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9% of global electricity is generated from Nuclear

9.09 % Share of global electricity
12 gCO2eq/kWh Carbon Intensity

Nuclear energy is a form of low-carbon, clean, and sustainable energy that harnesses the power generated through nuclear reactions, specifically fission. In a nuclear reaction, the nucleus of an atom splits into smaller parts, releasing a tremendous amount of energy in the form of heat. This heat can then be used to generate electricity, making nuclear power a key player in reducing greenhouse gas emissions and combating climate change. In terms of carbon intensity, nuclear energy is remarkably efficient with an average carbon intensity of just 12 gCO2eq/kWh, placing it among the lowest alongside other clean technologies like wind (11 gCO2eq/kWh) and solar (45 gCO2eq/kWh).

To generate electricity, a nuclear power plant employs a process wherein the heat produced during nuclear fission is used to convert water into steam. This steam drives a turbine connected to a generator, which then produces electricity. The primary fuel used in these reactors is uranium, which undergoes controlled fission. The design of nuclear reactors ensures high safety standards, with numerous backup systems to prevent malfunctions. Nuclear power plants can continuously generate large amounts of electricity without the variability issues inherent in some other forms of green energy, like solar and wind.

One of the significant advantages of nuclear energy is its exceptionally low carbon intensity. When compared to coal (820 gCO2eq/kWh) and natural gas (490 gCO2eq/kWh), it is evident that nuclear power is an effective solution for drastically reducing carbon footprints. Alongside wind and solar, nuclear energy stands out as a robust low-carbon technology that can substantially mitigate the adverse impacts of fossil fuel consumption, such as air pollution and climate change.

Nuclear power already makes a significant contribution to the global electricity supply, generating approximately 9% of all electricity consumed worldwide. This highlights its relevance and reliability as a clean energy source. Several countries have successfully leveraged nuclear power to meet a substantial portion of their electricity needs: Finland gets about 41%, France more than 65%, Sweden close to 30%, South Korea about 29%, and Slovakia around 62% of their electricity from nuclear power. These examples illustrate the potential of nuclear energy to deliver large-scale, low-carbon electricity, thereby aiding nations in their quest for green and sustainable development.

In addition to helping reduce greenhouse gas emissions, nuclear power provides a stable and reliable energy supply. Unlike wind and solar, which can be intermittent, nuclear plants operate continuously, providing a consistent electricity output. This reliability makes nuclear power an integral part of the energy mix, particularly in regions that require a steady and substantial electricity supply. The capability to produce vast amounts of electricity while maintaining minimal environmental impact makes nuclear energy an indispensable component of a sustainable future.

Country/Region Watts / person % TWh
Finland 699.5 W 41.5% 33.9 TWh
France 593.8 W 65.3% 335.6 TWh
Sweden 527.9 W 29.1% 48.4 TWh
South Korea 397.5 W 29.4% 180.5 TWh
Slovakia 384.3 W 61.9% 18.3 TWh
Czechia 330.2 W 39.9% 30.4 TWh
Belgium 328.6 W 39.8% 33.4 TWh
Switzerland 317.7 W 34.0% 24.2 TWh
Slovenia 303.8 W 37.1% 5.6 TWh
Bulgaria 267.9 W 40.4% 16.2 TWh
Canada 266.0 W 14.0% 88.9 TWh
United States 262.6 W 18.2% 775.4 TWh
United Arab Emirates 245.1 W 13.0% 20.1 TWh
Hungary 187.2 W 33.9% 15.9 TWh
Russia 171.1 W 18.5% 217.5 TWh
Ukraine 162.8 W 55.1% 62.1 TWh
EU 158.7 W 22.8% 618.6 TWh
Spain 136.5 W 21.1% 56.8 TWh
Armenia 107.6 W 30.0% 2.6 TWh
Republic of China (Taiwan) 85.2 W 6.3% 17.8 TWh
Japan 70.9 W 7.6% 77.4 TWh
United Kingdom 70.1 W 13.0% 41.3 TWh
Romania 66.0 W 19.9% 11.2 TWh
Belarus 55.8 W 12.1% 4.7 TWh
The World 38.7 W 9.1% 2677.9 TWh
People's Republic of China 34.8 W 4.6% 434.7 TWh
Netherlands 26.1 W 3.3% 4.0 TWh
Argentina 22.6 W 5.4% 8.9 TWh
South Africa 15.7 W 3.6% 8.2 TWh
Germany 12.0 W 1.7% 8.8 TWh
Mexico 11.1 W 3.5% 12.3 TWh
Pakistan 11.1 W 13.9% 22.4 TWh
Iran 8.5 W 1.8% 6.6 TWh
Brazil 7.7 W 2.0% 14.5 TWh
India 3.9 W 2.4% 48.2 TWh
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