Top pick
EcoFlow
PowerOcean Home Battery System
Pairs with rooftop solar to power your whole home through a grid outage.
Fridge-freezer: ~5d 22h
4.6 From £4,500 (installed)
Home & Solar
Home Backup & Solar UPS
Battery backup that pairs with solar to keep the lights on at home.
The short version
Pairing battery storage with solar panels means the energy you generate during the day can keep your home running after dark — or during a grid outage. These systems range from small "mini-UPS" units that just keep your broadband router alive, up to whole-home battery systems that can carry your fridge, lighting and essential circuits for days.
If you already have (or are planning) rooftop solar, look for a hybrid inverter or battery system that's explicitly solar-compatible, so it can charge from panels as well as the grid.
What to look for
Solar-ready charging
An MPPT solar input (or hybrid inverter) lets panels refill the battery during a long outage.
Fast changeover
For fridges and boilers a short switchover is fine; for computers look for UPS-grade (<20ms) switching.
LiFePO4 chemistry
Lithium iron phosphate batteries handle thousands of cycles and are the safest lithium option indoors.
Installer & DNO rules
Anything wired into your consumer unit needs a qualified electrician and, for grid-tied systems, DNO notification.
Our picks
Compared on what they can actually run
Bluetti
AC300 + B300 Home Backup Kit
A modular battery and inverter combo that can power a fridge, router and lighting for days.
Fridge-freezer: ~1d 20h
4.5 £2,200 – £3,000
Top pick
Jackery
Explorer 2000 Plus
An expandable solar generator that's ideal for backing up essential home circuits.
Fridge-freezer: ~1d 5h
4.4 £1,400 – £1,900
CyberPower
CP550 Mini UPS for Router & Broadband
Keeps your WiFi router and modem online during short power cuts.
Fridge-freezer: ~47 min
4.2 £45 – £65
