ALLETE, Inc. [ALE] Ameren Corporation [AEE] Avista Corporation [AVA]
CenterPoint Energy, Inc. [CNP] CH Energy Group, Inc. [CHG] China Hydroelectric Corporation [CHC]
DPL Inc.
Exelon Corporation [EXC]
MGE Energy, Inc. [MGEE]
NiSource Inc. [NI] Northeast Utilities [NU] NorthWestern Corporation [NWE] NRG Energy, Inc. [NRG] NV Energy, Inc. [NVE]
Otter Tail Corporation [OTTR]
Penn Virginia Resource Partners, L.P. [PVR] PNM Resources, Inc. [PNM] Public Service Enterprise Group Incorporated [PEG]
TransAlta Corporation [TAC]
U.S. Geothermal Inc. [HTM] UGI Corporation [UGI] Unitil Corporation [UTL]
Vectren Corporation [VVC]
Westar Energy, Inc. [WR]
