| Dinorwig | Gwynedd | First Hydro Company | 1,728 MW |
| Gwynt y Mor | — | RWE | 576 MW |
| Ffestiniog | Gwynedd | First Hydro Company | 360 MW |
| Port Talbot Renewable Energy Plant | Neath Port Talbot | Orthios Group | 350 MW |
| Anglesey Biomass Power Station | Isle of Anglesey | Orthios Group | 299 MW |
| Tidal Lagoon Swansea Bay | — | Tidal Lagoon PLC +1 | 240 MW |
| Pen Y Cymoedd | Neath Port Talbot | Vattenfall | 228 MW |
| Carnedd Wen Wind Farm | Powys | Innogy | 150 MW |
| Y Bryn Wind Farm | Neath Port Talbot | ESB Limited +1 | 130 MW |
| Scarweather Sands | — | Energie 2 | 108 MW |
| Craig y Perthi Solar Farm | Newport | JBM Solar Projects Limited | 99.9 MW |
| Seion, Pentir - Battery Energy Storage System | Gwynedd | Brockwell Storage & Solar Limited | 99.9 MW |
| Clocaenog Forest Wind Farm | Conwy | RWE Innogy UK +1 | 96 MW |
| Rhyl Flats | — | RWE npower | 90 MW |
| Mynydd y Gwynt Wind Farm | Powys | Mynydd y Gwynt Ltd | 89.1 MW |
| Brig y Cwm | Merthyr Tydfil | Covanta | 77 MW |
| Llanwern Solar Farm & Battery Storage | Newport | NextEnergy Capital LLP | 75 MW |
| Shotwick Solar Farm | Flintshire | Foresight Solar Fund | 72.2 MW |
| Llanbrynmair Wind Farm | Powys | Renewable Energy Systems | 69 MW |
| Fferm Wynt Llaithddu Cyf | Powys | Fferm Wynt Llaithddu Cyf | 66.7 MW |
| Elwy Solar Energy Farm | Denbighshire | Statkraft UK Limited | 62 MW |
| North Hoyle | — | Greencoat | 60 MW |
| Cefn Croes Wind Farm | Ceredigion | Renewable Development Company Ltd, Kentech Ltd | 58.5 MW |
| Brechfa Forest West | Carmarthenshire | RWE Npower Renewables | 57.4 MW |
| Esgair Cwmowen | Powys | Pennant Walters | 51 MW |
| Llanbadarn Fynydd Wind Farm | Powys | Vattenfall | 51 MW |
| Pen Y Maes, Ashby Road - Battery Energy Storage | Vale of Glamorgan | Root Power South Limited | 50 MW |
| Kings Dock Biomass | Swansea | Dingle Holdings | 49.9 MW |
| Milford Haven/Blackbridge Biomass | Pembrokeshire | Egnedol | 49.9 MW |
| Nevis Power Station | Newport | Welsh Power +1 | 49.9 MW |
| Bryn Llywelyn | Carmarthenshire | Renewable Energy Systems | 48.3 MW |
| Werfa | Bridgend | AMEC | 47.5 MW |
| Margam Green Energy Plant | Neath Port Talbot | Glennmont Partners | 40 MW |
| Brenig Wind Farm | Denbighshire | CGNEE | 37.6 MW |
| Mynydd Waun Fawr Wind Farm | Powys | Nuon | 37.5 MW |
| Brechfa Forest East Wind Farm | Carmarthenshire | RWE Npower Renewables | 36 MW |
| Aberthaw Power Station Biomass | Vale of Glamorgan | RWE npower | 35 MW |
| Gorsedd Brân Wind Fram | Denbighshire | Tegni Cymru Cyf | 35 MW |
| Mynydd y Betws | Neath Port Talbot | Betws Common Holdings Ltd) +1 | 34.5 MW |
| Garreg Lwyd | Powys | The Renewables Infrastructure Group | 34 MW |
| Mynydd Y Gwair Wind Farm | Swansea | RWE Npower Renewables +1 | 32.8 MW |
| Dolgarrog | Conwy | RWE | 32 MW |
| Ffynnon Oer Wind Farm | Neath Port Talbot | RWE npower | 32 MW |
| Fenton Home Farm | Pembrokeshire | Sunsave | 31.3 MW |
| Mynydd James Wind Farm | Blaenau Gwent | Pennant Wind Energy Ventures Limited Walters Group | 31.2 MW |
| Eastman Peboc Factory | Isle of Anglesey | Eastman Peboc Factory | 31 MW |
| Llandinam Windfarm | Powys | Celtpower | 31 MW |
| Pen March Wind Farm | Caerphilly | RWE Renewables UK Limited | 30 MW |
| Trident Park | Cardiff | Viridor | 30 MW |
| Trident Park | Cardiff | Viridor | 30 MW |
| Mynydd Yr Hendre Wind Farm | Powys | RWE npower | 29.1 MW |
| Nant Bach | Conwy | Vattenfall | 27.5 MW |
| Neuadd Goch Bank Wind Farm | Powys | RWE Npower Renewables | 27 MW |
| Maesgwyn | Neath Port Talbot | Pennant Wind Energy Ventures | 26 MW |
| Llynfi Biomass Power Station | Bridgend | DMG Ecological Ltd | 25 MW |
| Pant y wal | Bridgend | Pennant Wind Energy Ventures | 25 MW |
| Trecwn Biomass Plant | Pembrokeshire | Renewable Developments Wales | 25 MW |
| Tirgwynt | Powys | Foresight | 24.6 MW |
| Merthyr Common | Merthyr Tydfil | Bheara Ltd | 24.3 MW |
| Cwmpenanner | Gwynedd | Zepher | 24.2 MW |
| Cemmaes 3 Wind Farm | Powys | Acciona Energy | 24 MW |
| Hirwaun Wind Farm | Rhondda Cynon Taf | Pennant Walters | 24 MW |
| Llynfi Renewable Energy Park, Land at Mynydd Caerau | Neath Port Talbot | John Laing Environmental Assets Group | 24 MW |
| Maerdy | Rhondda Cynon Taf | Greencoat UK Wind | 24 MW |
| Tiers Cross Solar Farm | Pembrokeshire | Good Energy Generation | 24 MW |
| Blaengwen | Carmarthenshire | Statkraft and Catamount Energy Corporation | 23 MW |
| Derwydd Bach Wind Farm | Denbighshire | AGR Renewables | 23 MW |
| Llys Dymper Wind Farm | Conwy | Windpower Wales | 23 MW |
| Mynydd Bwllfa Wind Farm - Resubmission | Rhondda Cynon Taf | Pennant Walters | 22.5 MW |
| Pen y Cymoedd Energy Storage | Neath Port Talbot | Vattenfall | 22 MW |
| Hirwaun Stor Generation - Battery Storage | Rhondda Cynon Taf | Pulse Clean Energy | 21.8 MW |
| Tir Mostyn And Foel Goch Wind Farm | Denbighshire | Munich RE | 21.3 MW |
| Nant Carfan Wind Farm | Powys | Powergen Renewables Developments Ltd | 20.8 MW |
| Llanbabo Wind Farm | Isle of Anglesey | Manweb Generation Holdings | 20.4 MW |
| Energy Centre Royal Mint | Rhondda Cynon Taf | Infinite Energy Renewables | 20 MW |
| Enviroparks Hirwaun Generation Site | Rhondda Cynon Taf | Enviroparks Operations | 20 MW |
| Pant y wal extension | Bridgend | Pennant Walters | 20 MW |
| Traston Road | Newport | Field Energy | 20 MW |
| Blaencorrwg Wind Farm | Neath Port Talbot | Ecogen | 19.3 MW |
| Llyn Alwen Wind Farm | Conwy | National Windpower +1 | 19.3 MW |
| Moel Rhiwlug Wind Farm | Conwy | Manweb Generation Holdings +1 | 19.2 MW |
| Bryncoch Solar Farm | Carmarthenshire | Green Energy UK Direct | 19 MW |
| Llanwern Steelworks Energy Recovery Facility | Newport | Veolia | 19 MW |
| Caeremlyn Solar Farm | Carmarthenshire | Munich RE | 18 MW |
| Hirfynydd | Neath Port Talbot | Wind Ventures | 18 MW |
| Uskmouth Power Station | Newport | SIMEC Group | 18 MW |
| Fforch Nest Wind Farm pt2 | Bridgend | Pennant Walters | 17.5 MW |
| Headwind Taff Ely Wind Farm (Repowering) | Rhondda Cynon Taf | RWE Npower Renewables | 17.5 MW |
| Carno 'A' Wind Farm | Powys | RWE npower | 16.8 MW |
| Carno 'B' Wind Farm | Powys | RWE npower | 16.8 MW |
| Waun Garno | Powys | Acciona Energy | 16.5 MW |
| Bryn Du | Powys | Renewable Development Company Ltd | 16.4 MW |
| Brynteg Farm | Carmarthenshire | Brynteg Solar | 16.2 MW |
| Fforch Nest Wind Farm | Rhondda Cynon Taf | Npower Renewables | 16 MW |
| Mynydd Clogau Wind Farm - Extension | Powys | Novera Energy | 16 MW |
| Parc Adfer EfW | Flintshire | Wheelabrator | 16 MW |
| Carno 'A'and 'B' Wind Farm, (Extension) | Powys | RWE npower | 15.6 MW |
| Cemmaes 'C' Wind Farm | Powys | Vestas | 15.3 MW |
| Biomass (dedicated) 15 MW (REPD 8) | Powys | — | 15 MW |
| Bryn yr Odyn Solar Farm | Isle of Anglesey | New Forest Energy | 15 MW |
| Convatec Green Manufacturing Hub | Caerphilly | Convatec Limited | 15 MW |
| Court Colman solar park | Bridgend | Vogt Solar +1 | 15 MW |
| Mor Hafren ERF | Cardiff | Mor Hafren Biopower | 15 MW |
| Mynydd Pen-y-Graig Wind Farm | Rhondda Cynon Taf | Ventient | 15 MW |
| Hirddywell Windfarm | Powys | Celtpower | 14.8 MW |
| Mynydd Clogau Wind Farm | Powys | Renewable Energy Systems | 14.5 MW |
| Werfa Wind Farm | Neath Port Talbot | Amec Wind | 14.3 MW |
| Hafod-Y-Dafal Farm | Blaenau Gwent | KS SPV53 Ltd | 14 MW |
| Western Wood Energy Plant | Neath Port Talbot | Western Bioenergy, affiliate of Western Log | 14 MW |
| Parciau Farm Solar Park | Gwynedd | Kronos Solar | 13.9 MW |
| Bryn Blaen Wind Farm | Powys | Njord Energy Ltd | 13.8 MW |
| Clawdd Ddu PV | Carmarthenshire | Elgin Energy EsCo | 13.5 MW |
| Dulais Valley | Neath Port Talbot | Acciona Energy | 13.5 MW |
| Hendai Farm | Caerphilly | Conergy UK | 13.4 MW |
| Tylerfedwen Farm Solar Park | Neath Port Talbot | — | 13.3 MW |
| Rhoscrowther - Turbine Wind Farm | Pembrokeshire | Rhoscrowther Wind Farm Limited | 12.9 MW |
| Buttington Quarry - ERF | Powys | Broad Energy Ltd | 12.8 MW |
| Bodorgan Solar Farm | Isle of Anglesey | Anesco Limited | 12.6 MW |
| Shoals Hook Farm | Pembrokeshire | John Laing Environmental Assets Group | 12.1 MW |
| Land South of Ystalyfera | Neath Port Talbot | West Coast Energy | 12 MW |
| Mynydd Portref Wind Farm extension | Rhondda Cynon Taf | REG Windpower | 12 MW |
| New Lodge Farm - ACT | Carmarthenshire | Clean Power Properties | 12 MW |
| Ogmore & Garw | Bridgend | AMEC | 12 MW |
| Shotton Works CHP | Flintshire | Tata Steel | 12 MW |
| Varteg Hill | Neath Port Talbot | Engie | 12 MW |
| Trane Renewable Energy Park | Rhondda Cynon Taf | Gamesa Energy | 11.9 MW |
| Moel Maelogen A Phase 2 | Conwy | John Laing Environmental Assets Group | 11.7 MW |
| Hendre Fawr Farm | Neath Port Talbot | INRG Solar | 11.6 MW |
| Rudbaxton Solar Park | Pembrokeshire | Rudbaxton Solar Park Limited | 10.8 MW |
| Manor Farm (Monmouthshire) | Monmouthshire | Conergy +1 | 10.5 MW |
| Clydach Refinery | Swansea | Vale Europe | 10.3 MW |
| Mynydd Gorddu Wind Farm | Ceredigion | Cynllun Trydan Gwynt | 10.2 MW |
| Baglan Bay Solar Farm - Phase 2 | Neath Port Talbot | St. Modwen Developments | 10 MW |
| Barry Docks | Vale of Glamorgan | Sunrise Renewables | 10 MW |
| Carn Nicholas Farm (Extension) | Swansea | Innova Renewables Limited | 10 MW |
| Clean Renewable Plant at Old Llynfi Power Station | Bridgend | Green Renewable Energy Company | 10 MW |
| Cwmcaesingrug Farm | Caerphilly | Kronos Solar | 10 MW |
| Fforch Nest Wind Farm pt1 | Rhondda Cynon Taf | Pennant Walters | 10 MW |
| Hoplass Farm | Pembrokeshire | Kronos Solar | 10 MW |
| Land at Borras Hall | Wrexham | Earthworm +1 | 10 MW |
| Land south of Francis Land | Wrexham | NESF +1 | 10 MW |
| Maesygarn | Ceredigion | EW Capital +1 | 10 MW |
| Mynydd Marchywel Wind Farm | Neath Port Talbot | Renewable Energy Systems | 10 MW |
| Port of Barry | Vale of Glamorgan | Associated British Ports | 10 MW |
| SeaGen Wales Tidal Farm | — | Npower +1 | 10 MW |
| Bryn titli Windfarm | Powys | Innogy | 9.9 MW |
| Cwm Dyli | Gwynedd | RWE | 9.9 MW |
| Dragon Long Meadow - Solar farm | Pembrokeshire | Anesco Limited +1 | 9.9 MW |
| Prysan Wind Farm | Isle of Anglesey | Novera +2 | 9.9 MW |
| Gelligaer 'A' Wind Farm | Merthyr Tydfil | Swalec +1 | 9.8 MW |
| Gelligaer 'B' Wind Farm | Merthyr Tydfil | South Wales Power +1 | 9.8 MW |
| Jordanston Wind Farm | Pembrokeshire | RWE npower | 9.8 MW |
| Rover Way | Cardiff | Parc Calon Gwyrdd | 9.5 MW |
| Llangwyryfon | Ceredigion | Westbury Windfarms | 9.4 MW |
| Mynydd Portref | Rhondda Cynon Taf | Gresham House | 9.4 MW |
| Wern Ddu Wind Farm | Denbighshire | Tegni | 9.2 MW |
| Blaen Bowi Wind Farm (Extension) | Carmarthenshire | Windjen Power Ltd +1 | 9.1 MW |
| Kronospan Biomass | Wrexham | Kronospan Limited | 9.1 MW |
| Cefn Betingau Farm | Carmarthenshire | Wessex Solar Energy | 9 MW |
| Liberty Steel Power Station | Newport | SIMEC +1 | 9 MW |
| Taff Ely Wind Farm | Rhondda Cynon Taf | Npower Renewables | 9 MW |
| Bryngolwg Farm, Hirwaun - Solar farm | Rhondda Cynon Taf | Enviromena Asset Management UK Limited | 8.94 MW |
| Lamby Way Solar Farm | Cardiff | Cardiff Council | 8.9 MW |
| Trecoed Farm | Pembrokeshire | Transition Bro Gwaun | 8.9 MW |
| Court Farm | Newport | BE Renewables | 8.5 MW |
| Penrhiwarwydd Farm | Caerphilly | MTS Hill Farm Solar Ltd | 8.5 MW |
| The Ffaldau Waste Re Cycling Centre, Llandegley - CHP | Powys | Powys Environmental Limited | 8.5 MW |
| Warwick International Biomass CHP | Flintshire | Warwick International Ltd | 8.5 MW |
| Parc Cynog Extension | Carmarthenshire | Nuon | 8.4 MW |
| Wear Point | Pembrokeshire | John Laing Environmental Assets Group | 8.2 MW |
| Buckwell Farm Solar Park | Monmouthshire | — | 8.1 MW |
| Land at Lower House Farm | Monmouthshire | 3C Energy | 8.1 MW |
| Blaen Bowi Solar park | Carmarthenshire | Novus Solar Developments | 8 MW |
| Chapel Hill | Pembrokeshire | Wessex Solar Energy | 8 MW |
| Llwyn Du Solar Farm | Ceredigion | Next Energy Solar Fund Ltd | 8 MW |
| Mynydd Brombil Wind Farm | Neath Port Talbot | REG Windpower | 8 MW |
| Sutton Mawr Solar Farm (extension) | Vale of Glamorgan | Lightsource Renewable Energy | 8 MW |
| Uskmouth Power Station (ACT Plant) | Newport | SIMEC | 8 MW |
| Corston Windfarm | Pembrokeshire | Renewable Energy Systems +1 | 7.9 MW |
| Cilciffeth 'A' Wind Farm | Pembrokeshire | South Wales Power +2 | 7.8 MW |
| Cilciffeth 'B' Wind Farm | Pembrokeshire | Swalec +2 | 7.8 MW |
| Abergelli Glas Solar Farm | Swansea | Foresight | 7.7 MW |
| West Farm (Solar) | Pembrokeshire | Vogt Solar | 7.7 MW |
| Clawddcam-Mathry Solar Farm | Pembrokeshire | — | 7.5 MW |
| Maesgwyn solar farm | Neath Port Talbot | Walters Group | 7.5 MW |
| Mynydd Bwllfa solar farm | Rhondda Cynon Taf | Walters Group | 7.5 MW |
| Sutton Mawr Farm | Vale of Glamorgan | Lightsource Renewable Energy | 7.5 MW |
| Garn Solar Farm | Vale of Glamorgan | Equitix | 7.4 MW |
| Ton Marw Farm | Neath Port Talbot | Community Power Ltd | 7.3 MW |
| Trench Farm | Wrexham | Lightsource Renewable Energy | 7.2 MW |
| Llethercynnon Farm Wind Farm | Powys | Windjen Power Ltd | 7.1 MW |
| Blaenporth Solar Farm | Ceredigion | Juwi Renewable Energies | 7 MW |
| Maesgwyn Wind Farm - extension (Phase 2) | Neath Port Talbot | Pennant Walters | 7 MW |
| Trecatti | Caerphilly | Biffa | 7 MW |
| West Hall Solar Farm | Vale of Glamorgan | INRG Solar | 7 MW |
| Weycock Road | Vale of Glamorgan | Elgin Energy EsCo | 7 MW |
| Pen Y Cae solar farm | Carmarthenshire | Rockfire Capital | 6.9 MW |
| Saron Road solar park | Carmarthenshire | Anesco Limited | 6.7 MW |
| Mynydd Llanelian Wind Farm | Conwy | Windjen Power Ltd | 6.5 MW |
| Crugmore Farm | Ceredigion | John Laing Environmental Assets Group | 6.4 MW |
| Land north of Bryn Lane | Wrexham | TGC Renewables | 6.4 MW |
| Penrhys Wind Farm/Ferndale Power Factory | Rhondda Cynon Taf | John Laing Environmental Assets Group | 6.4 MW |
| Trenewydd Wind Farm | Pembrokeshire | RWE npower | 6.3 MW |
| Golden Hill | Pembrokeshire | John Laing Environmental Assets Group | 6.2 MW |
| Cuckoo Grove Farm | Pembrokeshire | Foresight | 6.1 MW |
| Yerbeston Gate Farm | Pembrokeshire | Vogt Solar +1 | 6.1 MW |
| Ambleston Solar Panels | Pembrokeshire | Arqiva Ltd | 6 MW |
| Bedlinog Wind Farm | Merthyr Tydfil | Tegni Cymru | 6 MW |
| Gelliwern Isaf Farm | Swansea | Solar Park Developments | 6 MW |
| Llynfi Afan Renewable Energy Park | Neath Port Talbot | John Laing Environmental Assets Group | 6 MW |
| Rhewl Farm | Monmouthshire | Renesola | 6 MW |
| Rhos Garn Whirlgarn | Ceredigion | Renewable Energy Systems | 6 MW |
| Rhyd-y-Pandy Solar Farm | Swansea | Wessex Solar Energy | 6 MW |
| Whitton Mawr | Vale of Glamorgan | Cenin Renewables Limited | 6 MW |
| Crundale / Fenton Home Farm (extension) | Pembrokeshire | Vogt Solar | 5.9 MW |
| Land South Of Bryn Cyrnau Isaf | Carmarthenshire | Green Switch Solutions - Liquidated | 5.9 MW |
| Blaen Bowi | Carmarthenshire | Novus Solar Developments | 5.7 MW |
| Oak Grove Farm | Monmouthshire | Monmouthshire County Council | 5.7 MW |
| Trysglwyn Wind Farm | Isle of Anglesey | RWE npower | 5.6 MW |
| Cardiff Waste Water Treatment | Cardiff | Dwr Cymru Welsh Water | 5.5 MW |
| Dyffryn Brodyn Wind Farm | Carmarthenshire | Renewable Energy Systems | 5.5 MW |
| Ffos Las Racecourse | Carmarthenshire | — | 5.5 MW |
| Pentre farm | Carmarthenshire | Kinetica Solar | 5.5 MW |
| Land at Bryn Lane | Wrexham | Equitix +1 | 5.4 MW |
| Wrexham Social Housing PV | Wrexham | Wrexham Council | 5.4 MW |
| Coal Pit Lane | Newport | Phoenix Capital R-Energy Ltd | 5.3 MW |
| Wogaston Solar Farm | Pembrokeshire | Elgin Energy EsCo | 5.3 MW |
| Bryn Lane Recycling | Wrexham | HLC Projects Ltd +1 | 5.2 MW |
| Pendragon Fach Wind Farm | Blaenau Gwent | Pennant Wind Energy Ventures and Eco2 | 5.2 MW |
| Foel Fawr | Bridgend | Marcol Afan Energy | 5.1 MW |
| Arail Farm Road | Blaenau Gwent | Active Renewables | 5 MW |
| Baglan Bay Solar Farm - Phase 1 | Neath Port Talbot | St. Modwen Developments | 5 MW |
| Banks Farm Solar Park (linked site) | Flintshire | SEP Solar | 5 MW |
| Berthlwyd Farm | Rhondda Cynon Taf | Greencoat Capital | 5 MW |
| Biglis Farm | Vale of Glamorgan | Conergy West Sussex | 5 MW |
| Bodelith Isaf Wind Turbines | Gwynedd | Pennant Walters | 5 MW |
| Carn Nicholas Farm | Swansea | Suncredit UK | 5 MW |
| Castell Ddu Solar Farm | Swansea | Caledon Partners | 5 MW |
| Cefn Cae For | Isle of Anglesey | Vortex | 5 MW |
| Celyn Farm | Flintshire | EW Capital +1 | 5 MW |
| Convatec Green Manufacturing Hub | Caerphilly | Convatec Limited | 5 MW |
| Conwy Falls | Conwy | RWE | 5 MW |
| Conwy Falls | Conwy | RWE Innogy | 5 MW |
| Cwm Derwyn Farm | Vale of Glamorgan | Kronos Solar | 5 MW |
| Cwrt Henllys Farm | Torfaen | Lightsource Renewable Energy | 5 MW |
| Dolgarrog Hydro Power Station | Conwy | Innogy | 5 MW |
| Eastern Site | Newport | Lightsource Renewable Energy | 5 MW |
| Jordanston Solar Farm | Pembrokeshire | AEE Renewables | 5 MW |
| Kingspan Factory Wind Turbines | Flintshire | Wind Direct | 5 MW |
| Kinmel 1 CIC | Conwy | Haymaker Energy | 5 MW |
| Land At Cwm Bargoed | Caerphilly | Vogt Solar +1 | 5 MW |
| Land at Lltty Morphil Farm | Swansea | Kronos Solar | 5 MW |
| Land East of Panteg Way | Torfaen | Active Renewables | 5 MW |
| Land North West of Magor Service Station | Monmouthshire | INRG Solar | 5 MW |
| Land Opposite Tyn Y Pistyll | Wrexham | Lightsource Renewable Energy | 5 MW |
| Lane South-East from Cowbridge | Vale of Glamorgan | Solar Century | 5 MW |
| Liddeston Ridge Solar Park (Milford Haven) | Pembrokeshire | Milford Haven Port Authority | 5 MW |
| Llancadle Farm | Vale of Glamorgan | Llancadle Solar Farm Ltd | 5 MW |
| Llwyndyrys Farm | Gwynedd | Luminous Energy | 5 MW |
| Mamhilad Solar Farm | Torfaen | Active Renewables | 5 MW |
| Nanhoron Estate | Gwynedd | Belectric | 5 MW |
| Nanthenfoel Farms | Ceredigion | Anesco Limited | 5 MW |
| Newton Down | Bridgend | Renewable Energy Partnerships Ltd | 5 MW |
| North Tenement | Pembrokeshire | North Tenement Solar Farm Limited | 5 MW |
| Pant-Y-Moch Farm | Neath Port Talbot | Canadian solar | 5 MW |
| Parc Cynog | Carmarthenshire | Vattenfall | 5 MW |
| Penycae Solar Farm | Wrexham | SBC Renewables | 5 MW |
| Popehill Farm | Pembrokeshire | North Tenement Solar Limited | 5 MW |
| Port of Barry - Site 2 | Vale of Glamorgan | Associated British Ports | 5 MW |
| Rosedew Farm | Vale of Glamorgan | INRG | 5 MW |
| Solutia UK Ltd | Newport | Vestas +1 | 5 MW |
| Southbrook Solar Farm | Monmouthshire | Sunventures | 5 MW |
| Tir Nyth Soalr Park | Merthyr Tydfil | Global Renewable Construction | 5 MW |
| West Orielton Farm | Pembrokeshire | Sovereign Partners | 5 MW |
| Williams Farm | Wrexham | Solar Ventures | 5 MW |
| Woden Park | Vale of Glamorgan | Caerau Solar IQ | 5 MW |
| Wood Farm Solar Park (linked site) | Flintshire | SEP Solar | 5 MW |
| Land off Lon Pin, Llanbedrog - Solar Farm | Gwynedd | Lon Pin Solar Limited | 4.99 MW |
| Maes Bach Farm | Rhondda Cynon Taf | Lightsource Renewable Energy | 4.9 MW |
| Newport (Began Road) | Newport | Eco Energy World | 4.9 MW |
| Oak Cottage | Pembrokeshire | Anesco Limited | 4.9 MW |
| Tyddyn Cae (Nefyn) | Gwynedd | Lightsource Renewable Energy | 4.9 MW |
| Upper Pant-Ysgawen Farm/Crumlin | Caerphilly | Suncredit UK | 4.9 MW |
| Rhondda Valley Solar Farm | Rhondda Cynon Taf | Western Solar | 4.8 MW |
| Mynydd Y Gwrhyd Windfarm | Neath Port Talbot | Awel Aman Tawe Community Energy | 4.7 MW |
| Pen Rhiw Caradog | Rhondda Cynon Taf | Lightsource Renewable Energy | 4.7 MW |
| Ysgellog 2 Wind Farm | Isle of Anglesey | Airvolution Energy | 4.6 MW |
| Ystgellog Farm Wind Farm | Isle of Anglesey | Airvolution Energy | 4.6 MW |
| Llyn Celyn | Gwynedd | Dwr Cymru Welsh Water | 4.5 MW |
| Pentre Tump | Powys | REG Windpower | 4.5 MW |
| Port of Barry - Site 1 | Vale of Glamorgan | Associated British Ports | 4.5 MW |
| Fferm Bryn Bachau | Gwynedd | BNRG Renewables | 4.4 MW |
| Langton Farm Solar park | Pembrokeshire | Lightsource Renewable Energy | 4.4 MW |
| Llyn Brianne Dam | Ceredigion | Dwr Cymru Welsh Water | 4.4 MW |
| Treguff Farm | Vale of Glamorgan | Lightsource Renewable Energy | 4.4 MW |
| Manmoel Road Solar Park | Caerphilly | Pearmat Solar | 4.1 MW |
| Agricultural Land at Trecastle | Rhondda Cynon Taf | Suncredit UK +1 | 4 MW |
| Brynwhilach Solar Park | Swansea | Core Pisces +1 | 4 MW |
| Cockett Valley | Swansea | Renewable Developments Wales | 4 MW |
| Gwenlais Uchaf Farm | Swansea | Renewable Developments | 4 MW |
| Hafod-y-Dafal | Blaenau Gwent | Airvolution Energy | 4 MW |
| Lamby Way Landfill Site | Cardiff | South Wales Power | 4 MW |
| Land to North West of Lodge Farm (Park Farm) | Newport | Lightsource Renewable Energy | 4 MW |
| Land West Of Erlas Hall | Wrexham | Lightsource Renewable Energy | 4 MW |
| Oakdale Business Park | Caerphilly | Resonance | 4 MW |
| Pen Bryn Oer Wind Farm | Caerphilly | BlackRock +1 | 4 MW |
| Blaen Bowi Wind Farm | Carmarthenshire | Windjen Power Ltd | 3.9 MW |
| Braich Ddu | Gwynedd | REG Windpower | 3.9 MW |
| Cefn Coed | Wrexham | — | 3.9 MW |
| Llancayo Solar Farm | Monmouthshire | m03 Power | 3.9 MW |
| Caergarw Farm | Neath Port Talbot | Suncredit UK | 3.8 MW |
| Land To West Of Cefn Llogell Farm | Newport | — | 3.8 MW |
| Stormy Down Solar Farm | Bridgend | Belisama Energy | 3.8 MW |
| Toyota Motor Manufacturing Uk - Deeside | Flintshire | Toyota Motor Manufacturing | 3.8 MW |
| Tyddyn Gwyn (Gelli Gron Farm) | Gwynedd | Lightsource Renewable Energy | 3.8 MW |
| Oak Road | Wrexham | Compact Power +1 | 3.7 MW |
| Land NW Of Pickhill Bridge Farm | Wrexham | NextEnergy Solar Fund | 3.6 MW |
| Mynydd Glyn Lws Wind Farm | Conwy | Windjen | 3.6 MW |
| Parc-Cynog Wind Farm | Carmarthenshire | Micon Wind Turbines | 3.6 MW |
| Pencefnarda Uchaf Farm | Swansea | Pencefnarda Solar | 3.6 MW |
| Longlands Farm, Rush Wall Lane | Newport | Clean Earth | 3.5 MW |
| Cemmaes 'B' Wind Farm | Powys | Vestas | 3.4 MW |
| Corntown Farm | Vale of Glamorgan | SBC Renewables | 3.4 MW |
| Redcourt Farm | Carmarthenshire | PS Renewables | 3.3 MW |
| Castle Pill - Repowering | Pembrokeshire | John Laing Environmental Assets Group | 3.2 MW |
| Felinfach | Ceredigion | Volac | 3.2 MW |
| PwllfaWatkin Landfill Gas Site | Neath Port Talbot | Waste Recycling Group | 3.2 MW |
| Blazer Fuels | Denbighshire | Newbridge Energy | 3 MW |
| Bronwylfa Reservoir | Wrexham | Wrexham County Borough Council | 3 MW |
| Great House Farm | Monmouthshire | AGR Group | 3 MW |
| Home Farm | Vale of Glamorgan | Cenin Renewables Limited | 3 MW |
| Maerdy extension | Rhondda Cynon Taf | Greencoat UK Wind | 3 MW |
| Morfa Ynys Farmlands | Carmarthenshire | Energi Generation | 3 MW |
| New Lodge Farm - AD | Carmarthenshire | Clean Power Properties | 3 MW |
| New Lodge Farm - Solar | Carmarthenshire | Clean Power Properties | 3 MW |
| Newhouse Farm, Canaston Bridge - Wind Turbines | Pembrokeshire | Slebech Investment Limited | 3 MW |
| Stormy Down (Waste AD) | Bridgend | Severn Trent | 3 MW |
| Elan Valley Hydro Scheme | Powys | Dwr Cymru Welsh Water | 2.9 MW |
| Llandulas Landfill Scheme | Conwy | Waste Recycling Group | 2.9 MW |
| Pant Cefn Farm | Ceredigion | Belvedere Energy Developments | 2.9 MW |
| Land at Morfa Camp | Gwynedd | Novus Solar Developments | 2.8 MW |
| Brynpica Landfill Site | Rhondda Cynon Taf | Novera | 2.7 MW |
| Silent Valley Landfill Scheme | Blaenau Gwent | Novera | 2.7 MW |
| Braint Wind Farm | Isle of Anglesey | West Coast Energy | 2.6 MW |
| Hafoty Ucha '2' and '3' Wind Turbine | Conwy | — | 2.6 MW |
| Land at Darran Farm | Caerphilly | SRE | 2.6 MW |
| Lluest Wen Energy Centre | Bridgend | — | 2.6 MW |
| Moel Maelogen A | Conwy | John Laing Environmental Assets Group | 2.6 MW |
| Cardiff Dock Heat and Power | Cardiff | Bioflame | 2.5 MW |
| Crymlyn Burrows EfW Incinerator | Neath Port Talbot | E R I Neath Port Talbot | 2.5 MW |
| Cwm Nant Gwyn | Bridgend | Solar IQ | 2.5 MW |
| Fferm Penglais - Solar Farm | Ceredigion | Aberystwyth University | 2.5 MW |
| Graig Fatha Farm | Rhondda Cynon Taf | Cleanearth | 2.5 MW |
| Land West of Roberts Wall Far | Pembrokeshire | Navitas Project | 2.5 MW |
| Langstone Court Road Solar Farm | Newport | — | 2.5 MW |
| Maesgwyn Wind Farm - extension | Neath Port Talbot | Pennant Walters | 2.5 MW |
| Nash Waste Water Treatment Works Turbine | Newport | Welsh Water | 2.5 MW |
| Parc Stormy, Stormy Down | Bridgend | Cenin Renewables Limited | 2.5 MW |
| Land on Park Farm | Gwynedd | Navitas Project | 2.4 MW |
| New Inn AD (Waste AD) | Torfaen | Shanks Group | 2.4 MW |
| Rheidol Wind Farm | Ceredigion | Powergen | 2.4 MW |
| Withyhedge Generation Plant | Pembrokeshire | — | 2.4 MW |
| ANP Newport Wind Turbine | Newport | Associated British Ports | 2.3 MW |
| G24 Innovations Turbine | Cardiff | G24 Innovations Limited | 2.3 MW |
| Pen y Bont | Wrexham | Waste Recycling Group | 2.3 MW |
| PwllfaWatkin AD Plant (Waste AD) | Neath Port Talbot | Waste Recycling Group | 2.3 MW |
| Briton / Neath | Neath Port Talbot | Natural Power | 2.2 MW |
| Land At Court Farm | Vale of Glamorgan | Sybac Solar International GmbH | 2.2 MW |
| Rhoscrowther Wind Cluster | Pembrokeshire | Three Way Wind Ltd +1 | 2.2 MW |
| Ruabon | Wrexham | Waste Recycling Group | 2.1 MW |
| Briton Ferry | Neath Port Talbot | Neath Port Talbot Waste Management Co Ltd | 2 MW |
| Cardiff Organic Waste Treatment Project | Cardiff | Kelda Organic Energy | 2 MW |
| Clearwell Farm - solar | Newport | Heritage Energy | 2 MW |
| Dark Lane (Astbury) Landfill Scheme | Wrexham | Waste Recycling Group | 2 MW |
| Docksway Landfill Scheme | Newport | Renewable Power Systems | 2 MW |
| Flint Landfill Site Castle Park | Flintshire | Flintshire County Council | 2 MW |
| Morfa Farm | Vale of Glamorgan | Lightsource Renewable Energy | 2 MW |
| Timet UK | Swansea | Timet UK | 2 MW |
| Kingspan | Flintshire | Kingspan | 1.8 MW |
| Pen-Y-Fan Industrial Estate | Caerphilly | Sirius Renewable Energy | 1.8 MW |
| Fochriw Wind | Merthyr Tydfil | Eco2 | 1.7 MW |
| Magor Brewery | Monmouthshire | PerPetum Sun | 1.7 MW |
| Seaview Farm | Bridgend | — | 1.7 MW |
| Crumps Yard Solar Farm | Flintshire | Flintshire County Council | 1.6 MW |
| Lawrence Landfill | Pembrokeshire | Wind Energy Direct | 1.6 MW |
| Morfa Pingett Solar Farm | Carmarthenshire | Richard Thomas and Co Limited | 1.6 MW |
| Princes Gate Spring Water | Pembrokeshire | Princes Gate Spring Water | 1.6 MW |
| Tyn y Pant | Powys | Solar Power Parks | 1.6 MW |
| Aberporth Solar Farm | Ceredigion | JBM Solutions | 1.5 MW |
| Aldi - Cardiff | Cardiff | Aldi | 1.5 MW |
| Bodtegir | Conwy | Clean Earth Energy Limited | 1.5 MW |
| Cwmbargoed Disposal Point | Caerphilly | Clean Earth | 1.5 MW |
| Land At Pen Y Fan | Caerphilly | Clenergy | 1.5 MW |
| Longlands Lane | Neath Port Talbot | Renewable Energy Systems | 1.5 MW |
| Malthouse Farm | Rhondda Cynon Taf | Infinite Renewables Limited | 1.5 MW |
| Pistyllgwyn Farm | Carmarthenshire | Power for Wales Inc | 1.5 MW |
| Pont Andrew Solar Farm | Carmarthenshire | Lightsource Renewable Energy | 1.5 MW |
| West of Rhiwfelin Fach Farm | Rhondda Cynon Taf | Infinite Renewables Limited | 1.5 MW |
| Principality Stadium, Westgate Street - Solar panels | Cardiff | Millennium Stadium Plc | 1.49 MW |
| Dura Park Bynea Industrial Site | Carmarthenshire | Short Bros Homes | 1.4 MW |
| Gelliargwellt Uchaf Farm AD | Caerphilly | Bryn Group | 1.4 MW |
| Nant y Caws Landfill Site | Carmarthenshire | Novera | 1.4 MW |
| Lygan Uchaf Farm Wind Turbine | Flintshire | ReSence | 1.3 MW |
| Trehir Generation Project | Caerphilly | Infinis +1 | 1.3 MW |
| Rhas Fach Farm | Carmarthenshire | Power for Wales Inc | 1.2 MW |
| Rhug Estate | Denbighshire | Rhug Estate | 1.2 MW |
| Tythegston Landfill Site | Bridgend | Renewable Power Generation Ltd | 1.2 MW |
| Caban Coch | Powys | Dwr Cymru Welsh Water | 1.1 MW |
| Blaenffos Wind Turbines | Carmarthenshire | — | 1 MW |
| Bryn Pica AD / Tomorrow's Valley (Waste AD) - resubmission | Rhondda Cynon Taf | Ancala Bioenergy | 1 MW |
| Bryn Posteg Landfill Site - Solar Array & Battery Storage | Powys | Potters Waste Management | 1 MW |
| Court Colman | Bridgend | Solar Energy Farm | 1 MW |
| Killan Farm Solar Array Extens | Swansea | Y Felin Ddwr Charitable Trust | 1 MW |
| Knolton Farmhouse Cheese Solar Farm | Wrexham | Pegasus Group | 1 MW |
| Lodge Farm 1 | Pembrokeshire | — | 1 MW |
| Maesgwyn Anaerobic Digestion Facility (Waste AD) | Neath Port Talbot | Green Energy | 1 MW |
| MELIN, Pen Y Bank | Pembrokeshire | — | 1 MW |
| Pen yr Heol Las Farm | Caerphilly | — | 1 MW |
| Pengarnddu Industrial Estate - Biomass Recycling Plant | Merthyr Tydfil | Merthyr Tydfil County Borough Council | 1 MW |
| Penyrheol Las Farm | Caerphilly | — | 1 MW |
| Rhosygilwen Solar Farm | Pembrokeshire | — | 1 MW |
| Sluvad Road Water Treatment Works | Torfaen | Dwr Cymru Welsh Water | 1 MW |
| Waen Biogas (Waste AD) | Denbighshire | Ancala Bioenergy | 1 MW |
| Webbsfield | Swansea | Gower Power Community Cooperative | 1 MW |
| Cilfynydd Green Energy Centre | — | — | — |
| Connah's Quay | — | — | — |
| East Pit | — | — | — |
| ER TWD Energy | — | — | — |
| IPC Grid Tremorfa | — | — | — |
| Legacy Green Energy Centre | — | — | — |
| Maen Hir Solar and Energy Storage Project | Isle of Anglesey | Lightsource BP | — |
| NatPower Gwyddelwern Green Energy Park | — | — | — |
| Pembroke Power Station | — | — | — |
| Pentir Green Energy Centre | — | — | — |
| Severn Power | — | — | — |
| Swansea North Green Energy Centre | — | — | — |
| Trawsfynydd B Cwmni Egino | — | — | — |
| Wylfa Newydd Nuclear Power Station | Isle of Anglesey | Horizon Nuclear Power | — |
| Gwynt Glas Offshore Wind Farm planned | — | Gwynt Glas Offshore Wind Farm Limited | 1,500 MW |
| Mona Offshore Wind Farm permitted | — | Mona Offshore Wind Limited | 1,500 MW |
| Connah’s Quay Low Carbon Power Project planned | Flintshire | Uniper UK Limited | 1,380 MW |
| Rover Way, Splott - Energy Park & Data Centre permitted | Cardiff | Latos Cardiff Limited | 1,000 MW |
| Awel y Môr Offshore Wind Farm permitted | — | Awel y Mor Offshore Wind Farm Limited +1 | 500 MW |
| South Hook Combined Heat & Power Station permitted | Pembrokeshire | QPI Global Ventures Ltd | 500 MW |
| Tyn Y Coed - Battery Energy Storage System planned | Flintshire | NatPower UK | 500 MW |
| Castle Road, Burton - Battery Energy Storage System planned | Vale of Glamorgan | Rewe 7 Limited | 440 MW |
| Bronwylfa Road, Rhostyllen - Energy Storage System planned | Wrexham | Innova Renewables Limited | 400 MW |
| Lletty Scilp Farm, Swansea North - Energy Storage System permitted | Swansea | Innova Renewables Limited | 400 MW |
| Goldborough Road, Hundleton - Battery Energy Storage permitted | Pembrokeshire | Pembroke Green Limited | 350 MW |
| Pembroke Power Station, Pwllcrochan - Battery Storage permitted | Pembrokeshire | RWE Generation UK Plc | 350 MW |
| Penrhos Works - Battery Energy Storage System permitted | Isle of Anglesey | Anglesey Land Holdings Limited | 349 MW |
| Carrog Ganol, Rhosgoch - Battery Energy Storage System permitted | Isle of Anglesey | Boom Developments Limited | 300 MW |
| Abergelli Power permitted | Swansea | Abergelli Power Limited | 299 MW |
| Hirwaun Power Station permitted | Rhondda Cynon Taf | Hirwaun Power Limited | 299 MW |
| Wrexham Energy Centre permitted | Wrexham | Wrexham Power Limited | 299 MW |
| Abergelli Farm, Felindre - Battery Storage planned | Swansea | EDF Energy Renewables | 250 MW |
| Aberthaw Battery Energy Storage System planned | Vale of Glamorgan | Aberthaw Energy Limited | 249 MW |
| Morlais Demonstration Zone under construction | — | Menter Mon Morlais | 240 MW |
| Uskmouth Power Station - Battery Storage under construction | Newport | Simec Atlantic Energy Uskmouth Power Station | 230 MW |
| Internal Power Generation Enhancement for Port Talbot Steelworks permitted | Neath Port Talbot | Tata Steel UK limited | 225 MW |
| Bryntywod, Llangyfelach - Battery Energy Storage System permitted | Swansea | FRV TH Powertek Limited | 200 MW |
| Cefn Farm, Mount Road - Battery Energy Storage System planned | Rhondda Cynon Taf | Tec Marina | 200 MW |
| National Road, Cilfynydd - Battery Energy Storage System planned | Rhondda Cynon Taf | Rewe 2 Limited | 200 MW |
| Pound Farm Lane - Battery Storage planned | Rhondda Cynon Taf | Pulse Clean Energy | 200 MW |
| Radnor Forest, Llandegley - Nant Mithil Energy Park planned | Powys | Bute Energy | 198 MW |
| Alaw Môn Solar Farm - Solar Farm & Energy Storage Facility permitted | Isle of Anglesey | Enso Energy Limited | 160 MW |
| Wentlooge Renewable Energy Hub planned | Newport | Wentlooge Farmers' Solar Scheme | 125 MW |
| Uskmouth Power Station, West Nash Road - Battery Storage Facility under construction | Newport | AW1 Energy Storage Limited | 120 MW |
| Bodelwyddan, Abergele Road - Solar Farm & Battery Storage planned | Denbighshire | Stantec | 110 MW |
| Bodelwyddan, Abergele Road - Solar Farm & Battery Storage planned | Denbighshire | Stantec | 110 MW |
| Pembroke Power Station, Pwllcrochan - Hydrogen Production Facility permitted | Pembrokeshire | RWE Generation UK Plc | 110 MW |
| Llandinam Windfarm Repowering and Extension permitted | Powys | Eurus Energy +1 | 102 MW |
| Erebus - Floating Offshore Wind Demonstration Project permitted | Pembrokeshire | Simply Blue Energy | 100 MW |
| Rhydypandy Road, Morriston - Battery Energy Storage System permitted | Neath Port Talbot | Statkraft UK Limited | 100 MW |
| Tyddyn Forgan, Llanddeiniolen - Energy Storage System permitted | Gwynedd | Firstway Energy +1 | 100 MW |
| Glyn Rhonwy Pumped Storage permitted | Gwynedd | Snowdonia Pumped Hydro | 99.9 MW |
| Ipswich Road, Cardiff - Battery Storage permitted | Cardiff | Green Frog Power 214 Limited | 93 MW |
| Twyn Hywel Wind Farm permitted | Caerphilly | Bute Energy | 92.4 MW |
| Garn Fach Wind Farm permitted | Powys | EDF Renewables | 85 MW |
| Rush Wall Solar Park planned | Newport | Rush Wall Solar Park | 75 MW |
| Vianshill Farm, Parc Dyffryn - Solar Farm & Battery Storage permitted | Vale of Glamorgan | Cenin Renewables Limited | 65 MW |
| Alwen Forest Project permitted | — | Innogy +1 | 59.4 MW |
| Gaerwen Wind Farm planned | Denbighshire | RWE Renewables UK Limited | 59.4 MW |
| Pentir Substation, Pentir - Battery Energy Storage permitted | Gwynedd | Lightsource BP | 57 MW |
| Plas Power Estate Solar Farm planned | Wrexham | Lightsource BP | 57 MW |
| Plas Power Estate Solar Farm planned | Wrexham | Lightsource BP | 57 MW |
| Mynydd Maen - Wind Farm planned | Torfaen | RES Limited | 54.6 MW |
| Lluest y Gwynt Wind Farm planned | Ceredigion | Eco2 +1 | 50.4 MW |
| Garn Fach Wind Farm permitted | Powys | EDF Renewables | 50 MW |
| Pancross & Oaklands Solar Farm under construction | Vale of Glamorgan | Infinis | 50 MW |
| Pancross & Oaklands Solar Farm under construction | Vale of Glamorgan | Infinis | 50 MW |
| Sully Moors Road - Battery Energy Storage Facility permitted | Vale of Glamorgan | Centrica Plc Head Office | 50 MW |
| Porth Wen under construction | Isle of Anglesey | EDF Energy Renewables | 49.9 MW |
| The Greenlink Converter Station - Lambeeth Battery Energy Storage permitted | Pembrokeshire | Sirius EcoDev Limited | 49.9 MW |
| Esgair Cwmowen planned | Powys | Pennant Walters | 47.5 MW |
| Parc Solar Caenewydd under construction | Swansea | Infinis Solar Developments Limited | 46 MW |
| Carno 3 permitted | Powys | Amegni Renewables | 45 MW |
| Land at Pen Onn - Solar Farm permitted | Vale of Glamorgan | Iolo Energy | 45 MW |
| Parc Solar Caenewydd under construction | Swansea | Infinis Solar Developments Limited | 42 MW |
| Parc Worlton Solar Farm permitted | Vale of Glamorgan | Lightrock Power | 42 MW |
| Penllergaer Solar Farm - Solar Farm planned | Swansea | Ecap Renewables | 40 MW |
| Ty’n y Waun - Solar Farm (Bridgend Energy Hub) permitted | Bridgend | Cenin Renewables Limited | 40 MW |
| Tycroes Solar Farm permitted | Carmarthenshire | Spring Dev 2 | 40 MW |
| Glyntaff Solar Farm, Bryntail Road - Solar Array planned | Rhondda Cynon Taf | Renantis Falck Renewables Limited | 39.9 MW |
| Abertillery - Wind farm planned | Newport | RWE Renewables UK Limited | 39.6 MW |
| Bryngydfa Wind Farm planned | Powys | — | 36 MW |
| Brynrhyd Solar Farm permitted | Carmarthenshire | Capital Dynamics Limited | 36 MW |
| East Aberthaw - Solar farm permitted | Vale of Glamorgan | Low Carbon UK Solar Investment Company Limited | 35 MW |
| Foel Trawsnant permitted | Neath Port Talbot | Pennant Walters | 35 MW |
| Mynydd Maen Solar Farm (Cil-Lonydd) planned | — | Cenin Renewables Limited | 35 MW |
| Mynydd Maen Solar Farm (Cil-Lonydd) permitted | — | Cenin Renewables Limited | 35 MW |
| Parc Solar Traffwll permitted | Isle of Anglesey | Low Carbon Limited | 35 MW |
| Pencoed Ganol Farm, Pendderi Road - Solar Panels planned | Carmarthenshire | Windel Solar 11 Limited | 35 MW |
| Tonmawr - Mynydd Fforch Dwm Wind Farm permitted | Neath Port Talbot | Naturalis Energy Developments Limited | 35 MW |
| Mynydd Carn Wind Farm permitted | Blaenau Gwent | Pennant Walters | 34 MW |
| Mynydd Llanhilleth - Wind Farm planned | Caerphilly | Pennant Walters | 34 MW |
| Penpergwm Solar Farm (Great House Farm) under construction | Monmouthshire | European Energy UK Ltd +1 | 32 MW |
| Alleston Solar Farm permitted | Pembrokeshire | Stantec UK | 30 MW |
| Chosen Park, Baglan Energy Park - Unit 3 - Battery Storage System permitted | Neath Port Talbot | Aldustria Energy Storage | 30 MW |
| Maes Mawr Solar under construction | Rhondda Cynon Taf | Elgin Energy EsCo | 30 MW |
| Mynydd Y Glyn Wind Farm, Rhondda - Wind Turbines permitted | Rhondda Cynon Taf | Pennant Wind Energy Ventures Limited Walters Group | 30 MW |
| Wauntysswg Farm, near Tredagar permitted | Blaenau Gwent | Elgin Energy | 30 MW |
| White House Farm planned | Pembrokeshire | Qair UK | 30 MW |
| Llangennech Solar permitted | Carmarthenshire | Voltalia UK | 29.9 MW |
| Manmoel Wind Farm permitted | Blaenau Gwent | Cenin Renewables Limited | 28 MW |
| Upper Pant-Ysgawen Farm, Maes-Yr-Haf Lane - Battery Energy Storage System planned | Caerphilly | Voltwise Power Holdings Limited | 28 MW |
| Hirddywel planned | Powys | Vattenfall | 27 MW |
| Upper Ogmore Wind Farm permitted | Bridgend | Res UK & Ireland Limited | 25.2 MW |
| Heol Aur, Dafen Industrial Estate - Battery Storage System permitted | Carmarthenshire | Westfa Limited | 25 MW |
| Pencaerlan Solar Farm planned | Neath Port Talbot | Greentech Projects Holding UK Limited | 25 MW |
| Townland of Meenakeeran, Tullycar Road - Wind Farm & Battery Storage planned | Isle of Anglesey | Meenakeeran Wind Farm Limited | 24 MW |
| Brynwell Farm permitted | Vale of Glamorgan | Brynwell Farm Solar Limited | 21 MW |
| Leeway House, Leeway Industrial Estate - Battery Energy Storage System permitted | Newport | Aldustria Limited | 20.6 MW |
| (West Wales) Celtic Freeport - Green Hydrogen Production Facility permitted | Pembrokeshire | MorGen Energy | 20 MW |
| Bryn Henllys permitted | Powys | Lightsource BP | 20 MW |
| Craig Y Perchych, Glais - Solar farm permitted | Swansea | Windel Energy | 20 MW |
| Cwm Ivor Penyrheol Solar Farm permitted | Caerphilly | Caerphilly County Borough Council | 20 MW |
| John Green Frog Power Compound, John North Road - Battery System permitted | Swansea | Green Frog Power Limited | 20 MW |
| Pentre Bach Solar Farm planned | Torfaen | Elgin Energy EsCo | 20 MW |
| Puma Energy Site - Hydrogen Generation Facility permitted | Pembrokeshire | H2 Energy Ecosystem UK | 20 MW |
| Trecelyn Wind Farm planned | Caerphilly | Pennant Walters | 20 MW |
| Melin Court permitted | Neath Port Talbot | Muirhall Energy | 18 MW |
| Pant y Maen permitted | Denbighshire | Gresham House | 17.5 MW |
| Gwenlais Farm, Carmel Road - Gwenlais Solar Farm permitted | Swansea | Solar Securities Group | 16.3 MW |
| Bretton Hall Solar Farm (Wales) permitted | Flintshire | YnNi Newydd | 16 MW |
| Little Llwyn Onn - Solar Farm & Battery Storage permitted | Wrexham | Novus Renewable Services Limited | 16 MW |
| Coed Bach Park, Gwynfryn Road - Solar Panels planned | Swansea | Stellar Energy | 15 MW |
| Pembroke Dockyard - Green Hydrogen Production Facility permitted | Pembrokeshire | Haush Limited | 15 MW |
| Dragon Energy Park - Wind Farm under construction | Pembrokeshire | Dragon LNG Limited | 14.4 MW |
| Hendy Wind Farm under construction | Powys | Njord Energy Ltd | 14.4 MW |
| Bretton Hall Solar Farm (England) permitted | Flintshire | YnNi Newydd | 14 MW |
| Abergorki Wind Farm permitted | Rhondda Cynon Taf | Thrive Renewables | 13.5 MW |
| White House Farm planned | Pembrokeshire | Qair UK | 12 MW |
| Blackberry Lane - Solar Farm permitted | Pembrokeshire | Wessex Solar Energy | 9.99 MW |
| Dyffryn Farm, Ynysmaerdy - Solar Panels planned | Rhondda Cynon Taf | Windel Solar 8 Limited | 9.9 MW |
| Little Llwyn Onn - Solar Farm & Battery Storage permitted | Wrexham | Novus Renewable Services Limited | 9.9 MW |
| Rhyd-y-Groes Wind Farm - repowering permitted | Isle of Anglesey | Eurus | 9.9 MW |
| Talbot Green, Llantrisant - Solar Farm permitted | Rhondda Cynon Taf | Windel Energy | 9.9 MW |
| Rhigos Road - Solar Farm under construction | Rhondda Cynon Taf | Regener8 Power Limited +1 | 9.88 MW |
| West Farm, Cosheston - Solar Farm under construction | Pembrokeshire | One Planet Developments Limited | 9 MW |
| MOD Pendine, Llanmiloe - Solar Panels permitted | Carmarthenshire | QinetiQ | 8.8 MW |
| Glyngwernen Farm, Uchaf Fawr - Solar Farm permitted | Carmarthenshire | Bartypower Limited | 8.36 MW |
| Pengarnddu Industrial Estate, Dowlais - Hydrogen Electrolyser Plant Facility permitted | Merthyr Tydfil | Conrad Energy Limited | 8 MW |
| Rassau Industrial Estate, Rassau - Battery Energy Storage permitted | Blaenau Gwent | — | 8 MW |
| Coleshill Manufacturing, Coleshill Street - Coleshill Green Hydrogen Project permitted | Flintshire | HYRO Energy Limited | 7.5 MW |
| Llwyncelyn Wind Farm planned | Rhondda Cynon Taf | Cenin Renewables Limited | 7.2 MW |
| Milford Haven Wave Dragon Pre-Commercial Demonstrator planned | — | — | 7 MW |
| Aston Martin Lagonda, Llanmaes - Solar Pv Panels permitted | Vale of Glamorgan | Aston Martin Lagonda | 6 MW |
| Coed Ely - Solar Farm under construction | Rhondda Cynon Taf | Rhondda Cynon Taff County Borough Council | 6 MW |
| HyBont Green Hydrogen permitted | Bridgend | Hygen Energy Holdings | 6 MW |
| Rassau Industrial Estate under construction | Blaenau Gwent | — | 6 MW |
| Maelor Gasworks - Solar Farm & Battery Storage permitted | Wrexham | Novus Renewable Services Limited | 5.7 MW |
| Carn Nicholas Farm under construction | Swansea | Suncredit UK | 5 MW |
| Pant y Wal (Extension) permitted | Bridgend | Pennant Walters | 5 MW |
| Tymaen Farm, Rhos - Solar Panels planned | Carmarthenshire | Carmarthenshire County Council | 4.9 MW |
| Ty Du Uchaf, Pentreuchaf - Solar Panels planned | Gwynedd | Hari Parry | 4.83 MW |
| Mynydd Pencarreg permitted | Carmarthenshire | Energiekontor UK | 4.6 MW |
| Bluestone National Park Resort, Canaston Wood - Solar Farm planned | Pembrokeshire | Bluestone Resorts Limited | 4 MW |
| North Court Farm, Redwick - Wind Turbine planned | Newport | Clean Earth Energy Limited | 3.5 MW |
| Tir John Solar Farm permitted | Swansea | Swansea City and County Council | 3 MW |
| Ty Coch Hollybush Way permitted | Torfaen | Torfaen CBC | 3 MW |
| Pioneer 2 - Hydrogen Production Facility under construction | Neath Port Talbot | Protium Green Hydrogen Supply Limited | 2.5 MW |
| The Ffaldau Waste Re Cycling Centre, Llandegley - CHP permitted | Powys | Powys Environmental Limited | 2.5 MW |
| Docks Way Solar Farm permitted | Newport | Newport City Council | 2.37 MW |
| Mynydd y Gwryhd Solar Farm permitted | Neath Port Talbot | Awel Aman Tawe | 2.3 MW |
| Biffa Waste Services, Fochriw Road - Battery Storage permitted | Caerphilly | Biffa Waste Services Limited | 2 MW |
| Glyngwernen Farm, Uchaf Fawr - Battery Storage permitted | Carmarthenshire | Bartypower Limited | 2 MW |
| Nantycaws Waste Management Facility, Llanddarog - Solar Farm permitted | Carmarthenshire | CWM Environmental Limited | 2 MW |
| Trewyn Bach, Clawdd Poncen - Solar Panels planned | Denbighshire | Mark & Nadine Budgen | 2 MW |
| The Gaer - Solar Array permitted | Powys | — | 1.87 MW |
| New Venture Buildings, Caswell Way - Solar Array permitted | Newport | Bisley Office Equipment Limited | 1.8 MW |
| Ystradffin Hydropower Project under construction | Carmarthenshire | Hydro Electric Development | 1.8 MW |
| Aerospace Business Park permitted | Vale of Glamorgan | Cenin Renewables Limited | 1.5 MW |
| Former Nant-y-Gwyddon Landfill Site under construction | Rhondda Cynon Taf | Sirius Group | 1.5 MW |
| Hendir Uchaf Farm, Minffrwd Road - Solar Array planned | Bridgend | Shillibier Limited | 1.5 MW |
| Kenfig Industrial Estate, Margam - Wind turbine permitted | Neath Port Talbot | Infinite Renewables Group Limited | 1.5 MW |
| Rassau Industrial Estate permitted | Blaenau Gwent | Infinite Renewables Limited | 1.5 MW |
| Pen Y Dre High School, Goitre Lane - Solar Panels permitted | Merthyr Tydfil | Merthyr Tydfil County Borough Council | 1.4 MW |
| Momentive Speciality Chemicals, Sully Moors Road - Solar Panels permitted | Vale of Glamorgan | Bakelite Synthetics Uk Limited | 1.3 MW |
| Sun Fields, Gelli Bwch Farm -Solar Array permitted | Neath Port Talbot | Hale Construction Limited | 1.3 MW |
| Whitehall Farm, Llanharry Road - Solar PV Panels under construction | Rhondda Cynon Taf | Mccarthy Contractors Limited | 1.3 MW |
| Heartsease Farm - Solar Array permitted | Powys | Radnor Hills Limited | 1.2 MW |
| Coppice Farm, Pen-Rhos - Solar Array permitted | Powys | Coppice Farm | 1.15 MW |
| Panasonic Manufacturing, Pentwyn - BESS under construction | Cardiff | Panasonic Manufacturing UK | 1.08 MW |
| The Bungalow, Kus Industrial Estate - Solar Photovoltaic Panels permitted | Flintshire | Boardlink Limited | 1.05 MW |
| Euroclad Group, Wentloog Road - Solar Panels permitted | Cardiff | Euroclad Group Limited | 1.04 MW |
| Docks Way - Solar Panels permitted | Newport | Newport City Council | 1.01 MW |
| Brynwhilach Solar Farm, Morriston - Battery Storage permitted | Swansea | Swansea Bay University Health Board | 1 MW |
| Daisy Cottage, Ty-Canol Road - Solar Panels permitted | Monmouthshire | — | 1 MW |
| Docks Way Disposal Site, Docks Way - Battery Energy Storage System permitted | Newport | Newport City Council | 1 MW |
| Dyserth Falls Resort, Allt Y Graig - Biomass Boilers permitted | Denbighshire | Lyons Holiday Parks Limited | 1 MW |
| Langdon Mill under construction | Pembrokeshire | Langdon Enterprises | 1 MW |
| Pembrey Road - Ground Mounted Solar Panels permitted | Carmarthenshire | Gravells Limited | 1 MW |
| Rehau Plastics, Pencefn Road - Solar Panels permitted | Gwynedd | Blaenau Plastics Ltd | 1 MW |
| Y Tyddyn Teg, Heol Y Nant - Solar Farm permitted | Carmarthenshire | Power on Demand Limited | 1 MW |
| Future Energy Llanwern Solar Project planned | Newport | Future Energy Llanwern Limited | — |