One kilowatt hour is defined as?

One kilowatt-hour (kWh) is the amount of work done or energy consumed when a device of 1 kilowatt power operates for 1 hour. It measures energy consumption, not kilowatts used per hour.

In simple terms, 1 kWh is the energy used by a 1,000-watt appliance running for 1 hour.

• A 100-watt bulb used for 10 hours = 1 kWh.
• A 2,000-watt device uses 1 kWh in just 30 minutes.
• A 50-watt appliance can run for 20 hours before consuming 1 kWh.

Electricity providers charge based on kWh consumption, and the rates may vary depending on usage patterns and location. For example, in the U.S., electricity costs differ widely between states, sometimes by a factor of three.