Compact fluorescent lamps (CFLs) use 75% less energy than incandescent light bulbs (ILBs), and on average last up to 6 to 8 times or more. Here you can estimate the annual energy saving and electricity cost saving that can be generated when replacing ILBs with CFLs. Please input the numbers and wattages of ILBs, number of daily usage hours, and unit price of electricity, then click the “Calculate” button.
Compact Fluorescent Lamps (CFLs) CALCULATOR
Numbers and wattages of incandescent light bulbs (ILBs):
Total Incandescent Lamp Wattage is 0 W
Hours
* is $
(kWh)**=
($) =
Typical Wattage Comparison For CFLs against ILBs
Incandescent Lights Bulbs (ILBs)
Compact Fluorescent Lamps (CFLs)
25 Watt
5-6 Watt
40 Watt
8-9 Watt
60 Watt
11-12 Watt
100 Watt
20-23 Watt
Note:The above table of comparusion is for reference only. Performances may vary among brands and manufacturers.
*Please refer to your power supplier web site for your electric power tariff
**Assume 75% energy saving when replacing all ILBs with CFLs