TRIGEN ENERGY CORP
SC TO-T/A, 2000-03-17
STEAM & AIR-CONDITIONING SUPPLY
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                     SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, DC 20549

                                SCHEDULE TO
                               (RULE 14D-100)

        TENDER OFFER STATEMENT UNDER SECTION 14(D)(1) OR 13(E)(1) OF
                    THE SECURITIES EXCHANGE ACT OF 1934.

                             (AMENDMENT NO. 2 )

- ---------------------------------------------------------------------------
                         TRIGEN ENERGY CORPORATION
- ---------------------------------------------------------------------------
                     (Name of Subject Company (Issuer))

                       T ACQUISITION CORP. (OFFEROR)
                                    ELYO
                          SUEZ LYONNAISE DES EAUX
                         TRIGEN ENERGY CORPORATION
- ---------------------------------------------------------------------------
          (Names of Filing Persons (identifying status as offeror,
                         issuer or other person))

                       COMMON STOCK, $0.01 PAR VALUE
- ---------------------------------------------------------------------------
                       (Title of Class of Securities)

                                 895930105
- ---------------------------------------------------------------------------
                   (CUSIP Number of Class of Securities)

                              MICHEL BLEITRACH
                                    ELYO
                       235 AVENUE GEORGES CLEMONCEAU
                                  BP 4601
                        92746 NANTERRE CEDEX, FRANCE
                            011-331-41-20-10-10

                              WITH A COPY TO:

                               JEFFREY BAGNER
                  FRIED, FRANK, HARRIS, SHRIVER & JACOBSON
                             ONE NEW YORK PLAZA
                       NEW YORK, NEW YORK 10004-1980
                               (212) 859-8000
- ---------------------------------------------------------------------------
       (Name, address, and telephone numbers of person authorized to
      receive notices and communications on behalf of filing persons)

                         CALCULATION OF FILING FEE
- ---------------------------------------------------------------------------
Transaction Valuation* $173,487,223           Amount Of Filing Fee $34,698
- ---------------------------------------------------------------------------

   * ESTIMATED FOR PURPOSES OF CALCULATING THE AMOUNT OF THE FILING FEE
     ONLY. THIS AMOUNT ASSUMES THE PURCHASE OF 7,382,435 SHARES OF COMMON
     STOCK, PAR VALUE $.01 PER SHARE (THE "SHARES"), OF TRIGEN ENERGY
     CORPORATION, A DELAWARE CORPORATION (THE "COMPANY"), AT THE TENDER
     PRICE OF $23.50 PER SHARE NET TO THE SELLER IN CASH, WITHOUT INTEREST
     THEREON. PURSUANT TO THE AGREEMENT AND PLAN OF MERGER, DATED AS OF
     JANUARY 19, 2000, AMONG ELYO ("PARENT"), T ACQUISITION CORP. AND THE
     COMPANY, THE COMPANY REPRESENTED THAT AS OF SUCH DATE, IT HAD
     12,416,297 SHARES OUTSTANDING AND 849,210 SHARES RESERVED FOR ISSUANCE
     UPON EXERCISE OF ALL OUTSTANDING OPTIONS UNDER THE COMPANY'S EMPLOYEE
     BENEFIT PLANS. PARENT ALREADY BENEFICIALLY OWNS 6,507,944 SHARES, OF
     WHICH THE 1,637,274 SHARES HELD BY COMPAGNIE PARISENNE DE CHAUFFAGE
     URBAIN ("CPCU"), A NON-WHOLLY-OWNED SUBSIDIARY OF PARENT, WILL BE
     TENDERED. PARENT HAS SEPARATELY AGREED TO PURCHASE 1,012,402 SHARES
     FROM THOMAS R. CASTEN ON MARCH 29, 2000, PURSUANT TO A PURCHASE
     AGREEMENT, DATED JANUARY 19, 2000 BETWEEN PARENT AND MR. CASTEN. BASED
     ON THE FOREGOING, THE TRANSACTION VALUE IS EQUAL TO THE PRODUCT OF (I)
     (A) 12,416,297 SHARES (THE NUMBER OF SHARES OUTSTANDING), PLUS (B)
     849,210 SHARES (THE NUMBER OF SHARES RESERVED FOR ISSUANCE UPON
     EXERCISE OF OPTIONS), MINUS (C) THE DIFFERENCE OF (1) 6,507,944 (THE
     NUMBER OF SHARES BENEFICIALLY OWNED BY PARENT) MINUS (2) 1,637,274
     (THE NUMBER OF SHARES HELD BY CPCU BEING TENDERED), MINUS (D)
     1,012,402 (THE NUMBER OF SHARES HELD BY MR. CASTEN), MULTIPLIED BY
     (II) $23.50. THE AMOUNT OF THE FILING FEE, CALCULATED IN ACCORDANCE
     WITH RULE 0-11 UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED,
     EQUALS 1/50 OF ONE PERCENT OF THE AGGREGATE OF THE CASH OFFERED BY THE
     BIDDER.

   [x]CHECK THE BOX IF ANY PART OF THE FEE IS OFFSET AS PROVIDED BY RULE
     0-11(A)(2) AND IDENTIFY THE FILING WITH WHICH THE OFFSETTING FEE WAS
     PREVIOUSLY PAID. IDENTIFY THE PREVIOUS FILING BY REGISTRATION
     STATEMENT NUMBER, OR THE FORM OR SCHEDULE AND THE DATE OF ITS FILING.

  Amount Previously Paid:    $34,698
  Form or Registration No.:  Schedule TO-T
  Filing Party:              T Acquisition Corp., Elyo, Suez Lyonnaise des Eaux
  Date Filed:                February 28, 2000

   [ ] Check the box if the filing relates solely to preliminary
       communications made before the commencement of a tender offer.

   Check the appropriate boxes below to designate any transactions to which
   the statement relates:

   [x] third-party tender offer subject to Rule 14d-1.
   [ ] issuer tender offer subject to Rule 13e-4.
   [x] going-private transaction subject to Rule 13e-3.
   [ ] amendment to Schedule 13D under Rule 13d-2.

   Check the following box if the filing is a final amendment reporting the
   results of the tender offer: [ ]
<PAGE>
                                INTRODUCTION

          This Amendment No. 2 (this  "Amendment")  amends and  supplements
the Tender  Offer  Statement on Schedule TO filed with the  Securities  and
Exchange  Commission  on February  28,  2000,  by T  Acquisition  Corp.,  a
Delaware corporation  ("Purchaser"),  Elyo, a societe anonyme organized and
existing  under  the laws of the  Republic  of France  ("Parent")  and Suez
Lyonnaise des Eaux, a societe anonyme organized and existing under the laws
of the Republic of France. By this amendment,  Trigen Energy Corporation, a
Delaware  corporation,  is added  as a  person  filing  this  Tender  Offer
Statement.  The  Schedule TO relates to the offer to  purchase  any and all
outstanding  shares of Common  Stock,  par value $.01 per share,  of Trigen
Energy Corporation,  a Delaware corporation (the "Company"),  at a purchase
price of $23.50 per share,  net to the  seller in cash,  without  interest,
upon the  terms and  subject  to the  conditions  set forth in the Offer to
Purchase  dated  February  28, 2000 (the "Offer to  Purchase"),  and in the
related  Letter of  Transmittal  (which,  together  with any  amendments or
supplements thereto,  collectively constitute the "Offer"), copies of which
are filed as Exhibits  (a)(1)(i) and (a)(1)(ii) hereto,  respectively,  and
which are incorporated herein by reference.  Capitalized terms used and not
defined herein shall have the meanings  assigned to such terms in the Offer
to Purchase and the Schedule TO.

ITEM 11.  Additional Information.

          (a) Item 11 is hereby  amended by adding the following  paragraph
immediately prior to the fourth paragraph on page 2 under "INTRODUCTION" in
the Offer to Purchase:

               One of the members of the Special  Committee,  George Keane,
          is also a director of United Water  Resources  Inc., a New Jersey
          corporation   ("UWR").   Suez  beneficially  owns  30.1%  of  the
          outstanding  shares of UWR common stock.  Suez has entered into a
          merger  agreement  with UWR  pursuant  to which its wholly  owned
          subsidiary  has agreed to  purchase  the shares of UWR it did not
          already own. Consummation of the transactions contemplated by the
          merger  agreement is pending  certain  regulatory  approvals.  In
          appointing Mr. Keane to the Special  Committee,  the directors of
          the Company,  including  Mr.  Bayless,  believed (and continue to
          believe) that Mr. Keane's role as a director of UWR, which at the
          time of Mr. Keane's  appointment to the Special Committee was not
          a subsidiary  of Suez and is not  currently a subsidiary of Suez,
          was unlikely to impact his independence  with respect to Parent's
          proposal  to acquire the Shares of the Company it did not already
          own. The directors of the Company,  including Mr.  Bayless,  also
          believed that the stockholders of the Company not affiliated with
          Suez,  Parent or Purchaser would be better served by a two person
          committee  including Mr. Keane rather than a one person committee
          consisting solely of Mr. Bayless.

          (b) Item 11 is hereby  amended by adding the  following  language
after the last  sentence of the first  paragraph  on page 3 under  "SPECIAL
FACTORS  -  Background  of the  Offer  and the  Merger;  Contacts  with the
Company" in the Offer to Purchase:

          The concerns  expressed by Mr. Casten in his memorandum  included
          the lack of prior consultation with certain members of management
          regarding  Parent's  proposal,  the value of providing  employees
          with  an  equity  stake  in  the  Company,   the   advantages  of
          maintaining  an American  image for the  Company and  uncertainty
          over where the Company fit into Suez's strategy.

          (c) Item 11 is hereby amended by adding the following language at
the  end of the  third  sentence  of the  third  paragraph  on page 3 under
"SPECIAL  FACTORS - Background  of the Offer and the Merger;  Contacts with
the Company" in the Offer to Purchase:

          In this  statement,  Parent  assured  the Special  Committee  and
          management  that  Parent  intended  to  reinforce  the  Company's
          business strategy and its market position.  Parent also addressed
          the advantages of taking the Company private, including reduction
          of administrative costs, quicker decision-making capabilities and
          more flexibility in the face of changing markets, and an improved
          ability  to  obtain  financing  for  the  Company.   Parent  also
          emphasized  the  importance  of  the  role  of  Americans  in the
          Company's management.  Parent indicated that it had hired a human
          resources  firm to help propose an  attractive  compensation  and
          benefits package for the Company's  employees,  and noted that as
          part of Parent Group  employees  would have access to significant
          career opportunities.  Finally,  Parent affirmed that energy is a
          core business of the Parent Group,  and that the United States is
          a key market for the Parent Group.

          (d) Item 11 is hereby  amended  by  amending  and  restating  the
second sentence of the third  paragraph on page 4 under "SPECIAL  FACTORS -
Background  of the Offer and the Merger;  Contacts with the Company" in the
Offer to Purchase as follows:

          In that regard,  certain confidential  information concerning the
          Company was, with the  authorization of the Special Committee and
          pursuant to customary confidentiality agreements,  distributed on
          an extremely limited basis.

          (e) Item 11 is hereby  amended by adding the  following  language
after the first sentence of the carryover  paragraph on pages 4 and 5 under
"SPECIAL  FACTORS - Background  of the Offer and the Merger;  Contacts with
the Company" in the Offer to Purchase:

          Prior to its initial  public  offering,  the  Company  relied for
          capital  development  funds almost entirely on project  financing
          with  Parent  providing   credit  support.   Commencing  in  1995
          management  began  urging  the  Board  of  Directors  to  move to
          corporate  level  financing  which did not require  Parent credit
          support.  From 1996 to 1998,  the  Company  increased  borrowings
          available  to it  under  its  revolving  credit  facility  with a
          syndicate of banks to $195  million,  in order to ensure that the
          Company's  ongoing  financial  requirements  were fully  met.  In
          addition,  management urged the issuance of public debt,  coupled
          with a  secondary  offering  of equity.  In  mid-1996,  the Board
          authorized  management to undertake  preliminary work for such an
          offering, and management continued to discuss and propose various
          combinations  of public  debt and  equity  financing  in 1997 and
          1998. In mid-1998, the Board of Directors authorized the issuance
          of $225 million of 10-year fixed rate corporate bonds, subject to
          approval of final terms and conditions.  This  authorization  was
          increased to $290 million in December 1998. However, for a number
          of reasons, neither a public debt issuance nor a secondary equity
          offering were  undertaken.  These reasons  included poor earnings
          performance  during the prior two years,  the inability to secure
          investment  grade ratings for corporate debt,  market  conditions
          not  conducive  to issuance of bonds,  and the major  shareholder
          concerns about dilution.  The dilution  concern obliged the major
          shareholder to commit to purchase 55% of any new equity issued by
          the Company in order to maintain its majority position, which led
          its  representatives  on  the  Board  to  proceed  cautiously  in
          planning a secondary equity  offering.  To insure that short term
          financial  requirements were met, Parent made a subordinated loan
          to the Company in the amount of $50 million in December  1998 and
          has authorized an additional $50 million  subordinated loan, both
          on terms approved by the independent directors.

          (f) Item 11 is hereby  amended  by  amending  and  restating  the
second  sentence  of the second  full  paragraph  on page 5 under  "SPECIAL
FACTORS  -  Background  of the  Offer  and the  Merger;  Contacts  with the
Company" in the Offer to Purchase as follows:

          Mr.  Casten  believed  that  the  image of a  foreign  controlled
          company  was a  hindrance  to  the  Company's  success.  He  also
          believed that the Board of Directors should have more independent
          directors than the mandatory  minimum of two required for listing
          on the New York Stock Exchange.  Parent agreed to the addition of
          one  more  independent  director,  but  found  objections  to all
          candidates  proposed by Mr.  Casten.  Moreover,  Parent  wanted a
          numeric majority of directors (e.g., five of a total of nine), so
          that the addition of multiple  outside  directors would lead to a
          large,  unwieldy  Board of Directors.  Mr.  Casten  believed that
          Parent  failed to include the  Company's  management in strategic
          planning  issues that  directly  affected  the  Company.  He also
          believed  that  the  decision-making  process  of  the  Board  of
          Directors, especially with respect to development and mergers and
          acquisitions   efforts,  was  too  slow  and  cumbersome  for  an
          entrepreneurial    company.   Mr.   Casten   also   opposed   the
          privatization   of  the   Company   since  all   employees   were
          stockholders  and stock and stock  options were deemed  essential
          inducements  to attract and  maintain  entrepreneurial  managers.
          Parent  disagreed  with Mr.  Casten's  views  on  these  matters.
          Investment criteria and budgets were mutually agreed upon between
          management and the Board of Directors.  Parent  believed that Mr.
          Casten  was   adequately   informed  of  Parent's   strategy  and
          activities.  Parent believed that its deliberate  decision making
          process was prudent and  satisfactory.  Parent also believed that
          the Company  could  operate  successfully  as a private  company.
          Since  meetings  between  Parent and Mr. Casten did not result in
          general  agreement over strategic and governance  issues,  Parent
          came to believe that the Company required new leadership.

          (g) Item 11 is hereby  amended by adding the  following  sentence
immediately  following the caption "The Special  Committee" on page 5 under
"SPECIAL FACTORS - Recommendation of the Special Committee and the Board of
Directors  of the  Company;  Fairness  of the Offer and the  Merger" in the
Offer to Purchase:

          The Special  Committee  concluded that the terms of the Offer and
          the  Merger  are  fair  to,  and in the best  interests  of,  the
          stockholders of the Company other than Parent.

          (h) Item 11 is hereby  amended by adding the  following  sentence
adding  at the  end  of  item  (i)  on  page 6  under  "SPECIAL  FACTORS  -
Recommendation  of the Special  Committee and the Board of Directors of the
Company; Fairness of the Offer and the Merger" in the Offer to Purchase:

          The  Company  may  obtain   additional   capital   only  if  such
          transaction is approved by the Board of Directors,  a majority of
          which is comprised  of  affiliates  of Parent.  This fact was not
          relevant to the fairness determination.

          (i) Item 11 is hereby amended by adding the following sentence at
the end of item (viii) on page 7 under "SPECIAL FACTORS - Recommendation of
the Special  Committee and the Board of Directors of the Company;  Fairness
of the Offer and the merger" in the Offer to Purchase:

          The Special  Committee  concurred in the analyses and conclusions
          of CSFB.

          (j) Item 11 is hereby  amended by adding the following at the end
of  the  first  full  paragraph  on  page  7  under   "SPECIAL   FACTORS  -
Recommendation  of the Special  Committee and the Board of Directors of the
Company; Fairness of the Offer and the Merger" in the Offer to Purchase:

          These  reports  included a report  published by Lazard  Freres on
          July 29, 1999 that had a  potential  value for the Company of $30
          per  share  in  twelve  to  eighteen  months  from  the  date  of
          publication. The Special Committee recognized, however, that this
          report was prepared by Lazard Freres' research  analyst,  who did
          not have the same  familiarity  with the  Company's  business  or
          access to non-public  information  as did the Special  Committee,
          the Board of Directors, Parent or their advisors.

          (k) Item 11 is hereby  amended by adding the following  after the
last sentence of the second full paragraph on page 7 under "SPECIAL FACTORS
- - Recommendation of the Special Committee and the Board of Directors of the
Company; Fairness of the Offer and the Merger" in the Offer to Purchase:

          The Board of  Directors  adopted  the  discussion  of the factors
          considered  by the Special  Committee  in reaching  its  fairness
          determination.

         (l) Item 11 is hereby amended by adding the following language at
the end of the third paragraph, before the colon, on page 8 under "SPECIAL
FACTORS - Position of Suez, Parent and Purchaser Regarding Fairness of the
Offer and the Merger" in the Offer to Purchase as follows:

          (each of which Suez, Parent and Purchaser  believed supported its
          conclusion regarding the fairness of the Offer and the Merger)

          (m) Item 11 is hereby  amended by adding the  following  language
after the first paragraph under "SPECIAL FACTORS - Position of Suez, Parent
and Purchaser  Regarding Fairness of the Offer and the Merger" in the Offer
to Purchase:

               The foregoing  factors are the sole factors Suez, Parent and
          Purchaser  considered relevant in determining the fairness of the
          Offer and the Merger to the Public Stockholders. Suez, Parent and
          Purchaser did not consider net book value or liquidation value of
          the Company,  as Suez,  Parent and  Purchaser  believe that those
          methodologies   are   not   considered    appropriate   valuation
          methodologies   by  the  financial   community,   absent  special
          circumstances.  The Offer Price is substantially  higher than the
          net book value or liquidation value of the Company.

               Suez, Parent and Purchaser  recognize that the Offer and the
          Merger were not  structured to require the approval of a majority
          of the Shares  held by the Public  Stockholders  and that  Parent
          currently  has  sufficient  voting power to approve the Offer and
          the Merger without the affirmative vote of any other  stockholder
          of the Company.  However, Suez, Parent and Purchaser believe that
          the transactions  are procedurally  fair because of the following
          factors:

               (i) The Special  Committee  was  appointed to represent  the
          interests of the Public Stockholders.

               (ii) The Special  Committee  retained separate outside legal
          counsel to assist it in  evaluating  and  negotiating a potential
          transaction with Parent.

               (iii) The Special Committee retained CSFB as its independent
          financial  advisor to assist it in evaluating  and  negotiating a
          potential transaction with Parent.

               (iv) The Offer Price and the other terms and  conditions  of
          the  Offer  and  the  Merger  resulted  from  active  arms-length
          bargaining between  representatives of the Special Committee,  on
          the one hand, and representatives of Parent, on the other hand.

               (v) Any Public  Stockholders  desiring to do so may exercise
          and perfect  their  appraisal  rights  under the DGCL and receive
          "fair value" for their Shares as determined by the court.

          (n) Item 11 is hereby  amended by adding the  following  language
after  the last  sentence  in the  second  full  paragraph  on page 9 under
"SPECIAL  FACTORS  -  Position  of Suez,  Parent  and  Purchaser  Regarding
Fairness of the Offer and the Merger" in the Offer to Purchase:

          The  affiliates  of Suez that have engaged CSFB to provide  these
          services  have agreed to pay CSFB a maximum  fee of $900,000  for
          its services in connection with the privatization project, and an
          amount up to 0.35% of the total funds  raised for its services in
          connection  with  the  monetization  project.  Suez,  Parent  and
          Purchaser   believe  that  the  engagement  of  CSFB  by  certain
          affiliates  of Suez is immaterial to the Offer and the Merger and
          neither supports nor detracts from its fairness determination.

          (o) Item 11 is hereby  amended  by  replacing  the  reference  to
"Parent's personnel or any other person" with "Suez,  Parent,  Purchaser or
their respective personnel" in the last sentence of the carryover paragraph
on  pages 10 and 11 under  the  caption  "Other  Analyses"  under  "SPECIAL
FACTORS  -  Analysis  of  Financial  Advisor  to  Parent"  in the  Offer to
Purchase.

          (p) Item 11 is hereby amended by amending the carryover paragraph
on pages 16 and 17 under "SPECIAL FACTORS - Company Financial  Projections"
in the Offer to Purchase by (i) replacing every reference to "SUEZ, PARENT,
PURCHASER  OR THE  COMPANY  OR ANY  OTHER  PERSON"  with  "  SUEZ,  PARENT,
PURCHASER,  THEIR  FINANCIAL  ADVISOR  OR CSFB OR ANY OF  THEIR  RESPECTIVE
OFFICERS AND  DIRECTORS"  and (ii) adding the following  language after the
fourth sentence:

          NEITHER THE  COMPANY NOR ANY OF ITS  OFFICERS  AND  DIRECTORS  IS
          MAKING ANY REPRESENTATIONS AS TO THE PROJECTIONS INCLUDED IN THIS
          OFFER TO  PURCHASE  OTHER THAT THEY WERE  PREPARED  IN GOOD FAITH
          BASED ON  ASSUMPTIONS  THAT WERE BELIEVED TO BE REASONABLE AT THE
          TIME OF PREPARATION.

          (q) Item 11 is hereby amended adding the following language after
the second sentence the first paragraph on page 18 under "SPECIAL FACTORS -
Purpose and  Structure of the Offer and the Merger;  Plans for the Company"
in the Offer to Purchase:

          Parent has undertaken  the  transaction at this time for a number
          of reasons,  including the following:  As indicated above, Parent
          determined in late 1999 to request the resignation of Mr. Casten.
          The Special  Committee  members upon  learning of this  decision,
          requested that the Parent revive its going private proposal.  See
          "-  Background  of  Offer  and  the  Merger;  Contacts  with  the
          Company," above. Second, the Parent determined that the Company's
          need  for  immediate  capital  to meet  certain  project  related
          funding  requirements  would be more  easily  implemented  if the
          Company was wholly owned by parent.  Third,  Parent believed that
          the  Company  was  at  a  critical   time  with  respect  to  its
          development  and growth.  While the Company has recently  added a
          number of  significant  customers  and has a number of identified
          but unsigned development contracts,  Parent does not believe that
          the  Company's  existing  credit  facilities  could  support  the
          additional capital requirements that these projects would demand,
          or that  these  capital  requirements  could be  achieved  in the
          public   markets   on  terms   compatible   with  the   Company's
          profitability objectives and current financial structure.  Parent
          believes  that  "going  private"  will allow the  Company to have
          access to better financing conditions and capital.

          (r) Item 11 is hereby  amended by adding the  following  language
after the last sentence of the carryover paragraph on pages 34 and 35 under
"SPECIAL FACTORS -Beneficial Ownership of Shares" in the Offer to Purchase:

          The  table  also  sets  forth  the  same   beneficial   ownership
          information concerning the remaining directors of the Company and
          its executive officers.  Except as indicated below, the executive
          officers and directors of the Company do not own any Shares.

          (s) Item 11 is hereby amended by adding the following language to
the  table on page 35  under  "SPECIAL  FACTORS  -Beneficial  Ownership  of
Shares" in the Offer to Purchase:

George F. Keane..........................     27,275        30,000        *
Richard E. Kessel(4), (5) ...............     46,813        48,000        *
Charles E. Bayless.......................      9,949        10,000        *
Eugene E. Murphy(4), (5).................    163,528        18,600       1.3%
Benoit Ansart (4)........................      8,359        18,600        *
Daniel Fiore(4)..........................      6,523        9,000         *
Mark C. Hall(4), (5).....................      7,053        9,000         *
Steven G. Smith(4), (5)..................     26,143        26,900        *
Stephen K. Swinson(4), (5)...............     19,964        18,700        *
Jean M. Malahieude(4)....................     39,503        36,600        *
Martin Stone(4), (5).....................     13,125        9,000         *
James F. Lowry(4), (5)...................     17,541        21,500        *
Daniel J. Samela(4), (5).................      2,169        11,000        *
Stephen T. Ward(4), (5)..................      2,239        11,000
All directors and executive
officers of the Company, as a group......    1,490,303     408,000      12.0%

          (t) Item 11 is hereby  amended by adding the  following  language
after footnote (3) on page 35 under "SPECIAL FACTORS -Beneficial  Ownership
of Shares" in the Offer to Purchase:

          (4) On January 11, 2000, the following  executive officers of the
          Company were issued  dividend  reinvestment  Shares in connection
          with their  restricted  stock  ownership:  Benoit Ansart  (14.459
          Shares),  Daniel  Fiore  (13.402  Shares),  Mark C. Hall  (13.382
          Shares),  Richard  E.  Kessel  (56.508  Shares),  James F.  Lowry
          (27.207 Shares),  Jean M. Malahieude  (56.508 Shares),  Eugene E.
          Murphy (27.207 Shares),  Daniel J. Samela (2.930 Shares),  Steven
          G.  Smith  (37.672  Shares),  Martin S.  Stone  (20.241  Shares),
          Stephen K.  Swinson  (33.486  Shares)  and Stephen T. Ward (2.930
          Shares).

          (5) On January 11, 2000,  the following  executive  officers were
          issued dividend  reinvestment  Shares in their individual  401(k)
          Plan accounts maintained by Fidelity Management Trust Company, in
          connection  with the Company's  common stock  contributed to such
          accounts under the Company's  profit  sharing plan:  Mark C. Hall
          (0.491 Shares),  Richard E. Kessel (1.345 Shares), James F. Lowry
          (0.909 Shares), Eugene E. Murphy (1.345 Shares), Daniel J. Samela
          (1.140 Shares),  Steven G. Smith (1.345 Shares),  Martin S. Stone
          (0.292 Shares),  Stephen K. Swinson (1.298 Shares) and Stephen T.
          Ward (1.133 Shares).

          (u) Item 11 is hereby  amended by the  addition of the  following
language at the end of the table encaptioned  "Trigen Energy  Corporation -
SELECTED  CONSOLIDATED  FINANCIAL  AND  OPERATING  DATA" page 47 under "THE
TENDER OFFER - Certain Information  Concerning the Company" in the Offer to
Purchase:

               Grays Ferry  Cogeneration  Partnership.  As of December  31,
          1999, the Company had an investment of $34.3 million in the Grays
          Ferry Cogeneration Partnership (the Partnership"), representing a
          one-half  interest in the  Partnership,  which is  accounted  for
          under the equity method.  Cogen America  Schuylkill Inc. owns the
          other one-half interest in the Partnership. The Company derives a
          significant  portion  of its  income  from the  Partnership.  The
          summarized  financial  information  presented below represents an
          aggregation of 100% of the Partnership (in thousands).

<TABLE>
<CAPTION>
                    GRAYS FERRY COGENERATION PARTNERSHIP
                   SELECTED FINANCIAL AND OPERATING DATA
                              ($ IN THOUSANDS)

                                                     YEAR ENDED                 NINE MONTHS ENDED
                                                    DECEMBER 31,                  SEPTEMBER 30,
                                           ------------------------------ ---------------------------
                                                1998          1997(1)         1999           1998
                                           ------------- ---------------- ------------ --------------
Statement of Operations:                                                          (unaudited)

<S>                                          <C>                           <C>            <C>
   Revenues.............................     $  78,126                     $  62,358      $  58,128
   Operating expenses
     Fuel and consumables...............        34,926                        27,021         25,642
     Production and operating costs.....         4,348                         3,600          3,060
     Depreciation.......................         7,402                         5,674          5,164
     General and administrative.........         5,146                         5,412          3,615
                                             ---------                     ---------      ---------
   Total operating expenses.............        51,822                        41,707         37,481
                                             ---------                     ---------      ---------
   Operating income.....................        26,304                        20,651         20,647
   Other income (expense)
     Interest expense, net..............       (11,009)                       (5,756)        (8,001)
   Earnings before cumulative effect of a
     change in an accounting principle..
                                                15,295                        14,895         12,646
   Cumulative Effect of a Change in an
     Accounting Principle...............            --                          (357)            --
   Net Income...........................     $  15,295                     $  14,538      $  12,646
                                             =========                     =========      =========


<CAPTION>
                                                 AS OF DECEMBER 31,            AS OF SEPTEMBER 30,
                                           ------------------------------ ---------------------------
                                                1998          1997            1999           1998
                                           ------------- ---------------- ------------ --------------

<S>                                          <C>            <C>            <C>            <C>
Balance Sheet Data:
   Working capital (deficit)............     $(100,033)     $(115,430)     $ (88,500)     $(112,294)
   Property, plant and equipment, net...       143,895        144,328        138,342        144,099
   Current assets.......................        33,393         10,092         32,567         35,441
   Noncurrent assets....................         6,875          6,545         15,433         16,283
   Total assets.........................       184,163        160,965        186,342        195,823
   Current liabilities..................       133,426        125,522        121,067        147,735
   Noncurrent liabilities...............             -              -              -              -
   Partners' Capital....................        50,737         35,443         65,275         48,088
- -----------------------------
<FN>
(1)  Financial   information   regarding   the   operations   Grey's  Ferry
     Cogeneration  Partnership for the year ended December 31, 1997 are not
     available because Commercial operations did not commence until January
     9, 1998.
</FN>
</TABLE>

          Additional  financial  information relating to the Partnership is
     hereby incorporated by reference from the audited financial statements
     for the Partnership's  1998 and 1997 fiscal years set forth in Exhibit
     99 to the 1998 10-K.  The exhibit and the report may be inspected  at,
     and copies may be obtained from, the same places and in the manner set
     forth below under " - Available Information," below.

          (v) Item 11 is hereby  amended by  replacing  every  reference to
"Purchaser,  Parent,  Suez, CAC,  Societe Generale or, to the best of their
knowledge"  with  "the  Company,  Purchaser,  Parent,  Suez,  CAC,  Societe
Generale or, to the best of their  respective  knowledge"  in the sixth and
seventh  paragraph on page 48, the carryover  paragraph on pages 48 and 49,
and the first full  paragraph on page 49 under "THE TENDER  OFFER  -Certain
Information  Concerning Purchaser,  Parent, Suez, CAC and Societe Generale"
in the Offer to Purchase.

          (w) Item 11 is hereby amended by amending the fourth paragraph on
page 50 under "THE TENDER OFFER - Conditions  of the Offer" in the Offer to
Purchase by replacing the words "the  acceptance of such Shares for payment
or the payment therefor" in the fourth line of such language with the words
"the Expiration Date."

          (x) Item 11 is hereby amended by amending by adding the following
paragraph  after  the  carryover  paragraph  on pages 53 and 54 under  "THE
TENDER OFFER - Certain  Litigation  Matters;  Regulatory  Approvals" in the
Offer to Purchase:

               On March 16, 2000 another  reported class action styled Adam
          Z. Rice v. Trigen Energy  Corporation,  Suez  Lyonnaise Des Eaux,
          Elyo S. A., T Acquisition  Corporation,  Christine  Morin-Postel,
          Richard E. Kessel,  George Keane,  Patrick Buffet,  Oliver Degos,
          Philippe Brongiart,  Michel Bleitarch,  Dominique Magin, D'Oince,
          and Charles  Bayless,  Index No.  03668-00  (Supreme Court of the
          State of New York,  County of Westchester)  was filed. The action
          purports  to be  brought on behalf of a class  consisting  of all
          holders  of  the  Common  Stock  (except   defendants  and  their
          affiliates)  and alleges  that Parent has embarked on a course of
          conduct  designed to depress  the value of the  Shares,  that the
          consideration  to be received for the Shares is  inadequate,  and
          that the defendants  have breached their  fiduciary  duties.  The
          action seeks, among other things, damages.

          (y) Item 11 is hereby amended by adding the following language at
the end of Schedule I in the Offer to Purchase:

               4.   DIRECTORS AND OFFICERS OF THE COMPANY

          Set forth  below is the name,  present  principal  occupation  or
          employment  and  material  occupations,   positions,  offices  or
          employment for the past five years of each director and executive
          officer of Trigen Energy  Corporation.  The principal  address of
          the Company and, unless  indicated  below,  the current  business
          address for each  individual  listed  below is c/o Trigen  Energy
          Corporation,  1 Water  Street,  White  Plains,  New  York  10601.
          Telephone:  (914) 948-9150. Each such person is, unless indicated
          below, a citizen of the United  States.

                                       Present Principal Occupation or
Name and Current                       Employment; Material Positions Held
Business Address               Age     During the Past Five Years
- ---------------------------------------------------------------------------
Christine Morin-Postel          53   Chief   Executive  Officer  of Societe
                                     Generale de  Belgique  (1997-present).
                                     Director and  Non-executive  Chairman,
                                     Trigen       Energy        Corporation
                                     (2000-present);   Chairman  and  Chief
                                     Executive      Officer,      Compagnie
                                     Hypothecaire (1995-1998); Chairman and
                                     Chief  Executive  Officer,   credisuez
                                     (1995-1997);     Managing     Partner,
                                     Financiere Indosuez  (1995-1996).  Ms.
                                     Postel is a French citizen.

Patrick Buffet                  46   Executive    Vice    President,   Suez
                                     Lyonnaise  des  Eaux   (1998-present);
                                     Director,  Trigen  Energy  Corporation
                                     (1998-present);       Director      of
                                     International    Holdings,     Societe
                                     Generale de Belgique (1994-1998).  Mr.
                                     Buffet is a French citizen.

George F. Keane                 70   Director (1994-present), Trigen Energy
                                     Corporation,  Non-executive  Chairman,
                                     Trigen Energy Corporation (1994-2000);
                                     President    Emeritus    and    Senior
                                     Investment  Adviser,  The Common  Fund
                                     (1993-1996);  Board member,  Universal
                                     Stainless  &  Alloy  Products,  Global
                                     Pharmaceutical,      United      Water
                                     Resources,    The   Bramwell    Funds,
                                     Nicholas-Applegate   Investment  Trust
                                     and Northern Trust of Connecticut.

Philippe Brongniart             61   Member of  the Executive  Board,  Suez
                                     Lyonnaise  des  Eaux   (1997-present);
                                     Director,  Trigen  Energy  Corporation
                                     (1997-present);     Executive     Vice
                                     President,    Lyonnaise    des    Eaux
                                     (1993-1997).   Mr.   Brongniart  is  a
                                     French citizen.

Olivier Degos                   38   Treasurer and Secretary, T Acquisition
                                     Corp.  (2000-present);   International
                                     Director,     Elyo     (1999-present);
                                     Director,  Trigen  Energy  Corporation
                                     (1999-present);     Chief    Financial
                                     Officer,   Elyo  (1995-1998);   Deputy
                                     Chief  Financial  Officer;   The  SITA
                                     Group (1994-1995).

Richard E. Kessel               50   Director,  Trigen  Energy  Corporation
                                     (1994-present),     Chief    Executive
                                     Officer of Trigen  Energy  Corporation
                                     (January 2000-present); Executive Vice
                                     President and Chief Operating Officer,
                                     Trigen       Energy        Corporation
                                     (1993-January 2000).

Charles E. Bayless              56   Director,   Trigen  Energy Corporation
                                     (1994-present);  President  and  Chief
                                     Executive   Officer,   Illinova  Power
                                     Company   (1998-present);    Chairman,
                                     President and Chief Executive Officer,
                                     UniSource    Energy    (1998-present);
                                     Chairman,    Tuscon   Electric   Power
                                     Company (1992-1998).

Michel Bleitrach                54   President, T. Acquisition Corp. (2000-
                                     present); Chairman and Chief Executive
                                     Officer,      Elyo     (1993-present);
                                     Director,  Trigen  Energy  Corporation
                                     (1995-present).

Dominique Mangin d'Ouince       50   Director,  Trigen  Energy  Corporation
                                     (1995-present);     Executive     Vice
                                     President and Managing Director,  Suez
                                     Lyonnaise  des  Eaux   (1995-present);
                                     Managing      Director,       Business
                                     Development,  Suez  Lyonnaise des Eaux
                                     (1990-1997).  Mr. Mangin d'Ouince is a
                                     French citizen.

Jean M. Malahieude              61   Executive   Vice   President,   Trigen
                                     Energy   Corporation   (1997-Present);
                                     Vice    President,    Trigen    Energy
                                     Corporation   (1987-1997);   Executive
                                     Vice   President,   Cofreth   American
                                     Corporation    (1987-present).     Mr.
                                     Malahieude is a French citizen.

James F. Lowry                  61   President,        Trigen        Energy
                                     Corporation (1995-present); Principal,
                                     International      Ventures      Group
                                     (1993-1995).

Eugene E. Murphy                65   Vice  President and  General  Counsel,
                                     Trigen       Energy        Corporation
                                     (1986-present).    Secretary,   Trigen
                                     Energy Corporation (1998-present).

Daniel J. Samela                52   Controller, Trigen Energy  Corporation
                                     (1995-present);     Chief    Financial
                                     Officer,   Dealer  Division  of  Savin
                                     Corporation (1991-1995).

Stephen T. Ward                 57   Treasurer,  Trigen  Energy Corporation
                                     (1995-present);  Treasurer,  [TI Group
                                     Inc. (1988-1995).

Stephen K. Swinson              42   Vice    President,     Trigen   Energy
                                     Corporation (1998-present); President,
                                     Technology  Division,   Trigen  Energy
                                     Corporation (1997-present); President,
                                     Western    Region,    Trigen    Energy
                                     Corporation  (1996-1997);   President,
                                     Trigen-Colorado   Energy   Corporation
                                     (1995-1997);  President, Trigen-Kansas
                                     City Energy Corporation (1993-1997).

Steven G. Smith                 58   Vice     President,    Trigen   Energy
                                     Corporation (1998-present); President,
                                     Operations  Division,   Trigen  Energy
                                     Corporation (1997-present); President,
                                     Trigen-Philadelphia   Energy   Company
                                     (1990-present).

Martin S. Stone                 64   Vice   President  and Chief  Financial
                                     Officer,   Trigen  Energy  Corporation
                                     (1998-present);     Vice    President,
                                     Corporate    Secretary,    and   other
                                     positions,  Helmsley Enterprises, Inc.
                                     (1971-1997).

Benoit Ansart                   39   Vice    President,    Trigen    Energy
                                     Corporation  (1999-present);  Director
                                     of    Engineering,    Trigen    Energy
                                     Corporation (1993-1999).

Daniel Fiore                    54   Vice    President,    Trigen    Energy
                                     Corporation    (1999-present);    Vice
                                     President, Burns & Roe (1995-1999).

Mark Hall                       32   Vice    President,    Trigen    Energy
                                     Corporation  (1999-present);  Director
                                     of Government  Affairs,  Trigen Energy
                                     Corporation  (1997-1999);  Manager  of
                                     Environmental   Health   and   Safety,
                                     Trigen Energy Corporation (1995-1997).

          (z) Item 11 is hereby amended by amending the first  paragraph of
Schedule III in the Offer to Purchase by (i) replacing  every  reference to
"Suez,  Parent,  Purchaser,  the Company"  with "Suez,  Parent,  Purchaser,
Lazard Freres, CSFB or any of their respective officers and directors," and
(ii) adding the following language after the sixth sentence:

          Neither the  Company nor any of its  officers  and  directors  is
          making any representations as to the projections included in this
          Offer to  Purchase  other that they were  prepared  in good faith
          based on  assumptions  that were believed to be reasonable at the
          time of preparation.

ITEM 12.  Exhibits.

(a)(1)(i)         Offer to Purchase, dated February 28, 2000.*

(a)(1)(ii)        Letter of Transmittal.*

(a)(1)(iii)       Notice of Guaranteed Delivery.*

(a)(1)(iv)        Letter to Brokers, Dealers, Commercial Banks, Trust
                  Companies and Other Nominees.*

(a)(1)(v)         Notice to the Company 401k Plan Participants from
                  Fidelity Management Trust Company.*

(a)(1)(vi)        Solicitation/Recommendation Statement on Schedule 14D-9,
                  dated February 28, 2000 (incorporated by reference to the
                  Company's Schedule 14D-9 filed with the Commission on
                  February 28, 2000).*

(a)(2)            Letter to stockholders from Richard E. Kessel, President
                  and Chief Executive Officer of the Company.*

(a)(3)            Exhibit (a)(1)(i) is incorporated herein by reference.

(a)(4)            Not applicable.

(a)(5)(i)         Letter from Brokers, Dealers, Commercial Banks, Trust
                  Companies and Other Nominees to Clients.*

(a)(5)(ii)        Guidelines for Certification of Taxpayer Identification
                  Number on Substitute Form W-9.*

(a)(5)(iii)       Agreement and Plan of Merger dated as of January 19,
                  2000, among Elyo, T Acquisition Corp. and the Company.*

(a)(5)(iv)        Audited financial statements for the Company's 1998 and
                  1997 fiscal years, beginning on page F-1 of the Company's
                  Annual Report on Form 10-K for the fiscal year ended
                  December 31, 1998 (incorporated by reference to the
                  Company's Annual Report on Form 10-K filed with the
                  Commission on March 31, 1999).*

(a)(5)(v)         Pages 1 through 8, inclusive, of the Company's Quarterly
                  Report on Form 10-Q for the fiscal quarter ended
                  September 30, 1999 (incorporated by reference to the
                  Company's Quarterly Report on Form 10-Q filed with the
                  Commission on November 12, 1999).*

(a)(5)(vi)        Audited financial statements for Grays Ferry Cogeneration
                  Partnership 1998 and 1997 fiscal years, set forth on
                  Exhibit 99 to the Company's Annual Report on Form 10-K
                  for the fiscal year ended December 31, 1998 (incorporated
                  by reference to the Company's Annual Report on Form 10-K
                  filed with the Commission on March 31, 1999).*

(a)(5)(vii)       Joint Press Release, dated January 19, 2000.*

(a)(5)(viii)      Joint Press Release, dated February 28, 2000.*

(a)(5)(ix)        Joint Press Release, dated March 17, 2000.

(b)               Not applicable.

(c)(i)            Summary Presentation prepared for Parent by Lazard Freres
                  & Co., LLC, dated January 19, 2000.*

(c)(ii)           Written Presentation prepared for the Special Committee
                  by Credit Suisse First Boston Corporation, dated January
                  19, 2000.*

(c)(iii)          Opinion of Credit Suisse First Boston Corporation, dated
                  January 19, 2000 (incorporated by reference from Annex A
                  of the Solicitation/Recommendation Statement on Schedule
                  14D-9 of the Company, dated February 28, 2000).*

(d)(i)            Tender and Voting Agreement dated as of January 19, 2000,
                  among Elyo, T Acquisition Corp. and the Stockholders.*

(d)(ii)           Letter Agreement between Thomas R. Casten and Elyo, dated
                  January 19, 2000.*

(d)(iii)          Separation Agreement and Release dated as of January 19,
                  2000, between Trigen Energy Corporation and Thomas R.
                  Casten.*

(f)               Section 262 of the Delaware General Corporation Law
                  (included as Schedule II to the Offer to Purchase filed
                  herewith as Exhibit (a)(1)(i)).*

(g)               Not applicable.

(h)               Not applicable.

(i)(i)            Power of Attorney, dated October 27, 1998.*

(i)(ii)           Power of Attorney, dated October 27, 1998 (English
                  translation).

- -------------------
*  Previously filed
<PAGE>
                                 SIGNATURE

     After  due  inquiry  and to the best of my  knowledge  and  belief,  I
certify that the information set forth in this statement is true,  complete
and correct.

                                    T ACQUISITION CORP.


                                    By: /s/ Michel Bleitrach
                                        ---------------------------------
                                        Name:   Michel Bleitrach
                                        Title:  President


                                    ELYO


                                    By: /s/ Michel Bleitrach
                                        ---------------------------------
                                        Name:   Michel Bleitrach
                                        Title:  Chief Executive Officer


                                    SUEZ LYONNAISE DES EAUX


                                    By: /s/  M. Patrice Herbet
                                        ---------------------------------
                                        Name:   M. Patrice Herbet*
                                        Title:  Authorized Representative


                                    TRIGEN ENERGY CORPORATION


                                    By: /s/ Eugene E. Murphy
                                        ---------------------------------
                                        Name:  Eugene E. Murphy
                                        Title: Vice President, General
                                               Counsel and Secretary

Dated:  March 17, 2000



- -----------------------
*    A Power of Attorney authorizing M. Patrice Herbet to sign on behalf of
     Suez Lyonnaise des Eaux is filed herewith as Exhibit (i).
<PAGE>
                               EXHIBIT INDEX

   EXHIBIT
   NUMBER         TITLE
- ------------      -----

(a)(1)(i)         Offer to Purchase, dated February 28, 2000.*

(a)(1)(ii)        Letter of Transmittal.*

(a)(1)(iii)       Notice of Guaranteed Delivery.*

(a)(1)(iv)        Letter to Brokers, Dealers, Commercial Banks, Trust
                  Companies and Other Nominees.*

(a)(1)(v)         Notice to the Company 401k Plan Participants from
                  Fidelity Management Trust Company.*

 (a)(1)(vi)       Solicitation/Recommendation Statement on Schedule 14D-9,
                  dated February 28, 2000 (incorporated by reference to the
                  Company's Schedule 14D-9 filed with the Commission on
                  February 28, 2000).

(a)(2)            Letter to stockholders from Richard E. Kessel, President
                  and Chief Executive Officer of the Company.*

(a)(3)            Exhibit (a)(1)(i) is incorporated herein by reference.

(a)(4)            Not applicable.

(a)(5)(i)         Letter from Brokers, Dealers, Commercial Banks, Trust
                  Companies and Other Nominees to Clients.*

(a)(5)(ii)        Guidelines for Certification of Taxpayer Identification
                  Number on Substitute Form W-9.*

(a)(5)(iii)       Agreement and Plan of Merger dated as of January 19,
                  2000, among Elyo, T Acquisition Corp. and the Company.*

(a)(5)(iv)        Audited financial statements for the Company's 1998 and
                  1997 fiscal years, beginning on page F-1 of the Company's
                  Annual Report on Form 10-K for the fiscal year ended
                  December 31, 1998 (incorporated by reference to the
                  Company's Annual Report on Form 10-K filed with the
                  Commission on March 31, 1999).

(a)(5)(v)         Pages 1 through 8, inclusive, of the Company's Quarterly
                  Report on Form 10-Q for the fiscal quarter ended
                  September 30, 1999 (incorporated by reference to the
                  Company's Quarterly Report on Form 10-Q filed with the
                  Commission on November 12, 1999).

(a)(5)(vi)        Audited financial statements for Grays Ferry Cogeneration
                  Partnership 1998 and 1997 fiscal years, set forth on
                  Exhibit 99 to the Company's Annual Report on Form 10-K
                  for the fiscal year ended December 31, 1998 (incorporated
                  by reference to the Company's Annual Report on Form 10-K
                  filed with the Commission on March 31, 1999).

(a)(5)(vii)       Joint Press Release, dated January 19, 2000.*

(a)(5)(viii)      Joint Press Release, dated February 28, 2000.*

(a)(5)(ix)        Joint Press Release, dated March 17, 2000.

(b)               Not applicable.

(c)(i)            Summary Presentation prepared for Parent by Lazard Freres
                  & Co., LLC, dated January 19, 2000.*

(c)(ii)           Written Presentation prepared for the Special Committee
                  by Credit Suisse First Boston Corporation, dated January
                  19, 2000.*

(c)(iii)          Opinion of Credit Suisse First Boston Corporation, dated
                  January 19, 2000 (incorporated by reference from Annex A
                  of the Solicitation/Recommendation Statement on Schedule
                  14D-9 of the Company, dated February 28, 2000).*

(d)(i)            Tender and Voting Agreement dated as of January 19, 2000,
                  among Elyo, T Acquisition Corp. and the Stockholders.*

(d)(ii)           Letter Agreement between Thomas R. Casten and Elyo, dated
                  January 19, 2000.*

(d)(iii)          Separation Agreement and Release dated as of January 19,
                  2000, between Trigen Energy Corporation and Thomas R.
                  Casten.*

(f)               Section 262 of the Delaware General Corporation Law
                  (included as Schedule II to the Offer to Purchase filed
                  herewith as Exhibit (a)(1)(i)).*

(g)               Not applicable.

(h)               Not applicable.

(i)(i)            Power of Attorney, dated October 27, 1998.*

(i)(ii)           Power of Attorney, dated October 27, 1998 (English
                  translation).


- -------------------
*  Previously filed

                                                        EXHIBIT 99(a)(5)(ix)

March 17, 2000

Elyo: Acquisition of Trigen Energy Corporation

BIDDERS ANNOUNCE AMENDMENT OF TENDER OFFER MATERIALS FOR SHARES OF TRIGEN

WHITE PLAINS, N.Y. and NANTERRE, France, March 17 /PRNewswire/ -- Trigen
Energy Corporation (NYSE: TGN) and ELYO, an energy subsidiary of the Suez
Lyonnaise des Eaux Group, jointly announced today that, in response to
comments made by the staff of the Securities and Exchange Commission, they
have supplemented certain disclosures made in connection with the
previously announced offer by T Acquisition Corp., an indirect, wholly
owned subsidiary of ELYO, to purchase any and all of the outstanding shares
of Trigen that ELYO does not already own for $23.50 a share in cash. All
terms of the tender offer remain unchanged from those disclosed in the
tender offer materials that were mailed to Trigen's shareholders on
February 28, 2000. The supplemental information has been filed with the
Securities and Exchange Commission, and is available to any Trigen
shareholder, free of charge, by contacting the Information Agent, Morrow &
Co., Inc. at (800) 566-9061.

Trigen is a leading developer, owner and operator of industrial,
commercial and institutional district energy and combined heat and power
(CHP) systems in North America. The company serves more than 1,500
customers with energy produced at 49 plants in 20 states, Canada and
Mexico.

CONTACT: Susan Odiseos, Director of Corporate Communications of Trigen
Energy Corporation, 914-286-6628; or Gilles Alligner, Director of
Communications of ELYO, +1-33-1-41-20-1293; or Jeffrey Zack of Morgen Walke
Associates, Inc, 212-850-5643.

                                                          Exhibit 99(i)(ii)

                    [SUEZ LYONNAISE DES EAUX LETTERHEAD]

                             Power of Attorney

     The undersigned, Gerard Mestrallet, Chairman of the Board, by
resolutions of the Board of Directors dated June 30, 1997 and October 19,
1998, does hereby grant, with power of delegation, to

     Mr. Philippe de Margeril, Secretary,

the power to:

     o    sign any present or future correspondence of the Company;

     o    contract for insurance, pay insurance premiums, and accept and
          receive compensation;

     o    represent the Company in all trade associations or related groups
          in which the Company participates or of which the Company is a
          member;

     o    file all applications for the registration of all trademarks,
          patents and other intellectual property rights, enter into
          licensing arrangements, with the authority to delegate this power
          to the Company's attorneys or other advisors;

     o    purchase supplies and furniture in furtherance of the Company's
          objectives;

     o    enter into and cancel bailments and leases for real and personal
          property;

     o    subscribe for, acquire or sell any capital stock or obligation of
          any entity;

     o    open, in the Company's name, bank accounts with any private or
          public banking organization;

     o    make deposits, withdrawals and transfers of funds on behalf of
          the Company;

     o    sign all checks and other negotiable instruments in the name and
          on behalf of the Company;

     o    establish and sign statements of account and promissory notes or
          similar obligations which are or could be owed to the Company
          from any source;

     o    collect on any amounts that may be due to the Company from any
          source, and provide receipt thereof;

     o    pay all amounts due by the Company and obtain receipt thereof;

     o    take any action necessary to collect on amounts due to the
          Company in the event of default or non-payment;

     o    take legal action on behalf of the Company against debtors of the
          Company, respond to requests for information, and settle any
          disputes;

     o    represent the Company in judicial proceedings as either plaintiff
          or defendant, agree to venue, participate in motions, and defend
          the Company before any competent court, sign and file complaints
          or responsive pleadings, propose and accept any settlement
          offers, satisfy all judgments against the Company, waive or drop
          claims, and participate in appeals;

     o    make all appropriate declarations to taxing authorities, pay
          taxes, petition or appeal any decision relating to tax exemptions
          or returns, defend the Company before any competent tax court or
          administrative body, sign and file complaints or responsive
          pleadings, propose and accept any settlement offers, satisfy all
          judgments against the Company, waive or drop claims, and
          participate in appeals;

     o    take all action necessary for the Company to be and remain in
          good standing under the laws of all jurisdictions in which the
          Company operates or does business;

     o    contract on behalf of the Company; and

     o    be an officer of the Company with respect to the Company's
          operations in France and abroad.

     And to take all action necessary to effectuate the above-listed
powers.

     This power of attorney hereby voids and supercedes the power of
attorney dated July 1, 1997 relating to the subject matter hereof.



                                     /s/ Gerard Mestrallet
                                     ---------------------
                                     Gerard Mestrallet
                                     Nanterre, France, October 27, 1998

<PAGE>


                    [SUEZ LYONNAISE DES EAUX LETTERHEAD]

                             Power of Attorney

     The undersigned, Philippe de Margerie, Secretary, by the power of
authority dated October 27, 1998 by Gerard Mestrallet, does hereby grant,

     Mr. Patrice Herbet, French and International General Counsel

the power to:

     o    sign any present or future correspondence of the Company;

     o    file all applications for the registration of all trademarks,
          patents and other intellectual property rights, enter into
          licensing arrangements, with the authority to delegate this power
          to the Company's attorneys or other advisors;

     o    establish and sign statements of account and promissory notes or
          similar obligations which are or could be owed to the Company
          from any source;

     o    take any action necessary to collect on amounts due to the
          Company in the event of default or non-payment;

     o    take legal action on behalf of the Company against debtors of the
          Company, respond to requests for information, and settle any
          disputes;

     o    represent the Company in judicial proceedings as either plaintiff
          or defendant, agree to venue, participate in motions, and defend
          the Company before any competent court, sign and file complaints
          or responsive pleadings, propose and accept any settlement
          offers, satisfy all judgments against the Company, waive or drop
          claims, and participate in appeals;

     o    take all action necessary for the Company to be and remain in
          good standing under the laws of all jurisdictions in which the
          Company operates or does business;

     o    negotiate and contract on behalf of the Company; and

     o    be an officer of the Company with respect to operations in France
          and abroad.

     And to take all action necessary to effectuate the above-listed
powers.



                               s/ Philippe de Margerie
                               -----------------------
                               Philippe de Margerie
                               Nanterre, France, October 27, 1998



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