How much electricity does a CFL bulb use?
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An average CFL bulb which provides 800 lumens will use only 13 to 15 watts compared to a similar incandescent bulb which uses 60 watts. Click calculate to find out the electricity cost of a single CFL light bulb running at 14 Watts for 5 hours a day @ $0.10 per kWh, you can also modify the calculator.
Consequently, how much does it cost to run a light bulb for 24 hours?
So the cost of replacing per 24 hours will be 24x 2/ 1000 or 4800/1000 cents or 4.8 cents. so the total cost in cents is . 24+0.01+ 0.048 = 0.0298 or 29.8 cents. As you see cost calculations depend upon the situation.
Appliance | Typical Consumption Per Hour | Cost Per Hour (at 10 cents per kilowatt-hour) |
---|---|---|
Electric range burner | 1,000 watts | 10 cents |
Refrigerator | 1,000 watts | 10 cents |
Desktop computer and monitor | 400 watts | 4 cents |
Incandescent light bulb | 60 watts | 0.6 cents |
Likewise, are CFL bulbs energy efficient?
CFLs are four times more efficient and last up to 10 times longer than incandescents. A 22 watt CFL has about the same light output as a 100 watt incandescent. CFLs use 50 – 80% less energy than incandescents.
at 10 cents per KWH, it will cost $22 to run that sucker 24/7 for a year. About 6 cents a day. You can double those numerbs if your electricity is 20 cents per KWH. Remember this is for real watts, not equivalent watts of light.