Active Electricity Utility Service Areas |
| Canada |
Kenora Hydro Electric Corporation Ltd. |
| Ontario |
Killaloe - Ottawa River Power |
| Alectra Utilities (Formally Horizon) |
Kingston Electricity Distribution |
| Alectra Utilities (Formally Powerstream) |
Kitchener-Wilmot Hydro Inc. |
| Alectra Utilities (formally Enersource) |
LakeFront Utilities Inc. |
| Alectra Utilities (formally Hydro One) |
Lakefield Distribution Inc. |
| Almonte |
Lakeland Power Disribution Ltd. |
| Asphodal-Norwood Distribution Inc. |
London Hydro Inc. |
| Atikokan Hydro Inc. |
Markham Hydro |
| Attawapiskat Power Corp. |
Middlesex Power Distribution Corporation |
| Aurora Hydro |
Midland Power Utility Corp. |
| Aylmer |
Milton Hydro |
| Beachburg - Ottawa River Power |
Mississippi Mills - Ottawa River Power |
| Bluewater Power Distribution Inc. |
Mount Brydges - Middlesex Power |
| Brant County Power Inc. |
Newbury Power Inc. |
| Brantford Power Inc. |
Newmarket Hydro Limited |
| Burlington Hydro Inc. |
Niagara Peninsula Energy Inc. |
| COLLUS Power Corp. (Collingwood Utility Services) |
Niagara-On-The-Lake-Hydro Inc. |
| Cambridge & North Dumfries Hydro Inc. |
Norfolk Power Inc. |
| Canadian Niagara Power Co. Ltd. |
North Bay Hydro |
| Cardinal - Rideau St. Lawrence Distribution |
Northern Ontario Wires Inc. |
| Cat Lake Power Utility |
Norwich PUC |
| Centre Wellington Hydro Ltd. |
Oakville Hydro Corporation |
| Chapleau Public Utilities Corp |
Orangeville Hydro Limited |
| Chatham-Kent Energy Inc. |
Orillia Power Distribution |
| Clinton Power Corporation |
Oshawa PUC Networks Inc. |
| Co-operative Hydro Embrun |
Ottawa River Power Corporation |
| Cornwall Electric-A Fortis Ontario Company |
Parkhill - Middlesex Power |
| Dutton Hydro Limited |
Parry Sound Power Corporation |
| E.L.K. Energy Inc. |
Pembroke - Ottawa River Power |
| East Zorra-Tavistock - Erie Thames Powerlines |
Peterborough Utility Services |
| Eastern Ontario Power |
Port Colborne Hydro-Electric Commission |
| Enwin Powerlines Ltd. |
Prescott - Rideau St. Lawrence Distribution |
| Eramosa(Guelph) |
Renfrew Hydro |
| Erie Thames Powerlines Corp. |
Richmond Hill Hydro (Alectra) |
| Espanola Regional Hydro Distribution Corp. |
Rideau St. Lawrence Distribution |
| Essex Power Corporation |
Sault Ste. Marie PUC Distribution |
| Festival Hydro Inc. |
Scugog Hydro |
| Fort Albany Power |
Sioux Lookout Hydro-Electric Commission |
| Fort Frances Power Corp. |
St. Thomas Energy Services Inc. |
| Goderich Hydro |
St.Catharines Hydro-Electric Commission |
| Grand Valley Energy |
Tay Hydro Electric Distribution Company Inc. |
| Granite Power |
Terrace Bay Superior Wires Inc. |
| Gravenhurst Hydro-Electric Commission |
Thessalon Hydro |
| Great Lakes Power Ltd. |
Thunder Bay Hydro |
| Greater Sudbury Hydro Inc. |
Tillsonburg Hydro Inc. |
| Grimsby Power Incorporated |
Toronto Hydro Electric System |
| Guelph Hydro Electric Systems Inc. |
Veridian Connections Inc. |
| Haldimand County Hydro Inc. |
Wasaga Distribution Inc. |
| Halton Hills Hydro Inc. |
Waterloo North Hydro Inc. |
| Hearst Power Distribution Company Limited |
Welland Hydro-Electric System Corp. |
| Hydro 2000 Inc. |
Wellington Electric Distribution Company |
| Hydro Hawkesbury Inc./Hawkesbury Hydro Inc |
Wellington North Power Inc. |
| Hydro One Networks Inc. |
West Nipissing Energy Services Ltd. |
| Hydro One Remotes |
West Perth Power Inc. |
| Hydro Ottawa Limited |
Westario Power Inc. |
| Ingersoll - Erie Thames Powerlines |
Whitby Hydro Electric Corporation |
| Innisfil Hydro |
Wingham PUC - Westario Power |
| Kashechewan Power Authority |
Woodstock Hydro Services Inc. |