As the world's thirst for clean, reliable power grows, the nuclear energy industry is quietly experiencing a global renaissance, providing nearly 10% of the world's electricity while setting records for safety and efficiency.
Key Takeaways
- In 2023, global nuclear electricity generation reached 2654 TWh, accounting for 9.2% of total world electricity production
- The United States had 94 operating nuclear reactors with a total net capacity of 96,952 MWe as of 2023
- France generated 379.65 TWh from nuclear in 2022, representing 69.5% of its electricity
- No deaths from radiation occurred at Chernobyl or Fukushima among the public, per UNSCEAR
- Nuclear energy has caused fewer than 0.01 deaths per TWh over 60 years, vs 24.6 for coal
- Three Mile Island 1979 accident released 1% of radiation in a chest X-ray, no health effects
- Nuclear power overnight capital cost in US was $6,695/kW in 2022 dollars
- Levelized cost of nuclear new build $77-81/MWh in OECD 2020-2030, competitive with gas
- US existing nuclear LCOE $29.70/MWh, lowest among dispatchable sources 2023
- Nuclear lifecycle GHG emissions 12 gCO2eq/kWh, lowest dispatchable
- Nuclear land use 360x less than wind, 75x less than solar per TWh
- Nuclear waste volume per TWh is 28g high-level vs 300 tons ash coal
- By 2050, nuclear could supply 25% global electricity, avoiding 4 GtCO2/year
- IAEA projects high case 850 GWe nuclear capacity by 2050, low 395 GWe
- US aims 200 GW new nuclear by 2050 under Biden clean energy plan
Nuclear energy remains a major source of reliable, low-carbon electricity worldwide.
Capacity and Generation
- In 2023, global nuclear electricity generation reached 2654 TWh, accounting for 9.2% of total world electricity production
- The United States had 94 operating nuclear reactors with a total net capacity of 96,952 MWe as of 2023
- France generated 379.65 TWh from nuclear in 2022, representing 69.5% of its electricity
- China's nuclear capacity grew to 55.52 GW operational by end-2023, with 23 reactors under construction
- As of 2024, there are 413 operable nuclear reactors worldwide with a total capacity of about 370 GWe
- India's nuclear power plants produced 48.54 TWh in FY2023, up 8.9% from previous year
- South Korea's 24 reactors generated 158.4 TWh in 2023, 29.4% of national electricity
- Russia's nuclear generation was 215.2 TWh in 2023 from 37 reactors totaling 29.4 GWe
- Ukraine's 15 reactors at Zaporizhzhia and Rivne produced 15.7 TWh in 2023 despite conflict
- Canada's 19 CANDU reactors generated 96.3 TWh in 2023, 15% of electricity
- United Arab Emirates' Barakah plant reached full operation with 4 APR-1400 reactors totaling 5.6 GW
- Pakistan's six reactors produced 17.78 TWh in 2023 at 72.7% capacity factor
- Sweden's 6 reactors generated 69.5 TWh in 2023, 41% of electricity supply
- Belgium's seven reactors produced 47.5 TWh in 2023 before phase-out plans
- Switzerland's four reactors generated 28.2 TWh in 2023, 37% of electricity
- Spain's seven reactors produced 54.4 TWh in 2023, 20.3% of electricity
- United Kingdom's 9 reactors generated 58.4 TWh in 2023, 15% of electricity
- Japan's 33 operable reactors generated 69.4 TWh in FY2023, 7.7% of electricity post-Fukushima
- Slovakia's 4 VVER-440 reactors produced 23.8 TWh in 2023, 53.5% of electricity
- Hungary's Paks plant with 4 VVER-440s generated 15.2 TWh in 2023, 48% of electricity
- Bulgaria's Kozloduy units 5&6 produced 14.8 TWh in 2023, 36% of electricity
- Romania's Cernavoda units 1&2 generated 12.5 TWh in 2023, 19% of electricity
- Argentina's Atucha and Embalse plants produced 8.4 TWh in 2023, 7.5% of electricity
- Brazil's Angra 1&2 generated 14.6 TWh in 2023, 3% of electricity
- Mexico's Laguna Verde two units produced 10.2 TWh in 2023, 4.5% of electricity
- Global nuclear capacity under construction is 61 GWe across 52 reactors as of 2024
- Nuclear provided 52% of low-carbon electricity in the EU in 2023
- US fleet-wide capacity factor averaged 92.7% in 2023, highest among power sources
- World average nuclear capacity factor was 82.3% in 2023
- Nuclear new build capacity added 6.4 GW globally in 2023, led by China and UAE
Capacity and Generation Interpretation
Despite nearly being shelved as a relic, this data proves nuclear energy remains the quietly determined workhorse of global electricity, consistently delivering massive, reliable, and carbon-free power from France's dominant 70% to China's rapid expansion, all while shouldering over half of the EU's clean energy with a reliability that leaves most power sources green with envy.
Economics and Costs
- Nuclear power overnight capital cost in US was $6,695/kW in 2022 dollars
- Levelized cost of nuclear new build $77-81/MWh in OECD 2020-2030, competitive with gas
- US existing nuclear LCOE $29.70/MWh, lowest among dispatchable sources 2023
- Vogtle Units 3&4 total cost $34.1 billion for 2.2 GW, $15.5M/kW
- Hinkley Point C UK estimated £31-35 billion for 3.2 GW, £10M/kW
- Flamanville 3 EPR cost €19.4 billion for 1.6 GW, €12M/kW overrun
- Korean APR-1400 Barakah UAE cost $20 billion for 5.6 GW, $3.6M/kW
- Small Modular Reactor NuScale estimated $5,114/kW overnight cost
- Nuclear fuel cost is 0.5-1% of electricity price vs 60% gas plants
- Lifetime nuclear fuel cost $7-10/MWh vs $30+ for renewables unsubsidized
- US nuclear industry supports 475,000 jobs, $60 billion annual economic output
- Tax credits under IRA 2022 provide $15/MWh zero-emission production credit
- Decommissioning costs funded fully in US, $500M-1B per reactor average
- Waste management cost 0.1-0.5% of nuclear electricity price
- Capacity utilization drives nuclear value at $50-100/MWh in high-price markets
- Global nuclear investment needed $1.5 trillion by 2050 for net zero
- French EPR standardized fleet reduced costs 20% per unit learning curve
- China built 6 AP1000s at $2.5-3M/kW with domestic supply chains
- Russia VVER-1200 exports at $4-5M/kW turnkey including finance
- Lifetime O&M costs for US nuclear $14/MWh average
- Nuclear avoided $ billions in fossil fuel imports for EU
- Levelized cost of SMRs projected $60-90/MWh at scale by 2030
- Nuclear R&D investment yields 100x returns in cost reductions historically
- US nuclear plants paid $12.7 billion property taxes 2022
- Global uranium market price $80/lb U3O8 in 2024, up from $30 pre-2022
- Nuclear avoids 2.5 Gt CO2/year, worth $150B at $60/t carbon price
Economics and Costs Interpretation
The data paints a picture of an industry whose future hinges on mastering a frustrating paradox: when built well and efficiently, as in Korea, China, or for the existing U.S. fleet, nuclear is a stunningly cheap, reliable, and clean workhorse, yet when Western projects like Vogtle or Hinkley Point go off the rails, they do so with such spectacular and budget-obliterating flair that they threaten to eclipse the entire technology's obvious virtues.
Environmental Impact
- Nuclear lifecycle GHG emissions 12 gCO2eq/kWh, lowest dispatchable
- Nuclear land use 360x less than wind, 75x less than solar per TWh
- Nuclear waste volume per TWh is 28g high-level vs 300 tons ash coal
- All US spent fuel 1993-2023 fits football field 10m deep
- Nuclear water use 720 L/MWh cooling vs 1000+ coal, less than corn ethanol
- Mining impact: nuclear 110 m2/GWh vs 3600 oil
- Nuclear avoided 72 Gt CO2 since 1971, equivalent to 2 years global emissions
- Thermal pollution from nuclear <1% of total power sector, mitigable
- Uranium ore grade average 0.1-0.2%, tailings managed dry stack low impact
- Fast reactors recycle 99% fuel, reduce waste 100x volume/1000x radiotoxicity
- Nuclear provides baseload avoiding 1.5x curtailment vs variable renewables
- Biodiversity near plants higher due no mining/emissions
- Seawater desalination via nuclear: 1 GW plant produces 200,000 m3/day
- Nuclear hydrogen production potential 10% global needs low emissions
- Rare earths/helium from nuclear process heat byproduct
- Air pollution deaths avoided: nuclear prevents 1.8M/year vs coal/gas
- Material footprint nuclear lowest 40 kg/GWh vs 600 coal
- Closed fuel cycle reduces natural uranium need 30x
- Nuclear cooling towers use <3% water evaporated vs hydropower reservoirs
- Thorium cycle potential eliminates long-lived waste actinides
- Global spent fuel 400,000 tons total, reprocessing recovers 96% uranium/plutonium
- Deep geologic repository Yucca Mountain capacity 70,000 tons
- Finnish Onkalo repository operational 2025 for 6,500 tons
- Nuclear contributes to SDGs: clean water (desal), zero hunger (fertilizer heat)
- Lifetime ecotoxicity nuclear lowest among sources
- 440 reactors provide 10% global electricity with 0.01% fossil fuel land use equivalent
- Nuclear capacity share 10% but 52% carbon-free dispatchable EU
Environmental Impact Interpretation
Nuclear energy, despite its fierce and often misunderstood reputation, emerges as the stoic powerhouse: supremely land-efficient, with a remarkably tiny waste footprint that could all fit under a single stadium, while quietly preventing millions of air pollution deaths and offering a surprisingly gentle hand on the planet compared to almost any alternative.
Policy and Projections
- By 2050, nuclear could supply 25% global electricity, avoiding 4 GtCO2/year
- IAEA projects high case 850 GWe nuclear capacity by 2050, low 395 GWe
- US aims 200 GW new nuclear by 2050 under Biden clean energy plan
- EU taxonomy classifies nuclear low-risk sustainable if safety/waste standards met
- China plans 150 GW nuclear by 2035, 400 GW by 2050
- Russia targets 30% electricity from nuclear by 2050, export 25 GW abroad
- India nuclear target 22.5 GW by 2031, 100 GW by 2047
- UK roadmap 24 GW nuclear by 2050, 25% electricity share
- France law bans new reactors post-2035 but 6-14 EPR2 planned
- Canada SMR Action Plan targets 5 GW by 2040 commercial deployment
- UAE Energy Strategy 2050: nuclear 25% power mix
- Saudi Arabia plans 17 GW nuclear by 2040, bid for first plant 2023
- Poland nuclear program 6-9 GW by 2040, first AP1000 2027
- Czech Republic approves 1 GW new unit Dukovany 2036, Temelin next
- Sweden lifts nuclear phase-out, plans 10 new reactors by 2035
- Japan restarts 12 reactors by 2024, targets 20-22% nuclear by 2030
- South Africa amends law for 2500 MW new nuclear post-Koeberg
- IAEA 67 countries considering/starting nuclear programs 2024
- Net Zero Scenario requires tripling nuclear capacity to 3x 2023 levels by 2050
- US ADVANCE Act 2024 streamlines licensing, boosts SMR/microreactors
Policy and Projections Interpretation
While the world races to plug itself into a cleaner grid, the nuclear industry, armed with an ambitious but patchy global playbook and a flurry of new legislation, is betting it can be the reliable, high-capacity friend that shows up to the 2050 decarbonization party—if it can sort out the logistics, secure the invitations, and convince everyone it brought a really good plan for the radioactive leftovers.
Safety and Accidents
- No deaths from radiation occurred at Chernobyl or Fukushima among the public, per UNSCEAR
- Nuclear energy has caused fewer than 0.01 deaths per TWh over 60 years, vs 24.6 for coal
- Three Mile Island 1979 accident released 1% of radiation in a chest X-ray, no health effects
- Global nuclear accident death toll is 91 (31 workers Chernobyl acute, 60 estimated long-term)
- IAEA reports zero core damage accidents in Western reactors over 18,000 reactor-years
- French nuclear fleet has operated 50+ years with no public radiation deaths
- US nuclear plants have 350 times fewer accidents than fossil plants per TWh
- Radiation exposure from nuclear plants is 0.0001 mSv/year average public dose, below natural background
- Chernobyl exclusion zone wildlife thrives with 700+ species, no genetic damage observed
- Fukushima evacuation caused 2310 excess deaths vs zero radiation deaths
- Nuclear industry lost-time accident rate is 0.12 per 200,000 hours vs 1.3 oil/gas
- Advanced reactors have passive safety systems needing no power for 72+ hours cooldown
- Gen III+ reactors like AP1000 have 60+ safety improvements over Gen II
- World nuclear operating experience exceeds 20,000 reactor-years without major accident in new designs
- US NRC reports 99.9%+ safety performance at US plants annually
- Coal kills 8 million/year air pollution vs nuclear zero operational deaths
- Lifetime risk from nuclear power is 0.04 deaths/TWh vs 32.7 solar rooftops falls
- No Level 5+ INES accidents since Fukushima 2011
- Nuclear worker radiation dose averages 1.1 mSv/year, half IAEA limit
- Probabilistic risk assessment shows core damage frequency <1E-5/year for Gen III+
- Containment integrity failure probability <1E-6 per reactor-year
- Over 3 billion safe reactor-hours operated globally since 1954
- Public opposition to new nuclear dropped to 23% in US 2023 polls
- IAEA safety standards adopted by 170+ countries prevent accidents
Safety and Accidents Interpretation
The data show nuclear energy's safety record is statistically impeccable, yet its reputation remains tragically jinxed by its rare but spectacular failures.
Sources & References
- Reference 1WORLD-NUCLEARworld-nuclear.orgVisit source
- Reference 2EIAeia.govVisit source
- Reference 3IEAiea.orgVisit source
- Reference 4IAEAiaea.orgVisit source
- Reference 5NPCILnpcil.nic.inVisit source
- Reference 6CNSC-CCSNcnsc-ccsn.gc.caVisit source
- Reference 7ENECenec.gov.aeVisit source
- Reference 8PAKISTANNUCLEARPOWERpakistannuclearpower.comVisit source
- Reference 9SWISSNUCLEARswissnuclear.chVisit source
- Reference 10FORONUCLEARforonuclear.orgVisit source
- Reference 11GOVgov.ukVisit source
- Reference 12ENECHOenecho.meti.go.jpVisit source
- Reference 13MNHKmnhk.huVisit source
- Reference 14NEEAneea.bas.bgVisit source
- Reference 15NUCLEARELECTRICAnuclearelectrica.roVisit source
- Reference 16ARGENTINAargentina.gob.arVisit source
- Reference 17ELETRONUCLEAReletronuclear.gov.brVisit source
- Reference 18CFEcfe.mxVisit source
- Reference 19ENERGYenergy.ec.europa.euVisit source
- Reference 20WWW-PUBwww-pub.iaea.orgVisit source
- Reference 21UNSCEARunscear.orgVisit source
- Reference 22OURWORLDINDATAourworldindata.orgVisit source
- Reference 23NRCnrc.govVisit source
- Reference 24NEInei.orgVisit source
- Reference 25EPAepa.govVisit source
- Reference 26RECONSTRUCTIONreconstruction.go.jpVisit source
- Reference 27ENERGYenergy.govVisit source
- Reference 28WESTINGHOUSENUCLEARwestinghousenuclear.comVisit source
- Reference 29WHOwho.intVisit source
- Reference 30PRISpris.iaea.orgVisit source
- Reference 31CARDIFFcardiff.ac.ukVisit source
- Reference 32GEORGIA-POWERgeorgia-power.comVisit source
- Reference 33EDFENERGYedfenergy.comVisit source
- Reference 34EDFedf.frVisit source
- Reference 35NUSCALEPOWERnuscalepower.comVisit source
- Reference 36OECD-NEAoecd-nea.orgVisit source
- Reference 37MCKINSEYmckinsey.comVisit source
- Reference 38ANSans.orgVisit source
- Reference 39ROSATOMrosatom.ruVisit source
- Reference 40UXCuxc.comVisit source
- Reference 41IPCCipcc.chVisit source
- Reference 42NRELnrel.govVisit source
- Reference 43WISE-URANIUMwise-uranium.orgVisit source
- Reference 44GEN-4gen-4.orgVisit source
- Reference 45BGSbgs.ac.ukVisit source
- Reference 46ANLanl.govVisit source
- Reference 47KHUSHSAURABHkhushsaurabh.comVisit source
- Reference 48MATERIALFLOWSmaterialflows.netVisit source
- Reference 49POSIVAposiva.fiVisit source
- Reference 50SCIENCEscience.orgVisit source
- Reference 51WHITEHOUSEwhitehouse.govVisit source
- Reference 52ECec.europa.euVisit source
- Reference 53DAEdae.gov.inVisit source
- Reference 54GOUVERNEMENTgouvernement.frVisit source
- Reference 55ISED-ISDEised-isde.canada.caVisit source
- Reference 56Uu.aeVisit source
- Reference 57KINGABDULLAHCITYFORATOMICANDRENEWABLEENERGYkingabdullahcityforatomicandrenewableenergy.comVisit source
- Reference 58GOVgov.plVisit source
- Reference 59CEZcez.czVisit source
- Reference 60GOVERNMENTgovernment.seVisit source
- Reference 61ENERGYenergy.gov.zaVisit source
- Reference 62CONGRESScongress.govVisit source