| Station | Type | Capacity | Stage | Region | Operator |
| Drax Power Station |
Biomass power station |
2,595 MW |
Operating |
Yorkshire |
Drax Group |
| Drax Power Station Biomass Units |
Biomass power station |
2,580 MW |
Operating |
Yorkshire and the Humber |
Drax Group |
| Pembroke |
Gas-fired power station |
2,199 MW |
Operating |
Wales |
RWE Npower |
| Staythorpe |
CCGT gas power station |
1,828 MW |
Operating |
East Midlands |
RWE Npower |
| Grain |
Gas-fired power station |
1,517 MW |
Operating |
South East |
Uniper UK |
| Didcot B |
Gas-fired power station |
1,450 MW |
Operating |
South East |
RWE Npower |
| Connahs Quay |
Gas-fired power station |
1,380 MW |
Operating |
Wales |
Uniper UK |
| EP SHB LTD |
CCGT gas power station |
1,365 MW |
Operating |
Yorkshire and the Humber |
EPUKi |
| West Burton CCGT |
CCGT gas power station |
1,332 MW |
Operating |
East Midlands |
UK Transition Limited |
| VPI |
CCGT gas power station |
1,252 MW |
Operating |
Yorkshire and the Humber |
Vitol |
| Heysham 2 |
Nuclear power station |
1,240 MW |
Operating |
North West |
EDF Energy |
| Seabank Power Ltd |
CCGT gas power station |
1,234 MW |
Operating |
South West |
Co-owned by SSE Group and Cheung Kong Infrastructure Ltd |
| Saltend Power Station |
Gas-fired power station |
1,200 MW |
Operating |
Yorkshire and the Humber |
Energy Capital Partners |
| Torness |
Nuclear power station |
1,200 MW |
Operating |
Scotland |
EDF Energy |
| Sizewell B |
Nuclear power station |
1,198 MW |
Operating |
East of England |
EDF Energy |
| Hartlepool |
Nuclear power station |
1,185 MW |
Operating |
North East |
EDF Energy |
| Peterhead |
Gas-fired power station |
1,180 MW |
Operating |
Scotland |
SSE Group |
| Heysham 1 |
Nuclear power station |
1,060 MW |
Operating |
North West |
EDF Energy |
| Spalding Energy Company Ltd |
CCGT gas power station |
950 MW |
Operating |
East Midlands |
Intergen |
| EP Langage Ltd |
CCGT gas power station |
905 MW |
Operating |
South West |
EPUKi |
| Marchwood Power |
CCGT gas power station |
898 MW |
Operating |
South East |
Marchwood Power |
| Carrington Power |
CCGT gas power station |
884 MW |
Operating |
North West |
ESB |
| Severn Power Ltd |
CCGT gas power station |
850 MW |
Operating |
Wales |
Calon Energy |
| Keadby 2 |
Gas-fired power station |
840 MW |
Operating |
East Midlands |
SSE Group |
| Rocksavage Power Company Ltd |
CCGT gas power station |
810 MW |
Operating |
North West |
Intergen |
| Damhead Creek |
Gas-fired power station |
805 MW |
Operating |
South East |
Vitol |
| Coryton Energy Company Ltd |
CCGT gas power station |
800 MW |
Operating |
South East |
Intergen |
| Medway |
Gas-fired power station |
755 MW |
Operating |
South East |
SSE Group |
| Keadby |
CCGT gas power station |
735 MW |
Operating |
East Midlands |
SSE Group |
| Little Barford |
CCGT gas power station |
735 MW |
Operating |
East of England |
RWE Npower |
| Rye House |
Gas-fired power station |
715 MW |
Operating |
East of England |
Vitol |
| EP Ballylumford CCGT |
CCGT gas power station |
616 MW |
Operating |
Northern Ireland |
EPUKi |
| Killingholme |
Open-cycle gas power station |
600 MW |
Operating |
Yorkshire and the Humber |
Uniper UK |
| Cottam Development Centre |
CCGT gas power station |
445 MW |
Operating |
East Midlands |
Uniper UK |
| Great Yarmouth |
CCGT gas power station |
420 MW |
Operating |
East of England |
RWE Npower |
| Lynemouth Power Limited |
Biomass power station |
420 MW |
Operating |
North East |
EPUKi |
| Shoreham |
CCGT gas power station |
420 MW |
Operating |
South East |
Vitol |
| CoolkeeraghESB C30 |
CCGT gas power station |
413 MW |
Operating |
Northern Ireland |
ESB |
| Enfield |
CCGT gas power station |
408 MW |
Operating |
London |
Uniper UK |
| Corby Power Station |
CCGT gas power station |
407 MW |
Operating |
East Midlands |
ESB |
| Kings Lynn |
CCGT gas power station |
395 MW |
Operating |
East of England |
RWE Npower |
| Spalding Expansion OCGT |
Open-cycle gas power station |
300 MW |
Operating |
East Midlands |
Intergen |
| Peterborough Power Station |
Open-cycle gas power station |
245 MW |
Operating |
East of England |
River Nene |
| Taylors Lane |
Oil-fired power station |
144 MW |
Operating |
London |
Uniper UK |
| Cowes |
Oil-fired power station |
140 MW |
Operating |
South East |
RWE Npower |
| Indian Queens Power Ltd |
Oil-fired power station |
140 MW |
Operating |
South West |
Energy Capital Partners |
| Wilton International |
Gas-fired power station |
120 MW |
Operating |
North East |
Sembcorp Utilities |
| EP Ballylumford |
Oil-fired power station |
116 MW |
Operating |
Northern Ireland |
EPUKi |
| Didcot GT |
Oil-fired power station |
100 MW |
Operating |
South East |
RWE Npower |
| Heartlands |
Open-cycle gas power station |
100 MW |
Operating |
West Midlands |
River Nene |
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.