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What are kilowatt hours (kWh)?

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Kilowatt hours are a way of measuring power consumption. The electricity industry uses kWh to measure how much power you use, as do most companies that manufacture electrical products. When you shop for new electrical appliances, you may notice that most are labelled with both a star rating and the number of kWh the appliance will typically use per year. We measure the power you use every month in kWh.

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