of Cogen NJ.

        NOW, THEREFORE, in consideration of the foregoing and the mutual 
promises and agreements contained herein, McNair hereby delegates to Manager the
obligation to perform such services in accordance with the terms hereof, and 
assigns to Manager any right that he may have to receive such payments; and 
Cogen NJ and Manager hereby agree as follows:

        1. Term.

           The term of this Agreement shall commence effective September 1, 1989
and end at the time Cogen NJ ceases to be Managing Venturer of the Venture (the 
"Basic Term"), subject to prior termination by the Manager or Cogen NJ in 
accordance with the terms of this Agreement.

        2. Nature of Duties.

           (a) During the term of this Agreement the Manager shall assist Cogen 
NJ in serving as Managing Venturer of


<PAGE>
 
the Venture and shall possess all powers and privileges as necessary to perform 
or to supervise the performance of such duties as are conferred upon Cogen NJ 
and McNair and his assigns pursuant to the Joint Venture Agreement of the 
Venturer (the "Manager's Responsibilities"). In this regard the Manager agrees 
to perform those management responsibilities currently being performed by Cogen 
NJ and/or McNair relative to the Venture, and to perform such other management 
services for the Venture as Cogen NJ may assign to it; provided, however, that 
Cogen NJ shall not, without the Manager's prior consent, directly or indirectly 
limit, impair or remove any power or privilege or increase or enlarge the scope 
of any duty within the purview of the Manager's Responsibilities as described in
this Agreement.

           (b) The Manager shall not be a partner or venturer in the Venture, 
and shall not have liability for obligations of the Venture.

        3. Compensation.

           (a) Basic Compensation. In consideration of all services to be 
rendered by the Manager, Cogen NJ shall pay, or cause the Venture to pay, to the
Manager on or before the 15th day of each month an amount equal to 1-1/2% of the
gross revenues of the Venture for the preceding month.

           (b) Expenses. During the term of this Agreement Cogen NJ shall pay
for or reimburse Manager for all reasonable out-of-pocket expenses incurred by
it in furtherance of the management activities which, but for the management of
the Venture, would not have been incurred by Manager.

        4. Termination.

           (a) Cogen NJ shall have the right to terminate this Agreement with 
Cause (as defined below) at any time upon two weeks' prior written notice as 
provided in this Section 4. In the event that Cogen NJ believes that there shall
exist Cause to terminate this Agreement and Cogen NJ desires to terminate this 
Agreement, it shall deliver written notice to the Manager stating its intention 
to terminate and describing, in detail, the grounds upon which it believes that 
Cause exists to terminate the Agreement (the "Terminating Event"). The Manager 
shall have two weeks to cure or deliver a written notice to Cogen NJ to 
challenge its belief that a Terminating Event has occurred under this Agreement.
If the Manager disputes whether such a Terminating Event exists, then the 
question of whether a

                                       2
<PAGE>
 
Terminating Event has occurred shall be submitted to arbitration in accordance 
with the provisions of Section 4(b) below. If the Manager fails to cure the 
Terminating Event within the two-week period and either (i) fails to challenge 
Cogen NJ's belief that a Terminating Event has occurred or (ii) challenges such 
belief and a Terminating Event is nonetheless determined to have occurred either
by the Manager's ceasing its dispute or by the arbitrators as described in 
Section 4(b) below, then (unless the Terminating Event is cured within the 
two-week period immediately following the rendering of the decision by the 
arbitrations) Cogen NJ may deliver a Final Notice of Termination to the Manager 
stating that this Agreement has been terminated for Cause, which Cause shall be 
described in detail in such Final Notice of Termination. Immediately upon 
receipt or delivery by the Manager of such Final Notice of Termination, Manager 
shall have no authority whatsoever to incur any obligation or to make any 
agreement, representation, or warranty on behalf of or for the account of Cogen 
NJ, or to undertake any activity on behalf of Cogen NJ without the prior written
consent of Cogen NJ. "Cause" shall mean Manager's (i) willful and intentional 
failure and refusal to perform its duties in accordance with this Agreement, or 
(ii) commission of any act involving willful or intentional misconduct which, in
either cause, results in material injury to Cogen NJ.

           (b) Any dispute over whether a Terminating Event has occurred which 
is submitted to arbitration in accordance with the provisions of Section 4(a) 
above, shall be finally settled under the Rule of the American Arbitration 
Association by one or more arbitrators appointed in accordance with the said 
Rules, as modified hereby. In the absence of an agreement by the parties within 
two business days of the date on which this arbitration provision is invoked 
that it is appropriate to submit the dispute to a single arbitrator whose 
identity is agreed to by the parties, the arbitral tribunal shall be composed of
three arbitrators. The Manager and Cogen NJ shall each appoint one arbitrator. 
If a party fails to appoint an arbitrator within five business days from the 
date on which this arbitration provision is invoked, the party timely naming the
first arbitrator shall appoint a second. The two arbitrators thus appointed then
shall, within twenty (20) days of the appointment of the latest appointed 
arbitrator, agree upon the third arbitrator to act as Chairman. In all cases, 
the Chairman shall be a lawyer admitted to the State Bar of Texas. With respect 
to matters not dealt within in this Section 4(b), the arbitral tribunal shall be
constituted in accordance with the then existing Rules of

                                       3
<PAGE>
 
the American Arbitration Association. The place of arbitration shall be Houston,
Texas, and the arbitral proceedings shall begin within thirty business days of 
the appointment of the chairman. The sole issue to be decided by such 
arbitrators in the arbitral proceeding shall be whether a Terminating Event has 
occurred. If necessary, judgment on the award of the arbitrators may be entered 
in any court having jurisdiction thereof or having jurisdiction over one or more
of the parties or their assets. All costs and expenses incurred in connection
with the arbitral proceeding shall be borne by the party or parties, and shared
in such proportions, as may be determined by such arbitrators.

           (c) Section 4(b) of this Agreement shall not apply to the rights of 
Cogen NJ or Manager to seek in the courts of the United States any relief on any
provision of this Agreement except on the issue of whether a Terminating Event 
has occurred under this Agreement.

           (d) If the Agreement is terminated without Cause or terminated by the
Manager for Good Reason, Cogen NJ shall continue to pay to the Manager the 
Compensation payable to the Manager pursuant to Section 3(a) hereof for the 
remainder of the Term.

        For the purposes hereof "Good Reason" shall mean:

                (i) without the Manager's express written consent, the
        assignment to Manager of any duties inconsistent with the Manager's
        duties, responsibilities and status with Cogen NJ hereunder, or a change
        in the Manager's responsibilities, or any removal of Manager from any
        such responsibilities, except in connection with the termination of the
        Manager's employment for Cause; and

                (ii) a reduction by Cogen NJ in the Manager's compensation as 
        set forth in Section 3 hereof.

           (e) This Agreement may also be terminated by Manager for any reason 
other than Good Cause upon 30 days written notice to Cogen NJ. In such case 
Manager shall not be entitled to receive any further compensation hereunder.

        5. Notices.

        Any notice to be given hereunder to any party shall be deemed to be 
given if delivered in person or if mailed by certified mail, postage prepaid, 
return receipt requested, to the following persons:

                                       4
<PAGE>
 
IF TO MANAGER:          Cogen Technologies Management Comany
                        Suite 5000
                        1600 Smith Street Building
                        1600 Smith Street
                        Houston, Texas 77002
                        Attention: President

IF TO COGEN NJ:         Cogen Technologies NJ, Inc.
                        Suite 5000
                        1600 Smith Street Building
                        1600 Smith Street
                        Houston, Texas  77002
                        Attention:  Vice President

        Any party may by notice to the other parties change the address by which
notices to it are to be addressed.

        6. Amendments.

        This Agreement shall not be amended except by an agreement in writing 
signed by the parties hereto.

        7. Waiver.

        A waiver by either party of any of the terms and conditions of this 
Agreement in any instance shall not be deemed or construed to be a waiver of 
such term or condition for the futre, or of any subsequent breach thereof.

        8. Entire Agreement.

        This Agreement constitutes the entire agreement between the parties with
respect to the subject hereof. The parties agree that they are not relying on 
any other representations, expressed or implied, oral or written.

        9. Captions.

        The captions contained in this Agreement are for convenient reference 
only and do not affect the meaning of any term or provision.

        10. Governing Law.

        The validity, construction and performance of this Agreement shall be 
governed by, and construed in accordance with, the laws of the State of Texas. 
Any action filed as a result of a dispute relating to the construction, 
application or enforcement of this Agreement (except for any arbitration

                                       5
        
<PAGE>
 
proceeding pursuant to Section 4(b) of this Agreement) shall be filed only in a 
state, county or federal district court in Harris County, Texas.

        11. Binding Effect.

        This Agreement shall be binding upon the parties hereto and upon their 
successors, executors and assigns.

        IN WITNESS WHEREOF, the parties have caused this Agreement to be 
executed effective as of the day and year first above written.


                                        COGEN TECHNOLOGIES NJ, INC.

                                        By:  /s/ Robert McNair
                                            -----------------------------
                                            Its:  President
                                                 ------------------------

                                        COGEN TECHNOLOGIES MANAGEMENT COMPANY

                                        By:  /s/ Robert McNair
                                            -----------------------------
                                            Its:  President
                                                 ------------------------

                                         /s/ Robert C. McNair
                                        ---------------------------------
                                        Robert C. McNair


                                       6

<PAGE>
 
                                                                   EXHIBIT 10.82

                           ASSIGNMENT AND ASSUMPTION

        For the consideration hereinafter set forth, COGEN TECHNOLOGIES 
MANAGEMENT COMPANY, a Texas corporation (hereinafter called the "Assignor"), 
does hereby ASSIGN and TRANSFER to COGEN TECHNOLOGIES MANAGEMENT SERVICES, L.P.,
a limited partnership organized under the laws of the State of Delaware 
(hereinafter called the "Assignee"), all the Assignor's right, title, interest, 
privilege and benefit, of whatever kind of character, which may be evidenced by,
or which may have heretofore arisen, or which may hereafter arise, under or by 
virtue of that certain Management Services Agreement dated September 1, 1989 
(herein called the "Agreement"), executed by and among Assignor, Cogen 
Technologies NJ, Inc. and Robert C. McNair.

        The consideration for this Assignment and Assumption has been paid and 
assumed and agreed to be paid by the Assignee as follows:

           (1) The sum of Ten and No/100 Dollars ($10.00) and other good and 
valuable consideration has this day been paid in cash to the Assignor by the 
Assignee, the receipt and sufficiency of which are hereby confessed and 
acknowledged; and

           (2) The remaining portion of the consideration herefor is represented
by the covenant and agreement by the Assignee to keep and perform all the 
obligations of the Assignor set forth in the Agreement arising from and after 
the effective date of this Assignment.
<PAGE>
 
        EXECUTED and to be effective as of the 1st day of January, 1994.


                                        COGEN TECHNOLOGIES MANAGEMENT COMPANY

                                        By: /s/ Robert C. McNair
                                           ------------------------------
                                           Robert C. McNair, President

                                                                      "ASSIGNOR"

                                        COGEN TECHNOLOGIES MANAGEMENT 
                                         SERVICES, L.P.

                                        By: Cogen Technologies Management
                                              Company, Its General Partner

                                        By: /s/ Robert C. McNair
                                           ------------------------------
                                           Robert C. McNair, President

                                                                      "ASSIGNEE"

        Cogen Technologies NJ, Inc. and Robert C. McNair, being parties to the 
Agreement, join in the execution hereof to evidence their consent to the 
foregoing Assignment.


                                        COGEN TECHNOLOGIES NJ, INC.


                                        By: /s/ Robert C. McNair
                                           ------------------------------
                                           Robert C. McNair, President

                                         /s/ Robert C. McNair
                                        ---------------------------------
                                        Robert C. McNair


                                       2


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