AMENDMENT TO TRANSACTION DOCUMENTS

     This Amendment to Transaction Documents (the "Agreement") is made as 
of the 31st day of May, 1997, between and among GSF Energy, L.L.C., a 
Delaware limited liability company and successor by merger to the interest 
of GSF Energy, Inc. ("GSF"), Brea Power Partners, L.P., a Delaware limited 
partnership (the "Partnership"), and Ridgewood Electric Power Trust I, a 
Delaware business trust ("Ridgewood") with respect to the following 
Recitals: 

     WHEREAS, the Partnership was formed as a limited partnership under the 
Delaware Revised Uniform Limited Partnership Act pursuant to a Certificate 
of Limited Partnership of the Partnership, as filed in the office of the 
Secretary of State of the State of Delaware on October 12, 1994, and an 
Agreement of Limited Partnership of the Partnership dated as of October 12, 
1994 (the "Partnership Agreement") for the purpose of acquiring from GSF an 
approximately 5 MW landfill gas fired electrical generating facility 
located in the space above the Olinda/Olinda Alpha sanitary landfill in 
Orange County, California (the "Facility"); 

     WHEREAS, the original partners in the Partnership were Brea Power (I), 
Inc., a Delaware corporation and wholly-owned subsidiary of GSF ("Brea"), 
as sole general partner, and GSF and Ridgewood Electric Power Trust I, a 
Delaware business trust ("Ridgewood"), as limited partners; 

     WHEREAS, in furtherance of the purposes for which the Partnership was 
organized, the Partnership and GSF and, in certain cases third parties 
entered into the following agreements:  

     (i)  a certain Contribution Agreement dated as of November 29, 1994 by 
and between GSF and the Partnership, pursuant to which GSF agreed to 
contribute certain assets to the Partnership (the "Contribution 
Agreement");

     (ii)  a certain Bill of Sale dated as of November 29, 1994 by and 
between GSF and the Partnership pursuant to which GSF assigned certain 
property to the Partnership (the "Bill of Sale");

     (iii)  a certain Assignment and Assumption Agreement dated as of 
November 19, 1994 between GSF and the Partnership pursuant to which the 
Parallel Generation Agreement (the "Power Contract") dated as of December 
28, 1982 between GSF and Southern California Edison Company ("SCE") was 
assigned to the Partnership (the "Power Contract Assignment");

     (iv)  a certain Consent to Assignment dated as of November 29, 1994 
between and among GSF, the Partnership and SCE pursuant to which SCE 
consented to the Power Contract Assignment (the "SCE Consent");



     (v)  a certain Partial Assignment and Assumption Agreement dated as of 
November 29, 1994 between GSF and the Partnership (the "Gas Lease 
Assignment") pursuant to which GSF assigned to the Partnership, and the 
Partnership assumed, certain rights and obligations of GSF under a certain 
Amended and Restated Gas Lease Agreement dated as of December 14, 1993 by 
and between Orange County, California ("Orange County") and GSF (the "Gas 
Lease");

     (vi)  a certain Modification No. 1 to the Gas Lease dated November 29, 
1994 between GSF, the Partnership and Orange County ("Modification No. 1") 
pursuant to which Orange County consented to the Gas Lease Assignment;

     (vii)  a certain Gas Sale and Purchase Agreement dated as of November 
29, 1994 by and between GSF and the Partnership (the "Gas Sale Agreement") 
pursuant to which GSF agrees to sell and the Partnership agrees to purchase 
gas to be used by the Facility to generate electricity; and 

     (viii)  a certain Operating, Maintenance and Administrative Services 
Agreement dated as of November 29, 1994 by and between GSF and the 
Partnership (the "O&M Agreement");

     WHEREAS, in connection with the formation of the Partnership, GSF and 
Ridgewood entered into a certain Support Agreement dated as of November 29, 
1994 pursuant to which GSF and Ridgewood undertook certain obligations with 
respect to their respective interests in the Partnership (the "Support 
Agreement"); 

     WHEREAS, the agreements and documents referred to in clauses (i) 
through (viii) of the third WHEREAS clause of this Agreement and the 
Support Agreement are hereinafter collectively referred to as the 
"Transaction Documents"; 

     WHEREAS, pursuant to a certain Acquisition Agreement dated as of May 
31, 1997 (the "Acquisition Agreement") by and between GSF and Olinda, 
L.L.C., a Delaware limited liability company which is affiliated with 
Ridgewood ("Olinda"), GSF has contracted to sell the stock of Brea and the 
limited partnership interest in the Partnership to Olinda; 

     WHEREAS, the execution and delivery of this Agreement is a condition 
precedent to Olinda's obligations to close the transactions contemplated by 
the Acquisition Agreement;

     WHEREAS, the parties are entering into this Agreement in order to 
induce Olinda to close the transactions contemplated by the Acquisition 
Agreement.

     NOW therefore, the parties agree as follows:



1.   Contribution Agreement.  There are no amendments or modifications of 
the Contribution Agreement and the Contribution Agreement continues in full 
force and effect as written.

2.   Bill of Sale.  There are no amendments or modifications of the Bill of 
Sale, and the Bill of Sale continues in effect as written; subject, 
however, to the reconveyance by the Partnership to GSF of certain assets 
described in the Bill of Sale pursuant to a certain Assignment and 
Assumption of Contracts executed by the Partnership and GSF in connection 
with the Acquisition Agreement.  

3.   Power Contract Assignment.  There are no amendments or modifications 
of the Power Contract Assignment, and the Power Contract Assignment 
continues in full force and effect as written.

4.   SCE Consent.  There are no amendments or modifications of the SCE 
Consent, and the SCE Consent continues in full force and effect as written.

5.   Gas Lease Assignment.  There are no amendments or modifications of the 
Gas Lease Assignment, and the Gas Lease Assignment continues in full force 
and effect as written.

6.   Modification No. 1.  There are no amendments or modifications of the 
Modification No. 1, and Modification No. 1 continues in full force and 
effect as written.

7.   Gas Sale Agreement.

     (a)  Article I Term is hereby amended by deleting Section 1.01 in its 
entirety and by substituting a new Section 1.01 in lieu thereof as follows:  

               "Section 1.01.  This Agreement shall be effective from the 
Effective Date and, unless terminated earlier as provided herein, shall 
continue and remain in full force and effect until the later to occur of 
(i) December 31, 2004 or (ii) the expiration of the stated term of the 
Power Contract."  

     (b)  Article II - Certain Definitions is hereby amended by deleting 
the phrase "receiving and processing deliveries of Gas" from the second and 
third lines of the definition of Buyer's Facility set forth in Section 
2.01(b). 

     (c)  Article III - Purchase and Sale is hereby amended by deleting the 
second paragraph thereof in its entirety. 

     (d)  Article IV - Delivery is hereby amended by deleting Section 4.01 
in its entirety and inserting a new Section 4.01 in lieu thereof as 
follows:  



               "Section 4.01.  All Gas delivered by Seller to Buyer 
pursuant to this Agreement shall be delivered at the point which is 
immediately upstream of the 3" - Flange Stub with Blind Flange on the pipe 
labeled 3" - P-135A-1A and which is shown as the "Delivery Point" on the 
engineering drawing attached hereto as Schedule 1 (the "Delivery Point").  
Delivery of Gas hereunder shall commence upon the Effective Date."  

          Further, any other references to "Delivery Point" which are set 
forth on the engineering drawings attached to the Gas Sale Agreement as 
Exhibit A are deleted in their entirety.  

     (e)  Article V - Operation and Maintenance is hereby amended by 
deleting the words "GSF Energy Inc." in the third line of Section 5.02 and 
inserting the words "Ridgewood Power Management Corporation" in lieu 
thereof. 

     (f)  Article V - Operations and Maintenance is hereby amended by 
adding a new Section 5.04 as follows: 

               Section 5.04.  In the event that Seller's monthly Capacity 
Factor falls below 85%, the Seller agrees that Buyer may take or may cause 
the Seller to take such steps as Buyer may reasonably conclude are 
necessary or appropriate to restore and maintain the ability of Seller's 
Facility to provide a Monthly Capacity Factor of 100%.  Seller agrees to 
cooperate with Buyer in such manner as Buyer requests in order to 
facilitate the improvements in Seller's Facility contemplated by this 
Section 5.04, and Seller agrees that to the extent that Buyer incurs any 
out-of-pocket costs in connection with any such improvements, then Buyer 
may offset any such costs against amounts otherwise due Seller hereunder."  

     (g)  Article VI - Price is hereby amended by deleting the second 
paragraph of Section 6.01 in its entirety and by adding the following 
sentence at the end of the first paragraph of Section 6.01:  

               "In addition, from and after January 1, 1997 the Buyer shall 
pay the Seller an additional amount for purchase of gas equal to $12,500 
per month.  Commencing on January 1, 1998 and for each subsequent calendar 
year, such monthly payment shall be escalated at 3.7% over the amount paid 
in the corresponding month in the preceding calendar year."

     (h)  Article X - Default, Termination and Liability is hereby amended 
by deleting Sections 10.01, 10.02, 10.03, 10.04 and 10.05 in their 
entirety.  



     (i)  Article XII - Miscellaneous is hereby amended by (i) deleting 
clause (i) of Section 12.01 in its entirety, and (ii) substituting the 
following addresses for the Buyer and Seller in Section 12.04(a): 

          To Buyer: Brea Power Partners, L.P.
                    c/o Ridgewood Power Management Corporation
                    947 Linwood Avenue
                    Ridgewood, New Jersey  07450
                    Phone:    (201) 447-9000
                    Facsimile:(201) 447-0474

          To Seller:GSF Energy, L.L.C. 
                    3321 Bee Caves Road
                    Suite 300      
                    Austin, TX  78746
                    Attn:  President
                    Phone:    (512) 347-1441
                    Facsimile:(512) 347-1551

     (j)  The Gas Sale Agreement, as amended and modified by the foregoing 
provisions of this Paragraph 7, continues in full force and effect. 

8.   The O&M Agreement is hereby terminated and is of no further force and 
effect (except to the extent specifically provided therein). 

9.   The Support Agreement is hereby amended as follows:  

     (a)  Section 1 - Defined Terms shall be amended by deleting the term 
"Ridgewood Interest Purchase Price" in its entirety and substituting a new 
definition of, "Ridgewood Damage Amount." as follows: 

           "Ridgewood Damage Amount shall have the meaning given such term 
in Section 3(b) hereof."  

     (b)  Subsection 2(a)(iii) is hereby amended by deleting such 
subsection in its entirety and substituting the following in lieu thereof:  

           "(iii) GSF shall pay liquidated damages to Ridgewood in 
accordance with the provisions of Section 3 hereof." 

     (c)  Section 3 is deleted in its entirety and the following 
substituted in lieu thereof: 
          

           "Ridgewood Damage Amount



               (a)  Ridgewood may require GSF to pay damages to Ridgewood 
in an amount equal to the Ridgewood Damage Amount calculated in accordance 
with Section 3(b) hereof in the following situations 
                    
                    (i)  GSF has notified Ridgewood of its election to 
terminate its Dissolution Payment obligation in accordance with Section 
2(c) hereof; or 

                    (ii) The Gas Supplier has fully expended the Maximum 
Liability Cap. 

                    Payment of the Ridgewood Damage Amount must be made 
within 30 days after the occurrence of either of such events. 

               (b)  The Ridgewood Damage Amount shall be an amount 
necessary to make the sum of the discounted present values, discounted to 
November 29, 1994, of the following three items equal to Three Million One 
Hundred Thousand Dollars ($3,100,000):  

                    (i)  The Ridgewood Damage Amount, 

                    (ii) Distributions made to Ridgewood (including 
successors and assigns in accordance with Article V of the Partnership 
Agreement); and 

                    (iii)Distribution payments made to Ridgewood (if any). 

                    For purposes of calculating the Ridgewood Damage 
Amount, the applicable discount rate shall equal 1.17% per month, and cash 
payment shall be deemed to have occurred at the end of the month in which 
received."

               (c)  Section 4 - GSF Call Option is hereby amended by 
deleting such section in its entirety. 

               (d)  Section 6 - Notice of Claims continues in full force 
and effect as written notwithstanding the termination of the Operating 
Agreement upon the closing of the Acquisition Agreement. 

               (e)  Section 7 - Notices is hereby amended by deleting the 
address for GSF and substituting the following address in lieu thereof: 




                    To GSF:   GSF Energy, L.L.C.
                              3321 Bee Caves Road, Suite 300
                              Austin, Texas  78746
                              Attn:  President 
                              Tel: (512) 347-1441
                              Fax: (512) 347-1551

               (f)  The Support Agreement, as amended and modified by the 
foregoing provision of this Paragraph 9, continues in full force and 
effect. 

10.  The amendments, modifications, and termination of the Transaction 
Documents described in the foregoing provision of this Agreement shall 
become effective on the closing of the Acquisition Agreement. 

11.  The provisions hereof shall be binding upon and inure to the benefit 
of the parties hereto and their respective successors and assigns.  This 
Agreement may be executed in two or more counterparts, each of which shall 
be deemed an original but all of which together shall constitute one and 
the same instrument.  This Agreement shall be governed by and construed in 
accordance with the laws of the State of New York, without giving effect to 
any choice or conflict of law provision or rule that would cause the 
application of the laws of any other jurisdiction.

In witness whereof, the parties have executed this Agreement as of the date 
first above written. 

                         GSF ENERGY, L.L.C. 
                         By: Ecogas Corporation, as Manager

                         By: /s/ Jerrel Branson             
                         Name:  Jerrel Branson              
                         Title:  President             




                         BREA POWER PARTNERS, L.P. 
                         By BREA POWER (I), INC. - General Partner
                         (with respect to Transaction Documents other than 
                          the Support Agreement)


                         By:  /s/ Jerrel Branson            
                         Name:  Jerrel Branson              
                         Title:  President             

                         RIDGEWOOD ELECTRIC POWER TRUST I
                         By RIDGEWOOD POWER CORPORATION
                         (with respect to the Support Agreement only)


                         By:  /s/ Mary Louise Olin          
                         Name:  Mary Louise Olin            
                         Title:  Vice President        


Each of the undersigned, in its capacity as a limited partner of Brea Power 
Partners, L.P. hereby confirms that it approves and ratifies the execution 
of this Agreement by Brea Power (I) Inc. as general partner, acting on 
behalf of the Brea Power Partners, L.P. 

                         GSF ENERGY, L.L.C.


                         By:  /s/ Jerrel Branson            
                         Name:  Jerrel Branson              
                         Title:  President             


                         Ridgewood Electric Power Trust I 
                         By:  Ridgewood Power Corporation, 
                              its Managing Shareholder


                         By:  /s/ Mary Louise Olin          
                         Name:  Mary Louise Olin            
                         Title:  Vice President