Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government what plans they have to expand the number and capacity of hydroelectric pump storage facilities in (1) Wales, (2) England, and (3) Scotland; how many such facilities have been approved and are under construction; and how many are awaiting planning approval.

The Clean Power 2030 Action Plan sets an ambition of 4-6GW of long duration electricity storage (LDES) capacity, which includes pumped storage hydropower (PSH), by 2030. This is being enabled through an LDES cap and floor investment support scheme, which government announced in October 2024 and is being delivered by Ofgem. It is open to projects from all parts of Great Britain.

The British Hydro Association maintains a list of PSH projects under development in Great Britain at the following link: https://british-hydro.org/pumped-storage-hydropower/.