What is the meaning of the term Kilowatt-Hour (kWh)
A kilowatt-hour (kWh) is a measure of electrical energy usage.
For example, if you use a 100-watt lightbulb for an hour that would consume a "100-watt hour" of energy. If you leave that 100 watt light bulb on for 10 hours you would consume a Kilowatt Hour of energy.