Plain-English guides to home battery backup Specs from the makers · Prices dated · No paid rankings
Size your backup

Backup power guides

Whole-home batteries

Powerwall, Enphase, FranklinWH and more: wired-in batteries that back up your home.

Solar panels on the tiled roof of a family home
Photo: AS_Photography on Pixabay

All Whole-home batteries guides

Home battery backup: how it works and what it powers Home battery backup keeps chosen circuits running in an outage. See how it works, what it can power, how runtime is worked out and what installation needs. Updated 2 November 2026

More guides

Portable power stations EcoFlow, Jackery, Anker SOLIX and Bluetti: plug-in backup for the essentials. Sizing and battery basics Kilowatt-hours, output, runtimes and battery chemistry, worked through step by step. Solar and batteries Solar generators, panels with power stations and batteries with rooftop solar. Batteries vs generators Whole-house generators, costs and runtimes, and how they compare with batteries. Installation and incentives Transfer switches, what an electrician does, and tax credits and rebates from official sources.