RWE to build battery storage facility in Wales for $264 million

German multinational energy firm RWE is investing around £200 million ($264 million) in the construction of a battery storage facility at its power plant site in South Wales, the Essen-headquartered firm said Monday.

The project received planning permission in January and construction is set to begin in the first half of 2026, RWE said.

Commissioning is planned for the second half of 2028.

The storage system will comprise up to 212 lithium-ion battery containers. Once fully commissioned, the battery storage system can continuously feed up to 350 megawatts of electricity directly into the grid for two hours, corresponding to a storage capacity of 700 megawatt hours.