Pickering Nuclear Generating Station

Pickering Nuclear Generating Station
Unit 4 Facing east with the large vacuum building and water tower in the background
Pickering Nuclear Generating Station
Location within Canada
CountryCanada
LocationPickering, Durham Region, Ontario
Coordinates43°48′42″N 79°03′57″W / 43.81167°N 79.06583°W / 43.81167; -79.06583
StatusOperational
Construction beganUnit 1: June 1, 1966
Unit 2: September 1, 1966
Unit 3: December 1, 1967
Unit 4: May 1, 1968
Unit 5: November 1, 1974
Unit 6: October 1, 1975
Unit 7: March 1, 1976
Unit 8: September 1, 1976
Commission dateUnit 1: July 29, 1971
Unit 2: December 30, 1971
Unit 3: June 1, 1972
Unit June 4, 17, 1973
Unit 5: May 10, 1983
Unit 6: February 1, 1984
Unit 7: January 1, 1985
Unit 8: February 28, 1986
Decommission dateMay 28, 2007 (A2)
Oct 31, 2008 (A3)
Oct 1, 2024 (A1)
Dec 31, 2024 (A4)
Construction cost$716 million CAD (A station)
$3.84 billion CAD (B station)
OwnerOntario Power Generation (OPG)
OperatorOntario Power Generation (OPG)
Employees3000+
Nuclear power station
Reactor typeCANDU-500
Reactor supplierAECL
Cooling sourceLake Ontario
Thermal capacity4 × 1744 MWth
Power generation
Units operational2 × 518 MWe (NET B 6, 8)
1 × 520 MWe (NET B 7)
1 x 530 MWe (NET B 5)
Make and model4 × CANDU 500B
Units decommissioned4 × 515 MW
Nameplate capacity2086 MW
Capacity factor73.85% (lifetime)
87.07% (2019)
Annual net output23,600 GW·h (2019)
993,673 GW·h (lifetime)
External links
WebsitePickering Nuclear
CommonsRelated media on Commons
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Pickering Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Pickering, Ontario. It is one of the oldest nuclear power stations in the world and Canada's third-largest, with eight CANDU reactors. Since 2003, two of these units have been defuelled and deactivated, with two additional units being taken offline as of 2025. The remaining four produce about 11% of Ontario's power and employ 3,000 workers.

A single 1.8 MWe wind turbine, named the OPG 7 commemorative turbine, was installed on the site of the generating station until October 2019, when it was dismantled.