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1 kW x 12 hours = 12 kWh. As to the cost - that may vary from country to country. Look at a bill from the power company to see how much they charge you per kWh. If that is not explicitly stated, divide the total amount of the bill, by the number of kWh used.

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βˆ™ 13y ago
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βˆ™ 4mo ago

To calculate the cost of running a 1000-watt device for 12 hours, you need to know your electricity rate per kilowatt-hour (kWh). Multiply the device’s wattage by the hours of use, then divide by 1000 to get the total kilowatt-hours used. Finally, multiply the kilowatt-hours by your electricity rate to get the cost.

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Q: How much to run 1000 watts for 12 hours?
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