CIS (EI) vs Finland: Share of primary energy from nuclear
CIS (EI)
6.4%
in 2025
Finland
33.5%
in 2025
CIS (EI) rank
2nd
Finland rank
2nd
Share of primary energy from nuclear over time
- CIS (EI)
- Finland
How they compare
Finland currently reports 33.5% against 6.4% in CIS (EI), a difference of 27.1%.
That makes Finland's figure about 5.2 times CIS (EI)'s.
The two have swapped places 1 time across 61 shared years of data; in 1965 it was CIS (EI) ahead.
CIS (EI) ranks 2nd and Finland ranks 2nd of 3 groups.
Across the 7 decades both report, CIS (EI) averaged higher in 1 and Finland in 6.
Head to head by decade
| Decade | CIS (EI) | Finland | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.1% | 0.0% | 0.1% | CIS (EI) |
| 1970s | 0.7% | 1.6% | 0.9% | Finland |
| 1980s | 2.7% | 19.8% | 17.2% | Finland |
| 1990s | 3.5% | 19.1% | 15.6% | Finland |
| 2000s | 5.1% | 19.5% | 14.4% | Finland |
| 2010s | 5.8% | 21.9% | 16.2% | Finland |
| 2020s | 6.4% | 29.4% | 23.0% | Finland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of primary energy from nuclear, CIS (EI) or Finland?
- Finland, at 33.5% against 6.4% in CIS (EI) as of 2025.
- What is the difference in share of primary energy from nuclear between CIS (EI) and Finland?
- 27.1%, with Finland ahead.
- How many years of comparable data are there for CIS (EI) and Finland?
- 61 years are reported by both, from 1965 to 2025.
- How do CIS (EI) and Finland rank globally for share of primary energy from nuclear?
- CIS (EI) ranks 2nd and Finland ranks 2nd of 3 groups.
- 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.