Right now, there are about 440 nuclear power reactors operating in 32 countries plus Taiwan.
Together they provide around 10% of the world's electricity.
(Source: World Nuclear Association)
Nuclear is the second largest low-carbon power source - after hydroelectricity.
The U.S. is the largest global nuclear generator for 20% of its electricity needs.
That’s double the size of France, which relies on nuclear for a massive 75% of its power.
And U.S. generation is two-and-a-half times bigger than China, and four times bigger than Russia.
Nuclear demand is rocketing, as countries decommission fossil fuel units and the world attempts to cut its emissions of carbon dioxide.
About 50 power reactors are currently under construction in 16 countries - China, India, Russia and the UAE high on the list.
100 more are either on order or planned, and 300 more have been proposed, after upgrades or lifetime extensions for existing facilities.
By 2040 generating power globally will have increased by more than 30 times.
Nuclear will then produce 8.5% of the world’s electricity, alongside a bigger share for renewables.
Before Fukushima in 2011, Japan got 25% of its electricity from nuclear.
It’s expected to return to somewhere near that level in the near future.