France leads globally in nuclear electricity percentage.
Among countries worldwide, France generates the greatest share of its electricity from nuclear power plants, consistently topping charts in recent data. This positions it far ahead of others like Slovakia or Belgium in proportional reliance.

Top Countries by Nuclear Share

France's nuclear output accounts for 67.3% of its total electricity as of 2024 data, the highest percentage recorded.
Slovakia follows at 60.6% , with Belgium at 54.5% and Hungary at 47.1%.
These figures highlight France's unique dependence, driven by decades of policy emphasizing nuclear energy for energy security.

Country| Nuclear Share (2024)| Reactors Operating
---|---|---
France| 67.3%| 57
Slovakia| 60.6%| 5
Belgium| 54.5%| 5
Hungary| 47.1%| 4
Czechia| 40.2%| 6

Why France Dominates

France built its nuclear fleet post-1970s oil crises, aiming for independence from fossil fuels.
By January 2026, this strategy sustains low-carbon power amid global energy transitions.
Unlike the U.S. (18.2% share despite highest total output), France prioritizes nuclear proportionately.

Chapter 15 Context

Textbook questions like this often list options such as France, USA, Japan, or Russia—where France is the clear answer based on percentage, not raw generation.
Recent trends show minor fluctuations, but France holds steady above 65%.

"France gets the largest share of nuclear power, which accounts for about 70.6% of the country’s total electricity."

TL;DR: France generates the greatest percentage (~67%) of its electricity from nuclear power.

Information gathered from public forums or data available on the internet and portrayed here.