|Exhibit 99(f)                                                                                                                                                                                                                                                                                                 
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|NORTHEAST ENERGY ASSOCIATES, A LIMITED PARTNERSHIP(the registrant)Certification Of Periodic Report                                                                                                                                                                                                            
|I, Mark R. Sorensen, Vice President and Treasurer of ESI Northeast Energy GP, Inc. (equivalent to the Chief Financial Officer of registrant) as Administrative General Partner of Northeast Energy Associates, a limited partnership certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
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|Dated:  March 27, 2003                                                                                                                                                                                                                                                                                        
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|A signed original of this written statement required by Section 906 has been provided to Northeast Energy Associates, a limited partnership and will be retained by Northeast Energy Associates, a limited partnership and furnished to the Securities and Exchange Commission or its staff upon request.