Slovakia energy mix & electricity
In 2025, Slovakia generated 29.1 TWh of electricity. More than half of it, 66.4%, came from nuclear power; natural gas was a distant second with 11.3%.
Electricity generation by source in 2025
Share of electricity generation by source, with the change in percentage points over the last ten years.
| Source | TWh | Share | 10-yr Δ pp |
|---|---|---|---|
| Nuclear | 19.33 | 66.4% | +9.5 |
| Gas | 3.28 | 11.3% | +5.3 |
| Hydro | 3.16 | 10.9% | −3.7 |
| Bioenergy | 1.58 | 5.4% | −0.8 |
| Oil | 0.73 | 2.5% | −1.2 |
| Solar | 0.7 | 2.4% | +0.5 |
| Coal | 0.31 | 1.1% | −9.6 |
| Other renewables | 0.01 | 0% | 0 |
| Total | 29.1 | 100% |
Slovakia: electricity in context
In 2025, Slovakia generated 29.1 TWh of electricity. That is similar to Azerbaijan. More than half of it, 66.4%, came from nuclear power; natural gas was a distant second with 11.3%.
18.7% of the country’s power came from renewable sources: 111th of 158 countries. This puts it 15 points below the world average of 33.8%. It is also below the average for Europe (41.6%). The EU-27 average is higher, at 47.7%. Because nuclear contributes another 66.4%, the low-carbon share is considerably higher, at 85.2%. Generating one kWh emits about 95 g CO₂e here (world average: 458 g). That is a very low-carbon power system. On carbon intensity, Slovakia ranks 21st of 158 from the cleanest.
The decade’s big winner is nuclear power, up 4.2 TWh between 2015 and 2025 (plus 9.5 percentage points of the mix). Meanwhile coal lost the most ground, down 2.5 TWh. The net effect: renewables lost 4 percentage points of share since 2015. Total generation grew by 2.5 TWh over the same period. Carbon intensity dropped from 177 to 95 g/kWh, a 47% cut.
Coal is in clear retreat: its share fell from 10.6% in 2015 to 1.1% in 2025, after peaking at 31.1% back in 1992. In absolute terms, coal generation peaked in 1990 at 7.5 TWh and has since fallen 96%.
Wind and solar together provided 2.4% of electricity (solar 2.4%, wind 0%), compared with 17.3% worldwide. Per person, that is 128 kWh of solar electricity a year, versus a global average of 338 kWh.
Slovakia generates 5,315 kWh of electricity per resident each year, 1.4 times the global average. Slovakia is a net exporter, selling 2.4 TWh more electricity abroad than it imports (9% of domestic demand).
How the power mix has changed
Electricity generation by source since 1990. Switch to shares to see the structural shift independent of demand growth.
Renewables and carbon intensity
Slovakia against the world, Europe and EU-27 averages.
Total energy: beyond electricity
Primary energy covers transport, heating and industry too. Renewables supply 11.3% of primary energy and fossil fuels 63.9% (2024). Per person, that is 32,883 kWh a year (world: 21,654).
Substitution method: non-fossil electricity is converted to the primary energy a fossil plant would have needed.
Domestic extraction of coal, gas and oil, in energy terms.
Power plants in Slovakia
The WRI Global Power Plant Database lists 30 utility-scale plants in Slovakia with a combined capacity of 6.2 GW. Hydro plants account for the largest slice (37% of listed capacity). The biggest single plant is Bohunice Nuclear Power Plant Slovakia (880 MW, Nuclear). The database was last updated in 2021, so newer wind and solar farms and rooftop PV are under-represented.
Largest power plants
| # | Plant | Fuel | Capacity MW | Commissioned | Owner |
|---|---|---|---|---|---|
| 1 | Bohunice Nuclear Power Plant Slovakia | Nuclear | 880 | — | — |
| 2 | Mochovce Nuclear Power Plant Slovakia | Nuclear | 880 | — | — |
| 3 | Vojany (EVO) Thermal Power Plant Slovakia | Coal | 880 | — | — |
| 4 | Cierny Vah Pumped Storage Hydroelectric Power Plant Slovakia | Hydro | 735 | — | — |
| 5 | Gabcikovo Hydroelectric Power Plant Slovakia | Hydro | 720 | — | — |
| 6 | Novaky (ENO) Thermal CHP Power Plant Slovakia | Coal | 518 | — | — |
| 7 | Malzenice CCGT Power Plant Slovakia | Gas | 430 | — | — |
| 8 | PPC Bratislava CCGT CHP Power Plant Slovakia | Gas | 218 | — | — |
| 9 | Liptovska Mara Pumped Storage Hydroelectric Power Plant Slovakia | Hydro | 198 | — | — |
| 10 | Miskova Hydroelectric Power Plant Slovakia | Hydro | 94 | — | — |
| 11 | Levice CCGT CHP Power Plant Slovakia | Gas | 80 | — | — |
| 12 | Nosice Hydroelectric Power Plant Slovakia | Hydro | 68 | — | — |
| 13 | Ruzin Pumped Storage Hydroelectric Power plant Slovakia | Hydro | 60 | — | — |
| 14 | Povazska Bystrica Hydroelectric Power Plant Slovakia | Hydro | 55 | — | — |
| 15 | Kralova Hydroelectric Power Plant Slovakia | Hydro | 45 | — | — |
Source: WRI Global Power Plant Database v1.3 (CC BY 4.0). Explore all 30 plants on the interactive power plant map.
Solar & wind farms: Slovakia
246 utility-scale facilities tracked by Global Energy Monitor (2026): 890 MW of solar and 0 MW of wind operating, plus 111 MW under construction or planned.
How does Slovakia compare?
Slovakia next to 6 neighbouring countries, plus regional and world averages. Click a column to sort; use “Compare” for full side-by-side charts.
| Country | Renewable % | Low-carbon % | Fossil % | gCO₂/kWh | kWh / person | Generation TWh | Mix | |
|---|---|---|---|---|---|---|---|---|
| Slovakia | 18.7% | 85.2% | 14.8% | 95 | 5,315 | 29.1 | — | |
| Poland | 31.5% | 31.5% | 68.5% | 589 | 4,543 | 173 | Compare | |
| Ukraine | 16.4% | 72.2% | 27.8% | 250 | 2,717 | 112 | Compare | |
| Czechia | 16.8% | 59.2% | 40.8% | 401 | 7,116 | 75.5 | Compare | |
| Austria | 83.6% | 83.6% | 16.4% | 117 | 8,034 | 73.2 | Compare | |
| Hungary | 35.3% | 75.3% | 24.7% | 163 | 4,178 | 40.2 | Compare | |
| Slovenia | 39.6% | 78.9% | 21.1% | 183 | 7,010 | 14.8 | Compare | |
| Europe average | 41.6% | 62% | 38% | 271 | 6,203 | 4,626 | Compare | |
| European Union (EU-27) average | 47.7% | 71.1% | 28.9% | 210 | 6,230 | 2,797 | Compare | |
| World average | 33.8% | 42.6% | 57.4% | 458 | 3,860 | 31,772 | Compare |
Calculators for Slovakia
Slovakia energy: frequently asked questions
What percentage of electricity in Slovakia is renewable?
What is the main source of electricity in Slovakia?
How clean is the electricity in Slovakia?
Does Slovakia use nuclear power?
How much electricity does Slovakia use per person?
How much solar power does Slovakia produce?
Does Slovakia import electricity?
More countries in Europe
Sources & references
- Our World in Data: Energy dataset (CC BY 4.0) — compiled from the sources below
- Ember: Yearly Electricity Data — generation, shares, carbon intensity
- Energy Institute: Statistical Review of World Energy — primary energy, fossil production
- U.S. Energy Information Administration: International Energy Data — gap-filling for smaller countries
- World Resources Institute: Global Power Plant Database v1.3 (CC BY 4.0) — power plant locations and capacity
Electricity data: Ember and Energy Institute Statistical Review via Our World in Data (CC BY 4.0); latest year 2025. Power plants: WRI Global Power Plant Database (CC BY 4.0). Rankings exclude systems under 1 TWh and values older than 2020. Figures may be revised by the original publishers.