Can a power station run a sump pump?
Yes, if the station can handle the start-up surge. A typical 1/3 hp sump pump draws around 800 W while running and roughly 2,000 W for a moment when the motor starts. Pick a station with at least 1000 W of continuous output and a surge rating above 2,000 W, or it will shut off each time the pump kicks in.
How long it runs
A sump pump doesn’t run constantly; it cycles when the pit fills. In a heavy storm that can add up to about an hour of pumping a day. The table shows both.
| Station | Running non-stop | At 1 h a day |
|---|---|---|
| 500 Wh | 32 min | 12 h 45 min |
| 1,000 Wh | 1 h 4 min | 1.1 days |
| 1,500 Wh | 1 h 36 min | 1.6 days |
| 2,000 Wh | 2 h 8 min | 2.1 days |
| 3,000 Wh | 3 h 11 min | 3.2 days |
Getting through a long outage
- Time how often your pump actually cycles during rain. Two minutes every half hour is under 2 hours a day; enter your real figure in the calculator.
- For multi-day storms, plan a way to recharge: solar, a car, or a generator. The pump works hardest in bad weather, which is exactly when solar is weakest.
- If pumping is the only job, a battery backup made for sump pumps is another option.
See 2000 Wh power stations on Amazon
Figures assume 85% efficiency on AC and typical draws. The label on your appliance, or a plug-in power meter, gives the exact number; enter it in the calculator.