Romania Nuclear Power: Generation, Share and Trend
Romania generated 10.2 TWh of electricity from nuclear in 2025, 20.5% of its total, according to Ember. That made it the 26th 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
- Romania generated 10.2 TWh of electricity from nuclear in 2025.
- Nuclear supplied 20.5% of Romania's electricity in 2025.
- Romania was the 26th largest nuclear power producer in 2025 among the 32 countries with Ember data, comparing each country's latest year.
- Romania's nuclear generation in 2025 was 11% lower than in 2020, when it was 11.5 TWh.
- Romania's nuclear generation in 2025 was 12% lower than in 2015, when it was 11.6 TWh.
- Romania's nuclear generation peaked at 11.8 TWh in 2009.
- Romania's nuclear share in 2025 was above the world share of 8.9%.
- Romania had 1.30 GW of nuclear generating capacity in 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Nuclear generation | 10.2 TWh | 2025 · Ember |
| Share of Romania's electricity | 20.5% | 2025 · Ember |
| World share of nuclear | 8.9% | 2025 · Ember |
| Rank by nuclear generation (each country's latest year) | 26 of 32 | 2025 · Ember |
| Nuclear capacity | 1.30 GW | 2025 · Ember |
Nuclear Generation Year by Year
Ember annual statistics, 1990 to 2025Annual statistics through 2025, TWh
| Year | Nuclear |
|---|---|
| 1990 | 0 TWh |
| 1991 | 0 TWh |
| 1992 | 0 TWh |
| 1993 | 0 TWh |
| 1994 | 0 TWh |
| 1995 | 0 TWh |
| 1996 | 1.39 TWh |
| 1997 | 5.40 TWh |
| 1998 | 5.31 TWh |
| 1999 | 5.20 TWh |
| 2000 | 5.46 TWh |
| 2001 | 5.45 TWh |
| 2002 | 5.51 TWh |
| 2003 | 4.91 TWh |
| 2004 | 5.55 TWh |
| 2005 | 5.55 TWh |
| 2006 | 5.63 TWh |
| 2007 | 7.71 TWh |
| 2008 | 11.2 TWh |
| 2009 | 11.8 TWh |
| 2010 | 11.6 TWh |
| 2011 | 11.8 TWh |
| 2012 | 11.5 TWh |
| 2013 | 11.6 TWh |
| 2014 | 11.7 TWh |
| 2015 | 11.6 TWh |
| 2016 | 11.3 TWh |
| 2017 | 11.5 TWh |
| 2018 | 11.4 TWh |
| 2019 | 11.3 TWh |
| 2020 | 11.5 TWh |
| 2021 | 11.3 TWh |
| 2022 | 11.1 TWh |
| 2023 | 11.2 TWh |
| 2024 | 10.9 TWh |
| 2025 | 10.2 TWh |
Annual statistics through 2025, % of generation
| Year | Romania | World |
|---|---|---|
| 1990 | 0.0% | n/a |
| 1991 | 0.0% | n/a |
| 1992 | 0.0% | n/a |
| 1993 | 0.0% | n/a |
| 1994 | 0.0% | n/a |
| 1995 | 0.0% | n/a |
| 1996 | 2.3% | n/a |
| 1997 | 9.5% | n/a |
| 1998 | 10.0% | n/a |
| 1999 | 10.3% | n/a |
| 2000 | 10.6% | 16.6% |
| 2001 | 10.2% | 16.9% |
| 2002 | 10.1% | 16.5% |
| 2003 | 9.0% | 15.6% |
| 2004 | 9.8% | 15.6% |
| 2005 | 9.4% | 15.0% |
| 2006 | 9.0% | 14.7% |
| 2007 | 12.5% | 13.7% |
| 2008 | 17.3% | 13.4% |
| 2009 | 20.4% | 13.3% |
| 2010 | 19.2% | 12.8% |
| 2011 | 19.0% | 11.9% |
| 2012 | 19.6% | 10.8% |
| 2013 | 20.0% | 10.6% |
| 2014 | 18.0% | 10.5% |
| 2015 | 17.7% | 10.6% |
| 2016 | 17.6% | 10.4% |
| 2017 | 18.1% | 10.2% |
| 2018 | 17.8% | 10.1% |
| 2019 | 19.2% | 10.3% |
| 2020 | 20.8% | 9.9% |
| 2021 | 19.3% | 9.8% |
| 2022 | 20.3% | 9.1% |
| 2023 | 19.7% | 9.1% |
| 2024 | 20.7% | 9.0% |
| 2025 | 20.5% | 8.9% |
| Year | Generation | Share | World share | Capacity |
|---|---|---|---|---|
| 2025 | 10.2 TWh | 20.5% | 8.9% | 1.30 GW |
| 2024 | 10.9 TWh | 20.7% | 9.0% | 1.30 GW |
| 2023 | 11.2 TWh | 19.7% | 9.1% | 1.30 GW |
| 2022 | 11.1 TWh | 20.3% | 9.1% | 1.30 GW |
| 2021 | 11.3 TWh | 19.3% | 9.8% | 1.30 GW |
| 2020 | 11.5 TWh | 20.8% | 9.9% | 1.30 GW |
| 2019 | 11.3 TWh | 19.2% | 10.3% | 1.30 GW |
| 2018 | 11.4 TWh | 17.8% | 10.1% | 1.30 GW |
| 2017 | 11.5 TWh | 18.1% | 10.2% | 1.30 GW |
| 2016 | 11.3 TWh | 17.6% | 10.4% | 1.30 GW |
Full year by year history for Romania
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 | 970 GWh |
| 2024-10 | 940 GWh |
| 2024-11 | 960 GWh |
| 2024-12 | 940 GWh |
| 2025-01 | 940 GWh |
| 2025-02 | 840 GWh |
| 2025-03 | 930 GWh |
| 2025-04 | 900 GWh |
| 2025-05 | 610 GWh |
| 2025-06 | 480 GWh |
| 2025-07 | 900 GWh |
| 2025-08 | 900 GWh |
| 2025-09 | 880 GWh |
| 2025-10 | 920 GWh |
| 2025-11 | 890 GWh |
| 2025-12 | 910 GWh |
| 2026-01 | 910 GWh |
| 2026-02 | 820 GWh |
| 2026-03 | 900 GWh |
| 2026-04 | 880 GWh |
| 2026-05 | 200 GWh |
| 2026-06 | 450 GWh |
| 2026-07 | 760 GWh |
| 2026-08 | 190 GWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of August 2026. Monthly figures for Romania can differ slightly from the annual totals.