| Dinorwig hydroelectric plant | 2.0 GW | ENGIE |
| Hinkley Point nuclear power plant | 1.7 GW | — |
| Hinkley Point nuclear power plant | 1.7 GW | — |
| East Anglia wind farm | 1.4 GW | — |
| Sofia wind farm | 1.4 GW | — |
| Hornsea wind farm | 1.3 GW | — |
| Sizewell nuclear power plant | 1.3 GW | — |
| Hornsea wind farm | 1.2 GW | — |
| Dogger Bank wind farm | 1.2 GW | — |
| Dogger Bank wind farm | 1.2 GW | — |
| Dogger Bank wind farm | 1.2 GW | — |
| Peterhead power station | 1.2 GW | SSE Thermal |
| Peterhead power station | 1.2 GW | SSE Thermal |
| Inch Cape wind farm | 1.1 GW | — |
| Seagreen offshore wind farm | 1.1 GW | — |
| Marchwood power station | 920 MW | Marchwood Power |
| Marchwood power station | 920 MW | Marchwood Power |
| Langage power station | 905 MW | EP UK Investments |
| Langage power station | 905 MW | EP UK Investments |
| Keadby power station | 893 MW | SSE Thermal |
| Keadby power station | 893 MW | SSE Thermal |
| Moray West Offshore wind farm | 882 MW | — |
| Triton Knoll (Innogy) wind farm | 857 MW | — |
| Seabank power station | 836 MW | Seabank Power |
| Seabank power station | 836 MW | Seabank Power |
| Sutton Bridge power station | 819 MW | Calon Energy |
| Sutton Bridge power station | 819 MW | Calon Energy |
| Rocksavage power station | 810 MW | InterGen |
| South Humber Bank power station | 810 MW | EP UK Investments |
| Rocksavage power station | 810 MW | InterGen |
| South Humber Bank power station | 810 MW | EP UK Investments |
| Damhead Creek power station | 805 MW | VPI Power |
| Damhead Creek power station | 805 MW | VPI Power |
| Coryton power station | 800 MW | InterGen |
| Coryton power station | 800 MW | InterGen |
| Didcot power station | 780 MW | RWE Generation UK |
| Didcot power station | 780 MW | RWE Generation UK |
| Medway power station | 755 MW | SSE Thermal |
| Medway power station | 755 MW | SSE Thermal |
| Keadby power station | 735 MW | SSE Thermal |
| Little Barford power station | 735 MW | RWE Generation UK |
| Keadby power station | 735 MW | SSE Thermal |
| Little Barford power station | 735 MW | RWE Generation UK |
| Rye House power station | 715 MW | VPI Power |
| Rye House power station | 715 MW | VPI Power |
| East Anglia wind farm | 714 MW | — |
| Didcot power station | 710 MW | RWE Generation UK |
| Didcot power station | 710 MW | RWE Generation UK |
| Torness nuclear power plant | 682 MW | — |
| Torness nuclear power plant | 682 MW | — |
| Heysham nuclear power plant | 680 MW | — |
| Heysham nuclear power plant | 680 MW | — |
| Walney wind farm | 659 MW | — |
| Hartlepool nuclear power plant | 655 MW | — |
| Hartlepool nuclear power plant | 655 MW | — |
| Spalding power station | 650 MW | InterGen |
| Spalding power station | 650 MW | InterGen |
| Drax power station | 645 MW | Drax Power |
| Drax power station | 645 MW | Drax Power |
| Drax power station | 645 MW | Drax Power |
| Drax power station | 645 MW | Drax Power |
| London Array wind farm | 630 MW | — |
| Heysham nuclear power plant | 625 MW | — |
| Heysham nuclear power plant | 625 MW | — |
| Beatrice wind farm | 588 MW | — |
| South Humber Bank power station | 580 MW | EP UK Investments |
| South Humber Bank power station | 580 MW | EP UK Investments |
| Gwynt Y M‚àö¬•r Offshore wind farm | 576 MW | — |
| Immingham power station | 530 MW | VPI Immingham |
| Immingham power station | 530 MW | VPI Immingham |
| Greater Gabbard wind farm | 504 MW | — |
| Pembroke power station | 465 MW | RWE Generation UK |
| Pembroke power station | 465 MW | RWE Generation UK |
| Pembroke power station | 465 MW | RWE Generation UK |
| Pembroke power station | 465 MW | RWE Generation UK |
| Pembroke power station | 465 MW | RWE Generation UK |
| Pembroke power station | 465 MW | RWE Generation UK |
| Pembroke power station | 465 MW | RWE Generation UK |
| Pembroke power station | 465 MW | RWE Generation UK |
| West Burton power station | 460 MW | TotalEnergies |
| West Burton power station | 460 MW | TotalEnergies |
| Carrington power station | 455 MW | Electricity Supply Board |
| Carrington power station | 455 MW | Electricity Supply Board |
| Grain power station | 455 MW | Uniper UK |
| Grain power station | 455 MW | Uniper UK |
| Grain power station | 455 MW | Uniper UK |
| Carrington power station | 455 MW | Electricity Supply Board |
| Carrington power station | 455 MW | Electricity Supply Board |
| Grain power station | 455 MW | Uniper UK |
| Grain power station | 455 MW | Uniper UK |
| Grain power station | 455 MW | Uniper UK |
| West Burton power station | 450 MW | TotalEnergies |
| West Burton power station | 450 MW | TotalEnergies |
| Neart Na Gaoithe wind farm | 450 MW | — |
| West Burton power station | 450 MW | TotalEnergies |
| West Burton power station | 450 MW | TotalEnergies |
| Cottam Development Centre power station | 445 MW | Uniper UK |
| Pembroke power station | 445 MW | RWE Generation UK |
| Cottam Development Centre power station | 445 MW | Uniper UK |
| Pembroke power station | 445 MW | RWE Generation UK |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Viking wind farm | 443 MW | — |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Staythorpe C power station | 443 MW | RWE Generation UK |
| Cruachan hydroelectric plant | 440 MW | — |
| Severn power station | 425 MW | Calon Energy |
| Severn power station | 425 MW | Calon Energy |
| Severn power station | 425 MW | Calon Energy |
| Severn power station | 425 MW | Calon Energy |
| Seabank power station | 422 MW | Seabank Power |
| Seabank power station | 422 MW | Seabank Power |
| Great Yarmouth power station | 420 MW | RWE Generation UK |
| Shoreham power station | 420 MW | VPI Power |
| Great Yarmouth power station | 420 MW | RWE Generation UK |
| Shoreham power station | 420 MW | VPI Power |
| Coolkeeragh power station | 413 MW | Electricity Supply Board |
| Coolkeeragh power station | 413 MW | Electricity Supply Board |
| Enfield power station | 408 MW | Uniper UK |
| Enfield power station | 408 MW | Uniper UK |
| Dudgeon wind farm | 402 MW | — |
| Saltend power station | 400 MW | SSE Thermal |
| Saltend power station | 400 MW | SSE Thermal |
| Saltend power station | 400 MW | SSE Thermal |
| Rampion Offshore wind farm | 400 MW | — |
| Saltend power station | 400 MW | SSE Thermal |
| Saltend power station | 400 MW | SSE Thermal |
| Saltend power station | 400 MW | SSE Thermal |
| King's Lynn power station | 395 MW | RWE Generation UK |
| King's Lynn power station | 395 MW | RWE Generation UK |
| West Of Duddon Sands wind farm | 389 MW | — |
| Ffestiniog hydroelectric plant | 384 MW | ENGIE |
| Immingham power station | 375 MW | VPI Immingham |
| Immingham power station | 375 MW | VPI Immingham |
| Immingham power station | 375 MW | VPI Immingham |
| Immingham power station | 375 MW | VPI Immingham |
| Project Fortress solar farm | 373 MW | — |
| Galloper offshore wind farm | 353 MW | — |
| Corby power station | 350 MW | Corby Power |
| Clyde wind farm | 350 MW | — |
| Corby power station | 350 MW | Corby Power |
| Connah's Quay power station | 345 MW | Uniper UK |
| Connah's Quay power station | 345 MW | Uniper UK |
| Connah's Quay power station | 345 MW | Uniper UK |
| Connah's Quay power station | 345 MW | Uniper UK |
| Connah's Quay power station | 345 MW | Uniper UK |
| Connah's Quay power station | 345 MW | Uniper UK |
| Connah's Quay power station | 345 MW | Uniper UK |
| Connah's Quay power station | 345 MW | Uniper UK |
| Kilroot power station | 340 MW | EP UK Investments |
| Kilroot power station | 340 MW | EP UK Investments |
| Kilroot power station | 340 MW | EP UK Investments |
| Kilroot power station | 340 MW | EP UK Investments |
| Whitelee wind farm | 322 MW | — |
| Foyers hydroelectric plant | 320 MW | SSE |
| Sheringham Shoal wind farm | 317 MW | — |
| Killingholme Power Station | 311 MW | Uniper UK |
| Killingholme Power Station | 311 MW | Uniper UK |
| Killingholme Power Station | 311 MW | Uniper UK |
| Killingholme Power Station | 311 MW | Uniper UK |
| Ballylumford power station | 300 MW | EP UK Investments |
| Ballylumford power station | 300 MW | EP UK Investments |
| Spalding power station | 300 MW | InterGen |
| Thanet wind farm | 300 MW | — |
| Ballylumford power station | 300 MW | EP UK Investments |
| Ballylumford power station | 300 MW | EP UK Investments |
| Spalding power station | 300 MW | InterGen |
| Tees Rep Biomass Plant | 299 MW | MGT Teesside |
| Hirwaun power station | 299 MW | Hirwaun Power |
| Immingham power station | 299 MW | VPI Immingham |
| Millbrook power station | 299 MW | Millbrook Power |
| Progress power station | 299 MW | Progress Power |
| Hirwaun power station | 299 MW | Hirwaun Power |
| Immingham power station | 299 MW | VPI Immingham |
| Millbrook power station | 299 MW | Millbrook Power |
| Progress power station | 299 MW | Progress Power |
| Race Bank wind farm | 289.8 MW | — |
| Race Bank wind farm | 283.5 MW | — |
| Thurrock Flexible power station | 270 MW | Statera Energy |
| Lincs wind farm | 270 MW | — |
| Thurrock Flexible power station | 270 MW | Statera Energy |
| Burbo Bank wind farm | 258 MW | — |
| Peterborough power station | 245 MW | Whitetower Holdings UK |
| Peterborough power station | 245 MW | Whitetower Holdings UK |
| South Kyle wind farm | 240 MW | — |
| Kilgallioch wind farm | 239 MW | — |
| Pen Y Cymoedd wind farm | 228 MW | — |
| Stronelairg wind farm | 227.7 MW | — |
| Humber Gateway A wind farm | 219 MW | — |
| Westermost Rough A wind farm | 210 MW | — |
| North Kyle Energy Project wind farm | 205.8 MW | — |
| Stanlow Refinery power station | 200 MW | Essar Oil (UK) |
| Stanlow Refinery power station | 200 MW | Essar Oil (UK) |
| Walney wind farm | 183.6 MW | — |
| Walney wind farm | 183.6 MW | — |
| Thurrock Flexible power station | 180 MW | Statera Energy |
| Thurrock Flexible power station | 180 MW | Statera Energy |
| Dorenell wind farm | 177 MW | — |
| Clyde wind farm | 172.8 MW | — |
| Griffin wind farm | 156 MW | — |
| Fellside CHP power station | 155 MW | Sellafield |
| Fellside CHP power station | 155 MW | Sellafield |
| Sloy hydroelectric plant | 153 MW | SSE |
| Ormonde Offshore wind farm | 150 MW | — |
| Grangemouth power station | 145 MW | INEOS Group |
| Grangemouth power station | 145 MW | INEOS Group |
| Fallago Rig wind farm | 144 MW | — |
| Lynemouth power station | 140 MW | Energetický a průmyslový holding |
| Lynemouth power station | 140 MW | Energetický a průmyslový holding |
| Lynemouth power station | 140 MW | Energetický a průmyslový holding |
| Indian Queens power station | 140 MW | Triton Power |
| Indian Queens power station | 140 MW | Triton Power |
| Crystal Rig wind farm | 138 MW | — |
| Harestanes wind farm | 136 MW | — |
| Saica Paper Mill power station | 135 MW | Saica Paper |
| Saica Paper Mill power station | 135 MW | Saica Paper |
| Cumberhead West wind farm | 126 MW | — |
| Fawley Refinery power station | 125 MW | Esso Petroleum |
| Fawley Refinery power station | 125 MW | Esso Petroleum |
| Black Law wind farm | 124 MW | — |
| Wilton International power station | 120 MW | Sembcorp Industries |
| Cowley Complex solar farm | 120 MW | — |
| Arecleoch wind farm | 120 MW | — |
| Hadyard Hill wind farm | 120 MW | — |
| Wilton International power station | 120 MW | Sembcorp Industries |
| Smurfit Townsend Hook power station | 115 MW | Smurfit Kappa UK |
| Smurfit Townsend Hook power station | 115 MW | Smurfit Kappa UK |
| Bhlaraidh wind farm | 110 MW | — |
| Whitelee wind farm | 109 MW | — |
| Gunfleet Sands Offshore wind farm | 108 MW | — |
| Whitelee wind farm | 108 MW | — |
| Didcot power station | 100 MW | RWE Generation UK |
| Glendoe hydroelectric plant | 100 MW | SSE |
| Didcot power station | 100 MW | RWE Generation UK |
| Inner Dowsing wind farm | 97.2 MW | — |
| Lynn wind farm | 97.2 MW | — |
| Aberdeen Offshore wind farm | 97 MW | — |
| European Offshore Wind Deployment Centre (Eowdc) wind farm | 96.8 MW | — |
| Clocaenog Forest wind farm | 96 MW | — |
| Winnington Brunner power station | 94 MW | Winnington CHP |
| Dunmaglass wind farm | 94 MW | — |
| Winnington Brunner power station | 94 MW | Winnington CHP |
| Wissington Sugar Factory power station | 93 MW | British Sugar |
| Wissington Sugar Factory power station | 93 MW | British Sugar |
| Creag Riabhach wind farm | 92.4 MW | — |
| Farr wind farm | 92 MW | — |