Written Question·Department for Energy Security and Net Zero·UIN 115132

Energy: Storage

Tabled: 23 February 2026

Answered: 3 March 2026

Question

James McMurdock

Independent — South Basildon and East Thurrock

To ask the Secretary of State for Energy Security and Net Zero, what recent assessment he has made of the viability of expanding the utilisation of compressed air energy storage in the energy grid.

Answer

Michael Shanks

There is already 2.8GW of pumped storage hydropower (PSH) on the GB electricity system, which is a form of Long Duration Electricity Storage (LDES). The government agrees that GB needs more LDES, which is why the Clean Power 2030 Action Plan envisages an ...

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