Power
Time
Energy
Electric Current
A kilowatt-hour is a unit of energy. Kilowatt per hour would be a rate of change of power flow with time. Work is the amount of energy transferred to a system; power is the rate of delivery of energy. Energy is measured in joules, or watt-seconds.
- One kilowatt-hour (kWh) is the electrical energy consumed by an electrical appliance of power 1 kW when it is used for one hour.
- One unit of electric energy is equal to one kilowatt hour (kWh) and in simple words, 1 kWh is the quantity of energy consumed by a 1kW (1000 watt) electric appliance in 1 hour.
- For example ten bulbs of 100-watt light and used for 1 hour to estimate the electricity in unit Kilowatt hour.
- One unit of electric energy is estimated and equal to:
-
1 unit = 1 kWh
-
1 kWh = 1 kW×1h
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1 kWh = 1000 W × 3600s
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1 kWh = 3.6 × 106 J
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