List of power stations in Wales

This is a list of electricity-generating power stations in Wales, sorted by type and name, with installed capacity (May 2007).

Note that the DBERR maintains a comprehensive list of operational UK power stations here:[1]

Nuclear power stations

Nuclear power stations

Name Location Coordinates Output Notes
Trawsfynydd Gwynedd 52°55′29.51″N 3°56′54.38″W / 52.9248639°N 3.9484389°W / 52.9248639; -3.9484389 (Trawsfynydd nuclear power station) 470 MW (Decommissioned in 1991)
Wylfa Anglesey 53°25′00″N 4°29′00″W / 53.41667°N 4.48333°W / 53.41667; -4.48333 (Wylfa) 980 MW (Decommissioned in 2015)

Coal-fired

Coal-fired power stations:

Name Location Coordinates Output Notes
Aberthaw power stations Vale of Glamorgan 51°23′14″N 3°24′18″W / 51.38722°N 3.40500°W / 51.38722; -3.40500 (Aberthaw Power Station) 1,500 MW (Decommissioned in 2020)
Uskmouth A Power Station Near Newport 51°32′57″N 2°58′14″W / 51.54917°N 2.97056°W / 51.54917; -2.97056 (Uskmouth Power Station) 228 MW (Decommissioned in 1981)
Uskmouth B Power Station Near Newport 51°32′57″N 2°58′14″W / 51.54917°N 2.97056°W / 51.54917; -2.97056 (Uskmouth Power Station) 393 MW Initially burning coal with intermittent biomass firing up until 2017, planned conversion to burn biomass and waste abandoned.[1] Decommissioned by 2024.[2]
Cardiff power stations Cardiff 51°29′42″N 3°8′45″W / 51.49500°N 3.14583°W / 51.49500; -3.14583 (Cardiff Power Station) 87.6 MW Commissioned 1894 operational until late 1960s
Carmarthen Bay Power Station Burry Port 51°40′47″N 4°14′35″W / 51.67972°N 4.24306°W / 51.67972; -4.24306 (Carmarthen Bay Power Station) 360 MW (Decommissioned in 1984)
Llanelly Power Station[3] Llanelli 51°41′33″N 4°10′15″W / 51.69250°N 4.17083°W / 51.69250; -4.17083 (Llanelly Power Station) 24 MW operating until 1967
Marchwiel Power Station Wrexham 53°01′55″N 2°55′25″W / 53.03194°N 2.92361°W / 53.03194; -2.92361 (Marchwiel Power Station) 12.41 MW operating until 1959
Newport power stations Newport 51°35′11″N 2°59′08″W / 51.58639°N 2.98556°W / 51.58639; -2.98556 (Newport Power Station) 80 MW operating 1895 to late 1970s
Rogerstone power station Rogerstone near Newport 126 MW (Decommissioned in 1984)
Llynfi Power Station[3] Bridgend 51°34′13″N 3°36′40″W / 51.57028°N 3.61111°W / 51.57028; -3.61111 (Llynfi Power Station) 120 MW (Decommissioned in 1977)
Tir John Power Station Swansea 51°37′35″N 3°53′50″W / 51.62639°N 3.89722°W / 51.62639; -3.89722 (Tir John Power Station) 142 MW Oil-fired from 1967 (Decommissioned in 1976)
Upper Boat Power Station Pontypridd 51°34′34″N 3°18′07″W / 51.57611°N 3.30194°W / 51.57611; -3.30194 (Upper Boat Power Station) 144 MW (Decommissioned in 1972)
Penarth power station 2.2 MW Operating 1948/9, closed by 1958/9[4]
Bridgend power station 2.0 MW Operating 1948/9, closed by 1958/9[4]
Pontypridd power station 1.8 MW Operating 1948/9, closed by 1958/9[4]
Penydarren power station 0.52 MW Operating 1948/9, closed by 1958/9[4]

Gas-fired (or combined gas/coal)

Gas (or combined gas/coal) fired power stations:

Name Location Coordinates Output Notes
Baglan Bay Power Station Neath Port Talbot 51°37′11″N 3°49′47″W / 51.61972°N 3.82972°W / 51.61972; -3.82972 (Baglan Bay power station) 582 MW[5] Closed in 2020
Barry Power Station Vale of Glamorgan 51°24′29″N 3°13′43″W / 51.40806°N 3.22861°W / 51.40806; -3.22861 (Barry Power Station) 245 MW Decommissioned March 2019[6]
Connah's Quay Power Station Flintshire 53°13′56″N 3°04′53″W / 53.23222°N 3.08139°W / 53.23222; -3.08139 (Connah's Quay Power Station) 1,380 MW Originally coal-fired PF, 6x Parsons 30 MW turbines. Commissioned 1955.[3]
Deeside Power Station Flintshire 53°14′02″N 3°02′02″W / 53.23389°N 3.03389°W / 53.23389; -3.03389 (Deeside Power Station) 500 MW
Pembroke Power Station Pembroke 51°40′59″N 4°59′18″W / 51.68306°N 4.98833°W / 51.68306; -4.98833 (Pembroke Power Station) 2,000 MW (Planning approved 2009), operational 2012
Severn Power Station Uskmouth 51°32′52″N 2°58′35″W / 51.54778°N 2.97639°W / 51.54778; -2.97639 (Severn Power Station) 824 MW Mothballed August 2020[7]
Shotton Power Station Flintshire 53°14′02″N 3°01′58″W / 53.23389°N 3.03278°W / 53.23389; -3.03278 (Shotton Power Station) 210 MW CHP (decommissioned 2012)[8]
BioGen Gwyriad Gwynedd 53°02′52″N 2°59′35″W / 53.047741°N 2.993057°W / 53.047741; -2.993057 (BioGen Gwyriad) 3.5 MW Biogas[9]

Hydro-electric

Further information: Hydroelectricity in the United Kingdom

Hydro-electric power stations:

Name Location Coordinates Output Notes
Cwm Dyli hydro Power Station[3] Gwynedd 10 MW commissioned 1906 operational
Dinorwig Power Station Gwynedd 53°7′7″N 4°6′50″W / 53.11861°N 4.11389°W / 53.11861; -4.11389 (Dinorwig Power Station) 1,728 MW (pumped storage)
Dolgarrog Power Station Conwy (county borough) 53°11′28″N 3°50′33″W / 53.19111°N 3.84250°W / 53.19111; -3.84250 (Dolgarrog Power Station) 28 MW commissioned 1907 operational 2020
Dolgelley Power Station Dolgellau 148 kW hydro + oil engine
Ffestiniog Power Station Gwynedd 52°58′51″N 3°58′8″W / 52.98083°N 3.96889°W / 52.98083; -3.96889 (Ffestiniog Power Station) 360 MW (pumped storage)
Machynlleth A Power Station Powys 250 kW hydro + oil engine[3]
Maentwrog Power Station[3] Gwynedd 52°56′10″N 4°0′15″W / 52.93611°N 4.00417°W / 52.93611; -4.00417 (Maentwrog Power Station) 30 MW commissioned 1928, refitted 1988-92
Rheidol Power Station Ceredigion 52°23′46″N 3°54′00″W / 52.39611°N 3.90000°W / 52.39611; -3.90000 (Rheidol Power Station) 56 MW
River Tawe Barrage Swansea 51°36′58″N 3°55′44″W / 51.61611°N 3.92889°W / 51.61611; -3.92889 (Swansea Bay barrage) 200 kW
Towyn Power Station[3] Tywyn 950 kW hydro + oil engine
Radyr Hydro Scheme Cardiff 51°31′9.79″N 3°15′13.50″W / 51.5193861°N 3.2537500°W / 51.5193861; -3.2537500 (Radyr Hydro Scheme) 394 kW Hydro (River Weir Screw Turbines)
Llys-y-frân Reservoir[10] Pembrokeshire 51°52′5″N 4°51′08″W / 51.86806°N 4.85222°W / 51.86806; -4.85222 (Llys-y-frân Dam) 37 kW
Gafr Hydro[11] Gwynedd 53°06′22″N 4°04′53″W / 53.10611°N 4.08139°W / 53.10611; -4.08139 (Gafr Hydro) 350 kW
Strata Florida Water Treatment Works[10] Ceredigion 52°16′39.5″N 3°49′29.7″W / 52.277639°N 3.824917°W / 52.277639; -3.824917 (Strata Florida Water Treatment Works) 140 kW
Llyn Brianne Reservoir[10] Carmarthenshire 52°07′10.3″N 3°45′59.8″W / 52.119528°N 3.766611°W / 52.119528; -3.766611 (Llyn Brianne Reservoir) 4.6 MW
Bryn Cowlyd Upper[10] Conwy (county borough) 53°10′12.2″N 3°51′39.2″W / 53.170056°N 3.860889°W / 53.170056; -3.860889 (Bryn Cowlyd Upper) 200 kW
Bryn Cowlyd Lower[10] Conwy (county borough) 53°10′35.9″N 3°50′45.6″W / 53.176639°N 3.846000°W / 53.176639; -3.846000 (Bryn Cowlyd Lower) 200 kW
Caban Coch Reservoir[10] Powys 52°16′06.7″N 3°34′33.6″W / 52.268528°N 3.576000°W / 52.268528; -3.576000 (Caban Coch Reservoir) 950 kW
Pen-y-garreg, Craig Goch and Claerwen Reservoirs[10] Powys 52°15′46.4″N 3°36′21.9″W / 52.262889°N 3.606083°W / 52.262889; -3.606083 (Elan Valley Reservoirs) 2.91 MW 3 turbines, one on each reservoir
Cwmorthin Hydro[10] Gwynedd 52°59′41.3″N 3°58′10.1″W / 52.994806°N 3.969472°W / 52.994806; -3.969472 (Cwmorthin Hydro) 410 kW
Ffestiniog Hydroelectric[10] Gwynedd 52°58′31.0″N 3°56′44.9″W / 52.975278°N 3.945806°W / 52.975278; -3.945806 (Ffestiniog Hydroelectric) 710 kW
Llyn Celyn Reservoir[10] Gwynedd 52°56′42.8″N 3°40′06.1″W / 52.945222°N 3.668361°W / 52.945222; -3.668361 (Llyn Celyn Reservoir) 4.5 MW
Alwen Water Treatment Works[10] Denbighshire 53°03′45.4″N 3°33′22.3″W / 53.062611°N 3.556194°W / 53.062611; -3.556194 (Alwen Water Treatment Works) 37 kW
Brenig Reservoir[10] Denbighshire 53°04′23.1″N 3°31′53.6″W / 53.073083°N 3.531556°W / 53.073083; -3.531556 (Brenig Reservoir) 60 kW
Cefn Dryscoed Water Treatment Works[10] Powys 51°46′22.3″N 3°34′58.7″W / 51.772861°N 3.582972°W / 51.772861; -3.582972 (Cefn Dryscoed Water Treatment Works) 70 kW
Crai Water Treatment Works[10] Powys 51°50′31.5″N 3°40′08.0″W / 51.842083°N 3.668889°W / 51.842083; -3.668889 (Crai Water Treatment Works) 90 kW
Dolbenmaen Water Treatment Works[10] Gwynedd 52°57′48.6″N 4°14′07.6″W / 52.963500°N 4.235444°W / 52.963500; -4.235444 (Dolbenmaen Water Treatment Works) 89 kW
Eithynfynydd Water Treatment Works[10] Gwynedd 52°46′27.9″N 4°04′29.0″W / 52.774417°N 4.074722°W / 52.774417; -4.074722 (Eithynfynydd Water Treatment Works) 30 kW
Preseli Water Treatment Works[10] Pembrokeshire 51°55′05.0″N 4°49′03.9″W / 51.918056°N 4.817750°W / 51.918056; -4.817750 (Preseli Water Treatment Works) 37 kW
Pen Y Cefn Water Treatment Works[10] Gwynedd 52°44′58.7″N 3°53′07.9″W / 52.749639°N 3.885528°W / 52.749639; -3.885528 (Pen Y Cefn Water Treatment Works) 12 kW
Tyn Y Waun Water Treatment Works[10] Rhondda Cynon Taf 51°40′55.7″N 3°32′47.8″W / 51.682139°N 3.546611°W / 51.682139; -3.546611 (Tyn Y Waun) 90 kW

Oil-fired

Oil-fired power stations:

Name Location Coordinates Output Notes
Aberystwyth Power Station Ceredigion 52°24′45″N 4°5′3″W / 52.41250°N 4.08417°W / 52.41250; -4.08417 (Aberystwyth Power Station) 5.0 MW Diesel fired generators, closed by 1978
Haverfordwest Power Station[3] Pembrokeshire 8.465 MW Oil engines (8) operational 1959
Machynlleth A and B power stations Powys 522 kW (A), 4.258 MW (B) Diesel fired generators, closed by 1978
Milford Haven Power Station Pembrokeshire 815 kW Oil engines, closed 28 February 1958
Pembroke Power Station Pembrokeshire 51°40′59″N 4°59′18″W / 51.68306°N 4.98833°W / 51.68306; -4.98833 (Pembroke Power Station) 2,000 MW closed 1999, now demolished
Lampeter power station 400 kW Internal combustion (diesel), Operating 1948/9, closed by 1958/9[4]
Llandrindod Wells power station 231 kW Internal combustion (diesel), Operating 1948/9, closed by 1958/9[4]
St Clears power station 113 kW Internal combustion (diesel), Operating 1948/9, closed by 1958/9[4]
Aberayron power station 100 kW Internal combustion (diesel), Operating 1948/9, closed by 1958/9[4]

Wind power

Wind power generating facilities:

Name Location Coordinates Output Notes
Alltwalis Wind Farm Carmarthenshire 51°58′24″N 4°15′3″W / 51.97333°N 4.25083°W / 51.97333; -4.25083 (Alltwalis Wind Farm) 23 MW
Brechfa Forest Wind Farm Gwernogle, Carmarthenshire 90 MW
Carno wind farm Carno, Powys, Mid Wales 52°33′1″N 3°36′1″W / 52.55028°N 3.60028°W / 52.55028; -3.60028 (Carno wind farm) 49 MW
Cefn Croes wind farm Ceredigion 52°24′18″N 3°45′03″W / 52.40500°N 3.75083°W / 52.40500; -3.75083 (Cefn Croes) 58.5 MW
Moel Maelogen Conwy 53°08′07″N 3°43′25″W / 53.13528°N 3.72361°W / 53.13528; -3.72361 (Moel Maelogen) 14.3 MW
North Hoyle Offshore Wind Farm Liverpool Bay 53°26′N 3°24′W / 53.433°N 3.400°W / 53.433; -3.400 (North Hoyle Offshore Wind Farm) 60 MW
Pen y Cymoedd Neath 51°41′01″N 03°41′01″W / 51.68361°N 3.68361°W / 51.68361; -3.68361 (Pen y Cymoedd wind farm) 228 MW
Rhyd-y-Groes Anglesey 7.0 MW
Rhyl Flats Liverpool Bay 53°22′N 03°39′W / 53.367°N 3.650°W / 53.367; -3.650 (Rhyl Flats) 90 MW
Gwynt y Môr Irish Sea 53°27′N 03°35′W / 53.450°N 3.583°W / 53.450; -3.583 (Gwynt y Môr) 576 MW (consent granted 2008, construction began 2011)

Anaerobic Digesters

Anaerobic digester generating facilities:

Name Location Coordinates Output Notes
Cardiff East Wastewater Treatment Works[12] Cardiff 51°28′39.3″N 3°8′12.4″W / 51.477583°N 3.136778°W / 51.477583; -3.136778 (Cardiff East Wastewater Treatment Works) 4.2 MW Anaerobic Digestion with Combined Heat and Power
Afan Wastewater Treatment Works[12] Neath Port Talbot 51°34′16.3″N 3°47′21.9″W / 51.571194°N 3.789417°W / 51.571194; -3.789417 (Afan Wastewater Treatment Works) 3.0 MW Anaerobic Digestion with Combined Heat and Power
Five Fords Wastewater Treatment Works[12] Wrexham 53°01′29.4″N 2°56′57.1″W / 53.024833°N 2.949194°W / 53.024833; -2.949194 (Five Fords Wastewater Treatment Works) 1.2 MW Anaerobic Digestion with Gas to Grid and Combined Heat and Power
Cog Moors Wastewater Treatment Works[12] Vale of Glamorgan 51°25′10.0″N 3°12′22.1″W / 51.419444°N 3.206139°W / 51.419444; -3.206139 (Cog Moors Wastewater Treatment Works) 390 kW Anaerobic Digestion with Combined Heat and Power
Kinmel Bay Wastewater Treatment Works[12] Conwy County 53°17′39.2″N 3°31′17.3″W / 53.294222°N 3.521472°W / 53.294222; -3.521472 (Kinmel Bay Wastewater Treatment Works) 190 kW Anaerobic Digestion with Combined Heat and Power
Llanfoist Wastewater Treatment Works[12] Monmouthshire 51°48′49.1″N 3°01′03.6″W / 51.813639°N 3.017667°W / 51.813639; -3.017667 (Llanfoist Wastewater Treatment Works) 177 kW Anaerobic Digestion with Combined Heat and Power
Swansea Bay Wastewater Treatment Works[12] Swansea 51°37′13.6″N 3°53′42.1″W / 51.620444°N 3.895028°W / 51.620444; -3.895028 (Swansea Bay Wastewater Treatment Works) 580 kW Anaerobic Digestion with Combined Heat and Power
Queensferry Wastewater Treatment Works[12] Flintshire 53°12′24.4″N 3°00′54.7″W / 53.206778°N 3.015194°W / 53.206778; -3.015194 (Flintshire Wastewater Treatment Works) 190 kW Anaerobic Digestion with Combined Heat and Power

See also

References

  1. ^ "Uskmouth conversion to burn waste abandoned; battery planned for site". newpower.info. 28 April 2022. Retrieved 31 December 2023.
  2. ^ Thomas, Nicholas (13 January 2024). "Battery plant to open on site of Uskmouth B Power Station". South Wales Argus. Retrieved 25 November 2024. The facility will sit alongside the decommissioned Uskmouth B Power Station...
  3. ^ a b c d e f g h Garrett, Frederick C., ed. (1959). Garcke's Manual of Electricity Supply vol.56. London: Electrical Press. pp. A-26 to A-110.
  4. ^ a b c d e f g h Bloomfield, Gerald T. "British Electricity History: South Wales Electricity Board" (PDF). p. Table 7 and Table 8. Retrieved 3 August 2021.
  5. ^ "Baglan Bay | Calon Energy Limited". calonenergy.com. Retrieved 5 August 2019.
  6. ^ Discombe, Matt (7 May 2019). "Barry Power Station set to be demolished after running for 20 years". WalesOnline. Retrieved 30 December 2023.
  7. ^ "Calon Energy's administrators put two power plants in 'dormant state'". BBC News. 24 August 2020. Retrieved 30 December 2023.
  8. ^ "Shotton plant being closed by International Power, risking 32 jobs". WalesOnline. 20 March 2012. Retrieved 30 December 2023.
  9. ^ "Biogen in Wales | Food Recycling in Wales | Biogen". www.biogen.co.uk.
  10. ^ a b c d e f g h i j k l m n o p q r s "Energy Fact Sheets - Hydro.pdf". Dŵr Cymru. Retrieved 17 February 2026.
  11. ^ "Pelton Turbine, Afon Gafr, Nant Peris - Renewables First". Renewables First - The Renewable Energy Company. 30 September 2015. Retrieved 17 February 2026.
  12. ^ a b c d e f g h "Anaerobic Digestion & CHP Factsheet PDF". Dŵr Cymru. Retrieved 18 February 2026.

Citations

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