CFL lamps or compact fluorescent lights are made to make lighting more energy efficient. It started replacing the incandescent lights. It was invented by Edward Hammer in1980 who was an Engineer at GE. The power consumption of CFL ranges from 10 watts to 50 watts depending on its extraction rate.
Enter the wattage, hours of usage, and cost per kWh. The energy usage calculator for CFL gives you the total energy consumed by the CFL. Also, you can find how much power CFL lights use. To check the current electricity price per kWh in your region refer to Global Electricity rates. It is necessary to enter the right cost per unit(kWh) to find the exact price.
Energy usage of CFL
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Lumens-wattage of CFL lamps
| Lumens | Typical CFL Watts |
| <500 | 10-12W |
| <900 | 15 – 18W |
| <1200 | 12 – 13W |
| <1750 | 14 – 20W |
| 2600+ | 25 – 28W |
Terms and definitions:
Wattage:
Power usage of the device in watts shall be mentioned on its label.
Cost per unit:
The average cost per unit charged by the electric utility. Every country has different tariff rates. Visit: Global Electricity prices for details if you don’t know how much the utility company charges you per unit or kWH.
Units per day:
The number of units of electricity consumed by the load every day considering the entered operation hours.
Hours of usage:
The number of hours the load is used per day.
The electricity usage depends on the wattage and the number of hours of usage. The utility company charges you for the total kilowatt-hour of energy you have consumed. Kilowatt-hour is the product of the power consumption of the load and the number of hours of usage.
Replacing incandescent bulbs with CFL can help you cut down your energy usage costs by 40 percent. They can last up to 9 times longer than incandescent bulbs.
In compact fluorescent lights, the current is driven through a gas chamber filled with argon and mercury vapors to generate ultraviolet rays. This ultraviolet ray falls on the phosphor coating on the interior of the gas chamber which emits visible light.
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