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A kWh is a kilowatt-hour, which is a unit of Energy or Work. Your utility company measures the amount of electrical energy you use each month in kilowatt-hours. A megawatt or MW is a unit of Power, which is the rate at which energy is used. Also a megawatt is 1000 kilowatts. Therefore, a kWh is one kW of power used for a full hour. A kWh is a MW of power used for 3.6 seconds (1/1000 of an hour).

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16y ago

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