KWh/MWh ­ Kilowatt hours and megawatt hours. Power is measured in watts. Energy is measured in watt hours. A watt hour is 1 watt of power applied for 1 hour. A KWh is one thousand watt hours. A MWh is one million watt hours. Scientists use joules to express energy, but KWh are more familiar and more useful here. (1 KWh = 3.6 million joules or 3.6 MJ)

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Stuart