The Kilowatt-Hour
A kilowatt-hour measures the energy an appliance uses in kilowatts per hour. For example, if you clean your floors with a 1,000-watt vacuum cleaner for one hour, you consume 1 kWh of energy.
Let’s go over a few examples of kW vs kWh in the context of low- and high-power appliances:
- Lower watts : If you are using a 100-watt device, such as a plasma TV, you would have to watch your favorite shows for 10 hours before reaching 1 kWh.
- Higher watts : If you are running a 2,000-watt appliance, such as a clothes dryer, you only need to power it for 30 minutes to reach 1 kWh.
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