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9% of global electricity is generated from Nuclear

9.15 % Share of global electricity
12 gCO2eq/kWh Carbon Intensity

Nuclear energy is a potent form of energy harnessed from the minute core of an atom. Nuclear reactions are carried out, such as fission where an atom's nucleus is split, or fusion where atomic nuclei combine. These complex reactions release substantial amounts of energy, resulting in the generation of heat. The energy source is highly concentrated, meaning a small amount of nuclear material can generate large amounts of energy. It is a part of the family of low-carbon energy sources, along with wind and solar, which are widely known for their sustainability and lesser impact on the environment.

To produce electricity from nuclear energy, power plants utilize the heat generated from nuclear reactions to heat water, creating steam. The steam is then directed to spin a turbine, which in turn drives a generator that produces electricity. This process is similar to other means of electricity production such as coal and gas, but nuclear power plants do not burn any fossil fuels and subsequently do not release CO2 during operation, hence significantly cutting down the carbon emissions.

Among the strongest advantages of nuclear energy is its low-carbon intensity. With an average carbon intensity of 12 gCO2eq/kWh, it sits at the lower end of the scale when compared to other energy sources. This means that nuclear energy production results in significantly lower CO2 emissions when compared to fossil fuels like coal and gas, which have much higher carbon intensities. This low carbon intensity makes nuclear energy a stellar choice for an environmentally sustainable future, fighting against climate change and reducing air pollution.

Nuclear energy holds a significant share in the global electricity generation mix. Nearly 10% of the world's electricity is produced from nuclear energy. A sizable chunk of electricity in many countries also comes from nuclear energy, a testament to its efficiency and reliability. In France, for instance, nuclear energy accounts for an astounding 61% of the country's electricity generation.

Not only France, but other nations also benefit significantly from nuclear energy. In Sweden, nearly a third of the electricity is generated from nuclear energy, while in Finland and South Korea, almost 30% of electricity comes from nuclear. Moreover, in Belgium, nearly half of the electricity is supplied by nuclear power. The substantial share of nuclear power in these countries' energy mix underscores its critical role in delivering electricity to millions of people.

Bear in mind, nuclear power is not the only low-carbon technology source. Wind and solar energy sources also have their advantages in the fight against climate change. Wind energy has the lowest carbon intensity, emitting 11 gCO2eq/kWh, closely followed by nuclear and solar energy. The combined strength of nuclear, wind, and solar energy can accelerate our transition towards a green and sustainable energy future.

Country/Region Watts / person % TWh
Sweden 558.6 W 29.8% 51.2 TWh
France 525.7 W 61.4% 297.2 TWh
Finland 516.8 W 29.3% 25.1 TWh
Belgium 433.9 W 46.7% 44.1 TWh
South Korea 371.3 W 27.8% 168.6 TWh
Czechia 336.6 W 36.4% 31.0 TWh
Slovakia 333.2 W 56.9% 15.9 TWh
Switzerland 302.2 W 35.3% 23.0 TWh
Slovenia 301.1 W 38.4% 5.6 TWh
Bulgaria 272.9 W 32.5% 16.5 TWh
United States 261.4 W 17.8% 771.5 TWh
Canada 246.2 W 12.9% 82.3 TWh
Hungary 186.3 W 33.3% 15.8 TWh
Russia 178.1 W 20.3% 226.4 TWh
Ukraine 170.4 W 58.1% 65.0 TWh
EU 157.2 W 21.8% 612.8 TWh
Spain 140.5 W 20.5% 58.4 TWh
United Arab Emirates 128.5 W 7.6% 10.5 TWh
Republic of China (Taiwan) 114.1 W 8.2% 23.8 TWh
United Kingdom 81.7 W 14.8% 48.2 TWh
Armenia 75.7 W 25.3% 1.9 TWh
Belarus 68.9 W 13.2% 5.8 TWh
Romania 66.6 W 19.6% 11.3 TWh
Germany 50.0 W 6.3% 36.5 TWh
Japan 47.4 W 5.4% 51.8 TWh
The World 37.7 W 9.2% 2610.3 TWh
People's Republic of China 33.4 W 4.7% 417.8 TWh
Netherlands 27.0 W 3.4% 4.1 TWh
South Africa 19.4 W 4.7% 10.1 TWh
Argentina 18.8 W 4.8% 7.5 TWh
Pakistan 11.1 W 14.7% 22.4 TWh
Mexico 9.3 W 2.9% 10.4 TWh
Brazil 7.7 W 2.1% 14.5 TWh
Iran 4.6 W 1.0% 3.5 TWh
India 3.8 W 2.5% 46.3 TWh