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Compact Fluorescent Lightbulb (CFL) Savings Calculator

Use the calculator below to determine how much energy and money you could be saving by converting to a more energy efficient technology – Compact Fluorescent Lightbulbs (CFL’s)!

CFL lightbulbs use roughly 75% less energy than an incandescent lightbulb, and last up to 10 times longer! Keep this in mind when using this calculator, and think of the additional savings of not having to replace the bulb as frequently.

Current Fixture Type Incandescent
Wattage     
# of Bulbs     
Hrs/Day     
$/kWh $   
$/Yr to Operate $87.6
Replacement Type CFL
Equivalent CFL(Compact Fluorescent Lightbulb) Wattage 25
$/Yr to Operate $21.90
Cost per bulb $   
Total cost for all new bulbs $6
$/Yr Saved $65.70
Payback Yrs 0.09


NOTES:
  1. This calculator is provided as a guide only. The figures stated above do not include lifecycle calculations, and may vary based on makes and models.
  2. This calculator uses $0.10/kWh as a guideline. Consult your electricity bill or contact your chosen retailer for your current rate for a more accurate calculation.