Exhibit 10.22.4


                      TWENTY-NINTH AGREEMENT AMENDING
                     NEW ENGLAND POWER POOL AGREEMENT



     THIS AGREEMENT, dated as of the 1st day of May, 1993 is entered into
by the signatories hereto for the amendment by them of the New England
Power Pool Agreement dated as of September 1, 1971 (the "NEPOOL
Agreement"), as previously amended by twenty-eight (28) amendments, the
most recent of which was dated as of September 15, 1992.  WHEREAS,
Participant generation resources, other than hydroelectric units, whose
annual hours of operation are restricted by regulatory requirements,
contract terms or engineering or operating constraints, may require
treatment different from that otherwise provided in the NEPOOL Agreement
for Capability Responsibility and energy billing purposes; and 

     WHEREAS, the signatory Participants have determined to amend the
NEPOOL Agreement in the manner specified below in order to provide for a
modified Capability Responsibility and energy billing treatment for
restricted generation resources.  

     NOW THEREFORE, the signatories hereby agree as follows:  

                                 SECTION I
                            TEXT OF AMENDMENTS

     A. Amendment of Section 9.2(b)(2)

     Section 9.2(b)(2) of the NEPOOL Agreement is amended by inserting the
following additional provisions immediately following the present final
paragraph of Section 9.2(b)(2):

          The New Unit Adjustment Factor for any Restricted Unit for which  
          proposed plans were submitted subsequent to November 1, 1990 for  
          review pursuant to Section 10.4 (or, in the case of a unit with a 
          rated capacity of less than 5MW, for which notification was first 
          given to NEPOOL subsequent to November 1, 1990) and for the       
          Peabody Municipal Light Plant's Waters River #2 unit shall be     
          determined in accordance with the formula previously specified in 
          this Section 9.2(b)(2), modified as follows: 
          

          n =  K1(c-C) + K2(f-F) + K3(m-M) + K4(d-D) + 
               K5(f-F)c2 + K6(2500-a)


          The symbols used in the above formula, as modified, shall have    
          the meanings previously specified, except that the symbols "K6"   
          and "a" shall have the following meanings: 
          
          K6        is a scaling factor of 0.0001. 
          a         is as follows:

                         for units with more than 2500 annual hours         
                         available for operation, "a" = 2500,


                         for units with annual hours available for          
                         operation between 500 and 2500, inclusive, "a" =   
                         annual hours available for operation, and
 
                         for units with annual hours available for          
                         operation less than 500 hours, "a" = - 7500;

          provided, however, that a Participant may elect to avoid, in      
          whole or part, the effect on its Capability Responsibility of a   
          Restricted Unit's availability being limited to 2500 hours or     
          less a year by agreeing to leave unfilled a portion of its        
          dispatchable load allocation in accordance with rules to be       
          adopted by the Operations Committee.

B.   Amendment of Section 12.6

     The first two sentences of Section 12.6 of the NEPOOL Agreement are
amended to read as follows:

          If pursuant to Section 12.5A, a Participant is deemed to have     
          received energy service in any hour when the Participant (i) had  
          Entitlements in one or more generating units which were available 
          for service but were not scheduled for operation by NEPEX at      
          their full available Reserve Capability (or, to the extent        
          applicable, at their full available Temporary Reserve Capability) 
          and which, in the case of any Restricted Unit, had an unused      
          portion of an available Restricted Unit Operational Allowance     
          and/or (ii) had Scheduled Outage Service Entitlements, the        
          Participant shall be deemed to have received Economy Flow Service 
          and/or Scheduled Outage Service in an amount equal to the lesser  
          of:

          (a)  the amount of energy service the Participant is deemed to    
               have received pursuant to Section 12.5A, or

          (b) the amount of energy service which could have been provided   
              from its share of (1) the unused portion of the available     
              Reserve or Temporary Reserve Capabilities of the units        
              described in (i) above, as limited in the case of any         
              Restricted Unit by the unused portion of its available        
              Restricted Unit Operational Allowance, plus (2) its           
              Scheduled Outage Service Entitlements.

              Economy Flow Service is service which a Participant is        
              deemed to receive at any time to replace service which it     
              could have provided at the time from units described in (i)   
              above, and the amount of Economy Flow Service which it is     
              deemed to receive at the time shall not exceed the amount of  
              energy service which could have been provided from its share  
              of the unused portions of the available Reserve Capabilities  
              (or, to the extent applicable, the unused portion of the      
              available Temporary Reserve Capabilities or the unused        
              portion of the available Restricted Unit Operational          
              Allowances, whichever is controlling) of such units.

C.   Addition of Definitions of "Restricted Unit" and "Restricted Unit
Operational Allowance".



     The NEPOOL Agreement is amended by adding the following definitions
following the definition of "Reserve Savings Shares" in Section 15.37A:

               15.37B.   Restricted Unit is a generating unit, other than a 
                         hydroelectric unit, that is restricted in annual   
                         hours available for operation by regulatory        
                         requirements, contract terms or actual engineering 
                         or operating constraints.  Planned or forced       
                         outages due to maintenance requirements are not    
                         considered restrictions in annual hours available  
                         for operation.

               15.37C.   Restricted Unit Operational Allowance "Allowance") 
                         for a Participant's Entitlement in a Restricted    
                         Unit for any calendar year (or for the term of the
                         Entitlement in any year, if such term is for a     
                         shorter period than the year) is the number of     
                         hours for which the Restricted Unit is available   
                         for operation during the year or such shorter
                         period, whichever is applicable.  The Allowance    
                         for a Participant's Entitlement in a Restricted    
                         Unit for any year or shorter period shall be       
                         deemed to be exhausted when (i) the number of      
                         hours that the Operations Committee determines
                         the Participant would have used its Restricted     
                         Unit Entitlement to minimize the Participant's     
                         overall energy costs in the absence of NEPEX       
                         dispatch, plus (ii) the number of hours that the   
                         Participant is deemed to receive Scheduled Outage
                         Service with respect to its Entitlement in the     
                         Restricted Unit during the year or such shorter    
                         period pursuant to Section 12.6, equals the        
                         Allowance.

D.   Modification of Definition of "Scheduled Outage Service Entitlement".

     The definition of "Scheduled Outage Service Entitlement" in Section
15.38B of the NEPOOL Agreement is amended to read as follows:

               15.38B    Scheduled Outage Service Entitlement of a          
                         Participant is the amount of Scheduled Outage      
                         Service which the Participant is entitled to       
                         receive in any hour with respect to a generating   
                         unit which is scheduled by the Operations          
                         Committee to be out of service, in whole or in     
                         part, for maintenance during a period approved
                         for it by the Operations Committee for Scheduled   
                         Outage Service and is in fact out of service, in   
                         whole or in part, for any reason during the        
                         approved period.  Such amount is equal to the      
                         lesser of (i) the portion of the Participant's     
                         share of the Reserve Capability of such unit which 
                         is unavailable for service times an estimated      
                         average availability of such unit between its      
                         periodic scheduled outages or (ii) in the case of  
                         any generating unit with a currently applicable    
                         Temporary Reserve Capability, the portion of the   
                         Participant's share of the Temporary Reserve       
                         Capability which is unavailable for service;       
                         provided, however, that (a) in the case of any
                         Limited Fuel Unit, the amount of a Participant's   
                         Scheduled Outage Service Entitlement shall be      
                         reduced, if appropriate, to take account of any    
                         limit on the availability of stream flow or fuel   
                         to operate the unit during the outage period, and  
                         (b) in the case of any Restricted Unit, the        
                         Participant's Scheduled Outage Service Entitlement
                         shall be limited to the unused portion, if any, of 
                         its currently available Restricted Unit            
                         Operational Allowance for the unit.  The           
                         Operations Committee shall develop rules for       
                         establishing the estimated average availability of 
                         each unit between scheduled outages.  Such rules   
                         shall become effective upon approval by the        
                         Management Committee.

                                SECTION II
                        EFFECTIVENESS OF AGREEMENT

     Following its execution by the requisite number of Participants, this
Agreement, and the amendments provided for above, shall become effective on
August 1, 1993, or on such later date as the Federal Energy Regulatory
Commission shall provide that such amendment shall become effective.  

                                SECTION III
                          USAGE OF DEFINED TERMS

     The usage in this Agreement of terms which are defined in the NEPOOL
Agreement shall be deemed to be in accordance with the definitions thereof
in the NEPOOL Agreement.  
                          
                                SECTION IV
                               COUNTERPARTS

     This Agreement may be executed in any number of counterparts and each
executed counterpart shall have the same force and effect as an original
instrument and as if all the parties to all the counterparts had signed the
same instrument.  Any signature page of this Agreement may be detached from
any counterpart of this Agreement without impairing the legal effect of any
signatures thereof, and may be attached to another counterpart of this
Agreement identical in form hereto but having attached to it one or
more signature pages.  

     IN WITNESS WHEREOF, each of the signatories has caused a counterpart
signature page to be executed by its duly authorized representative, as of
the 1st day of May, 1993.  

                        COUNTERPART SIGNATURE PAGE
                    TO TWENTY-NINTH AGREEMENT AMENDING
                     NEW ENGLAND POWER POOL AGREEMENT
                          DATED AS OF MAY 1, 1993



     The NEPOOL Agreement, being dated as of September 1, 1971, and being
previously amended by twenty-eight (28) amendments, the most recent prior
amendment being an amendment dated as of September 15, 1992.  




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