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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

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)	1500 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 03°08'45"W	87.6 MW	Commissioned 1894 operational until late 1960s
Carmarthen Bay Power Station	Burry Port	51°40′47″N 04°14′35″W	360 MW	(Decommissioned in 1984)
Llanelly power station^[3]	Llanelli	51°41'33"N 04°10'15"W	24 MW	operating until 1967
Marchwiel power station	Wrexham	53°01'55"N 02°55'25"W	12.41 MW	operating until 1959
Newport power stations	Newport	51°35'11"N 02°59'08"W	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 03°36′40″W	120 MW	(Decommissioned in 1977)
Tir John power station	Swansea	51°37′35″N 03°53′50″W	142 MW	Oil-fired from 1967 (Decommissioned in 1976)
Upper Boat power station	Pontypridd	51°34'34"N 3°18'07"W	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)	1380 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)	2000 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

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)	1728 MW	(pumped storage)
Dolgarrog power station	Conwy (county borough)	53°11'28"N 3°50'33"W	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°00'15"W	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)	49 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)
Towyn power station^[3]	Tywyn		950 kW	hydro + oil engine
Radyr Hydro Scheme	Cardiff	51°31'9.79"N 3°15'13.50"W	394 kW	Hydro (River Weir Screw Turbines)

Oil-fired

Oil-fired power stations:

Name	Location	Coordinates	Output	Notes
Aberystwyth power station	Ceredigion	52°24'45"N 4°05'03"W	5 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)	2000 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 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)

References

^ "Uskmouth conversion to burn waste abandoned; battery planned for site". newpower.info. 28 April 2022. Retrieved 31 December 2023.
^ 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...
^ ^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.
^ ^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.
^ "Baglan Bay | Calon Energy Limited". calonenergy.com. Retrieved 5 August 2019.
^ Discombe, Matt (7 May 2019). "Barry Power Station set to be demolished after running for 20 years". WalesOnline. Retrieved 30 December 2023.
^ "Calon Energy's administrators put two power plants in 'dormant state'". BBC News. 24 August 2020. Retrieved 30 December 2023.
^ "Shotton plant being closed by International Power, risking 32 jobs". BBC News. 20 March 2012. Retrieved 30 December 2023.
^ "Biogen in Wales | Food Recycling in Wales | Biogen". www.biogen.co.uk.

Citations

[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...

[:0-3] ^ ^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.

[:1-4] ^ ^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". BBC News. 20 March 2012. Retrieved 30 December 2023.

[9] "Biogen in Wales | Food Recycling in Wales | Biogen". www.biogen.co.uk.

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