All energy sources have negative effects. But they differ enormously in size: as we will see, in all three aspects, fossil fuels are the dirtiest and most dangerous, while nuclear and modern renewable energy sources are vastly safer and cleaner. //

From the perspective of both human health and climate change, it matters less whether we transition to nuclear power or renewable energy, and more that we stop relying on fossil fuels. //

Let’s consider how many deaths each source would cause for an average town of 187,090 people in Europe, which – as I’ve said before – consume one terawatt-hour of electricity per year. Let’s call this town ‘Euroville’.

If Euroville was completely powered by coal we’d expect 25 people to die prematurely every year as a result. Most of these people would die from air pollution). This is how a coal-powered Euroville would compare with towns powered by other energy sources:

Coal: 25 people would die prematurely every year;
Oil: 18 people would die prematurely every year;
Gas: 3 people would die prematurely every year;
Nuclear: In an average year nobody would die. A death rate of 0.07 deaths per terawatt-hour means it would take 14 years before a single person would die. As we will explore later, this might even be an overestimate.
Wind: In an average year nobody would die – it will take 29 years before someone died;
Hydropower: In an average year nobody would die – it will take 42 years before someone died;
Solar: In an average year nobody would die – only every 53 years before someone would died.