Llynfi power station supplied electricity to the Bridgend area of Glamorgan South Wales from 1943 to 1977.

The coal-fired station was originally built and operated by the South Wales Power Company Limited to supply electricity to munitions factories during the Second World War.

Operating data for the period 1946–72 is shown in the table:[2][3][7][8] Electricity output (GWh) from Llynfi power station.With a high thermal efficiency when it was new the station was used intensively during the 1950, with a load factor running hours approaching 100 per cent.

Last Energy estimates the project represents a capital investment of £300 million, which will not require UK public funding.

[13] Last Energy have a tentative offer of a $103.7 million loan from the US government Export–Import Bank of the United States for the first micro-reactor installation.

[14] In February 2025, Last Energy started the application process for a site license from the Office for Nuclear Regulation.