Watts on the Roof

Buyer's guide · home backup

Best Home Battery Backup Systems for Power Outages (2026)

The best home battery backup systems to ride out a power outage, from plug-and-play power stations to whole-home all-in-one inverters.

By Max Langley ·

Disclosure: We earn commissions from links on this page, as an Amazon Associate we earn from qualifying purchases, at no extra cost to you. This never affects what we recommend. Read our editorial standards →

Best plug-and-play backup

EcoFlow

DELTA Pro 3

Model: DELTA Pro 3

A 4 kWh expandable battery and a strong inverter in a wheeled unit, with no wiring needed. The easiest path to real backup for most homeowners.

Check price at EcoFlow · around $3,000
Best whole-home all-in-one

EG4

18kPV Hybrid Inverter

Model: 18kPV

A hybrid inverter that pairs with stackable batteries for whole-home backup. More setup and an electrician, but the most capable option here.

Check price at Signature Solar · varies
Best portable backup

Bluetti

AC200L

Model: AC200L

A capable portable power station that covers fridges, electronics, and CPAPs through an outage, and travels to a campsite afterward.

Check price at Bluetti · around $1,300

The right home backup depends on how much you want to power and how much work you want to do. Plug-and-play units cover the essentials with zero wiring. Whole-home all-in-one systems cover everything, but need an electrician.

We list the model number on every pick, because that is what people search and what gets you the exact unit instead of a similar-looking cousin.

Frequently asked questions

Do I need an electrician?
For plug-and-play units like the Delta Pro 3 or AC200L, no. For whole-home all-in-one systems that tie into your panel, yes, you need a licensed electrician and likely a permit.

Sources

Every claim in this guide that isn't first-person experience is traceable to one of the sources below. URLs verified at publication; some may rot. Let us know if so.

  1. EcoFlow DELTA Pro 3 product page · EcoFlow