[3][4] It comprised four Fraser and Chalmers / GEC 60 MW hydrogen cooled 11.8 kV turbo-alternators, these were supplied with steam at 62.1 bar and 482 °C.

In the resulting explosion, two workers were killed and nine injured, and the turbine and generator were completely destroyed.

New environmental equipment was installed and it was given a refurbishment which is thought to have extended the station's life by 25 years.

In June 2004 the station was put back into full operation, when it was bought by Welsh Power, who were then known as Carron Energy.

[23] However, in 2015, plans were announced to instead convert the station to run fully on pellets of biomass and waste plastic, as part of a scheme to regenerate the area and create hundreds of jobs.

[24] These plans then took priority and as a result, Uskmouth saw very infrequent use as a coal plant; with April 2017 being the last occasion.

[30] In December 2023, the site's operator Simec Uskmouth Power Ltd obtained planning consent to demolish the station's two banks of cooling towers, with the demolition expected to be completed by May 2024.

[31] In January 2024, Simec was granted planning permission to construct a battery energy storage system on the site of the to-be-demolished cooling towers.

Media reporting of this development also confirmed that Uskmouth B power station was decommissioned as of that date.

[33] The station was put into a 'dormant state' in August 2020 following Calon Energy entering administration.

[35] It was then used again for the 2011 Christmas special "The Doctor, the Widow and the Wardrobe" as spaceship corridors, filmed on 20 September 2011.