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The latest data from the Department for Energy Security and Net Zero (DESNZ) reveals that over 22,000 energy storage systems were installed in domestic properties across the UK over the past 12 months.
Between April 2024 and March 2025, a total of 22,398 battery energy storage systems were added to UK homes. The installations broke down as follows:
The total installed capacity over this period reached 193.39MWh.
According to Microgeneration Certification Scheme (MCS)-certified data, installation costs drop significantly for larger systems:
This cost curve reflects improved economies of scale, making larger installations more attractive for cost-conscious consumers.
This data does not include installations in newbuild properties, where battery integration is becoming increasingly standard.
One of the leading efforts in this area is Octopus Energy’s “Zero Bills” homes scheme, which promises residents no energy bills for five years. These homes include:
The company has partnered with major housebuilders including:
The goal: deliver 100,000 Zero Bills homes by 2030. The programme recently expanded to Scotland, in partnership with Homes for Scotland and MAST Architects.
Meanwhile, E.ON Next and Northern Powergrid have launched a pilot programme offering free home batteries to participants.
The trial combines:
It’s part of an effort to lower household energy bills and better manage demand across the grid.