Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government how many proposals they are currently considering from commercial organisations to construct pump storage hydro-electricity plants in Wales; in which year those proposals were first made; and when they anticipate reaching a conclusion on them.

As announced in October, the Government has decided to introduce an investment support scheme for long duration electricity storage (LDES) assets, including pumped storage hydro (PSH). This scheme will be delivered by Ofgem. We expect it to open for applications in 2025.

As the scheme has not yet opened, there are currently no formal proposals for Ofgem to consider. The Government is aware of interest in Welsh PSH and the potential for there to be some Welsh project applications in due course.