| Station | Type | Capacity | Stage | Region | Operator |
| Longannet Power Station |
Coal-fired power station |
2,400 MW |
Closed |
Scotland |
Scottish Power |
| Ratcliffe-on-Soar Power Station |
Coal-fired power station |
2,116 MW |
Closed |
Nottinghamshire |
Uniper |
| West Burton A Power Station |
Coal-fired power station |
2,012 MW |
Closed |
Nottinghamshire |
EDF Energy |
| Cottam Power Station |
Coal-fired power station |
2,008 MW |
Closed |
Nottinghamshire |
EDF Energy |
| Didcot A Power Station |
Coal-fired power station |
2,000 MW |
Closed |
Oxfordshire |
RWE npower |
| Ferrybridge C Power Station |
Coal-fired power station |
2,000 MW |
Closed |
Yorkshire |
SSE |
| Kingsnorth Power Station |
Coal-fired power station |
2,000 MW |
Closed |
Kent |
E.ON UK |
| Fiddler's Ferry Power Station |
Coal-fired power station |
1,995 MW |
Closed |
Cheshire |
SSE |
| Eggborough Power Station |
Coal-fired power station |
1,960 MW |
Closed |
North Yorkshire |
Eggborough Power Ltd |
| Aberthaw B Power Station |
Coal-fired power station |
1,586 MW |
Closed |
Vale of Glamorgan |
RWE |
| Hinkley Point B |
Nuclear power station |
1,220 MW |
Closed |
Somerset |
NDA / NRS |
| Cockenzie Power Station |
Coal-fired power station |
1,152 MW |
Closed |
East Lothian |
Scottish Power |
| Rugeley B Power Station |
Coal-fired power station |
1,050 MW |
Closed |
Staffordshire |
Engie |
| Thorpe Marsh Power Station |
Coal-fired power station |
1,050 MW |
Closed |
South Yorkshire |
National Power |
| Tilbury B Power Station |
Coal-fired power station |
1,050 MW |
Closed |
Essex |
RWE npower |
| Dungeness B |
Nuclear power station |
1,040 MW |
Closed |
Kent |
NDA / NRS |
| Ironbridge B Power Station |
Coal-fired power station |
1,000 MW |
Closed |
Shropshire |
E.ON UK |
| Hunterston B |
Nuclear power station |
980 MW |
Closed |
Ayrshire |
NDA / NRS |
| Wylfa Nuclear Power Station |
Nuclear power station |
980 MW |
Closed |
Anglesey |
NDA / NRS |
| High Marnham Power Station |
Coal-fired power station |
945 MW |
Closed |
Nottinghamshire |
TXU Europe |
| Kilroot Power Station |
Coal-fired power station |
520 MW |
Closed |
County Antrim |
EP UK Investments |
| Battersea Power Station |
Coal-fired power station |
509 MW |
Closed |
London |
CEGB (historic) |
| Hinkley Point A |
Nuclear power station |
470 MW |
Closed |
Somerset |
NDA / NRS |
| Dungeness A |
Nuclear power station |
450 MW |
Closed |
Kent |
NDA / NRS |
| Oldbury Nuclear Power Station |
Nuclear power station |
434 MW |
Closed |
South Gloucestershire |
NDA / NRS |
| Sizewell A |
Nuclear power station |
420 MW |
Closed |
Suffolk |
NDA / NRS |
| Willington Power Station |
Coal-fired power station |
400 MW |
Closed |
Derbyshire |
CEGB (historic) |
| Trawsfynydd Nuclear Power Station |
Nuclear power station |
390 MW |
Closed |
Gwynedd |
NDA / NRS |
| Uskmouth Power Station |
Coal-fired power station |
363 MW |
Closed |
Newport |
SIMEC Atlantis |
| Bankside Power Station |
Coal-fired power station |
300 MW |
Closed |
London |
CEGB (historic) |
| Hunterston A |
Nuclear power station |
300 MW |
Closed |
Ayrshire |
NDA / NRS |
| Berkeley Nuclear Power Station |
Nuclear power station |
276 MW |
Closed |
Gloucestershire |
NDA / NRS |
| Croydon B Power Station |
Coal-fired power station |
255 MW |
Closed |
London |
CEGB (historic) |
| Bradwell Nuclear Power Station |
Nuclear power station |
246 MW |
Closed |
Essex |
NDA / NRS |
| Dounreay Nuclear Site |
Nuclear power station |
245 MW |
Closed |
Highlands |
Nuclear Restoration Services (NRS) |
| Calder Hall |
Nuclear power station |
196 MW |
Closed |
Cumbria |
BNFL (historic) |
| Chapelcross |
Nuclear power station |
196 MW |
Closed |
Dumfries |
NDA / NRS |
Source: Department for Energy Security and Net Zero, Digest of UK Energy Statistics (DUKES) table 5.11, plus Octary's records of legacy and decommissioned sites. Capacities are installed capacity, not live output. For hand-written histories and engineering diagrams of the UK's major stations, see the power stations atlas.