UK home batteries 2026: every model compared by £/kWh

Every major home battery sold in the UK, ranked by cost-per-usable-kWh — the only metric that lets you compare honestly across brands.

BatteryUsable kWhWarrantyRound-trip£ installed£/kWh
Pylontech US50004.5610y95%£2,400£526
GivEnergy 9.5kWh Battery9.512y90%£5,400£568
PureDrive PureStorage II 10kWh1010y92%£5,800£580
Fox ESS EP1110.3610y91%£6,200£598
GivEnergy All in One13.512y92%£8,200£607
Tesla Powerwall 313.510y89%£9,500£704
Solax Triple Power T585.810y90%£4,200£724
Sigenergy SigenStor 8kWh810y95%£7,100£888