EX-99 20 ex99-18.htm ORGANIZATION CHART OF HORIZON POWER Organization Chart of Horizon Power Inc. as an EWG

Exhibit G-3

National Fuel Gas Company
Organization Chart of Exempt Wholesale Generator (EWG)
As of September 30, 2001


                           ---------------------------
                            National Fuel Gas Company
                           ---------------------------

                                                     100%
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                               Horizon Power, Inc.
                                     (EWG)
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                                                      50%
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                          Energy Systems North East LLC
                                     (EWG)
                       ----------------------------------