How much does a sump pump cost to run?

Sump pumps draw 500–1,000 watts while running, activating only when water reaches a certain level. In wet seasons or basements with poor drainage, they may run frequently; in dry periods, they barely run at all.

Typical running cost (18.83¢/kWh, U.S. average, 2026-04)

BasisCost
Per hour (while running, 800 W typical)$0.15
Per day (0.5 h/day, 7/7 days)$0.075
Per month$2.29
Per year$27.51
Hourly range (small 400 W – large 1000 W)$0.075 – $0.19
Save: Ensure your sump basin is properly sized and the pump intake is clear of sediment to minimize run frequency.

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