Can a Power Station Run a Sump Pump?
Yes. Most sump pumps are 120V and draw 800 to 1,100 W running. A 2 kWh station with a 2,500 W surge rating can keep one going through a storm.
A ⅓ to ½ hp sump pump runs on any power station with at least 2,000 W of output and about 2,500 W of surge. How long it lasts depends on how often the pump cycles, which depends on how hard it is raining.
How much power a sump pump uses
- ⅓ hp: about 800 W running, 1,300 W or more to start.
- ½ hp: about 1,050 W running, about 2,150 W to start.
- ¾ hp: about 1,500 W running, 3,000 W or more to start.
The pump only runs while the pit is emptying. In a light rain it may run a few minutes an hour; in a downpour with a high water table it can run every few minutes. We use 300 W as a heavy-storm average for a ½ hp pump.
Runtime by power station
| Power station | Capacity | Light rain (100 W avg) | Heavy storm (300 W avg) | Pump + fridge (400 W avg) |
|---|---|---|---|---|
| Anker SOLIX C1000 Gen 2 | 1,024 Wh | 8.7 hours | 2.9 hours | 2.2 hours |
| Bluetti Elite 200 V2 | 2,073 Wh | 18 hours | 5.9 hours | 4.4 hours |
| EcoFlow DELTA 3 Ultra Plus | 3,072 Wh | 26 hours | 8.7 hours | 6.5 hours |
| Anker SOLIX F3800 Plus | 3,840 Wh | 33 hours | 11 hours | 8.2 hours |
| Jackery Explorer 5000 Plus | 5,040 Wh | 43 hours | 14 hours | 11 hours |
The Anker C1000 Gen 2 (2,000 W, 3,000 W surge) can start a ½ hp pump but has little battery for a long storm. A 2 to 3 kWh station such as the Bluetti Elite 200 V2 or EcoFlow DELTA 3 Ultra Plus is the practical minimum for an all-night storm.
Tips for storm night
- Plug the pump directly into the station. Avoid long, thin extension cords, which drop voltage and make starting harder.
- Use the station's UPS or pass-through mode if it has one, so the pump switches over automatically when the grid fails.
- Keep the fridge on the station too only if you have the battery for both; the pump comes first.
- Charge the station fully when a storm is forecast.
- Test it: unplug the pump from the wall, plug it into the station, and pour a bucket of water into the pit.
Bottom line
For a typical ½ hp sump pump, buy a station with at least 2 kWh and 2,500 W of surge. If your basement floods often, a 3 kWh station gives you a safer margin. Check your load with the outage load calculator.
Specs and prices come from manufacturer listings and published reviews. We have not lab-tested these units. Prices change often, so check the current price before you buy.