As of early 2025, there are 411 operational nuclear power reactors in 31 countries, collectively contributing about 9% of global electricity. This article details their global distribution, key contributors, and the future outlook of nuclear power expansion.
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How Many Nuclear Power Stations in the World?
As of early 2025, there are approximately 411 operational nuclear power reactors worldwide, spanning across 31 countries. These reactors collectively contribute to about 9% of the global electricity supply, underscoring their significance in the global energy mix.
Global Distribution of Nuclear Power Reactors
United States: 94 reactors, 800+ TWh annually, ~19% of national electricity.
France: 57 reactors, 65% of electricity supply.
China: 58 reactors, ~5% of electricity supply.
Russia: 36 reactors, ~18% of electricity.
South Korea: 24 reactors, ~30% of electricity.
Canada: 19 reactors, ~15% of electricity.
Ukraine: 15 reactors, over 50% of electricity.
United Kingdom: 9 reactors, ~15% of electricity.
India: 21 reactors, ~3% of electricity.
Japan: 9 reactors, ~7% of electricity.
Reactors Under Construction
In addition to the operational reactors, there are 66 nuclear reactors under construction globally, aiming to add a combined capacity of approximately 61.6 gigawatts (GW).
China: Leads with 30 reactors under construction, reflecting its commitment to expanding nuclear capacity.
India: Has 6 reactors being built to meet its growing energy demands.
Russia: Is constructing 7 reactors, both domestically and internationally.
Egypt: Is building its first nuclear power plant, the El Dabaa Nuclear Power Plant, comprising four VVER-1200 reactors, each with a capacity of 1,200 MW.
Bangladesh: Is constructing the Rooppur Nuclear Power Plant, its inaugural nuclear facility, featuring two VVER-1200 reactors.
Future Outlook
The global nuclear energy landscape is poised for growth, with several countries planning to expand their nuclear capabilities. Factors driving this expansion include the need for low-carbon energy sources, energy security concerns, and advancements in nuclear technology. However, challenges such as high capital costs, waste management, and public perception continue to influence the pace and scale of nuclear energy adoption.
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