Guides · Updated October 12, 2026
Power station or gas generator for home backup?
A power station wins on silence, safety and convenience; a generator wins on cost per watt and unlimited runtime with fuel. For outages under two days, a 2 to 3 kWh power station covers most households. For a week-long outage or whole-home loads like central AC and a well pump, you still want a generator, or both.
Side by side
| Battery power station | Gas inverter generator | |
|---|---|---|
| Cost for about 2,000 W | $879 (EcoFlow DELTA 3 Max) | $500 to $1,100 |
| Runtime | About 6 hours at 300 W, then recharge | 8 to 12 hours per gallon at 25% load, as long as you have gas |
| Noise | Silent to a faint fan | 50 to 70 dB, like a vacuum cleaner outside |
| Where it can run | Indoors, bedroom included | Outdoors only, 20 ft from windows; carbon monoxide kills dozens of people a year |
| Maintenance | Charge every 3 to 6 months | Oil changes, fuel stabilizer, monthly test runs, carburetor cleaning |
| Fuel in a disaster | Wall, car, or solar | Gas stations need power to pump |
| Lifespan | 3,000 to 6,000 cycles, roughly 10 years | 1,000 to 3,000 hours with care |
Who should buy which
- Apartment, condo, or anywhere you cannot run an engine outdoors: power station, no contest.
- Medical equipment, sleeping household, or you want zero effort: power station.
- Rural home with a well pump, septic pump, or electric heat: generator, possibly with a battery for silent nights.
- Hurricane and ice-storm country: both, if budget allows. The generator recharges the battery in two hours, then goes quiet.
Our picks
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DELTA 3 Max
The 2 kWh class is where a battery first replaces a small generator for most households: fridge, lights, Wi-Fi and a CPAP for a day.
HomePower 3000
A 3 kWh unit with 3,600 W output starts almost anything a 3,500 W generator would, silently.
DELTA Pro 3
With 240 V output and add-on batteries, this is the closest a portable battery gets to a whole-home generator.
Prices are each brand's list price on October 12, 2026; buy links go to Amazon, where the price can differ. Adjust the devices and days in the finder for your own numbers, or see all 20 models.
Common questions
Can a power station replace a whole-house standby generator?
Not yet at portable prices. A standby generator or a wall-mounted home battery of 10 kWh or more is a different product category, usually $10,000 and up installed.
Can I charge a power station from a generator?
Yes, and it is one of the best ways to use both. Most 2 kWh units refill in 1 to 2 hours from a 2,000 W generator, which then shuts off.