Exhibit 21
Subsidiaries of Registrant
As of December 31, 2002
| Legal Name | Domicile | |
|---|---|---|
| Equitable Resources, Inc. | USA, Pennsylvania | |
| Appalachian Basin Partners, LP | USA, Delaware | |
| Carnegie Interstate Pipeline Company | USA, Delaware | |
| EAL/ERI Cogeneration Partners LP | USA, Delaware | |
| EI Colton, LLC | USA, Delaware | |
| EI Hunterdon, LLC | USA, Delaware | |
| EI Management Services, LLC | USA, Delaware | |
| EI Plymouth, LLC | USA, Delaware | |
| EI Providence LLC | USA, Delaware | |
| Energy Infrastructure, LLC | USA, Delaware | |
| EPC Investments, Inc. | USA, Delaware | |
| EQT Capital Corporation | USA, Delaware | |
| EQT IP Ventures, LLC | USA, Delaware | |
| Equitable Energy, LLC | USA, Delaware | |
| Equitable Field Services, LLC | USA, Delaware | |
| Equitable Gathering, LLC | USA, Delaware | |
| Equitable Homeworks, LLC | USA, Pennsylvania | |
| Equitable Production Company | USA, Pennsylvania | |
| Equitable Resources Insurance Company, Ltd. | Cayman Islands | |
| Equitable Utilities Investments, Inc. | USA, Delaware | |
| Equitrans, LP | USA, Pennsylvania | |
| ERI Costa Rica, LDC | Cayman Islands | |
| ERI Group LDC | Cayman Islands | |
| ERI Holdings | Cayman Islands | |
| ERI Holdings II | Cayman Islands | |
| ERI Investments, Inc. | USA, Delaware | |
| ERI JAM, LLC | USA, Delaware | |
| ERI Services (St. Lucia) Company, Ltd. | St. Lucia | |
| ET Blue Grass Clearing, LLC | USA, Delaware | |
| ET Blue Grass Company | USA, Delaware | |
| Kentucky West Virginia Gas Company, LLC | USA, Delaware | |
| NORESCO, LP | USA, Delaware | |
| NORESCO Holdings, Inc. | USA, Delaware | |
| NORESCO Investments, Inc. | USA, Delaware | |
| NORESCO, LLC | USA, Delaware | |
| PSC Cogeneration, LP | USA, Connecticut | |
| Three Rivers Pipeline Corporation | USA, Texas |
