DUQUESNE LIGHT CO
424B5, 1998-04-27
ELECTRIC SERVICES
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                                             Filed Pursuant to Rule 424(b)(5)
                                             Registration No. 33-63602



               PROSPECTUS SUPPLEMENT TO PROSPECTUS DATED JUNE 15, 1993

                                     $100,000,000

                        [LOGO]          DUQUESNE LIGHT COMPANY

                       7 3/8% Quarterly Interest Bonds Due 2038

     Interest payable February 1, May 1, August 1
       and November 1                                       Due April 15, 2038

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

     The 7 3/8% Quarterly Interest Bonds Due 2038 (the "Offered Bonds"),
     are part of the series of debt securities of Duquesne Light Company
      designated "First Collateral Trust Bonds, Series E" and described
       in the accompanying Prospectus.  The Offered Bonds will mature
          on April 15, 2038.  The Offered Bonds will bear interest
           from the date of original issuance, and interest on the
            Offered Bonds will be payable quarterly in arrears on
             February 1, May 1, August 1 and November 1 of each
              year commencing August 1, 1998.  The Offered Bonds
               will not be redeemable prior to May 1, 2003.  On
                and after that date, the Offered Bonds may be
                 redeemed in whole at any time, or in part
                  from time to time, at the option of the
                   Company at a redemption price equal to
                    100% of the principal amount thereof,
                        plus accrued interest to the
                        redemption date. The Offered
                         Bonds will be issued in
                          denominations of $25
                           and any integral
                           multiple thereof.


    The Offered Bonds will be represented by one or more Global Bonds registered
      in the name of a nominee of The Depository Trust Company, as Depositary.
      Beneficial interests in Global Bonds representing Book-Entry Bonds will
         be shown on, and transfer thereof will be effected only through,
         records maintained by the Depositary and its participants.  The
          Offered Bonds will not be represented by certificates issued in
              definitive form, except under the limited circumstances
               described herein.  See "Supplemental Description of
                the Offered Bonds--Book-Entry Bonds."  The Offered
                 Bonds have been approved for listing on the New 
                     York Stock Exchange, subject to official
                        notice of issuance.  Trading of the
                        Offered Bonds on the New York Stock
                          Exchange is expected to commence
                          within a 30-day period after the
                           initial delivery of the Offered
                               Bonds. See "Underwriting"
                                        herein.


    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
             COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
                 PROSPECTUS SUPPLEMENT OR THE PROSPECTUS.  ANY
                      REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.


                                            Underwriting
                               Price to     Discounts and      Proceeds to
                              Public(1)    Commissions(2)    Company(1)(2)(3)
                              ---------    --------------    ----------------
      Per Offered Bond  . .      100%           3.15%             96.85%
      Total . . . . . . . .  $100,000,000    $3,150,000        $96,850,000

       (1)     Plus accrued interest, if any, from date of issuance.
       (2)     The underwriting discount will  be 2% of the principal  amount of
               Offered Bonds  sold to certain  institutions.  Therefore,  to the
               extent any such sales  are made to such institutions,  the actual
               total underwriting  discount will be  less than,  and the  actual
               total proceeds to the  Company will be greater than,  the amounts
               shown in the table above.
       (3)     Before deduction of expenses payable  by the Company estimated at
               $325,000.

          The Offered Bonds are offered by the several Underwriters when, as and
     if issued by the Company, delivered to and accepted by the Underwriters and
     subject  to their  right to  reject orders  in  whole or  in part.   It  is
     expected that delivery of the Offered Bonds will be made in book-entry form
     through  the facilities of  The Depository Trust Company  on or about April
     29, 1998, against payment in immediately available funds.

         CREDIT SUISSE FIRST BOSTON                     SALOMON SMITH BARNEY    

     GOLDMAN, SACHS & CO.                                    MERRILL LYNCH & CO.

                     Prospectus Supplement dated April 24, 1998.


     <PAGE>


          CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN
          TRANSACTIONS THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE
          PRICE OF THE SECURITIES OFFERED HEREBY, INCLUDING OVER-ALLOTMENT,
          STABILIZING TRANSACTIONS, SYNDICATE SHORT COVERING TRANSACTIONS
          AND PENALTY BIDS.  FOR A DESCRIPTION OF THESE ACTIVITIES, SEE
          "UNDERWRITING."




                                      S-2
     <PAGE>


                                 SUMMARY OF OFFERING

               The following summary is qualified in its entirety by
          reference to the detailed information appearing elsewhere in this
          Prospectus Supplement and in the accompanying Prospectus. 
          Capitalized terms not otherwise defined shall have the meanings
          assigned in the accompanying Prospectus.

          The Company . . . . . . . .        The Company was formed under
                                             the laws of Pennsylvania by
                                             the consolidation and merger
                                             in 1912 of three constituent
                                             companies.  As part of a
                                             corporate reorganization, the
                                             Company became a wholly-owned
                                             subsidiary of DQE, an energy
                                             services holding company
                                             formed in 1989.  The Company
                                             is engaged in the generation,
                                             transmission, distribution and
                                             sale of electric energy,
                                             providing electric service to
                                             customers in Allegheny County,
                                             including the City of
                                             Pittsburgh, Beaver County and
                                             Westmoreland County.  This
                                             territory represents
                                             approximately 800 square miles
                                             in southwestern Pennsylvania,
                                             located within a 500-mile
                                             radius of one-half of the
                                             population of the United
                                             States and Canada.  The
                                             population of the area served
                                             by the Company's electric
                                             utility operations, based on
                                             1990 census data, is
                                             approximately 1,510,000, of
                                             whom 370,000 reside in the
                                             City of Pittsburgh.  In
                                             addition to serving
                                             approximately 580,000 direct
                                             customers, the Company's
                                             utility operations also sell
                                             electricity to other
                                             utilities.

          Offered Bonds . . . . . . .        The Company is offering
                                             $100,000,000 aggregate
                                             principal amount of the
                                             Offered Bonds.  Interest on
                                             the Offered Bonds will be
                                             payable quarterly in arrears
                                             on February 1, May 1, August 1
                                             and November 1 of each year,
                                             commencing August 1, 1998.

          Record Date . . . . . . . .        The regular record date for
                                             each Interest Payment Date
                                             will be the January 15, April
                                             15, July 15 or October 15, as
                                             the case may be, next
                                             preceding such Interest
                                             Payment Date.

          Security  . . . . . . . . .        The Offered Bonds will be
                                             issued as a tranche of
                                             securities under the Company's
                                             Mortgage.  The Mortgage
                                             constitutes a first mortgage
                                             lien on all of the property of
                                             the Company subject thereto,
                                             subject to certain Permitted
                                             Liens.  See "Supplemental
                                             Description of the Offered
                                             Bonds--Security; Discharge of
                                             the 1947 Mortgage" herein, and
                                             "Security" in the accompanying
                                             Prospectus.


                                      S-3
     <PAGE>


          Redemption  . . . . . . . .        The Offered Bonds may be
                                             redeemed at the option of the
                                             Company in whole at any time
                                             or in part from time to time,
                                             on or after May 1, 2003, at a
                                             redemption price of 100% of
                                             the principal amount plus
                                             accrued interest to the
                                             redemption date.  See
                                             "Supplemental Description of
                                             the Offered Bonds - Optional
                                             Redemption" herein.

          Listing . . . . . . . . . .        The New York Stock Exchange

          NYSE Symbol . . . . . . . .        DQZ


                                    CAPITALIZATION

          The following table sets forth the consolidated capitalization of
     the Company as of December 31, 1997, and as adjusted to give effect to
     the issuance of the Offered Bonds and certain other transactions.  The
     table should be read in conjunction with the consolidated financial
     statements of the Company and the notes thereto appearing in the
     Incorporated Documents.

                                                   Capitalization as of
                                                     December 31, 1997
                                                ---------------------------
                                                  Actual    As Adjusted (1)
                                               ------------  --------------

                                                    (Thousands, except
                                                       percentages)


     Common Stockholders' Equity               $1,003,833     $1,003,833

     Preferred Stock                               64,608         64,608

     Monthly Income Preferred Securities          150,000        150,000

     Preference Stock, net of deferred ESOP
       benefit of $16,400                          11,895         11,895

     7 3/8% Quarterly Interest Bonds due 2038          --        100,000

     First Mortgage Bonds                         778,000        718,000

     Pollution Control Notes                      417,985        417,985

     Other Long-Term Debt                          22,291         22,291
                                               ----------     ----------

       Total Capitalization, excluding
         amounts due within one year           $2,448,612     $2,488,612
                                               ==========     ==========




                                               Capitalization as of
                                                December 31, 1997
                                               -------------------
                                                        %
                                                     --------

                                                (Thousands, except
                                                   percentages)


     Common Stockholders' Equity                     40.3%

     Preferred Stock                                  2.6%

     Monthly Income Preferred Securities              6.0%

     Preference Stock, net of deferred ESOP
       benefit of $16,400                             0.5%

     7 3/8% Quarterly Interest Bonds due 2038         4.0%

     First Mortgage Bonds                            28.9%

     Pollution Control Notes                         16.8%
                                                      
     Other Long-Term Debt                             0.9%
                                                    ------

       Total Capitalization, excluding amounts
         due within one year                        100.0%
                                                    ======

     (1)  Reflects the following adjustments: (i) the February 1998 issuance of
          $40 million aggregate principal amount of 6.45% first mortgage bonds,
          due February 2008; (ii) the March 1998 redemption of $100 million
          aggregate principal amount of 8.75% first mortgage bonds due May 2022
          at a redemption price of 106.5625%; and (iii) the issuance of the
          Offered Bonds.


                                      S-4
     <PAGE>


                                 RECENT DEVELOPMENTS

     RECOMMENDED DECISIONS ON THE PROPOSED MERGER AND THE RESTRUCTURING PLANS

          On March 25, 1998, two Pennsylvania Public Utility Commission ("PUC")
     administrative law judges recommended that a decision on the proposed
     merger of the Company's parent, DQE, Inc. and Allegheny Energy, Inc. 
     ("AYE") be deferred for up to 18 months to allow the companies to address
     market power concerns.  If the PUC follows this recommendation, the
     proposed merger, originally anticipated to be consummated in mid-1998, may
     not occur.  In two other decisions issued at the same time, the judges
     recommended approval, with modifications, of the restructuring plans of the
     Company and of AYE's utility subsidiary, West Penn Power.  On April 14,
     1998, the Company filed exceptions to the recommendations regarding the
     Company's restructuring plan.  Also on April 14, DQE and AYE jointly filed
     exceptions to the PUC administrative law judges' recommendation that
     approval of the proposed merger be delayed by up to 18 months until market
     power concerns have been addressed.

          In its restructuring plan filed in August 1997, the Company proposed a
     market-based approach to determining the value of its generating assets,
     with a final market test to be applied in 2003, when electricity markets
     are more fully developed.  The administrative law judge did not support
     this approach, citing the delay until 2003 as inappropriate, and
     recommended instead either an immediate auction of the Company's generating
     assets if the proposed DQE/AYE merger is not consummated, or an
     administrative determination of the value of such assets if the proposed
     DQE/AYE merger is consummated.  In its exceptions, the Company is seeking
     clarification of the administrative law judge's recommendation.  Also in
     its exceptions, the Company reaffirms its fundamental premise that market
     data should be used to set the value of its generating assets.

          In their joint exceptions, DQE and AYE commit to mitigate the
     potential market power of the new company by joining the Midwest
     Independent System Operator (MISO), a regional electricity transmission
     organization, and by relinquishing control of the output of the Company's
     570-megawatt Cheswick Power Station (Cheswick) for a minimum of two years
     or until the  MISO has been approved.  Both actions would occur immediately
     upon completion of the proposed merger.  DQE and AYE further commit to
     issue a request for proposals to sell the output of Cheswick within a month
     of securing all required regulatory approvals for the proposed merger.  The
     Company will continue to own and operate Cheswick.  Both DQE and AYE are
     urging the PUC to adopt the plan for a final valuation of generating assets
     in 2003.

          The PUC is currently scheduled to consider all exceptions to the
     recommended decisions at its April 30, 1998 meeting.  A final vote is
     currently scheduled for May 21, 1998.  Further details about exceptions and
     the recommended decisions are provided in the Company's reports on Form 8-
     K, filed with the SEC on April 8 and April 17, 1998.

     BEAVER VALLEY POWER STATION

          Beaver Valley Unit 1 ("BV Unit 1") went off-line January 30, 1998, due
     to an issue identified in a technical review recently completed by the
     Company.  Beaver Valley Unit 2 ("BV Unit 2") went off-line December 16,
     1997, to repair the emergency air supply system to the control room and has
     remained off-line due to other issues identified by a similar technical
     review of BV Unit 2.  These technical reviews are in response to a 1997
     commitment made by the Company to the Nuclear Regulatory Commission
     ("NRC").  The Company is one of many utilities faced with similar issues,
     some of which date back to the initial start-up of Beaver Valley Power
     Station.  Both units remain off-line for a reaffirmation of compliance with
     the technical specification requirements of various plant systems.  The
     Company is preparing for a meeting with the NRC, currently expected to take
     place in May 1998, to review its action plans and discuss any needed
     remediation.  Both units will remain off-line until the action plans have
     been satisfactorily completed.  Further details are provided in the
     Company's Annual Report on Form 10-K for the year ended December 31, 1997.


                                      S-5
     <PAGE>


                          RATIO OF EARNINGS TO FIXED CHARGES


                               Year Ended December 31,
                   -----------------------------------------------
                    1997       1996      1995      1994      1993
                    ----       ----      ----      ----      ----

                    2.49       2.64      2.71      2.58      2.42

     Duquesne's share of  the fixed  charges of an  unaffiliated coal  supplier,
     which  amounted to approximately $2.7  million for the  twelve months ended
     December  31, 1997, has been excluded from  the ratio.  Earnings related to
     income taxes reflect a  $17.0 million, $12.0 million, $13.5  million, $13.5
     million and $10.4 million decrease for the twelve months ended December 31,
     1997, 1996, 1995, 1994 and 1993, respectively, due to a financial statement
     reclassification related to Statement of Financial Accounting Standards No.
     109, Accounting  for Income Taxes.  The ratio of earnings to fixed charges,
     absent this reclassification equals 2.61, 2.72, 2.81, 2.67 and 2.48 for the
     twelve  months  ended  December  31,  1997,  1996,  1995,  1994  and  1993,
     respectively.

                                   USE OF PROCEEDS

          The Company currently intends to use the net proceeds from the sale of
     Offered  Bonds  for  general  corporate purposes,  including  the  possible
     redemption of higher cost securities of the Company.


                    SUPPLEMENTAL DESCRIPTION OF THE OFFERED BONDS

          The following description of the particular terms of the Offered Bonds
     of  Duquesne Light Company (the  "Company") supplements, and  to the extent
     inconsistent therewith supersedes, the description of the general terms and
     provisions of the  Bonds set forth under "Description of  the Bonds" in the
     accompanying  Prospectus, to  which description  reference is  hereby made.
     Certain capitalized terms used herein are defined under "Description of the
     Bonds" in the accompanying Prospectus.

     GENERAL

          The Offered  Bonds will be issued as a tranche of a series of Mortgage
     Securities  under the  Mortgage limited  in aggregate  principal  amount to
     $300,000,000; such tranche will be limited in aggregate principal amount to
     $100,000,000.

          The  Offered Bonds  will  be issued  in  fully registered  form  only,
     without coupons.   The Offered Bonds will be issued initially as Book-Entry
     Bonds (as hereinafter defined) and, except as set forth herein under "Book-
     Entry  Bonds,"  will not  be exchangeable  for,  or otherwise  issuable as,
     Certificated Bonds (as hereinafter  defined).  The authorized denominations
     of the Offered Bonds will be $25 and any integral multiple thereof.

     DISCHARGE OF 1947 MORTGAGE

          On August 30, 1995 all Class "A" Bonds issued under the Company's 1947
     Mortgage  were  surrendered for  cancellation  and  the 1947  Mortgage  was
     discharged.  As of such date the only bonds that had been outstanding under
     the 1947 Mortgage were Class  "A" Bonds held by the Trustee as the basis of
     authentication  and delivery of Mortgage Securities, and no other Class "A"
     Mortgage existed.   As a result of the discharge of the 1947  Mortgage, the
     lien of the 1947 Mortgage on the Company's property ceased to exist and the


                                      S-6
     <PAGE>


     Mortgage became  a  first mortgage  lien  on all  property  of the  Company
     subject thereto,  subject to  certain  Permitted Liens  as described  under
     "Description of the Bonds--Security" in the accompanying Prospectus.  The
     information set  forth in  the accompanying  Prospectus under  the headings
     "Description of the Bonds--Security" and "Description of the 1947
     Mortgage" is accordingly hereby superseded as a result of the discharge of
     the 1947 Mortgage.    The Offered  Bonds will  be issued  on  the basis of
     Property Additions  as  described  under   "Description of the Bonds--
     Issuance of Additional Mortgage Securities" in the accompanying Prospectus.

     PAYMENT AND MATURITY

          The  Offered  Bonds  will  mature  on  April  15,  2038  (the  "Stated
     Maturity") and will bear  interest at a rate of 7   percent per annum until
     the principal  amount thereof is paid  or made available for  payment.  The
     Offered  Bonds will  bear  interest from  the  date of  original  issuance.
     Interest on each Offered Bond will be payable quarterly in  arrears on each
     February 1, May 1, August 1 and November 1 of each year (each such  date an
     "Interest Payment Date"), commencing August 1, 1998, and at Maturity.  Each
     payment of interest  in respect of  an Interest  Payment Date will  include
     interest accrued to but excluding such Interest Payment Date.   Interest on
     the Offered Bonds will be computed on the basis of a 360-day year of twelve
     30-day months.

          Payments of interest on the Offered Bonds (other than interest payable
     at  Maturity) will be made  by check mailed to the  Holders of such Offered
     Bonds  as  of the  Regular  Record Date  for  each  Interest Payment  Date;
     provided,  however, that (a) in the case of Global Bonds representing Book-
     Entry Bonds (the  holder of which will  be a nominee of the  Depositary, as
     hereinafter  defined),  such  payment  will  be  made  in  accordance  with
     arrangements then in  effect among the  Company, the  Paying Agent and  the
     Depositary  (see "Book-Entry  Bonds");  and (b)  if and  to the  extent the
     Company defaults in the payment of the interest due on  any Offered Bond on
     any  Interest Payment  Date,  such  defaulted  interest  will  be  paid  as
     described  under "Description of the Bonds--Payment of Bonds;  Transfers;
     Exchanges"  in the accompanying Prospectus.  The "Regular Record Date" with
     respect to any Interest Payment Date will be the January 15, April 15, July
     15 or October 15 (whether or not a "Business Day" as defined below), as the
     case may be, immediately preceding such Interest Payment Date.

          Except  as   described  below  under  "Book-Entry   Bonds"  and  under
     "Description of the Bonds--Payment of Bonds; Transfers; Exchanges" in the
     accompanying Prospectus, principal of the Offered Bonds and any premium and
     interest thereon payable at Maturity will be paid upon surrender thereof at
     the office of The First National Bank of Chicago in New York, New York.

          If,  with  respect to  any Offered  Bond,  any Interest  Payment Date,
     redemption date  or  Stated Maturity  is  not a  Business Day,  payment  of
     amounts  due on  such Offered Bond  on such  date may  be made on  the next
     succeeding  Business Day and, if such payment  is made or duly provided for
     on such  Business Day,  no interest  shall accrue on  such amounts  for the
     period from and after such Interest Payment Date, redemption date or Stated
     Maturity, as the case may be, to such Business Day.

          "Business Day" with  respect to any Offered Bond  means any day, other
     than a Saturday or Sunday, which is not a day on which banking institutions
     or trust companies  in The City of New York, New  York or the city in which
     is located  any office or agency maintained for the payment of principal of
     or  premium, if  any, or interest  on such  Offered Bond  are authorized or
     required by law, regulation or executive order to remain closed.


                                      S-7
     <PAGE>


     CERTAIN TRADING CHARACTERISTICS

          The  Company has been advised by The  New York Stock Exchange that the
     Offered Bonds are expected to trade at a price  that takes into account the
     value, if any, of  accrued but unpaid interest (except for interest accrued
     after a  Regular Record Date and  prior to an Interest  Payment Date, which
     interest will be payable to the Holders as of such Regular  Record Date, as
     described  above);  thus, purchasers  will not  pay,  and sellers  will not
     receive, accrued and unpaid interest with respect to the Offered Bonds that
     is not included  in the trading price thereof.  Any  portion of the trading
     price  of an  Offered Bond  received by  a seller  that is  attributable to
     accrued  interest will be treated  as ordinary interest  income for federal
     income tax  purposes and will not be treated as part of the amount realized
     for purposes  of determining gain or loss on the disposition of the Offered
     Bond.

     OPTIONAL REDEMPTION

          The Company will  have the right to redeem Offered  Bonds, in whole at
     any time or  in part from time to  time, on or after May 1,  2003, upon not
     less  than 30 nor more than 60 days' notice, at a redemption price equal to
     100% of the principal amount to be so  redeemed plus any accrued and unpaid
     interest to the redemption date.

          Additional  information  concerning   redemption  is  contained  under
     "Description of the Bonds--Redemption" in the accompanying Prospectus.

     MODIFICATION OF MORTGAGE

          Reference is made  to "Modification of  Mortgage" in the  accompanying
     Prospectus.

          The  Holders of the Offered Bonds will  be deemed to have consented to
     the  execution and delivery of  a supplemental indenture  containing one or
     more, or all, of the amendments to the Mortgage described below:

               (a)  to change the definition of  the term "Stated Interest Rate"
          to  provide,  among  other  things,  that  any  calculation  or  other
          determination to be made under the Mortgage by reference to the Stated
          Interest Rate on an  obligation which secures other indebtedness  will
          be made by reference to the lower of the Stated Interest Rate  on such
          obligation and the Stated Interest Rate on such other indebtedness;

               (b)  to  change the definition of the term "Cost" to, among other
          things, clarify that such term includes, in  addition to the amount of
          cash  paid,  the  fair market  value  of  property  delivered and  the
          principal amount of indebtedness assumed, and any other amounts which,
          in accordance  with  generally  accepted  accounting  principles,  are
          properly chargeable to plant or other property accounts; and/or

               (c)  to add a  definition of  the term  "fair value",  providing,
          among other things,  that "fair  value" with respect  to any  property
          will be  determined by  reference to  (a)  the amount  which would  be
          likely to be obtained in an  arm's length transaction with respect  to
          such  property between an informed  and willing buyer  and an informed
          and willing seller, under no compulsion, respectively, to buy or sell,
          (b)  the amount  of investment  with respect  to such  property which,
          together  with  a reasonable  return thereon,  would  be likely  to be
          recovered through  ordinary business operations or  otherwise, (c) the
          cost, accumulated  depreciation and  replacement cost with  respect to
          such property and (d) any other relevant factors.


                                      S-8
     <PAGE>


          As more fully  described under "Description  of the Bonds--Release  of
     Property" in  the accompanying Prospectus, obligations  secured by purchase
     money mortgage on any property to be released from the lien of the Mortgage
     may be deposited with the Trustee or  the trustee or other holder of a lien
     prior to the lien of the Mortgage, and the release of  such property may be
     made on the basis of the principal amount of such obligations so deposited.
     The use of obligations secured by purchase money mortgage on property to be
     released as  the basis of such  release, as described above,  is subject to
     the following  limitations: (x)  no obligations secured  by purchase  money
     mortgage  may be so  used unless all  obligations secured  by such purchase
     money mortgage  shall be delivered to  the Trustee or the  trustee or other
     holder  of a  prior lien; (y)  the aggregate  credit which  may be  used as
     described above in  respect of any property  being released may  not exceed
     75% of the fair value  of such property; and (z) no such obligations may be
     so  used as  a credit  in connection with  the release  of property  if the
     aggregate credit  in respect of  such obligations to  be used  as described
     above plus the aggregate credits used by the Company in connection with all
     previous  releases of property on  the basis of  purchase money obligations
     theretofore delivered to  and then held  by the Trustee  or the trustee  or
     other holder  of a  prior lien  shall, immediately  after the  release then
     being applied for, exceed 15% of the aggregate principal amount of Mortgage
     Securities then Outstanding.

          The Holders of the Offered  Bonds will be deemed to have  consented to
     the  execution  and delivery  of  a supplemental  indenture  containing, in
     addition to the amendments to the  Mortgage described above, one or both of
     the amendments described below:

               (x)  to   modify  the  provisions   described  in  the  preceding
          paragraph  to (i) delete the provisions described  in clause (x) or to
          provide  that  such  provisions  may  be  disregarded  upon  specified
          conditions;  and/or  (ii)(A) to  delete  the  provisions described  in
          clause (z)  or to  provide  that clause  (z) may  be disregarded  upon
          specified conditions; or (B)  to delete from the  provisions described
          in clause (z)  the limitation of 15%; or (C)  to change the percentage
          in clause (z) to any higher percentage not exceeding 100%; and/or

               (y)  to add a definition of the term "purchase money mortgage" to
          mean, generally, a lien on the property being acquired or disposed  of
          by  the Company or being released from  the lien of the Mortgage which
          is retained  by the transferor of  such property or granted  to one or
          more  persons in connection with  the transfer or  release thereof, or
          granted to  or held by  a trustee or  agent for any such  persons, and
          which  would include, among other  things, liens which  (i) permit the
          incurrence of indebtedness secured thereby in addition to indebtedness
          incurred in connection  with the transfer  of specific property,  (ii)
          permit the subjection  of other  property to the  lien thereof  and/or
          (iii) were granted prior to any particular transfer of property, which
          cover  other property  and/or  which secure  other obligations  issued
          prior or  subsequent to the  obligations delivered in  connection with
          any particular acquisition, disposition or release of property.

          The  Officer's  Certificate which  establishes  certain  terms of  the
     Offered  Bonds provides  that the  possible  modifications to  the Mortgage
     described  above will be substantially of the  tenor or effect of the forms
     thereof set forth in such Officer's  Certificate.  A form of such Officer's
     Certificate,  as well as  the Officer's  Certificate which  established the
     series  of Mortgage  Securities  designated First  Collateral Trust  Bonds,
     Series E, are on file with the Trustee and have been filed with the  SEC as
     an  exhibit  to  the  Registration Statement  (Registration  No.  33-63602)
     relating to the First Collateral Trust Bonds, Series E.

     THE TRUSTEE

          On  November 24, 1997, The Chase Manhattan Bank succeeded Mellon Bank,
     N.A. as Trustee under the Mortgage.


                                      S-9
     <PAGE>


     BOOK-ENTRY BONDS

          The Offered Bonds will be represented by global bonds (each, a "Global
     Bond") that will  be deposited with, or on behalf  of, The Depository Trust
     Company,  New York, New  York ("DTC"), or  such other depositary  as may be
     subsequently  designated   (DTC  and   any  other  such   depositary  being
     hereinafter referred to as the "Depositary"), and registered in the name of
     the Depositary, or its nominee (such an Offered Bond, so represented, being
     called  a "Book-Entry  Bond").    Except  under the  limited  circumstances
     described below, Book-Entry Bonds  represented by Global Bonds will  not be
     exchangeable for certificates  issued in definitive form  (any such Offered
     Bond, so represented,  being called  a "Certificated Bond"),  and will  not
     otherwise be issuable as Certificated Bonds.

          DTC  is a limited-purpose trust  company organized under  the New York
     Banking Law,  a "banking organization" within  the meaning of  the New York
     Banking   Law,  a  member  of  the  Federal  Reserve  System,  a  "clearing
     corporation"  within the meaning of  the New York  Uniform Commercial Code,
     and  a "clearing agency" registered  pursuant to the  provisions of Section
     17A of  the Exchange  Act.  DTC  was created  to hold  securities that  are
     deposited by institutions having accounts with  it ("participants"), and to
     facilitate the clearance and settlement of securities transactions, such as
     transfers  and pledges, among its participants in such deposited securities
     through  electronic  computerized book-entry  changes  in  accounts of  the
     participants,  thereby  eliminating  the  need  for  physical  movement  of
     securities certificates.  DTC's participants include securities brokers and
     dealers  (including  the Underwriters),  banks,  trust companies,  clearing
     corporations, and certain other  organizations, some of whom (and/or  their
     representatives)  own DTC.    Access to  DTC's  book-entry system  is  also
     available  to others,  such as  securities brokers  and dealers,  banks and
     trust companies  that clear through  or maintain  a custodial  relationship
     with a participant, either directly or indirectly.  The rules applicable to
     DTC and its participants are on file with the SEC.

          Purchases of beneficial interests in a Global Bond must be  made by or
     through the Depositary's participants.  Upon the issuance of a Global Bond,
     the Depositary  will credit,  on its  book-entry registration  and transfer
     system, the respective principal amounts of the individual Book-Entry Bonds
     represented by such  Global Bond to the accounts of  its participants.  The
     accounts to be credited will initially be designated by the Underwriters or
     the Company.   Ownership of beneficial  interests in a Global  Bond will be
     shown on, and the transfer of that ownership will be effected only through,
     records  maintained  by  the  Depositary  (with  respect  to  participants'
     interests)  or by  participants or persons  that hold  through participants
     (with respect to person other than  participants).  The laws of some states
     require that  certain purchasers  of securities  take physical  delivery of
     such  securities.   Such limits  and such  laws may  impair the  ability to
     transfer beneficial interests in a Global Bond.

          Payments  of principal  of  and  premium,  if  any,  and  interest  on
     individual Book-Entry Bonds  represented by a  Global Bond will be  made to
     the Depositary  or its nominee, as the  case may be, as  the Holder of such
     Global Bond.  The Depositary or its nominee, upon receipt of any payment of
     principal, premium or interest in respect of a definitive Global Bond, will
     credit  the accounts of the  related participants with  payments in amounts
     proportionate  to their  respective beneficial  interests in  the principal
     amount  of such  Global Bond  as shown  on the  records of  the Depositary.
     Payments by participants to  owners of beneficial interests in  such Global
     Bond   held  through  such  participants   will  be  governed  by  standing
     instructions  and customary practices, as  is now the  case with securities
     held for  the accounts of customers in bearer form or registered in "street
     name",  and will be the responsibility of  such participants and not of the
     Depositary,  the Company or any  Paying Agent, subject  to any statutory or
     regulatory requirements as may be in effect from time to time.  Payments to
     the Depositary are  the responsibility of the Company or  any Paying Agent,
     disbursement of such payments to the Depositary's participants shall be the
     responsibility  of the Depositary, and disbursement of such payments to the


                                      S-10
     <PAGE>


     owners  of beneficial interests in Global Bonds shall be the responsibility
     of  the  Depositary's  participants  and  persons  who  hold  through  such
     participants.

          So long as the Depositary, or  its nominee, is the registered owner of
     a Global Bond, such Depositary or such nominee, as the case may be, will be
     considered the sole holder  of the individual Book-Entry  Bonds represented
     by  such Global Bond  for all purposes  under the Mortgage.   Except as set
     forth below,  owners of beneficial interests  in a Global Bond  will not be
     entitled to have any of the individual Book-Entry Bonds represented by such
     Global Bond registered  in their names, will not receive  or be entitled to
     receive physical  delivery of  any such Book-Entry  Bonds and  will not  be
     considered  the  Holders thereof  under  the  Mortgage, including,  without
     limitation,  for  purposes  of  consenting  to  any  amendment  thereof  or
     supplement thereto  as described in  the accompanying Prospectus.   Neither
     DTC nor any  nominee will consent  or vote with  respect to the  Book-Entry
     Bonds.  Under its usual  procedures, DTC will mail an omnibus proxy  to the
     Company  as soon  as  possible after  the  appropriate record  date.   Such
     omnibus proxy  assigns the rights of DTC or its  nominee to vote or consent
     to those participants to  whose accounts the Book-Entry Bonds  are credited
     on  such record  date, identified  in  a listing  attached to  such omnibus
     proxy.

          If the  Depositary is at any  time unwilling or unable  to continue as
     depositary  and a successor depositary  is not appointed,  the Company will
     issue  individual Certificated  Bonds in  exchange for  the Global  Bond or
     Bonds representing the  corresponding Book-Entry Bonds.   In addition,  the
     Company may at any  time and in its sole  discretion determine not to  have
     any Bonds represented by one  or more Global Bonds, and in such event, will
     issue  individual Certificated  Bonds in  exchange for  the Global  Bond or
     Bonds  representing the  corresponding  Book-Entry  Bonds.    In  any  such
     instance,  an owner of  a Book-Entry Bond  represented by a  Global Bond or
     Bonds  will  be entitled  to physical  delivery of  individual Certificated
     Bonds equal  in principal amount to  such Book-Entry Bond and  to have such
     Certificated Bonds registered  in its name.  Individual  Certificated Bonds
     so  issued will be  issued as registered Offered  Bonds in denominations of
     $25 and integral multiples thereof.

          The information in  this section  concerning the DTC  and DTC's  book-
     entry system  is based upon information  furnished by DTC, and  the Company
     takes no responsibility for the accuracy thereof.

          None  of the  Company, the  Trustee  or any  agent for  payment on  or
     registration of  transfer or exchange of  such Offered Bonds  will have any
     responsibility or liability for  any aspect of the  records relating to  or
     payments made  on account of beneficial  interests in such Global  Bonds or
     for maintaining,  supervising  or reviewing  any records  relating to  such
     beneficial interests.

                                    LEGAL OPINIONS

          Legal matters in connection with the Offered Bonds will be passed upon
     for the Company  by David  R. High, Esq.,  employed by the  Company as  its
     Assistant General Counsel, and  by Reid &  Priest LLP, special counsel  for
     the Company, and for the  Underwriters by Milbank, Tweed, Hadley  & McCloy.
     All legal matters pertaining to title and the lien of  the Mortgage will be
     passed upon only by Mr. High.


                                      S-11
     <PAGE>

                                    UNDERWRITING

          Under the terms and subject to the conditions contained in the Selling
     Agency  Agreement,  dated  June 15,  1993,  as  supplemented  by the  Terms
     Agreement,  dated  the  date  hereof (the  "Underwriting  Agreement"),  the
     Underwriters named below (the "Underwriters"), for whom Credit Suisse First
     Boston  Corporation, Smith Barney, Inc.,  Goldman, Sachs &  Co. and Merrill
     Lynch, Pierce,  Fenner & Smith  Incorporated are acting  as representatives
     (the "Representatives"), have severally but not  jointly agreed to purchase
     from  the Company  the  following respective  principal amounts  of Offered
     Bonds:

                                                           Principal   
                                                             Amount    
                             Underwriters                Offered Bonds 
                             ------------                --------------

              Credit Suisse First Boston Corporation       $ 21,737,500
              Smith Barney, Inc.  . . . . . . . . . .        21,737,500
              Goldman, Sachs & Co.  . . . . . . . . .        21,700,000
              Merrill Lynch, Pierce, Fenner & Smith
                      Incorporated  . . . . . . . . .        21,700,000
              BT Alex. Brown Incorporated . . . . . .           875,000
              BNY Capital Markets Incorporated - NJ .           875,000
              Dain Rauscher Incorporated  . . . . . .           875,000
              A.G. Edwards & Sons, Inc. . . . . . . .           875,000
              EVEREN Securities, Inc. . . . . . . . .           875,000
              Janney Montgomery Scott Inc.  . . . . .           875,000
              Edward D. Jones & Co., L.P. . . . . . .           875,000
              Legg Mason Wood Walker, Incorporated. .           875,000
              McDonald & Company Securities, Inc. . .           875,000
              Parker/Hunter Incorporated  . . . . . .           875,000
              Prudential Securities Incorporated  . .           875,000
              Pryor, McClendon, Counts & Co., Inc.. .           875,000
              The Robinson-Humphrey Company, LLC. . .           875,000
              SBC Warburg Dillon Read Inc.  . . . . .           875,000
              Wheat First Securities, Inc.  . . . . .           875,000
                                                           ------------
                   Total  . . . . . . . . . . . . . .      $100,000,000
                                                           ============
                                                                       

          The  Underwriting  Agreement  provides  that the  obligations  of  the
     Underwriters  are   subject  to  certain  conditions   precedent,  and  the
     Underwriters will be obligated to purchase  all of the Offered Bonds if any
     are purchased.

          The Company  and the  Underwriters have  agreed that  the underwriting
     discount  will  be 3.15%  per offered  Bond,  except that  the underwriting
     discount  will  be   2%  per  Offered  Bond  for  bonds   sold  to  certain
     institutions.  The Company has been advised by the Representatives that the
     Underwriters propose to offer the Offered Bonds to the public  initially at
     the public  offering price set forth  on the cover page  of this Prospectus
     Supplement, and to certain dealers at such price less a concession of 2% of
     the principal amount  of such Offered Bonds, and the  Underwriters and such
     dealers may  allow a  discount  of 1.4%  of the  principal  amount of  such
     Offered Bonds on sales to certain  other dealers.  After the initial public
     offering, the offering price and concession and discount to dealers may  be
     changed by the Representatives.


                                      S-12
     <PAGE>


          The Company has agreed, during  the period of 15 days from the date of
     the  Underwriting Agreement, not to issue or announce the proposed issuance
     of  any  of its  secured  debt securities  with  maturities or  other terms
     substantially similar  to the  Offered Bonds (other  than borrowings  under
     revolving credit agreements and lines of credit and issuances of commercial
     paper), without the prior written consent of the Representatives.

          The Offered Bonds are  a new issue  of securities with no  established
     trading market.   The Offered Bonds  have been approved for  listing on the
     New York Stock Exchange  ("NYSE"), subject to official notice  of issuance.
     Trading of the Offered  Bonds on the NYSE is expected  to commence within a
     30-day period after the initial delivery of the Offered Bonds.  In order to
     meet one of the requirements for listing the Offered Bonds on the NYSE, the
     Underwriters have undertaken to sell the Offered Bonds to a  minimum of 400
     beneficial holders.   The Company has been advised by the Underwriters that
     they intend to make a market in the Offered Bonds, but the Underwriters are
     not obligated  to do so and  may discontinue any market-making  at any time
     without  notice.   No assurance  can be  given as to  the liquidity  of the
     trading market for the Offered Bonds.

          The  Company has agreed to indemnify  the Underwriters against certain
     liabilities,  including  civil liabilities  under  the  Securities Act,  or
     contribute  to payments which  the Underwriters may be  required to make in
     respect thereof.

          The Representatives,  on behalf  of  the Underwriters,  may engage  in
     over-allotment, stabilizing transactions,  syndicate covering  transactions
     and penalty bids.  Over-allotment involves syndicate sales in excess of the
     offering  size,  which creates  a  syndicate short  position.   Stabilizing
     transactions permit bids to purchase the underlying security so long as the
     stabilizing bids do  not exceed  a specified maximum.   Syndicate  covering
     transactions  involve purchases  of the  Offered Bonds  in the  open market
     after the distribution has been completed in order to cover syndicate short
     positions.   Penalty bids permit  the Representatives to  reclaim a selling
     concession from a syndicate  member when the Offered Bonds  originally sold
     by  such syndicate member are purchased in a syndicate covering transaction
     to  cover  syndicate  short  positions.    Such  stabilizing  transactions,
     syndicate covering transactions and penalty bids may cause the price of the
     Offered  Bonds to be higher  than it would  otherwise be in  the absence of
     such  transactions.   These  transactions may  be effected  on the  NYSE or
     otherwise and, if commenced, may be discontinued at any time.

          Credit  Suisse First  Boston Corporation,  Salomon Smith  Barney Inc.,
     Goldman Sachs & Co. and Merrill  Lynch, Pierce, Fenner & Smith Incorporated
     and certain  affiliates thereof  engage in  transactions  with and  perform
     services for  the Company  and  its affiliates  in the  ordinary course  of
     business.


                             NOTICE TO CANADIAN RESIDENTS

     RESALE RESTRICTIONS

          The distribution of the Offered Bonds  in Canada is being made only on
     a  private placement  basis exempt  from the  requirement that  the Company
     prepare and file a prospectus with the securities regulatory authorities in
     each province where trades of Offered Bonds are effected.  Accordingly, any
     resale  of the  Offered Bonds  in Canada  must be  made in  accordance with
     applicable  securities  laws, which  will  vary depending  on  the relevant
     jurisdiction, and which  may require resales to be made  in accordance with
     available  statutory exemptions  or pursuant  to a  discretionary exemption
     granted  by  the  applicable   Canadian  securities  regulatory  authority.
     Purchasers are  advised to  seek legal  advice prior to  any resale  of the
     Offered Bonds.


                                      S-13
     <PAGE>


     REPRESENTATIONS OF PURCHASERS

          Each  purchaser of  Offered Bonds  in Canada  who receives  a purchase
     confirmation will be deemed to represent to the Company and the dealer from
     whom  such purchase  confirmation is  received that  (i) such  purchaser is
     entitled  under  applicable provincial  securities  laws  to purchase  such
     Offered  Bonds without  the benefit  of a  prospectus qualified  under such
     securities  laws,  (ii)  where required  by  law,  that  such purchaser  is
     purchasing as  principal and  not as  agent, and (iii)  such purchaser  has
     reviewed that text above under "Resale Restrictions."

     RIGHTS OF ACTION (ONTARIO PURCHASERS)

          The securities being offered are those of a foreign issuer and Ontario
     purchasers will not receive  the contractual right of action  prescribed by
     section 32  of the  Regulation under  the Securities Act  (Ontario).   As a
     result,  Ontario purchasers  must  rely  on  other  remedies  that  may  be
     available,  including common law rights of action for damages or rescission
     or rights  of  action under  the  civil liability  provisions  of the  U.S.
     federal securities laws.

     ENFORCEMENT OF LEGAL RIGHTS

          All  of the  issuer's directors and  officers as  well as  the experts
     named herein may be located outside of Canada and, as a result, it  may not
     be possible for  Canadian purchasers  to effect service  of process  within
     Canada upon  the issuer or such persons.   All or a  substantial portion of
     the assets of  the issuer and such persons may be located outside of Canada
     and,  as a result, it may not be possible to satisfy a judgment against the
     issuer  or such  persons in  Canada or  to enforce  a judgment  obtained in
     Canadian courts against such issuer or persons outside of Canada.

     NOTICE TO BRITISH COLUMBIA RESIDENTS

          A  purchaser  of Offered  Bonds to  whom  the Securities  Act (British
     Columbia) applies is advised  that such purchaser is required  to file with
     the British Columbia  Securities Commission a report within ten days of the
     sale  of any  Offered Bonds  acquired by  such purchaser  pursuant to  this
     offering.  Such  report must be  in the form  attached to British  Columbia
     Securities Commission Blanket Order BOR #95/17.  Only one  such report must
     be filed in  respect of Offered Bonds  acquired on the same date  and under
     the same prospectus exemption.

     TAXATION AND ELIGIBILITY FOR INVESTMENT

          Canadian purchasers  of Offered Bonds  should consult their  own legal
     and tax  advisors with respect to  the tax consequence of  an investment in
     the Offered Bonds in their particular circumstances and with respect to the
     eligibility  of the  Offered Bonds  for investment  by the  purchaser under
     relevant Canadian legislation.


                                      S-14
     <PAGE>



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

     NO DEALER, SALESPERSON OR OTHER
     PERSON HAS BEEN AUTHORIZED TO GIVE
     ANY INFORMATION OR TO MAKE ANY
     REPRESENTATION NOT CONTAINED IN THIS
     PROSPECTUS SUPPLEMENT OR THE                          $100,000,000
     PROSPECTUS AND, IF GIVEN OR MADE,
     SUCH INFORMATION OR REPRESENTATION
     MUST NOT BE RELIED UPON AS HAVING
     BEEN AUTHORIZED BY THE COMPANY OR
     ANY UNDERWRITER.  THIS PROSPECTUS
     SUPPLEMENT AND THE PROSPECTUS DO
     NOT CONSTITUTE AN OFFER TO SELL OR
     A SOLICITATION OF AN OFFER TO BUY
     ANY OF THE SECURITIES OFFERED                            [LOGO]
     HEREBY IN ANY JURISDICTION TO ANY
     PERSON TO WHOM IT IS UNLAWFUL TO                     DUQUESNE LIGHT
     MAKE SUCH OFFER IN SUCH                                  COMPANY
     JURISDICTION.  NEITHER THE DELIVERY
     OF THIS PROSPECTUS SUPPLEMENT OR THE
     PROSPECTUS NOR ANY SALE MADE
     HEREUNDER SHALL, UNDER ANY
     CIRCUMSTANCES, CREATE ANY
     IMPLICATION THAT THE INFORMATION
     HEREIN IS CORRECT AS OF ANY TIME
     SUBSEQUENT TO THE DATE HEREOF OR
     THAT THERE HAS BEEN NO CHANGE IN THE                7 3/8% Quarterly
     AFFAIRS OF THE COMPANY SINCE SUCH                    Interest Bonds
     DATE.                                                   Due 2038

          ___________________

          TABLE OF CONTENTS

                                    Page
                                    ----

          PROSPECTUS SUPPLEMENT

     Summary of Offering . . . . . . S-3
     Capitalization  . . . . . . . . S-4
     Recent Developments . . . . . . S-5
     Ratio of Earnings to Fixed
       Charges . . . . . . . . . . . S-6
     Use of Proceeds . . . . . . . . S-6               PROSPECTUS SUPPLEMENT
     Supplemental Description of the
       Offered Bonds . . . . . . . . S-6
     Legal Opinions  . . . . . . .  S-11
     Underwriting  . . . . . . . .  S-12
     Notice to Canadian Residents   S-13            CREDIT SUISSE FIRST BOSTON


               PROSPECTUS

     Available Information . . . . . . 2               SALOMON SMITH BARNEY
     Incorporation of Certain Documents
       by Reference  . . . . . . . . . 2
     The Company . . . . . . . . . . . 2
     Use of Proceeds . . . . . . . . . 3               GOLDMAN, SACHS & CO.
     Plan of Distribution  . . . . . . 3
     Description of the Bonds  . . . . 4
     Description of the 1947                            MERRILL LYNCH & CO.
       Mortgage  . . . . . . . . . .  17
     Experts . . . . . . . . . . . .  24
     Legal Opinions  . . . . . . . .  24
     Pennsylvania Taxes  . . . . . .  24


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




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