A kWh, or kilowatt-hour, is a unit of energy. It means using 1,000 watts of power for 1 hour.

Quick Scoop

  • kW measures power, or how fast electricity is being used.
  • kWh measures energy, or how much electricity is used over time.
  • Electricity bills often use kWh because that shows total usage.

Simple example

If a 1,000-watt appliance runs for 1 hour, it uses 1 kWh of energy.

If you want, I can also give you a super short everyday example, like how many kWh a TV, fan, or AC uses.