Chapelcross
Annan, Dumfries and Galloway
Reactor Data
Reactor Units
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.
4 units: 4 permanent shutdown.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Chapelcross 1 | GCR | MAGNOX | 48 | 1955-10-01 | 1959-02-01 | 1959-03-01 | 2004-06-29 | Permanent Shutdown |
| Chapelcross 2 | GCR | MAGNOX | 48 | 1955-10-01 | 1959-07-01 | 1959-08-01 | 2004-06-29 | Permanent Shutdown |
| Chapelcross 3 | GCR | MAGNOX | 48 | 1955-10-01 | 1959-11-01 | 1959-12-01 | 2004-06-29 | Permanent Shutdown |
| Chapelcross 4 | GCR | MAGNOX | 48 | 1955-10-01 | 1960-01-01 | 1960-03-01 | 2004-06-29 | Permanent Shutdown |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Chapelcross 1 | 35 | 60 | 260 | 1958-11-09 | UNITED KINGDOM ATOMIC ENERGY AUTHORITY | C.A.PARSONS | |
| Chapelcross 2 | 35 | 60 | 260 | 1959-05-30 | UNITED KINGDOM ATOMIC ENERGY AUTHORITY | C.A.PARSONS | |
| Chapelcross 3 | 35 | 60 | 260 | 1959-08-31 | UNITED KINGDOM ATOMIC ENERGY AUTHORITY | C.A.PARSONS | |
| Chapelcross 4 | 35 | 60 | 260 | 1959-12-22 | UNITED KINGDOM ATOMIC ENERGY AUTHORITY | C.A.PARSONS |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Chapelcross 1 | 14.2 TWh | 85.5% | 87.2% | 94.2% |
| Chapelcross 2 | 14.2 TWh | 85.5% | 87.2% | 94.2% |
| Chapelcross 3 | 14.2 TWh | 85.5% | 87.3% | 94.2% |
| Chapelcross 4 | 14.2 TWh | 85.5% | 87.3% | 94.2% |
Operator: MAGNOX, LTD
Owner: Nuclear Decommissioning Authority
Source: IAEA Power Reactor Information System (PRIS), as of 2026-10-19.
Working Here
Per Diem Rates FY 2026
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.
Photos
Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.
Facility Map
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.
55.0166, -3.22554
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Plant Facts
About This Site
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: Chapelcross nuclear power station.
Chapelcross was a nuclear power station about 3 km northeast of Annan in Dumfries and Galloway, southwest Scotland. It was built on the former RAF Annan airfield and had four Magnox reactors, each rated at 60 MW electric, which were graphite-moderated, carbon-dioxide-cooled and fueled with natural uranium.
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Construction began in 1955, and the works were officially opened on 2 May 1959. In May 1967, fuel in a channel of reactor 2 overheated after a partial blockage, and its cladding failed. All four reactors were permanently shut down on 29 June 2004. The four cooling towers were demolished on 20 May 2007.