Power station vs home battery vs generator
Three ways to keep the lights on. Here is how they differ, using makers’ published specs and official safety guidance.
We have not tested these products. Battery figures come from the manufacturer pages in our home backup comparison, read on Nov 3, 2026.
| Expandable power station | Installed home battery | Generator | |
|---|---|---|---|
| Examples | EcoFlow DELTA Pro 3 / Ultra, Anker SOLIX E10, Jackery Explorer 5000 Plus | Tesla Powerwall 3, Enphase IQ Battery 10C, FranklinWH aPower 2 | Portable or standby fuel generators |
| Storage in our table | 3.84–6.144 kWh base; up to 90 kWh systems | 5–15 kWh per unit; up to 225 kWh (FranklinWH, 15 units) | None; runs as long as it has fuel |
| Price | Listed from $2,799 (DELTA Pro 3) before panel or switch | Installer quote | Varies; not covered here |
| Where it goes | Indoors or out; on wheels | Wall or pad, installed by a pro | Outdoors only, at least 20 feet from windows, doors and attached garages (Ready.gov) |
| Recharging | Wall power or solar (2,600–9,000 W solar input listed) | Solar and grid; AC-coupled models pair with existing solar | Refuel |
| Main risk to manage | Running out of stored energy | Same, plus install cost | Carbon monoxide; Ready.gov says to install CO detectors on every level |
When each makes sense
- Power station: you want to buy it yourself, take it with you if you move, and grow it over time. See best home backup power stations.
- Home battery: you have or want rooftop solar and prefer a fixed install with a longer warranty (10–15 years listed vs 5 years for the power stations here).
- Generator: outages last longer than your battery can cover and you can run it safely outdoors. Many people pair one with batteries.
Whatever you choose, size it first: how much battery do I need? Then compare models in home backup power.
Frequently asked questions
Is a home battery better than a generator?
They solve different problems. A battery is quiet and needs no fuel but holds a fixed amount of energy; a generator runs while it has fuel but must be used outdoors, at least 20 feet from windows, doors and attached garages, per Ready.gov.
Can I use a power station indoors?
Battery power stations do not burn fuel. Follow the maker's manual for where to place and charge them. Generators must stay outdoors.
Which lasts longer in an outage?
A generator runs as long as you can refuel it. A battery lasts its stored kWh divided by your load, longer if solar can recharge it.