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Top pick
4.6 From £4,500 (installed)

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EcoFlow

PowerOcean Home Battery System

Pairs with rooftop solar to power your whole home through a grid outage.

Output
6,000W
Battery
10kWh
Chemistry
Lithium

Can it run…?

Each device on its own, with typical UK wattages.

Wi-Fi router + fibre box
~17d 17h
CPAP machine
~8d 21h
Fridge-freezer
~5d 22h
Gas boiler (pump & controls)
~2d 23h
LED lights (6 bulbs)
~7d 2h
55" TV
~3d 13h
Kettle
~2h 50m
Runtime estimatordrag to set your load
LOAD
—
RUNTIME
—

Key specs

Battery capacity10kWh (expandable)
OutputWhole-home backup via hybrid inverter
ChargingSolar panels or grid
RuntimeHours to days, depending on load and expansion
Ideal forHomes with (or planning) rooftop solar
InstallProfessional installation required

Our take

This is the "set and forget" tier of home backup: a battery and hybrid inverter combination that sits behind your consumer unit and automatically takes over essential circuits — or the whole house — when the grid goes down.

Why we like it

  • Charges from solar during the day, discharges at night or during outages
  • Modular capacity — add battery units as your needs grow
  • App-based monitoring of generation, storage and usage

Note: whole-home battery systems normally require a qualified installer and, in the UK, DNO notification. Get a quote for your property before committing.

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