Skip Ribbon Commands
Skip to main content
Hydroelectric Power

Hydroelectric Power

@RudyCuzzetto @darylkramp @DavidPiccini @shierd It was our pleasure. Thanks for the visit.

Sat Feb 16 17:13:27

RT @GirlsExpPhysics: "...physics was seen as an option for 30% of boys but just 8% of girls, while computing was being considered by 16% of…

Sat Feb 16 03:50:56

This massive @GE_Power generator stator will be traveling all the way from Poland to the #DarlingtonRefurb next mon… https://t.co/pz4opM0KJU

Fri Feb 15 21:15:56

​Hydroelectric power


Hydroelectric power is a timeless, renewable resource that has fuelled Ontario's economic growth since the beginning of the 20th century. Today, it accounts for more than one-third of Ontario Power Generation's electricity production. Hydroelectric generation, our lowest-cost power source, produced 30.4 terawatt hours in 2015.

The historic importance and future potential of hydroelectric power can be attributed to its low production costs, reliability, flexibility to meet both ongoing base electricity needs and peak demands, and its reliance on water — an indigenous, renewable resource.

OPG operates 66 hydroelectric stations, including a green power portfolio of 29 small hydroelectric plants, and 241 dams on 24 river systems. The smallest station has a generating capacity of just 800 kilowatts; the largest more than 1,400 megawatts.

Because the water we depend on is shared by many users, OPG maintains strong partnerships with Indigenous communities, governments, local industry, environmental groups, recreational users and others who have an interest in water and water management. Our primary partnerships focus on:

Watershed Management: balancing energy production requirements with environmental, commercial and recreational needs within a watershed.

Community Connections​: nurturing strong relationships with users of the watersheds on which our facilities are located.

Snow Accumulation

Winter snow accumulation in Ontario plays a role in determining the water levels and flow rates on river systems and lakes used by OPG's hydroelectric generating stations. Between March 1 and June 1 OPG gathers snow accumulation data and makes it available on this web site.