How many watts does a sump pump use?
A sump pump uses 400–1,200 W (about 800 W on average). Running 1 hours/day, that is about 0.80 kWh a day and 24.0 kWh a month — roughly $4.39 a month at the U.S. average rate of 18.31 ¢/kWh.
This is the sump pump electricity usage reference: watts, amps on a 120 V circuit, the kWh math, and links to what that usage costs in each state.
Watts, amps, and kWh for a sump pump
| Measure | Value |
|---|---|
| Rated wattage range | 400–1,200 W |
| Average draw used in our math | 800 W |
| Amps at 120 V | 3.3–10 A (6.7 A at the average draw) |
| kWh per hour | 0.80 kWh |
| kWh per day at 1 hours/day | 0.80 kWh |
| kWh per month | 24.0 kWh |
| Cost per month at the U.S. average (18.31 ¢/kWh) | $4.39 |
The math is kWh = watts × hours ÷ 1000 and amps = watts ÷ volts. A standard 120 V household circuit on a 15 A breaker carries about 1,800 W. For the dollars in your state, open cost to run a sump pump in Texas and switch states from there.
Sump Pump electricity usage profile
| Metric | Value |
|---|---|
| kWh per hour | 0.80 kWh |
| kWh per day (typical) | 0.80 kWh |
| kWh per month (typical) | 24.0 kWh |
| kWh per year (typical) | 292.0 kWh |
| Low runtime scenario | 0.5 hours/day |
| High runtime scenario | 3 hours/day |
Connect usage to cost tools
Related appliance usage pages
Source & Method
Source: U.S. Energy Information Administration (EIA) Retail Sales of Electricity. Last dataset period: July 2026. Usage calculations use fixed appliance wattage and runtime assumptions so results stay comparable across pages.
Frequently asked questions
How many watts does a sump pump use?
A sump pump uses 400–1,200 W (about 800 W on average). Our usage and cost math uses 800 watts running 1 hours/day.
How many amps does a sump pump draw?
On a 120 V circuit, 400–1,200 W works out to about 3.3–10 A; at the 800 W we use in the math that is 6.7 A.
How much electricity does a sump pump use per month?
About 24.0 kWh a month at 1 hours/day. Lighter use (0.5 hours/day) comes to roughly 12.0 kWh and heavier use (3 hours/day) roughly 72.0 kWh.
How much does it cost to run a sump pump?
About $4.39 a month at the U.S. average rate of 18.31 ¢/kWh — from roughly $3.05 in Louisiana to $11.52 in Hawaii at the same usage. The state cost-to-run pages price it at every state's rate.