Changelog

What has been added to the site itself, newest first. For what changed in the reactor world this week, see this week. Atom feed.

4 Nov 2026

Each plant page now lists every unit in a "Unit by unit" section, with type, size, fuel, owners, key dates and corrections. Separate pages for individual units that duplicated the plant page now redirect to it; units with live outage or licensing data keep their own page. The per-unit JSON is unchanged

3 Nov 2026

Country pages now open with a sourced note on the country's current nuclear policy (phase-outs, new-build programmes, lifetime extensions), each with the page it was read from and the date
Follow one country: /api/alerts.xml?country=france gives an Atom feed of outages and large earthquakes near that country's plants, linked from every country page
Reactor pages now say where the unit's fuel family stands in its own country: how many units use it, how many fabricators are documented, and whether any is based there
/data/nuclear-share.csv: the nuclear share of electricity by year for the world and 36 countries

28 Oct 2026

/nuclear-share/: every country's share of electricity from nuclear power since 1985, with the ten-year change and each country's peak. Country pages now draw the same history, and the share on the compare page is filled in for the first time
/fuel/map/: every mine, conversion, enrichment, fabrication, reprocessing and storage site on a map that zooms and pans, with a stage filter and a summary panel
/compare/ now compares single reactors as well as plants and countries
/japan/ now says when each of the four units the regulator lists as suspended, but our record calls operating, first restarted after 2011
Four more records corrected with IAEA dates: Palisades 1, Monju, Lucens and Saxton had placeholder commercial-operation or shutdown dates

23 Oct 2026

Google AdSense can now show ads, but only for visitors who choose Accept all. The ads script is never requested for anyone who chooses Accept required, and ads never load on the 404 page or in the framed embeds. The consent prompt and the privacy page say so

22 Oct 2026

/data/changes/: every correction to the source data with its source, and a record of what changes between data refreshes, with an Atom feed
Eight more records corrected from a consistency review (commercial-operation dates, net and gross capacity), each with its source
The map on /reactors/ can now show planned, mothballed and retired units as extra layers (switched off by default), and pin sizes follow the units currently shown
/japan/: which of Japan's reactors are running, suspended or being decommissioned, from the regulator's own list, set against our fleet record
Every build now checks the reactor records for impossible combinations, such as a commercial-operation date before the grid connection, so a bad record in a data refresh fails the build
The world map on the home page and /reactors/ now zooms and pans, and selecting a site opens a summary panel with its units and a link to the plant page
The map now has a search box (find a plant or a country and the map zooms to it), filters for status and reactor type, a colour-by-type option and a live count of what is shown
Company pages now show each company's share and rank at every fuel-chain stage it works in, its facility footprint, and its reactor-vendor installed base, all computed from the cited figures
Corrected the reactor type or model of Sizewell C, Southern Ohio Clean Energy Park and Amarillo, each with its source on the reactor page
The map has a Near me button (the nearest plants to where you are, worked out in your browser and never sent anywhere) and a Copy link button: the address always holds the current view, so a link reopens the same zoom, filters and selected site
Naval, fusion and weapons pages now show where each entry sits among its peers, computed from the entries on the site
Outages on a feed code that covers two units (Temelin, Beznau) are now listed as unit not specified, with both candidates, instead of being flagged as unmatched

10 Oct 2026

Outages: 28 more reactors are now matched to the ENTSO-E feed, 104 operating units in total. Spain (all but Ascó 2) and Switzerland's Gösgen are added, and every operating French unit is now matched. Beznau 1/2, Temelín 1/2 and Dukovany 2-4 are still unmapped

7 Oct 2026

Outages: Spain's Cofrentes is now covered, the first Spanish unit to appear in the ENTSO-E feed, and Cruas 1 is mapped. Spain's other reactors are added as they file

28 Sep 2026

Outages outside the US now also cover France, Czechia and Switzerland, from the ENTSO-E Transparency Platform: 72 operating units tracked in total, up from 38. Spain's feed is queried too, but no Spanish unit has yet appeared in it to confirm a code for
/build-times/: are reactors taking longer to build, by the decade they connected
/vendor-trends/: has reactor-building concentrated in fewer vendors, by the decade construction started
/technology-mix/: which reactor technology dominated each era
/capacity-distribution/: the spread of reactor sizes, and how the typical size has changed by decade

23 Sep 2026

/plants/: the largest nuclear plants, ranked by combined operating capacity at one site
/elevation/: how close to sea level, and how close to the coast, the operating fleet sits
A CSV export of every correction applied on top of the source data

22 Sep 2026

/nearby/: find the plant sites closest to you, using your browser's own location; nothing is sent anywhere
Installable as an app, with a proper icon, and searchable straight from the browser address bar
/uprates/: which reactors run above or below the net capacity their design was originally rated at
/status/data/: whether each of the site's own live feeds is currently up to date
/data/api/: a reference for every live JSON and Atom endpoint the status Worker serves
Atom feeds for the changelog and for World Nuclear News headlines
CSV exports for the ownership and fuel supply exposure pages
Fuel supply exposure page and a table on every country page, from the sourced supplier table: which fabricators are documented as able to make each country's fuel
How long builds take, on the construction page and on every reactor design's own page
Biggest movers: which countries gained or lost the most capacity over the last 10 years, on /history/
Who owns the reactor fleet, worldwide and by country, from ownership stakes on record
Long-term earthquake and outage-check history, kept by the status Worker, shown on plant and reactor pages
Social preview cards for every plant and country page
/this-week/: outage changes, earthquakes and headlines from the last seven days
Print-friendly country briefs

20 Sep 2026

/compare/: put two to four plants or countries side by side
/age/: how old the fleet is, and which units have a planned retirement year
An alerts feed (Atom) for reactor outages and large earthquakes near plants
Embeddable cards for any plant or country, and two more CSV data exports
Two posts written from the site's own data: where reactors sit relative to the coast, and how old the fleet is

19 Sep 2026

Full redesign to the dark house style shared with the rest of the energy series
Elevation and distance to water on every plant page, from a terrain model
/history/: the world fleet, year by year, with an animated map and a slider
An operating-capacity-over-time chart on every country page
Nuclear outages outside the US (Ontario, Great Britain, Belgium, Finland, Sweden), checked hourly
The USGS earthquake feed, and recent earthquakes shown on every plant page
Zoomed maps on plant and country pages

8 Sep 2026

/news/: an automated World Nuclear News feed
SMR designs, accidents, and fusion projects added as their own sections

7 Sep 2026

Site launched: the reactor fleet, the fuel chain from mine to repository, companies, and daily US reactor status from the NRC