Every power reactor at this site as listed in the IAEA Power Reactor Information System (PRIS): reactor type and model, net electrical capacity, grid connection and commercial operation dates, and current status.
Source: IAEA Power Reactor Information System (PRIS), as of 2026-10-14.
Working Here
Per Diem Rates
FY 2026
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Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from the U.S. State Department foreign per diem tables for FY 2026.
$252
Lodging/Night
$108
M&IE/Day
$360
Total/Day
United Kingdom: rate for locations the State Department does not list separately
U.S. Department of State foreign per diem, for U.S. government and contractor travel.
Interactive satellite map showing the facility's geographic location. Marker color indicates current status: green for online, red for offline, orange for reduced power. Click the header to open in Google Maps satellite view.
54.424, -3.49941
Location & Contact
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Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Written by NukeWorker from public records: facts that do not change. Operator, status and capacity come from the live data elsewhere on this page. Sources: Wikipedia: Windscale Advanced Gas Cooled Reactor; The Engineer: March 1963, The Windscale AGR.
Windscale AGR (WAGR) was a prototype advanced gas-cooled reactor on the Windscale part of the Sellafield site in Cumbria, England. The UK Atomic Energy Authority described it as a prototype for the advanced gas-cooled reactor design that followed the Magnox stations. It was designed for 100 MW of heat and 30 MW of electricity, with graphite moderation and carbon dioxide cooling, and was built by Mitchell Construction.
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The reactor was connected to the grid in February 1963 and permanently shut down in April 1981. After shutdown, it was used as a pilot project to demonstrate techniques for decommissioning a reactor, and The Engineer reported the end of that project in June 2011.
![Windscale Map](https://www.nukeworker.com/pictures/albums/Europe/UK/windscale/thumb_uk-map.gif "Windscale Map
The Sellafield site is built on land that was formerly part of the Windscale nuclear site, which is named after a nearby village. Windscale was owned by the United Kingdom Atomic Energy Authority. Following the breakup of the UKAEA into research (UKAEA) and production (BNFL) arms, part of the site was transferred to BNFL. In 1981 the transferred part of the site was renamed "Sellafield" [1]. The remainder of the site remains in the hands of the UKAEA and is still called Windscale. Two air-cooled, graphite-moderated Windscale reactors constituted the first British weapons grade plutonium 239 production facility, built for the British nuclear weapons program in the late 40s and the 50s.
Keywords: Windscale
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