I know the
On the label or nameplate. Amps × volts also gives watts.
U.S. average residential price, July 2026 (EIA).
Cost per month$16.71
Cost per year$200.49
Average cost per day$0.55
Cost per hour of use$0.18
Cost per day of use$0.55
kWh per day of use3
kWh per month91.25
kWh per year1,095

1,000 W × 3 hours ÷ 1,000 = 3 kWh a day of use; × 7 days a week × 52.14 weeks = 1,095 kWh a year × 18.31¢ = $200.49.

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