Nuclear Atlas
Weekly digest

Electricity is becoming scarce again. This is the atlas of the source dense enough to answer it.

8.8%of the world's electricity came from nuclear in 2025: 2,812 TWh of 31,772 TWh, from 442 operable reactors in 31 countries.Sources: Our World in Data – Energy dataset (as of 1 Oct 2026); World Nuclear Association reactor database (accessed 9 Oct 2026). Operable = operating plus suspended, PRIS definition.
Explore the mapRead the thesisThe sentence above is the author's view. The number is not.
Operable reactor sites as glowing points, sized by net MWe. Drag to rotate; click a point or a country. Night lights: NASA Black Marble.
Latest
9 Oct 2026Seeing more, repairing smarter: How advanced NDE and repair technologies are changing nuclear asset managementANS Nuclear Newswire9 Oct 2026Fermi America, Blue Energy make strides in TexasANS Nuclear Newswire9 Oct 2026Update 370 – IAEA Director General Statement on Situation in UkraineIAEA Top News9 Oct 2026General Fusion reports electron temperatures exceeding 1 keVANS Nuclear Newswire9 Oct 2026Hydraulic tests completed at Turkey's Akkuyu 1World Nuclear News9 Oct 2026Researchers in Vienna and Beijing report nuclear clock “milestone”ANS Nuclear Newswire9 Oct 2026Latest Terrestrial Energy topical report submission could lead to faster deploymentWorld Nuclear News9 Oct 2026Danish Decommissioning files final repository proposalANS Nuclear Newswire9 Oct 2026IAEA Concludes Long Term Operation Safety Review at Sweden’s Oskarshamn Nuclear Power PlantIAEA Top News9 Oct 2026IAEA Completes International Physical Protection Advisory Service Mission in PakistanIAEA Top News

Reactor map

Every reactor unit on Earth by status, type and size, with a dossier for each country.

442 operable units, 405 GW net, 81 under construction, 53 SMR projectsWorld Nuclear Association reactor database, accessed 9 Oct 2026

Uranium map

Mines, mills, conversion, enrichment and fuel fabrication, and the companies behind them.

60,213 tU mined in 2024; 118 mines and 95 fuel-cycle plants mappedWorld Nuclear Association, world uranium mining production, accessed 6 Oct 2026

The thesis

Scarcity, proportionality and why nuclear. The author's opinion, kept apart from the data and ending with what would change his mind.

Longform with the comparison charts inline. Not yet written.Opinion, not investment advice

Nuclear share of electricity, World, 2000 to 2025

Source: Ember and Energy Institute via Our World in Data (CC BY 4.0 (stated on ember-energy.org/data/yearly-electricity-data/; attribution to Ember required)), as of 1 Oct 2026. Latest year per entity; a missing year is not reported, not zero.

Capacity factor, %

Headline rows: US EIA, Electric Power Annual, Table 4.08.B Capacity factors for utility scale generators primarily using non-fossil fuels; IRENA, Renewable Power Generation Costs in 2024 (July 2025), summary for policy makers; US EIA, Electric Power Annual, Table 4.08.A Capacity factors for utility scale generators primarily using fossil fuels. Dataset read 9 Oct 2026; each row carries its own year, region and definition (hover or open the table). All metrics, every row and the qualitative matrix →

Latest from the data desk

accessed 9 Oct 2026Reactor units832 records · Sources: WNA Reactor Database (IAEA PRIS data; unit owner/operator fields fetched 2026-10-09), GeoNuclearData (PRIS-derived), WNA plans page and Japan profile, US NRC licensee list, Global Energy Monitor wiki and Wikipedia for proposed-site coordinates; IAEA PRIS pages (Power BI) were not readableaccessed 9 Oct 2026SMR projects53 records · Sources: regulators (US NRC, US DOE, CNSC, ONR), developer releases, WNA country profiles and trade press (World Nuclear News, NucNet, ANS, NEI)accessed 9 Oct 2026Uranium mines118 records · Sources: WNA country profiles (Kazakhstan, Canada, Australia, Namibia, Niger, USA, Uzbekistan, Russia, China, Ukraine, India, South Africa and others), the WISE Uranium Project, company technical reports and releases; coordinates from Wikipedia, GeoNames, OpenStreetMap and Wikidataaccessed 9 Oct 2026Fuel-cycle facilities95 records · Sources: WNA fuel-cycle pages (conversion, enrichment, fabrication, reprocessing) and country profiles, the WISE Uranium Project facility list, regulators and operatorsaccessed 1 Oct 2026Country electricity mix and carbon intensity225 records · Sources: Ember Yearly Electricity Data and the Energy Institute Statistical Review, via the Our World in Data energy dataset (pinned commit)accessed 6 Oct 2026Uranium production by country and year238 records · Sources: WNA World Uranium Mining Production tables, 2013 to 2024accessed 9 Oct 2026Uranium spot and term price indicators465 records · Sources: Cameco monthly price indicators (industry average of the UxC and TradeTech month-end prices); UxC and TradeTech public pagesaccessed 9 Oct 2026Deals, restarts, new builds, policy98 records · Sources: primary releases (companies, US DOE, US NRC, SEC EDGAR, Federal Register, GOV.UK, Swiss Parliament, JAIF) and trade press (World Nuclear News, NucNet, ANS Nuclear Newswire), cited per recordaccessed 10 Oct 2026Companies46 records · Sources: stockanalysis.com and Yahoo Finance quote pages; WNA world uranium mining production; company websites, releases and World Nuclear Newsaccessed 9 Oct 2026Energy comparison metrics214 records · Sources: US EIA, IAEA PRIS, Lazard LCOE+, IRENA, IEA/NEA, OECD-NEA, UNECE and IPCC lifecycle data via Our World in Data, NREL, US DOE, WNA and others, cited row by rowaccessed 9 Oct 2026Explainer fact base201 records · Sources: primary pages (IAEA, US NRC, US DOE, EIA, NEA, regulators, operators) and reputable secondary pages (WNA, World Nuclear News, ANS, NucNet), one citation per fact

Research notes

PlannedPounds of U₃O₈ or tonnes of U: what the uranium price actually quotesSupply chain, pricingPlannedWhat it takes to replace one 1 GW reactor with wind, solar and storageEnergy comparisonPlannedWhy enrichment, not mining, is the tightest link in the chainSupply chain, Russia dependence

Weekly digest

A weekly round-up of regulatory, uranium, reactor, company and market items, each with its source, from the time the sending starts. Double opt-in through a confirmation mail; no tracking pixels; an unsubscribe link in every mail.

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