During 2026 so far, 1.1GW of batteries have entered service, contributing to a 21% increase in operational capacity over the past year. Another 9.1GW of projects are under construction, showing the scale of investment in infrastructure that helps Britain store renewable electricity and balance supply and demand.
UK battery storage capacity reaches 8.7GW as new installations accelerate
The UK's operational battery storage fleet has grown to 8.7GW of power capacity and 14.1GWh of energy-storage capacity, according to new figures from industry body RenewableUK.