Bulgaria vs Slovenia: Share of primary energy from nuclear
Bulgaria
24.0%
in 2025
Slovenia
25.7%
in 2025
Bulgaria rank
7th
Slovenia rank
5th
Share of primary energy from nuclear over time
- Bulgaria
- Slovenia
How they compare
Slovenia currently reports 25.7% against 24.0% in Bulgaria, a difference of 1.7%.
That makes Slovenia's figure about 1.1 times Bulgaria's.
The two have swapped places 10 times across 36 shared years of data; in 1990 it was Slovenia ahead.
Bulgaria ranks 7th and Slovenia ranks 5th of 215 countries.
Across the 4 decades both report, Bulgaria averaged higher in 1 and Slovenia in 3.
Head to head by decade
| Decade | Bulgaria | Slovenia | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 18.2% | 20.6% | 2.4% | Slovenia |
| 2000s | 23.9% | 21.2% | 2.7% | Bulgaria |
| 2010s | 22.6% | 23.3% | 0.7% | Slovenia |
| 2020s | 24.3% | 25.4% | 1.1% | Slovenia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of primary energy from nuclear, Bulgaria or Slovenia?
- Slovenia, at 25.7% against 24.0% in Bulgaria as of 2025.
- What is the difference in share of primary energy from nuclear between Bulgaria and Slovenia?
- 1.7%, with Slovenia ahead.
- How many years of comparable data are there for Bulgaria and Slovenia?
- 36 years are reported by both, from 1990 to 2025.
- How do Bulgaria and Slovenia rank globally for share of primary energy from nuclear?
- Bulgaria ranks 7th and Slovenia ranks 5th of 215 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data, published as Share of primary energy from nuclear. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Measured as a percentage of total energy supply.