Average UK electricity usage in industry tables means Ofgem's Typical Domestic Consumption Values (TDCVs): standard low, medium and high yearly kWh figures used when a household's real use is not known. They are not a promise of what your home uses.
What it means for a home battery
Ofgem's Review of typical domestic consumption values: decision (27 May 2026) set new TDCVs from 1 July 2026. For electricity on standard single-rate meters (Profile Class 1), medium use is 2,500 kWh per year (low 1,600; high 3,800). For multi-rate meters such as Economy 7 (Profile Class 2), medium use is 3,400 kWh per year (low 1,900; high 6,100). Ofgem's October to December 2026 price cap summary quotes the same medium figures when it explains typical bills.
A home battery does not need to store a year's use. It needs enough usable kWh to cover what you draw outside the cheap window on a time-of-use tariff. That is why Habo's sizing guide starts from your own bill and smart meter data in what size battery, not from the national medium. A 5 kWh EcoFlow STREAM can still be the right first step for many homes even when yearly use is 2,500 kWh, because the useful question is the evening and daytime gap, not the annual total.
Use the TDCV only as context when you read price-cap headlines or tariff comparison tables. For savings, run your rates through the calculator and read how much a home battery can save. More definitions sit on the glossary.
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Frequently asked questions
2,500 kWh per year for standard single-rate meters, and 3,400 kWh per year for multi-rate meters such as Economy 7.
No. Size from the kWh you use outside your cheap tariff window, using your own bill or smart meter data. The TDCV is only a typical-household benchmark for comparing tariffs and the price cap.
Down. Ofgem cut the medium single-rate electricity TDCV from 2,700 kWh (2023) to 2,500 kWh from 1 July 2026.
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