Nuclear power in Canada

{{Use Canadian English|date=August 2021}}

{{Use Canadian English|date=August 2021}}

{{Electricity generation in Canada}}

{{Electricity generation in Canada}}

Nuclear power in [[Canada]] is provided by 19 commercial reactors with a net capacity of 13.5 [[gigawatt]] (GW), producing a total of 95.6 [[terawatt-hour]]s (TWh) of electricity, which accounted for 16.6% of the country's total electric energy generation in 2015. All but one of these reactors are located in [[Ontario]], where they produced 61% of the province's electricity in 2019 (90.4 TWh).<ref name=":7">{{Cite web|url=http://www.ieso.ca/power-data/supply-overview/transmission-connected-generation|title=IESO Supply Overview|website=www.ieso.ca|publisher=[[Independent Electricity System Operator]]|access-date=September 15, 2017}}</ref> Seven smaller reactors are used for research and to produce [[radiopharmaceutical]]s for use in [[nuclear medicine]].

Nuclear power in [[Canada]] is provided by 17 commercial reactors with a net capacity of 12.7 [[gigawatt]] (GW), producing a total of 84.6 [[terawatt-hour]]s (TWh) of electricity, which accounted for 13% of the country's total electric energy generation in 2023. All but one of these reactors are located in [[Ontario]], where they produced 53% of the province's electricity in 2022. One reactor is located in [[New Brunswick]], where it produced 28% of the electricity.<ref>{{Cite web |title=Country Nuclear Power Profiles |url=https://cnpp.iaea.org/public/countries/CA/profile/highlights |access-date=2025-07-05 |website=cnpp.iaea.org}}</ref><ref>{{Cite book |title=ENERGY FACT BOOK 2024–2025 |publisher=Natural Resources Canada |year=2024 |language=en |issn=2370-5027}}</ref> Seven smaller reactors are used for research and to produce [[radiopharmaceutical]]s for use in [[nuclear medicine]].

All currently operating Canadian nuclear reactors are a type of [[pressurized heavy-water reactor]] (PHWR) of domestic design, the [[CANDU reactor]]. CANDU reactors have been exported to [[Rajasthan Atomic Power Station|India]], [[Karachi Nuclear Power Complex|Pakistan]], [[Embalse Nuclear Power Station|Argentina]], [[Wolseong Nuclear Power Plant|South Korea]], [[Cernavodă Nuclear Power Plant|Romania]], and [[Qinshan Nuclear Power Plant|China]]. While there are (as of 2022) no plans for new CANDUs in Canada or elsewhere, Canada remains a technology leader in heavy water reactors and natural uranium fueled reactors more broadly. The Indian [[IPHWR]]-line is an indigenized derivative of the CANDU while only a small number of pressurized heavy water reactors were built independent of the CANDU-line, mainly [[Atucha nuclear power plant]] in Argentina.

All currently operating Canadian nuclear reactors are a type of [[pressurized heavy-water reactor]] (PHWR) of domestic design, the [[CANDU reactor]]. CANDU reactors have been exported to [[Rajasthan Atomic Power Station|India]], [[Karachi Nuclear Power Complex|Pakistan]], [[Embalse Nuclear Power Station|Argentina]], [[Wolseong Nuclear Power Plant|South Korea]], [[Cernavodă Nuclear Power Plant|Romania]], and [[Qinshan Nuclear Power Plant|China]]. While there are (as of 2022) no plans for new CANDUs in Canada or elsewhere, Canada remains a technology leader in heavy water reactors and natural uranium fueled reactors more broadly. The Indian [[IPHWR]]-line is an indigenized derivative of the CANDU while only a small number of pressurized heavy water reactors were built independent of the CANDU-line, mainly [[Atucha nuclear power plant]] in Argentina.

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