Nuclear Power Plants Worldwide: An Interactive Global Map
Nuclear energy remains one of the most consequential and closely watched elements of the global energy infrastructure. With approximately 440 operational nuclear reactors across 32 countries, nuclear power generates about 10% of the world's electricity. Understanding where these facilities are located — and their operational status — is essential for energy analysts, environmental researchers, and geopolitical risk professionals.
The Global Nuclear Landscape
Nuclear power is unevenly distributed around the world. A handful of countries operate the vast majority of reactors:
- United States — 93 operational reactors, the largest nuclear fleet in the world, generating about 20% of U.S. electricity.
- France — 56 reactors providing roughly 70% of the country's electricity, the highest nuclear share of any major economy.
- China — 55 operational reactors with over 20 under construction, the fastest-growing nuclear program globally.
- Russia — 37 reactors, with additional units under construction domestically and exported through Rosatom to countries like Egypt, Turkey, and Bangladesh.
- Japan — 33 reactors, many of which were shut down after the 2011 Fukushima disaster and are gradually being restarted.
- South Korea — 26 reactors, a major nuclear exporter that won the contract to build the UAE's Barakah plant.
Aging Infrastructure Concerns
The average age of the world's nuclear fleet is over 30 years. Many reactors built in the 1970s and 1980s are approaching or exceeding their original 40-year design lifespans. While license extensions to 60 or even 80 years are being granted in some countries, aging infrastructure raises legitimate safety and reliability concerns:
- Embrittlement of reactor pressure vessels from decades of neutron bombardment
- Degradation of concrete containment structures
- Outdated control systems and instrumentation
- Increasing maintenance costs that affect economic viability
Conversely, newer reactor designs — including small modular reactors (SMRs) and Generation IV concepts — promise enhanced safety features and reduced waste, though few have reached commercial deployment.
Nuclear Data Sources
Mapping nuclear facilities globally requires aggregating data from multiple sources. The International Atomic Energy Agency (IAEA) maintains the Power Reactor Information System (PRIS), which tracks operational, under construction, and decommissioned reactors. Wikidata provides structured, community-maintained records of nuclear facilities with geographic coordinates, operational status, and capacity data. These open datasets make it possible to build comprehensive nuclear maps without requiring classified information — a core principle of OSINT methodology.
Gridline's Nuclear Facilities Layer
Gridline includes a nuclear facilities layer that plots power plants, research reactors, and related infrastructure on an interactive map. Each facility marker includes details such as reactor type, capacity, operational status, and commissioning date. Users can combine the nuclear layer with other Gridline overlays — including conflict zones, GPS jamming areas, and seismic activity — to assess risks to nuclear infrastructure from both natural disasters and armed conflict.
In an era of energy transition, nuclear proliferation concerns, and climate-driven policy shifts, having an up-to-date map of the world's nuclear facilities is not just useful — it is essential for anyone involved in energy security or geopolitical analysis.