Exhibit 4.7

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                          FIRST SUPPLEMENTAL INDENTURE

                           Dated as of March 13, 2002

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                                 SUPPLEMENTAL TO
                      INDENTURE DATED AS OF APRIL 16, 2001

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                                 PSEG Power LLC
                                PSEG Nuclear LLC
                                 PSEG Fossil LLC
                       PSEG Energy Resources and Trade LLC

                                       To

                          The Bank of New York, Trustee

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     SUPPLEMENTAL INDENTURE, dated as of March 13, 2002, among PSEG POWER LLC, a
Delaware limited liability company  (hereinafter  called the "Company"),  having
its principal  office at 80 Park Plaza,  Newark,  NJ 07102,  PSEG NUCLEAR LLC, a
Delaware limited liability company  (hereinafter  called "Nuclear"),  having its
principal office at 80 Park Plaza, Newark, NJ 07102, PSEG FOSSIL LLC, a Delaware
limited liability company  (hereinafter  called "Fossil"),  having its principal
office at 80 Park Plaza,  Newark, NJ 07102, PSEG ENERGY RESOURCES & TRADE LLC, a
Delaware  limited  liability  company  (hereinafter  called "ER&T"),  having its
principal office at 80 Park Plaza, Newark, NJ 07102,  (Nuclear,  Fossil and ER&T
are sometimes  hereinafter  referred to as the "Subsidiary  Guarantors") and THE
BANK OF NEW YORK, a New York banking corporation, as Trustee (hereinafter called
the "Trustee"),  having a Corporate Trust Office at 101 Barclay Street, Floor 21
West,   New  York,   New  York  10286,   Attention:   Corporate   Trust  Trustee
Administration.


     WHEREAS,  on April 16,  2001,  the  Company and the  Subsidiary  Guarantors
executed and delivered to the Trustee an indenture providing for the issuance of
the Company's senior debt securities (the "Indenture"); and


     WHEREAS,  Subsection 901(9) of the Indenture provides that the Company, the
Subsidiary Guarantors and the Trustee may, without the consent of the holders of
any outstanding senior debt securities,  enter into an indenture supplemental to
the  Indenture  in order to cure any  ambiguity,  to correct or  supplement  any
provision  therein  which  may be  defective  or  inconsistent  with  any  other
provision  therein,  or to make any other  provisions with respect to matters or
questions  arising under the Indenture which shall not be inconsistent  with the
provisions thereof; provided that such provisions shall not adversely affect the
interests of the holders of any  outstanding  series of debt  securities  in any
material respect; and


     WHEREAS,  the  Company has  requested  the Trustee to enter into this First
Supplemental  Indenture to clarify a potential  ambiguity in the  application of
Section 1008(b) of the Indenture to certain pass-through financing activities of
special purpose subsidiaries of the Company; and


     WHEREAS,  the execution and delivery of this First  Supplemental  Indenture
have been duly authorized by the Board of Directors of the Company; and


     WHEREAS,  the Company  represents that execution of this First Supplemental
Indenture  shall not  adversely  affect  the  interests  of the  holders  of any
outstanding  series of senior debt securities  issued under the Indenture in any
material respect; and

     WHEREAS,  the Company  represents  that all things  necessary  to make this
First Supplemental  Indenture a valid and binding agreement  supplemental to the
Indenture have been done and performed:


     NOW,  THEREFORE,  THIS FIRST SUPPLEMENTAL  INDENTURE  WITNESSETH that it is
hereby agreed between and among the Company,  the Subsidiary  Guarantors and the
Trustee as follows:


     SECTION 1. That the following  shall be substituted  for Section 1008(b) of
the Indenture in its entirety:

          Subsidiaries Other Than Restricted Subsidiaries

          Except for parental guaranties of debt service reserves, surety bonds,
          equity guarantees, performance bonds and bid bonds entered into in the
          ordinary course of business  aggregating at any one time not more than
          $100 million,  the Company shall not permit any Subsidiary that is not
          a  Restricted  Subsidiary  to,  directly  or  indirectly,   Incur  any
          Obligations (including, without limitation, Acquired Obligations) that
          are recourse to the Company or any Restricted Subsidiary. For purposes
          of this  Section  1008(b),  preferred  securities  issued  by  special
          purpose subsidiaries of the Company shall not be deemed to be recourse
          to the Company.


     SECTION 2. That all other  provisions  of the  Indenture  are  confirmed in
their entirety.

     SECTION 3. The recitals  contained  herein shall be taken as the statements
of the Company or the Subsidiary Guarantors, as the case may be, and the Trustee
shall not assume any responsibility for their correctness.  The Trustee makes no
representations  as to the validity or  sufficiency  of this First  Supplemental
Indenture.

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     IN WITNESS WHEREOF,  the parties hereto have caused this First Supplemental
Indenture to be duly executed as of the day and year first above written.


                   PSEG POWER LLC

                   By: MORTON A. PLAWNER
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                       Name: Morton A. Plawner
                       Title: Vice President and Treasurer


                   PSEG ENERGY RESOURCES & TRADE LLC

                   By: MORTON A. PLAWNER
                       --------------------------------------------------
                       Name: Morton A. Plawner
                       Title: Vice President and Treasurer


                   PSEG FOSSIL LLC

                   By: MORTON A. PLAWNER
                       --------------------------------------------------
                       Name: Morton A. Plawner
                       Title: Vice President and Treasurer


                   PSEG NUCLEAR LLC

                   By: MORTON A. PLAWNER
                       --------------------------------------------------
                       Name: Morton A. Plawner
                       Title: Vice President and Treasurer


                   THE BANK OF NEW YORK,
                            as Trustee


                   By: --------------------------------------------------
                       Name:
                       Title: