How much does it cost to run a light bulb for 24 hours?
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Works at the International Committee of the Red Cross, Lives in Geneva, Switzerland.
An incandescent light bulb costs about 50 cents and lasts about 750 hours. If you were to leave a 100-watt bulb burning for 24 hours each day, 365 days per year, it would use 876 kilowatt hours per year. ( 1000 watts equals one kilowatt -C --kilo-- means a thousand.) A kilowatt-hour of electricity costs about 15 cents.
2023-06-15 05:55:11
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Amelia Martin
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An incandescent light bulb costs about 50 cents and lasts about 750 hours. If you were to leave a 100-watt bulb burning for 24 hours each day, 365 days per year, it would use 876 kilowatt hours per year. ( 1000 watts equals one kilowatt -C --kilo-- means a thousand.) A kilowatt-hour of electricity costs about 15 cents.