Slovakia Electricity: Generation Mix, Demand and Emissions
Slovakia generated 29.1 TWh of electricity in 2025, according to Ember. Nuclear was the largest source at 66.4%, followed by gas (11.3%) and hydro (10.9%). Demand was 26.7 TWh and each kWh generated emitted 95 gCO2/kWh. These are annual statistics for 2025, with monthly figures through July 2026; they are compiled from national sources and are not real time.
Key Facts
- Slovakia generated 29.1 TWh of electricity in 2025.
- Nuclear supplied 66.4% of Slovakia's electricity in 2025.
- Gas supplied 11.3% of Slovakia's electricity in 2025.
- Hydro supplied 10.9% of Slovakia's electricity in 2025.
- Low carbon sources (nuclear and renewables) supplied 85.2% of Slovakia's generation in 2025.
- The carbon intensity of Slovakia's electricity was 95 gCO2/kWh in 2025.
- Slovakia's carbon intensity in 2025 was 75% lower than in 1990, when it was 387 gCO2/kWh.
- Slovakia had the 62nd highest electricity demand among the 93 countries with Ember data for 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Total generation | 29.1 TWh | 2025 · Ember |
| Electricity demand | 26.7 TWh | 2025 · Ember |
| Demand per person | 4.88 MWh | 2025 · Ember |
| Net imports | -2.35 TWh | 2025 · Ember |
| Carbon intensity | 95 gCO2/kWh | 2025 · Ember |
| Power sector emissions | 2.76 MtCO2 | 2025 · Ember |
| Demand rank (countries with 2025 data) | 62 of 93 | 2025 · Ember |
Generation Mix, 2025
| Source | Generation | Share |
|---|---|---|
| Nuclear | 19.3 TWh | 66.4% |
| Gas | 3.28 TWh | 11.3% |
| Hydro | 3.16 TWh | 10.9% |
| Bioenergy | 1.58 TWh | 5.4% |
| Other fossil | 730 GWh | 2.5% |
| Solar | 700 GWh | 2.4% |
| Coal | 310 GWh | 1.1% |
| Other renewables | 10.0 GWh | 0.0% |
Year by Year
Ember annual statistics, 1990 to 2025Annual statistics through 2025, TWh
| Year | Nuclear | Gas | Hydro | Bioenergy | Other fossil |
|---|---|---|---|---|---|
| 1990 | 12.0 TWh | 1.82 TWh | 1.88 TWh | 0 TWh | 2.25 TWh |
| 1991 | 11.7 TWh | 2.12 TWh | 1.41 TWh | 0 TWh | 3.09 TWh |
| 1992 | 11.1 TWh | 870 GWh | 1.94 TWh | 0 TWh | 2.15 TWh |
| 1993 | 11.5 TWh | 1.18 TWh | 3.47 TWh | 0 TWh | 2.16 TWh |
| 1994 | 12.6 TWh | 2.19 TWh | 4.36 TWh | 0 TWh | 1.46 TWh |
| 1995 | 11.4 TWh | 2.38 TWh | 4.88 TWh | 0 TWh | 1.28 TWh |
| 1996 | 11.3 TWh | 2.34 TWh | 4.23 TWh | 0 TWh | 1.75 TWh |
| 1997 | 11.1 TWh | 2.33 TWh | 4.06 TWh | 0 TWh | 1.29 TWh |
| 1998 | 11.4 TWh | 2.35 TWh | 4.27 TWh | 0 TWh | 1.86 TWh |
| 1999 | 13.1 TWh | 3.05 TWh | 4.47 TWh | 0 TWh | 1.09 TWh |
| 2000 | 16.5 TWh | 3.34 TWh | 4.61 TWh | 0 TWh | 760 GWh |
| 2001 | 17.1 TWh | 2.70 TWh | 4.93 TWh | 150 GWh | 1.12 TWh |
| 2002 | 18.0 TWh | 2.51 TWh | 5.27 TWh | 150 GWh | 1.15 TWh |
| 2003 | 17.9 TWh | 2.40 TWh | 3.48 TWh | 100 GWh | 1.18 TWh |
| 2004 | 17.0 TWh | 2.42 TWh | 4.10 TWh | 20.0 GWh | 1.20 TWh |
| 2005 | 17.7 TWh | 2.18 TWh | 4.64 TWh | 30.0 GWh | 1.21 TWh |
| 2006 | 18.0 TWh | 1.91 TWh | 4.40 TWh | 400 GWh | 1.21 TWh |
| 2007 | 15.3 TWh | 1.62 TWh | 4.45 TWh | 470 GWh | 1.17 TWh |
| 2008 | 16.7 TWh | 1.61 TWh | 4.04 TWh | 520 GWh | 1.15 TWh |
| 2009 | 14.1 TWh | 1.97 TWh | 4.37 TWh | 540 GWh | 1.10 TWh |
| 2010 | 14.6 TWh | 2.21 TWh | 5.26 TWh | 660 GWh | 1.17 TWh |
| 2011 | 15.4 TWh | 3.15 TWh | 3.78 TWh | 820 GWh | 1.17 TWh |
| 2012 | 15.5 TWh | 2.85 TWh | 4.10 TWh | 940 GWh | 1.08 TWh |
| 2013 | 15.7 TWh | 2.39 TWh | 4.85 TWh | 910 GWh | 960 GWh |
| 2014 | 15.5 TWh | 1.62 TWh | 4.21 TWh | 1.42 TWh | 900 GWh |
| 2015 | 15.2 TWh | 1.60 TWh | 3.87 TWh | 1.66 TWh | 990 GWh |
| 2016 | 14.8 TWh | 1.52 TWh | 4.36 TWh | 1.73 TWh | 1.08 TWh |
| 2017 | 15.1 TWh | 1.67 TWh | 4.32 TWh | 1.70 TWh | 1.14 TWh |
| 2018 | 14.8 TWh | 1.86 TWh | 3.59 TWh | 1.63 TWh | 1.14 TWh |
| 2019 | 15.3 TWh | 3.07 TWh | 4.36 TWh | 1.69 TWh | 870 GWh |
| 2020 | 15.4 TWh | 3.57 TWh | 4.52 TWh | 1.67 TWh | 790 GWh |
| 2021 | 15.7 TWh | 4.37 TWh | 4.26 TWh | 1.84 TWh | 1.13 TWh |
| 2022 | 15.9 TWh | 2.10 TWh | 3.68 TWh | 1.49 TWh | 1.08 TWh |
| 2023 | 18.3 TWh | 2.28 TWh | 4.69 TWh | 1.41 TWh | 990 GWh |
| 2024 | 18.2 TWh | 2.88 TWh | 4.83 TWh | 1.58 TWh | 790 GWh |
| 2025 | 19.3 TWh | 3.28 TWh | 3.16 TWh | 1.58 TWh | 730 GWh |
| Year | Generation | Demand | Carbon intensity |
|---|---|---|---|
| 2025 | 29.1 TWh | 26.7 TWh | 95 gCO2/kWh |
| 2024 | 29.5 TWh | 26.6 TWh | 97 gCO2/kWh |
| 2023 | 29.5 TWh | 26.1 TWh | 115 gCO2/kWh |
| 2022 | 26.5 TWh | 28.0 TWh | 142 gCO2/kWh |
| 2021 | 29.7 TWh | 30.5 TWh | 167 gCO2/kWh |
| 2020 | 28.5 TWh | 28.8 TWh | 159 gCO2/kWh |
| 2019 | 28.2 TWh | 29.9 TWh | 171 gCO2/kWh |
| 2018 | 26.7 TWh | 30.3 TWh | 191 gCO2/kWh |
| 2017 | 27.4 TWh | 30.5 TWh | 184 gCO2/kWh |
| 2016 | 26.8 TWh | 29.5 TWh | 177 gCO2/kWh |
Full year by year history for Slovakia, 1990 to 2025
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025.
Month by Month
Ember monthly statistics through July 2026Monthly statistics through July 2026, TWh
| Month | Demand | Generation |
|---|---|---|
| 2024-08 | 2.08 TWh | 2.16 TWh |
| 2024-09 | 1.97 TWh | 2.27 TWh |
| 2024-10 | 2.14 TWh | 2.47 TWh |
| 2024-11 | 2.30 TWh | 2.42 TWh |
| 2024-12 | 2.34 TWh | 2.57 TWh |
| 2025-01 | 2.45 TWh | 2.68 TWh |
| 2025-02 | 2.30 TWh | 2.42 TWh |
| 2025-03 | 2.26 TWh | 2.40 TWh |
| 2025-04 | 2.04 TWh | 2.10 TWh |
| 2025-05 | 2.03 TWh | 2.15 TWh |
| 2025-06 | 1.95 TWh | 2.23 TWh |
| 2025-07 | 1.96 TWh | 2.10 TWh |
| 2025-08 | 1.94 TWh | 2.08 TWh |
| 2025-09 | 1.96 TWh | 2.22 TWh |
| 2025-10 | 2.26 TWh | 2.57 TWh |
| 2025-11 | 2.35 TWh | 2.68 TWh |
| 2025-12 | 2.38 TWh | 2.74 TWh |
| 2026-01 | 2.64 TWh | 2.77 TWh |
| 2026-02 | 2.29 TWh | 2.60 TWh |
| 2026-03 | 2.28 TWh | 2.59 TWh |
| 2026-04 | 2.08 TWh | 2.19 TWh |
| 2026-05 | 2.03 TWh | 2.15 TWh |
| 2026-06 | 2.05 TWh | 2.20 TWh |
| 2026-07 | 2.04 TWh | 2.22 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of July 2026.
Slovakia Electricity FAQ
What is the main source of electricity in Slovakia?
Nuclear was the largest source of electricity in Slovakia in 2025, supplying 66.4% of generation, followed by gas (11.3%) and hydro (10.9%). Figures are Ember annual statistics.
How much electricity does Slovakia use?
Slovakia used 26.7 TWh of electricity in 2025, about 4.88 MWh per person.
How clean is Slovakia's electricity?
Generating a kilowatt hour of electricity in Slovakia emitted 95 gCO2/kWh in 2025, and low carbon sources supplied 85.2% of generation. That is 79% below the world average of 459 gCO2/kWh.
Does Slovakia import electricity?
No. Slovakia was a net exporter in 2025, exporting 2.35 TWh more than it imported.