Ontario Power Market
Ontario Market Participants

ABB Inc.
Abitibi-Consolidated Company of Canada
ACH Limited Partnership
Affi nia Canada Corp
Ainsworth Engineered Canada Limited
Partnership
Air Liquide Canada Inc.
Air Products Canada Ltd.
Algoma Steel Inc.
Algonquin Power (Nagagami) Limited
Partnership
ALLETE, Inc. d/b/a Minnesota Power
American Water Services Canada Corp.
André Gauthier Holding Inc.
Atikokan Hydro Inc.
Atlantic Packaging Products Ltd.
Atomic Energy of Canada Limited
Attawapiskat Power Corporation
Barrick Gold Corporation –
Holt McDermott Mine
Barrie Hydro Distribution Inc.
Beaver Power Corporation.
BJ Energy LLC
Bluewater Power Distribution Corporation
Bowater Canadian Forest Products Inc.
BP Canada Energy Company
Brant County Power Inc.
Brantford Power Inc.
Brighton Beach Power L.P.
Brookfi eld Energy Marketing Inc.
Brookfi eld Energy Marketing LP - Lievre
Brookfi eld Power Wind Prince LP
Bruce Power Inc.
Burlington Hydro Inc.
Cabot Canada Ltd.
Calpine Energy Services Canada Partnership
Cambridge and North Dumfries Hydro Inc.
Campbellford-Seymour Electric
Generation Inc.
Canadian Hydro Developers, Inc.
Canadian Niagara Power Inc.
Cardinal Power of Canada L.P.
Cargill Energy Trading Canada Inc.
Carmeuse Lime (Spragge) Limited
Carmichael Limited Partnership
Cascades Fine Papers Group Thunder Bay Inc.
CASCO Inc. – Cardinal
Cat Lake Power Utility Ltd.
Centre Wellington Hydro Ltd.
Chapleau Public Utilities Corp.
Chatham-Kent Hydro Inc.
Citadel Financial Products S.a.r.l.
Clean Power Operating Trust
Clinton Power Corporation
CMS Energy Resource Management Company
Cochrane Power Corporation
COLLUS Power Corporation.
Commercial Alcohols Inc.
Comsatec Inc.
Conectiv Energy Supply Inc.
Constellation Energy Commodities Group, Inc.
Constellation NewEnergy Canada Inc.
Constellation NewEnergy Inc.
Consumers Energy Company
Coral Energy Canada Inc.
Cytec Canada Inc.
De Beers Canada Inc.
Direct Energy Marketing Inc.
Direct Energy Marketing Limited
Dofasco Inc.
Domtar Inc.
Domtar Pulp and Paper Products Inc.
Dow Chemical Canada Inc.
DTE Energy Trading Inc.
Duke Energy Marketing Limited Partnership
Dynegy Power Marketing Inc.
Dyno Nobel Nitrogen Inc.
E. L. K. Energy Inc.
Ecotricity Guelph Inc.
Emera Energy Incorporated
Enbridge Ontario Wind Power L.P.
Enbridge Pipelines Inc.
Energy Advantage Inc.
Energy Ottawa Inc.
Energy Profi les Limited
Enersource Hydro Mississauga Inc.
Enwin Powerlines Ltd.
Enwin Utilities Ltd.
EPCOR Merchant and Capital L.P.
EPCOR Power Development Corporation
EPCOR Regional Power Services
Limited Partnership
Erie Shores Wind Farm Limited Partnership
Erie Thames Powerlines Corporation
Espanola Regional Hydro Distribution
Corporation
Essex Powerlines Corporation
ESSROC Canada Inc.
Exelon Generation Company LLC
Falconbridge Limited - GECO Division
Falconbridge Limited - Mattabi Division
Falconbridge Limited – Ontario Divisions
Festival Hydro Inc.
First Commodities Ltd.
First Nickel Inc.
Five Nations Energy Inc.
Flakeboard Company Limited
Ford Motor Company of Canada, Limited
Ford Motor Company of Canada,
Limited - Essex Site
Ford Motor Company of Canada,
Limited - St. Thomas Site
Ford Motor Company of Canada,
Limited - Windsor Site
Fort Albany Power Corporation
Fort Frances Power Corporation
Fortis Energy Marketing & Trading G.P.
FortisOntario Inc.
General Motors of Canada Limited
GenSet Resource Management Inc.
Georgia-Pacifi c Canada Inc.
Gerdau AmeriSteel Cambridge Inc.
Gerdau AmeriSteel Corporation
Glen Miller Power, Limited Partnership
Goldcorp Inc. Red Lake Mine
Goreway Station Partnership
Grand Valley Energy Inc.
Great Lakes Power Limited – Distribution
Division
Great Lakes Power Limited – Generation
Division
Great Lakes Power Limited –
Transmission Division
Greater Sudbury Hydro Inc.
Greater Toronto Airport Authority
Greenfi eld Energy Centre LP
Grimsby Power Incorporated
Guelph Hydro Electric Systems Inc.
Guelph Hydro Electric Systems Inc.
– Rockwood Div.
Haldimand County Hydro Inc.
Haley Industries Limited
Halton Hills Hydro Inc.
Hamilton Renewable Power Inc.
Hamilton Specialty Bar Corporation
Hearst Power Distribution Company Limited
Horizon Utilities Corporation
HQ Energy Marketing Inc.
Hydro Hawkesbury Inc./Hawkesbury Hydro Inc.
Hydro One Brampton Networks Inc.
Hydro One Networks Inc.
Hydro Ottawa Limited
IBM Canada Limited.
Imperial Oil Limited
Inco Limited - Ontario Division
Inmet Mining Corporation
Innisfi l Hydro Distribution Systems Limited
Interlake Acquisition Corporation Limited
Invista Canada Company
Invista Canada Company - Bath Site
Iroquois Falls Power Corp.
Ivaco Rolling Mills 2004 L.P.
J.P. Morgan Ventures Energy Corporation
Jungbunzlauer Canada Inc.
Kashechewan Power Corporation
Kellogg Canada Inc.
Kenora Hydro Electric Corporation Ltd
Kingston Cogen Limited Partnership
Kingston Electricity Distribution Limited
Kinross Gold Corporation
Kirkland Lake Gold Inc.
Kirkland Lake Power Corp.
Kitchener-Wilmot Hydro Inc.
Lac Des Iles Mines Ltd./North American
Palladium Ltd.
Lafarge Canada Inc. Cement Operations
Lafarge Canada Inc. Construction Materials
Group- Eastern Region
Lake Shore Gold Corp.
Lake Superior Power Limited Partnership
Lakefront Utilities Inc.
Lanxess Inc.
Lehman Brothers Commodity Services Inc.
Lighthouse Energy Trading Co., Inc.
London Hydro Inc.
Long Sault Joint Venture
MAG Energy Solutions Inc.
Manitoba Hydro Electric Board
Marathon Pulp Inc.
McMaster University
Merrill Lynch Commodities Canada, ULC
Middlesex Power Distribution Corporation
Midland Power Utility Corporation
Milton Hydro Distribution Inc.
Mirant Canada Energy Financial
Products Ltd.
Mississagi Power Trust
MMFX Steel of Canada, Inc.
Morgan Stanley Capital Group Inc.
National Research Council Canada
Neenah Paper Company of Canada
New York Power Authority
Newmarket Hydro Ltd.
Newmont Canada Limited
Niagara Falls Hydro Inc.
Niagara-on-the-Lake Hydro Inc.
Norampac Inc. - Red Rock Division
Norampac Inc. - Trenton Division
Norfolk Power Distribution Inc.
North Bay Hydro Distribution Limited
Northern Ontario Wires Inc.
Northern States Power Company
NorthPoint Energy Solutions Inc.
Notre Development Corporation
NOVA Chemicals (Canada) Ltd.
Novelis Inc.
NRG Power Marketing Inc.
O.N.Tel Inc.
Oakville Hydro Electricity Distribution Inc.
Ontario Clean Water Agency
Ontario Electricity Financial Corporation
Ontario Power Generation Inc.
Orangeville Hydro Limited
Orillia Power Distribution Corporation
Oshawa PUC Networks Inc.
Oxy Vinyls Canada Inc.
PanAbrasive Inc.
Parry Sound Power Corporation
Peninsula West Utilities Limited
Peterborough Distribution Inc.
Peterborough Utilities Inc.
Placer Dome (CLA) Limited
Port Colborne Hydro Inc.
Portlands Energy Centre Inc.
Powerex Corporation.
PowerStream Inc.
PowerTrail Inc.
PPL EnergyPlus LLC
Praxair Canada Inc.
Premstar Energy Canada Ltd.
PSEG Energy Resources and Trade
PUC Distribution Inc.
Rainbow Energy Marketing Corporation
Rainy River Energy Corporation
Rideau St. Lawrence Distribution Inc.
River Gold Mines Ltd.
Rodan Energy and Metering Solutions Inc.
Roxmark Mines Limited
Royal Group Technologies Limited
Saint-Gobain Ceramic Materials Canada Inc.
Saracen Merchant Energy LP
Select Energy New York Inc.
Selectpower Inc.
Sempra Energy Solutions
Sempra Energy Trading Corp.
SESCO Enterprises Canada Ltd.
SESCO Enterprises, LLC
Shell Canada Products Limited
Sifto Canada Inc.
Silverhill Ltd.
Smurfi t-Stone Container Canada Inc.
Split Rock Energy LLC
Spruce Falls Inc.
St. Andrew Goldfi elds Inc.
St. Marys Cement Inc.
St. Marys Paper Ltd.
St. Thomas Energy Inc.
Stelco Inc.
Sun-Canadian Pipe Line Company Limited
Suncor Energy Products Inc.
Suncor Energy Products Inc. - Ripley
Susquehanna Energy Products, LLC
Tembec Pulp Group - Kraft Pulp Division-
Smooth Rock Falls
Terra International (Canada) Inc.
Terra Power Systems Inc.
Terrace Bay Pulp Inc.
The Cincinnati Gas & Electric Company
The Detroit Edison Company
Thunder Bay Hydro Electricity Distribution Inc.
Tillsonburg Hydro Inc.
Timminco Limited
Toromont Energy Ltd.
Toronto District School Board
Toronto Hydro Energy Services Inc.
Toronto Hydro-Electric System Limited
Toyota Motor Manufacturing Canada Inc.
Tractebel Canada Inc.- West Windsor Power
TransAlta CoGeneration LP
TransAlta Energy Corporation
TransAlta Energy Marketing (US) Inc.
TransAlta Energy Marketing Corp.
TransCanada Energy Ltd.
TransCanada Power Marketing Limited.
Twin Falls Limited Partnership
TXU Energy Trading Canada Limited
UBS Commodities Canada Ltd.
Umbata Falls, Limited Partnership
Valerie Falls Limited Partnership
Veridian Connections Inc.
Veridian Connections Inc. - Gravenhurst
W&E International (Canada) Corp.
Wasaga Distribution Inc.
Washington Mills Electro Minerals
Corporation
Waterloo North Hydro Inc.
Welland Hydro Electric System Corporation.
Wellington North Power Inc.
Wescast Industries Inc.
West Coast Huron Energy Inc.
West Nipissing Energy Services Inc.
West Perth Power Inc.
Westario Power Inc.
Weyerhaeuser Company Limited
Whitby Cogeneration Limited Partnership
Whitby Hydro Electric Corporation
Williams Energy Marketing & Trading
Canada Inc.
Williams Operating Corporation
Windsor Casino
Woodstock Hydro Services Inc.
WPS Energy Services of Canada Corporation
WPS Energy Services, Inc.