Sigenergy
Sigenergy SigenStor
8kWh module
A modular 5-in-1 system (inverter, battery, energy management and optional EV DC charging) that scales to 80kWh, with a standout 15-year warranty.
4.7 ~£6,500
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All-in-One Home Batteries
All-in-one systems combine the battery, inverter and controls in a single unit — the simplest way to add storage, with whole-home backup on many models. Store cheap off-peak electricity or solar and use it at peak times. Standalone batteries qualify for 0% VAT.
Tesla
Tesla Powerwall 3
PW3
13.5kWh battery with a built-in solar inverter and class-leading continuous output, including whole-home backup.
4.4 ~£7,500
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GivEnergy
GivEnergy All in One
13.5kWh
Integrated battery, inverter and gateway in one cabinet, with whole-home backup. A strong fit for storage on a single unit — but check warranty support given GivEnergy's recent administration.
4.2 £4,999
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Duracell
Duracell Energy Bank
13.1kWh
An AC-coupled all-in-one battery (made with Puredrive Energy) under a trusted consumer brand — retrofits easily to any home, with or without solar.
4.1 ~£6,500
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