Ranked: Countries Building the Most Nuclear Reactors

By Bruno Venditti – Visual Capitalist

China is in the middle of the largest nuclear construction push in the world.

Dozens of reactors are rising across the country, representing nearly 43 gigawatts of new generating capacity. That buildout alone exceeds what every other nation currently has under construction combined.

This chart breaks down which countries are expanding nuclear power in 2025, and below we also cover how much power they are adding to their grids.