Kilowatt-hours, expressed kWh or kW·h, are a measure of electrical energy consumption equivalent to one kilowatt of power used for one hour. The electric company uses this measurement to calculate how much to bill customers, for example.

Kilowatts, abbreviated kW, are a measure of electric power. To convert energy in kWh to power in kW, use the formula below.

kW = kWh ÷ Hours

Example

What is the power consumption in kilowatts when the energy consumption is 15 kilowatt-hour for time duration of 3 hours?

P = 15 kWh / 3 h = 5 kW