Canada Nuclear Power: Generation, Share and Trend
Canada generated 85.3 TWh of electricity from nuclear in 2025, 13.1% of its total, according to Ember. That made it the 7th largest nuclear power producer in 2025 of the 32 countries with Ember data, comparing each country's latest year. Nuclear supplied 8.9% of the world's electricity in 2025. These are annual statistics for 2025, with monthly figures through June 2026; they are compiled from national sources and are not real time.
Key Facts
- Canada generated 85.3 TWh of electricity from nuclear in 2025.
- Nuclear supplied 13.1% of Canada's electricity in 2025.
- Canada was the 7th largest nuclear power producer in 2025 among the 32 countries with Ember data, comparing each country's latest year.
- Canada's nuclear generation in 2025 was 13% lower than in 2020, when it was 97.5 TWh.
- Canada's nuclear generation in 2025 was 16% lower than in 2015, when it was 101 TWh.
- Canada's nuclear generation peaked at 107 TWh in 1994.
- Canada's nuclear share in 2025 was above the world share of 8.9%.
- Canada had 12.7 GW of nuclear generating capacity in 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Nuclear generation | 85.3 TWh | 2025 · Ember |
| Share of Canada's electricity | 13.1% | 2025 · Ember |
| World share of nuclear | 8.9% | 2025 · Ember |
| Rank by nuclear generation (each country's latest year) | 7 of 32 | 2025 · Ember |
| Nuclear capacity | 12.7 GW | 2025 · Ember |
Nuclear Generation Year by Year
Ember annual statistics, 1985 to 2025Annual statistics through 2025, TWh
| Year | Nuclear |
|---|---|
| 1985 | 60.5 TWh |
| 1986 | 71.3 TWh |
| 1987 | 77.3 TWh |
| 1988 | 82.9 TWh |
| 1989 | 79.3 TWh |
| 1990 | 72.5 TWh |
| 1991 | 84.3 TWh |
| 1992 | 80.0 TWh |
| 1993 | 93.3 TWh |
| 1994 | 107 TWh |
| 1995 | 97.2 TWh |
| 1996 | 92.1 TWh |
| 1997 | 82.0 TWh |
| 1998 | 71.0 TWh |
| 1999 | 73.0 TWh |
| 2000 | 72.3 TWh |
| 2001 | 76.2 TWh |
| 2002 | 75.0 TWh |
| 2003 | 74.4 TWh |
| 2004 | 89.8 TWh |
| 2005 | 91.4 TWh |
| 2006 | 97.3 TWh |
| 2007 | 92.8 TWh |
| 2008 | 95.4 TWh |
| 2009 | 89.5 TWh |
| 2010 | 90.0 TWh |
| 2011 | 92.9 TWh |
| 2012 | 94.2 TWh |
| 2013 | 103 TWh |
| 2014 | 107 TWh |
| 2015 | 101 TWh |
| 2016 | 101 TWh |
| 2017 | 101 TWh |
| 2018 | 100 TWh |
| 2019 | 100 TWh |
| 2020 | 97.5 TWh |
| 2021 | 92.0 TWh |
| 2022 | 86.6 TWh |
| 2023 | 88.4 TWh |
| 2024 | 85.5 TWh |
| 2025 | 85.3 TWh |
Annual statistics through 2025, % of generation
| Year | Canada | World |
|---|---|---|
| 1985 | 13.2% | n/a |
| 1986 | 15.2% | n/a |
| 1987 | 15.6% | n/a |
| 1988 | 16.4% | n/a |
| 1989 | 15.9% | n/a |
| 1990 | 15.1% | n/a |
| 1991 | 16.6% | n/a |
| 1992 | 15.4% | n/a |
| 1993 | 17.6% | n/a |
| 1994 | 19.4% | n/a |
| 1995 | 17.4% | n/a |
| 1996 | 16.1% | n/a |
| 1997 | 14.3% | n/a |
| 1998 | 12.6% | n/a |
| 1999 | 12.6% | n/a |
| 2000 | 12.0% | 16.6% |
| 2001 | 13.0% | 16.9% |
| 2002 | 12.5% | 16.5% |
| 2003 | 12.6% | 15.6% |
| 2004 | 15.0% | 15.6% |
| 2005 | 14.7% | 15.0% |
| 2006 | 16.0% | 14.7% |
| 2007 | 14.6% | 13.7% |
| 2008 | 15.0% | 13.4% |
| 2009 | 14.6% | 13.3% |
| 2010 | 14.8% | 12.8% |
| 2011 | 14.6% | 11.9% |
| 2012 | 14.8% | 10.8% |
| 2013 | 15.7% | 10.6% |
| 2014 | 16.3% | 10.5% |
| 2015 | 15.3% | 10.6% |
| 2016 | 15.1% | 10.4% |
| 2017 | 15.0% | 10.2% |
| 2018 | 15.1% | 10.1% |
| 2019 | 15.3% | 10.3% |
| 2020 | 14.9% | 9.9% |
| 2021 | 14.1% | 9.8% |
| 2022 | 13.0% | 9.1% |
| 2023 | 13.8% | 9.1% |
| 2024 | 13.4% | 9.0% |
| 2025 | 13.1% | 8.9% |
| Year | Generation | Share | World share | Capacity |
|---|---|---|---|---|
| 2025 | 85.3 TWh | 13.1% | 8.9% | 12.7 GW |
| 2024 | 85.5 TWh | 13.4% | 9.0% | 12.7 GW |
| 2023 | 88.4 TWh | 13.8% | 9.1% | 12.7 GW |
| 2022 | 86.6 TWh | 13.0% | 9.1% | 13.1 GW |
| 2021 | 92.0 TWh | 14.1% | 9.8% | 13.1 GW |
| 2020 | 97.5 TWh | 14.9% | 9.9% | 12.5 GW |
| 2019 | 100 TWh | 15.3% | 10.3% | 13.3 GW |
| 2018 | 100 TWh | 15.1% | 10.1% | 13.3 GW |
| 2017 | 101 TWh | 15.0% | 10.2% | 14.0 GW |
| 2016 | 101 TWh | 15.1% | 10.4% | 14.0 GW |
Full year by year history for Canada
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025. World shares are Ember's World totals; ranks compare each country's latest year, which can differ between countries.
Nuclear Generation Month by Month
Ember monthly statistics through June 2026Monthly statistics through June 2026, TWh
| Month | Nuclear |
|---|---|
| 2024-07 | 7.53 TWh |
| 2024-08 | 7.37 TWh |
| 2024-09 | 7.15 TWh |
| 2024-10 | 6.60 TWh |
| 2024-11 | 6.64 TWh |
| 2024-12 | 8.06 TWh |
| 2025-01 | 7.79 TWh |
| 2025-02 | 6.15 TWh |
| 2025-03 | 7.01 TWh |
| 2025-04 | 7.10 TWh |
| 2025-05 | 7.55 TWh |
| 2025-06 | 7.31 TWh |
| 2025-07 | 6.97 TWh |
| 2025-08 | 6.93 TWh |
| 2025-09 | 6.38 TWh |
| 2025-10 | 5.83 TWh |
| 2025-11 | 5.60 TWh |
| 2025-12 | 6.96 TWh |
| 2026-01 | 7.37 TWh |
| 2026-02 | 6.16 TWh |
| 2026-03 | 7.55 TWh |
| 2026-04 | 6.31 TWh |
| 2026-05 | 6.28 TWh |
| 2026-06 | 6.98 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of June 2026. Monthly figures for Canada can differ slightly from the annual totals.