|Exhibit 99(b)                                                                                                                                                                                                                                              
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|ESI TRACTEBEL FUNDING CORP.(the registrant)Certification Of Periodic Report                                                                                                                                                                                
|I, Mark R. Sorensen, Treasurer (equivalent to the Chief Financial Officer) of ESI Tractebel Funding Corp. 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 ESI Tractebel Funding Corp. and will be retained by ESI Tractebel Funding Corp. and furnished to the Securities and Exchange Commission or its staff upon request.