Finland Nuclear Power: Generation, Share and Trend
Finland generated 32.8 TWh of electricity from nuclear in 2025, 39.8% of its total, according to Ember. That made it the 14th 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 August 2026; they are compiled from national sources and are not real time.
Key Facts
- Finland generated 32.8 TWh of electricity from nuclear in 2025.
- Nuclear supplied 39.8% of Finland's electricity in 2025.
- Finland was the 14th largest nuclear power producer in 2025 among the 32 countries with Ember data, comparing each country's latest year.
- Finland's nuclear generation in 2025 was 41% higher than in 2020, when it was 23.3 TWh.
- Finland's nuclear generation in 2025 was 41% higher than in 2015, when it was 23.3 TWh.
- Finland's nuclear generation peaked at 34.3 TWh in 2023.
- Finland's nuclear share in 2025 was above the world share of 8.9%.
- Finland had 4.37 GW of nuclear generating capacity in 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Nuclear generation | 32.8 TWh | 2025 · Ember |
| Share of Finland's electricity | 39.8% | 2025 · Ember |
| World share of nuclear | 8.9% | 2025 · Ember |
| Rank by nuclear generation (each country's latest year) | 14 of 32 | 2025 · Ember |
| Nuclear capacity | 4.37 GW | 2025 · Ember |
Nuclear Generation Year by Year
Ember annual statistics, 1990 to 2025Annual statistics through 2025, TWh
| Year | Nuclear |
|---|---|
| 1990 | 19.2 TWh |
| 1991 | 19.5 TWh |
| 1992 | 19.3 TWh |
| 1993 | 19.9 TWh |
| 1994 | 19.4 TWh |
| 1995 | 19.2 TWh |
| 1996 | 19.5 TWh |
| 1997 | 20.9 TWh |
| 1998 | 21.9 TWh |
| 1999 | 23.0 TWh |
| 2000 | 22.5 TWh |
| 2001 | 22.8 TWh |
| 2002 | 22.3 TWh |
| 2003 | 22.7 TWh |
| 2004 | 22.7 TWh |
| 2005 | 23.3 TWh |
| 2006 | 22.9 TWh |
| 2007 | 23.4 TWh |
| 2008 | 23.0 TWh |
| 2009 | 23.5 TWh |
| 2010 | 22.8 TWh |
| 2011 | 23.2 TWh |
| 2012 | 23.0 TWh |
| 2013 | 23.6 TWh |
| 2014 | 23.6 TWh |
| 2015 | 23.3 TWh |
| 2016 | 23.2 TWh |
| 2017 | 22.5 TWh |
| 2018 | 22.8 TWh |
| 2019 | 23.9 TWh |
| 2020 | 23.3 TWh |
| 2021 | 23.6 TWh |
| 2022 | 25.3 TWh |
| 2023 | 34.3 TWh |
| 2024 | 32.6 TWh |
| 2025 | 32.8 TWh |
Annual statistics through 2025, % of generation
| Year | Finland | World |
|---|---|---|
| 1990 | 35.4% | n/a |
| 1991 | 33.7% | n/a |
| 1992 | 33.4% | n/a |
| 1993 | 32.6% | n/a |
| 1994 | 29.6% | n/a |
| 1995 | 30.0% | n/a |
| 1996 | 28.1% | n/a |
| 1997 | 30.2% | n/a |
| 1998 | 31.2% | n/a |
| 1999 | 33.1% | n/a |
| 2000 | 32.1% | 16.6% |
| 2001 | 30.6% | 16.9% |
| 2002 | 29.8% | 16.5% |
| 2003 | 27.0% | 15.6% |
| 2004 | 26.5% | 15.6% |
| 2005 | 33.0% | 15.0% |
| 2006 | 27.8% | 14.7% |
| 2007 | 28.9% | 13.7% |
| 2008 | 29.7% | 13.4% |
| 2009 | 32.7% | 13.3% |
| 2010 | 28.3% | 12.8% |
| 2011 | 31.6% | 11.9% |
| 2012 | 32.7% | 10.8% |
| 2013 | 33.1% | 10.6% |
| 2014 | 34.6% | 10.5% |
| 2015 | 33.9% | 10.6% |
| 2016 | 33.7% | 10.4% |
| 2017 | 33.3% | 10.2% |
| 2018 | 32.5% | 10.1% |
| 2019 | 34.8% | 10.3% |
| 2020 | 33.6% | 9.9% |
| 2021 | 32.7% | 9.8% |
| 2022 | 35.1% | 9.1% |
| 2023 | 42.1% | 9.1% |
| 2024 | 39.5% | 9.0% |
| 2025 | 39.8% | 8.9% |
| Year | Generation | Share | World share | Capacity |
|---|---|---|---|---|
| 2025 | 32.8 TWh | 39.8% | 8.9% | 4.37 GW |
| 2024 | 32.6 TWh | 39.5% | 9.0% | 4.37 GW |
| 2023 | 34.3 TWh | 42.1% | 9.1% | 4.39 GW |
| 2022 | 25.3 TWh | 35.1% | 9.1% | 2.79 GW |
| 2021 | 23.6 TWh | 32.7% | 9.8% | 2.79 GW |
| 2020 | 23.3 TWh | 33.6% | 9.9% | 2.79 GW |
| 2019 | 23.9 TWh | 34.8% | 10.3% | 2.79 GW |
| 2018 | 22.8 TWh | 32.5% | 10.1% | 2.78 GW |
| 2017 | 22.5 TWh | 33.3% | 10.2% | 2.78 GW |
| 2016 | 23.2 TWh | 33.7% | 10.4% | 2.76 GW |
Full year by year history for Finland
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 August 2026Monthly statistics through August 2026, TWh
| Month | Nuclear |
|---|---|
| 2024-09 | 2.21 TWh |
| 2024-10 | 2.72 TWh |
| 2024-11 | 2.73 TWh |
| 2024-12 | 3.00 TWh |
| 2025-01 | 3.04 TWh |
| 2025-02 | 2.76 TWh |
| 2025-03 | 1.95 TWh |
| 2025-04 | 1.62 TWh |
| 2025-05 | 2.38 TWh |
| 2025-06 | 2.32 TWh |
| 2025-07 | 3.00 TWh |
| 2025-08 | 2.81 TWh |
| 2025-09 | 2.38 TWh |
| 2025-10 | 2.98 TWh |
| 2025-11 | 2.96 TWh |
| 2025-12 | 3.06 TWh |
| 2026-01 | 3.13 TWh |
| 2026-02 | 2.84 TWh |
| 2026-03 | 3.08 TWh |
| 2026-04 | 2.52 TWh |
| 2026-05 | 2.43 TWh |
| 2026-06 | 2.62 TWh |
| 2026-07 | 2.96 TWh |
| 2026-08 | 2.54 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of August 2026. Monthly figures for Finland can differ slightly from the annual totals.