Active Power Inc	Empresa Nacional de Electricidad (ADR)	PGandE Corporation
AGL Resources Inc	Endesa SA (ADR)	Piedmont Natural Gas Co
Allegheny Energy Inc	Enel SpA (ADR)	Pinnacle West Capital
ALLETE Inc	Energen Corporation	PNM Resources Inc
Alliant Energy Corporation	EnergySouth Inc	PPL Corporation
Ameren Corporation	Energy East Corporation	Progress Energy Inc
American Electric Power	Energy West Incorporated	Public Service Enterprise Group Inc
American States Water Company	Enersis SA (ADR)	Puget Energy Inc
Aqua America Inc	Entergy Corporation	Questar Corporation
Aquila Inc	Equitable Resources Inc	Reliant Energy Inc
Artesian Resources Corp	Exelon Corporation	RGC Resources Inc
Atmos Energy Corporation	FirstEnergy Corp	SCANA Corporation
Avista Corporation	Florida Public Utilities Co	Scottish Power UK plc (ADR)
BayCorp Holdings Ltd	FPL Group Inc	SEMCO Energy Inc
Beacon Power Corp	Gexa Corp	Sempra Energy
BIW Limited	Great Plains Energy Incorporated	Sierra Pacific Resources
Black Hills Corporation	Green Mountain Power Corp	SJW Corp
California Water Service Group	Hawaiian Electric Industries Inc	Southern Union Company
Calpine Corporation	Huaneng Power International Inc (ADR)	Southwest Gas Corporation
Cap Rock Energy Corp	IDACORP Inc	Southwest Water Company
Cascade Natural Gas Corporation	International Power plc (ADR)	South Jersey Industries
CenterPoint Energy Inc	KeySpan Corporation	Suez SA (ADR)
Central Vermont Public Services Corp	Kinder Morgan Inc	TECO Energy Inc
Chesapeake Utilities	Korea Electric Power Corporation (ADR)	The AES Corporation
CH Energy Group Inc	Maine & Maritimes Corporation	The Empire District Electric Company
Cia Energetica de Minas Gerais (ADR)	MDU Resources Group Inc	The Laclede Group Inc
Cinergy Corp	MetroGAS SA (ADR)	The Southern Company
Cleco Corporation	MGE Energy Inc	The York Water Company
CMS Energy Corporation	Middlesex Water Company	TransAlta Corporation (USA)
Commerce Energy Group	National Fuel Gas Co	TransCanada Corporation (USA)
Companhia de Saneamento Basico (ADR)	National Grid Transco plc (ADR)	Transportadora de Gas SA (ADR)
Companhia Paranaense de Energia (ADR)	New Jersey Resources Corporation	TXU Corporation
Connecticut Water Service	Nicor Inc	UGI Corporation
Consolidated Edison Inc	NiSource Inc	UIL Holdings Corporation
Consolidated Water Co	Northeast Utilities System	UniSource Energy Corp
Constellation Energy Group	NorthWestern Corporation	United Utilities PLC (ADR)
CPFL Energia SA (ADR)	Northwest Natural Gas	Unitil Corporation
Delta Natural Gas Company	NRG Energy Inc	Vectren Corporation
Dominion Resources Inc	NSTAR	Veolia Environnement (ADR)
DPL Inc	OGE Energy Corp	Westar Energy Inc
DTE Energy Company	ONEOK Inc	WGL Holdings Inc
Duke Energy Corporation	Ormat Technologies Inc	Wisconsin Energy Corporation
Duquesne Light Holdings Inc	Otter Tail Corporation	WPS Resources Corp
Edison International	Pennichuck Corporation	Xcel Energy Inc
EDP Energias de Portugal SA (ADR)	Peoples Energy Corp
El Paso Electric Company	Pepco Holdings Inc