Sigenergy · 8kWh module
Sigenergy SigenStor
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.
A4.7 ~£6,500
Specs & review
Home Battery Storage
A home battery charges up on cheap overnight electricity or your own solar, then runs the house at peak times. Compare the systems UK installers fit by how much you can actually use, how much they cost and whether they keep the lights on in a power cut, with or without solar.
No solar? A battery can still pay.
On a time-of-use tariff (e.g. Intelligent Octopus Go at 8p overnight) a battery charges cheap
and powers your home at peak, saving roughly £191 to £506 a year, depending on how much you use. Standalone batteries are also
0% VAT through 2027. How it works
All-in-One Home Batteries
Compare all-in-one home batteries in the UK (Tesla Powerwall 3, GivEnergy, Sigenergy SigenStor) by usable kWh, power, backup, warranty and cost.
3 comparedModular Battery Storage
Compare modular home batteries in the UK (Pylontech, Fox ESS, BYD Battery-Box, SolaX) by usable kWh, expandability, power and warranty.
5 comparedTop-rated batteries
Tesla · PW3
Tesla Powerwall 3
13.5kWh battery with a built-in solar inverter and class-leading continuous output, including whole-home backup.
B4.4 ~£7,500
Specs & review
BYD · 2.56kWh modules
BYD Battery-Box Premium HVS
A widely-installed modular high-voltage battery that stacks from 5.1kWh to ~22kWh, paired with a third-party hybrid inverter.
B4.3 ~£4,500
Specs & review