Heysham
Morecambe, Lancashire
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 operational.
Net capacity in service: 2,300 MWe.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Heysham A-1 | GCR | AGR | 485 | 1970-12-01 | 1983-07-09 | 1989-04-01 | Operational | |
| Heysham A-2 | GCR | AGR | 575 | 1970-12-01 | 1984-10-11 | 1989-04-01 | Operational | |
| Heysham B-1 | GCR | AGR | 620 | 1980-08-01 | 1988-07-12 | 1989-04-01 | Operational | |
| Heysham B-2 | GCR | AGR | 620 | 1980-08-01 | 1988-11-11 | 1989-04-01 | Operational |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Heysham A-1 | 611 | 625 | 1,500 | 1983-04-06 | NUCLEAR POWER CO., LTD. | GENERAL ELECTRIC COMPANY (UK) | |
| Heysham A-2 | 611 | 625 | 1,500 | 1984-06-03 | NUCLEAR POWER CO., LTD. | GENERAL ELECTRIC COMPANY (UK) | |
| Heysham B-1 | 615 | 680 | 1,550 | 1988-06-23 | NUCLEAR POWER CO., LTD. | NEI PARSONS | |
| Heysham B-2 | 615 | 680 | 1,550 | 1988-11-01 | NUCLEAR POWER CO., LTD. | NEI PARSONS |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Heysham A-1 | 125.5 TWh | 67.7% | 68.2% | 73.3% |
| Heysham A-2 | 121.0 TWh | 65.3% | 66.1% | 72.5% |
| Heysham B-1 | 152.3 TWh | 76.9% | 77.6% | 82.2% |
| Heysham B-2 | 151.0 TWh | 76.9% | 77.6% | 82.0% |
Operator: EDF Energy
Owner: EDF Energy
Source: IAEA Power Reactor Information System (PRIS), as of 2026-11-02.
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.
54.0302, -2.91274
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: Heysham nuclear power station.
Heysham is a nuclear power station site at Heysham in Lancashire, England, near Morecambe. It consists of two stations, Heysham 1 and Heysham 2, each with two advanced gas-cooled reactors.
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Construction of Heysham 1, which has units A-1 and A-2, began on 1 December 1970. Construction of Heysham 2, with units B-1 and B-2, began around 1980. The Heysham 1 units were first connected to the grid in July 1983 and October 1984, and the Heysham 2 units in July 1988 and November 1988.