Exhibit 21.1 SUBSIDIARIES AND WHOLLY-OWNED AFFILIATES OF CHI ENERGY, INC, #06-1138478 SUBSIDIARIES AND PARTNERSHIPS OF CHI ENERGY, INC. FEDERAL I.D. NUMBERS Aquenergy Systems, Inc. 57-0736018 Eagle & Phenix Hydro Company, Inc. 06-1288081 Asotin Hydro Company, Inc. 06-1226531 Echo Summit Hydro Company, Inc. * 06-1396364 Aziscohos Hydro Company, Inc. 06-1163591 Essex Company 04-1291880 Beaver Water Power Company Fulcrum, Inc. 82-0391234 Beaver Valley Holdings Ltd. 31-0990607 Great Dam Corp. 04-2684057 Beaver Valley Power Company 31-0990606 Highfalls Hydro Company, Inc. 06-1383519 Bedard Electrics, Inc. * 15-0599437 Hosiery Mill Hydro Company, Inc. 06-1279378 Boott Hydropower, Inc. 04-2798952 Hydrodev, Inc. No FEID#: Canadian Corp. BP Hydro Associates 06-1401488 Hydro Development Group, Inc. 16-1141332 BP Hydro Finance Partnership 06-1401492 Hydro Energies Corporation 03-0282579 CHI Acquisitions, Inc. 06-1259880 Iriquorp Acquisitions, Inc. * 16-1350126 CHI Acquisitions II, Inc. 06-1413523 Iriquorp Ltd. * 16-1283233 CHI Argentina USA, Inc. * 06-1391063 Iriquorp Steel Corporation 22-3039821 CHI-Black Canyon, Inc. (sold 12/31/98) 06-1325221 Joseph Hydro Company, Inc. * 06-1310385 CHI Canada, Inc. No FEID #: Canadian Corp. Kings River Hydro Company, Inc. 06-1390733 CHI-Felt Dam, Inc. * 06-1325223 Kinneytown Hydro Company, Inc. 06-1167454 CHI Finance, Inc. 06-1338722 LaChute Hydro Company, Inc. 06-1203686 CHI Highfalls, Inc. 06-1383520 Lawrence Hydroelectric Associates 04-2684094 CHI Hydroelectric Company, Inc. No FEID #: Canadian Corp. Les Developpements Hydroelectriques CHI, Inc. 06-1307651 CHI-Idaho, Inc. 06-1326247 Littlefield Hydro Company* 06-1163612 CHI-Magic Valley, Inc. 06-1325226 Littlefield Hydro Company, Inc.* 06-1163600 CHI Mountain States Operations, Inc. 06-1299910 Littleville Power Company, Inc. 04-2839064 CHI Operations, Inc. 06-1163588 Lower Saranac Corporation 13-3367119 CHI Patagonia, Inc.* 06-1370569 Mill Shoals Hydro Company, Inc. 06-1307652 CHI Philippines, Inc. * 06-1398884 Minnewawa Hydro Company, Inc.* 06-1163604 CHI-Pigeon Cove, Inc *. 06-1325222 North Canal Waterworks 04-6450580 CHI Power Inc. 06-1226530 Notch Butte Hydro Company, Inc. 06-1326248 CHI Power Marketing, Inc. 06-1257762 Ottauquechee Hydro Company, Inc. 06-1342764 CHI S.F., LP No FEID #: Canadian Partnership Pelzer Hydro Company, Inc. 06-1268834 CHI Universal, Inc. 06-1163590 Phoenix Hydro Company, Inc.* 06-1314432 CHI West, Inc. 06-1281001 Pioneer Hydro Company, Inc. * 06-1385379 CHI Western Operations, Inc. 06-1326249 Schoolfield Hydro Company, Inc.* 06-1261756 Coneross Power Corporation 57-0853383 Sheldon Vermont Hydro Company, Inc. 06-1325231 Consolidated Hydro Mountain States, Inc. 06-1299911 Slate Creek Hydro Company, Inc. 06-1292715 Consolidated Hydro New Hampshire, Inc. 06-1206274 Somersworth Hydro Company, Inc. 06-1163606 Consolidated Hydro New York, Inc. 06-1220156 TKO Power, Inc. 68-0134284 Consolidated Hydro Southeast, Inc. 06-1267066 Triton Power Company 14-1630384 Consolidated Hydro Vermont, Inc. 06-1254838 Twin Falls Hydro Company, Inc. 06-1263090 Coosa Pines Energy LLC (CHI Division) Ware Hydro Company, Inc. * 06-1320766 Coosa Pines Energy Holdings LLC (CHI Division) Willimantic Hydro Company, Inc. 06-1295505 Crosby Drive Investments, Inc. 04-3040899 Willimantic Power Corporation 03-0312305 MAJORITY OWNED SUBSIDIARIES AND PARTNERSHIPS OF CHI ENERGY, INC. Cascade Energy Limited Partnership * 06-1367501 SOCAL Energy Limited Partnership * 06-1366760 Cascade Pumped Storage, Inc. 06-1366654 SOCAL Pumped Storage, Inc. 06-1366651 CHI Patagonia Investments, L.P. * 06-1370600 Societe de Cogeneration Consolidated Pumped Storage Arkansas, Inc. 06-1302365 de St-Felicien, LP No FEID #: Canadian Partnership Consolidated Pumped Storage, Inc. 06-1267071 Summit Energy Storage Inc. * 06-1230814 River Mountain Limited Partnership 06-1391062 Summit Finance, Inc. 06-1236388 AFFILIATES OF CHI ENERGY, INC. Black River Hydro Associates 16-1214489 (Cataldo) Hydro Power Associates 16-1214491 Missisquoi Associates 82-0387855 Copenhagen Associates 16-1229159 Pyrites Associates 16-1211396 Hillsborough Hydroelectric, L.P. 13-3187877 Sheldon Springs Hydro Associates, L.P. 06-1383502 Hydrodev Societe en Commandite Slate Creek Hydro Associates, L.P. 13-3187471 No FEID #: Canadian Partnership Summit Energy Limited Partnership * 06-1344738 LaComb Hydro Limited Partnership 68-0105524 Twin Falls Hydro Associates, L.P. 06-1279573 (Final Return 12/31/98) Star Lake Hydro Partnership, GP Lower Saranac Hydro Partners, L.P. 13-3532743 No FEID #: Canadian Partnership 3/30/1999 *Dormant EXHIBIT21.1