Slovakia Electricity Mix
Slovakia generated 18.7% of its electricity from renewable sources in 2025, below the world average of 33.8%. Each kilowatt-hour produced emitted about 95 grams of CO₂.
Data year 2025 · Source: Ember and Energy Institute via Our World in Data
How much electricity in Slovakia comes from renewables?
Renewable sources produced 18.7% of the electricity generated in Slovakia in 2025. The world average was 33.8% in 2025. That is up from 15.0% in 2000. That ranks Slovakia 133rd of 210 countries and territories by renewable share.
Electricity mix by source
Nuclear is the largest source of electricity in Slovakia, at 66.4% of generation, followed by gas at 11.3% and hydro at 10.9%. Fossil fuels together supplied 14.8% and nuclear 66.4%.
Carbon intensity of electricity
Generating one kilowatt-hour of electricity in Slovakia emitted about 95 grams of CO₂ in 2025, 79% below the world average of 458 g. At that rate, a business using 10,000 kWh a year would be responsible for roughly 949 kg of CO₂ from electricity.
This is an estimate based on the generation mix. For a formal carbon report, use the grid factor published by the national energy or environment agency. Our guide to emission factors explains the difference.
How Slovakia compares
Countries closest to Slovakia when ranked by renewable share of electricity. See the full ranking, or the CO₂ emissions of Slovakia.
| # | Country | Renewables | Low-carbon | g CO₂/kWh |
|---|---|---|---|---|
| 131 | Mali | 19.5% | 19.5% | 539 |
| 132 | Uzbekistan | 19.4% | 19.4% | 1000 |
| 133 | Slovakia | 18.7% | 85.2% | 95 |
| 134 | Haiti | 18.6% | 18.6% | 535 |
| 135 | Indonesia | 18.1% | 18.1% | 680 |
Frequently asked questions
What share of electricity in Slovakia is renewable?
18.7% in 2025. That is up from 15.0% in 2000. Counting nuclear as well, 85.2% of electricity came from low-carbon sources.
What is the main source of electricity in Slovakia?
Nuclear is the largest source of electricity in Slovakia, at 66.4% of generation, followed by gas at 11.3% and hydro at 10.9%.
How clean is electricity in Slovakia?
Generating one kilowatt-hour emitted about 95 grams of CO₂ in 2025, 79% below the world average of 458 g.
Is renewable electricity growing in Slovakia?
The renewable share has risen by 3.8 percentage points, from 15.0% in 2000 to 18.7% in 2025.
About the data. Shares are percentages of the electricity generated inside the country in a year. Renewables are hydro, wind, solar, bioenergy and other renewable sources. Low-carbon adds nuclear. The latest year differs between countries and is shown on each page. Carbon intensity is an estimate of the CO₂ emitted per kilowatt-hour generated, including emissions over the life of each power source.
Source: Ember and the Energy Institute Statistical Review of World Energy, processed by Our World in Data and used under the CC BY 4.0 licence.
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