Slovenia's electricity production from nuclear sources (% of total) was 38.85% in 2025, the latest year in the World Bank's World Development Indicators. That is up 1.45 percentage points from 37.4% in 2015.
Key figures
| Value | Year | |
|---|---|---|
| Latest | 38.85% | 2025 |
| Five years earlier | 36.95% | 2020 |
| Ten years earlier | 37.4% | 2015 |
| Highest | 41.16% | 2022 |
| Lowest | 32.17% | 1992 |
| Average since 2016 | 36.72% | 2016–2025 |
| First recorded | 37.14% | 1990 |
What the numbers say
In 2025, Slovenia's electricity production from nuclear sources (% of total) rose 4.51 percentage points on 2024 (from 34.34% to 38.85%).
Across the 30 yearly changes before that (1995 to 2024), the average change was −0.05 percentage points and a typical year strayed about 2.6 percentage points from that (the standard deviation). This year's change was 1.8 standard deviations above that average, so it was larger than a typical year, though not out of the range seen before.
On record, the biggest yearly rise was 5.23 percentage points in 2022 and the biggest yearly fall was 6.69 percentage points in 1992. The numbers show how large and when, not why; for the cause, look at what happened in that country in those years.
From 2016 to 2025 there is no clear straight-line trend: a straight line explains 4% of the movement over 10 observed years, so the value is moving around more than it is heading anywhere.
Worked out from the yearly values above. How the checks work: standard deviation, z-scores and straight-line trends.
How it compares
In 2025, Slovenia had the 6th highest value of the 19 economies reporting that year. Higher is not always better: for some indicators the lowest value is the one to aim for. See the full ranking.
| Value | Year | |
|---|---|---|
| Slovenia | 38.85% | 2025 |
| World | 15.16% | 2025 |
| Europe & Central Asia | 18.62% | 2025 |
| High income | 17.31% | 2025 |
Closest to Slovenia in the 2025 ranking
- Czechia — 3rd of 19: 41.99%
- Hungary — 4th of 19: 40.53%
- Finland — 5th of 19: 39.73%
- Belgium — 7th of 19: 32.63%
- Korea, Rep. — 8th of 19: 28.72%
- Switzerland — 9th of 19: 27.83%
What this measures
The share of electricity production from nuclear sources of total electricity production. Sources of electricity refer to the inputs used to generate electricity. Nuclear power refers to electricity produced by nuclear power plants.
Limitations: IEA occasionally revises its time series to reflect political changes. For example, the IEA has constructed historical energy statistics for countries of the former Soviet Union. In addition, energy statistics for other countries have undergone continuous changes in coverage or methodology in recent years as more detailed energy accounts have become available. Breaks in series are therefore unavoidable.
Regional and income-group figures are computed by the World Bank as a weighted average using total electricity production as weights.
All 36 values
| Year | Electricity production from nuclear sources (% of total) |
|---|---|
| 2025 | 38.85 |
| 2024 | 34.34 |
| 2023 | 35.29 |
| 2022 | 41.16 |
| 2021 | 35.93 |
| 2020 | 36.95 |
| 2019 | 36.16 |
| 2018 | 35.38 |
| 2017 | 38.5 |
| 2016 | 34.64 |
| 2015 |
Electricity production from nuclear sources (% of total) in nearby economies
- Albania — 0% (2021)
- Andorra — 0% (2021)
- Armenia — 30.14% (2024)
- Austria — 0% (2021)
- Azerbaijan — 0% (2021)
- Belarus — 35.84% (2024)
- Belgium — 32.63% (2025)
- Bosnia and Herzegovina — 0% (2021)
- Bulgaria — 40.94% (2024)
More environment data for Slovenia
- Rural population — 937,832 (2025)
- Rural population (% of total population) — 44.01% (2025)
- Urban population — 1.19 million (2025)
- Urban population (% of total population) — 55.99% (2025)
- Rural population growth (annual %) — -0.36% (2025)
- Urban population growth (annual %) — 0.59% (2025)
- Agricultural land (sq. km) — 6,114 (2024)
- Surface area (sq. km) — 20,480 (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e) — 17.34 (2024)
- Total greenhouse gas emissions per capita excluding LULUCF (t CO2e/capita)
Reading data like this
Questions people ask
- What is Slovenia's electricity production from nuclear sources (% of total)?
- 38.85% in 2025, according to the World Bank (World Development Indicators).
- How has it changed since 1990?
- It is up 1.71 percentage points from 37.14% in 1990. The highest value was 41.16% in 2022 and the lowest 32.17% in 1992.
- How does Slovenia rank?
- 6th highest of 19 economies with data for 2025.
- Is the latest change in electricity production from nuclear sources (% of total) unusual for Slovenia?
- In 2025, Slovenia's electricity production from nuclear sources (% of total) rose 4.51 percentage points on 2024 (from 34.34% to 38.85%). Across the 30 yearly changes before that (1995 to 2024), the average change was −0.05 percentage points and a typical year strayed about 2.6 percentage points from that (the standard deviation). This year's change was 1.8 standard deviations above that average, so it was larger than a typical year, though not out of the range seen before.
Source
World Bank, World Development Indicators, indicator EG.ELC.NUCL.ZS, licensed CC BY 4.0. Original source: IEA Energy Statistics Data Browser, International Energy Agency (IEA), uri: https://www.iea.org/data-and-statistics/data-tools/energy-statistics-data-browser, publisher: International Energy Agency (IEA), date accessed: 2025-03-25 Figures are fetched from the World Bank API and refreshed monthly; see the series on data.worldbank.org. The full definition and method are in the World Bank's metadata glossary. Comparisons use the same World Bank release.
Want to ask your own questions of data like this? Try AnalyzeIt: upload a file or ask about public data in plain words, and every figure comes with its working.
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