Information displayed, including capacity data, is accurate to the end of December 31, 2012.

Hydroelectric Generation  

As one of the cleanest sources of electricity, Ontario's waterways provide many opportunities for renewable energy projects, and is a proven critical resource for the sustainability of the electricity system.

Water is used to generate electricity by harnessing the energy in moving water. The basic process is to take water from a river or lake and pass it through a tunnel or tube that includes a drop in elevation. The moving water then spins a turbine connected to a generator that produces electricity.

Q4 2012 Update
By the end of the reporting period, the OPA was managing 2,435 MW of combined capacity from hydroelectric projects, 1,710 MW in commercial operaton and 725 MW under development.

Of the total capacity, 1,033 MW were developed with Aboriginal participation.

All of the capacity from projects that are currently under development is scheduled to be in-service at or before the end of 2016.
 

Current Facilities (not all facilities are individually listed)
Facilities in commercial operation (1,710 MW)

• Andrews GS (47 MW) - Montreal River
• Aubrey Falls GS (162 MW) - Mississagi River
• Bracebridge Falls GS (2.6 MW) - Bracebridge: Muskoka River
• Brewers Mills - Seely’s Bay (0.9 MW) - Cataraqui River
• Burk’s Falls (1.1 MW) – Burk’s Falls - Magnetawan River
• Calm Lake GS (9 MW) - Bennett Township: Rainy River
• Campbellford GS (2 MW) - Campbellford: Trent Severn
• Chaudiere  No.  4.  GS - Ottawa (9.3 MW) - Ottawa River
• Clergue GS (52 MW) - St. Mary’s River
• Current River GS (0.5 MW) - Thunder Bay: Current River
• Dunford GS (45 MW) - Michipicoten River
• Fort Frances GS (10 MW) - Fort Frances: Rainy River
• Gananoque (0.7 MW) - Gananoque: Gananoque River
• Gartshore GS (23 MW) - Montreal River
• Glen Miller GS (8 MW) - Trenton: Trent River
• Harris GS (12 MW) - Magpie River
• Healey Falls GS (15.7 MW) - Trenton: Trent River
• Heywood GS (7.2 MW) - St. Catharines: Twelve Mile Creek
• Hogg GS (18 MW) - Montreal River
• Hollingsworth GS (23 MW) - Michipicoten River
• Hound Chute GS (9.5 MW) - Timiskaming: Montreal River
• Iroquois Falls GS (29 MW) - Iroquois Falls: Abitibi River
• Island Falls GS (38 MW) - Smooth Rock Falls: Abitibi River
• Kagawong GS (0.8 MW) - Kagawong: Kagawong River
• Kenora GS (6 MW) - Kenora: Winnipeg River
• Kingston Mills (1.9 MW) - Kingston: Cataraqui River
• Lac Seul/Ear Falls GS (29 MW) - Ear Falls: English River
• London Street GS (4.1 MW) - Peterborough: Otonabee River
• Lower Sturgeon GS (14 MW) - Timmins: Mattagami River
• MacKay GS (62 MW) - Montreal River
• Matthias GS (3 MW) - Bracebridge: South Musoka River
• McPhail GS (13 MW) - Michipicoten River
• Minden GS (4 MW)- MInden: Gull River
• Mission GS (16 MW) - Magpie River
• Norman GS (10 MW) - Kenora: Winnipeg River
• Rayner & GS (46 MW) - Wharnclife: Mississagi River
• Renfrew Lower Plant (1 MW) - Renfrew: Bonnechere River
• Renfrew Upper Plant (1 MW) - Renfrew: Bonnechere River
• Rideau Falls (2 MW) - Ottawa: Rideau Canal
• Scarfe Lake GS (2.3 MW) - Blind River: Canoe Lake
• Scone GS (0.7 MW) - Hamlet of Scone: North Saugeen River
• Scott Falls GS (22 MW) - Michipicoten River
• Steephill GS (16 MW) - Magpie River
• Stewart GS (0.2 MW) - Arnprior: Waba
• Sturgeon Falls GS (7 MW) - Bennett Township: Seine River
• Swift Rapids GS (7.9 MW) - Severn Falls: Severn River
• Tembec GS (8 MW) - Smooth Rock Falls: Mattagami River
• Twin Falls GS (22 MW) - Iroquois Falls: Abitibi River
• Umbata Falls GS (23 MW) - Marathon: White River
• Washburn (0.2 MW) – Seeley’s Bay: Cataraqui River
• Wawaitin GS (15 MW) - Timmins: Mattagami River
• Wells GS (239 MW) - Wharnclife: Mississagi River
• West Nipissing Power Generation (6.5 MW) - Sturgeon River
• Wilson’s Falls (2.9 MW) - Bracebridge: Muskoka River
• 635294 Ontario Limited GS (0.5 MW) - Ramore: Black River
• Feed-in Tariff (0 MW) - facilities are not individually listed
• Renewable Energy Standard Offer (28.21 MW) - facilities are not individually listed
   

Projects under development (725 MW)

• Harmon GS (78 MW) - Kapuskasing: Mattagami River
• Kipling GS (78 MW) - Kapuskasing: Mattagami River
• Little Long GS (67 MW) - Kapuskasing: Mattagami River
• Smoky Falls GS (215 MW) - Timmins: Mattagami River
• Yellow Falls (16 MW) - Smooth Rock Falls: Mattagami River
• Feed-in Tariff (183.49 MW) - facilities are not individually listed
• Renewable Energy Standard Offer (0 MW) - facilities are not individually listed