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LED Payback Calculator


This calculator gives your savings when you upgrade your lighting to LEDs.  Enter the wattage and life for both the old and new fixture and the billing rate per kilowatt-hour. 


1. Compute the total power (kilowatts, kW) saved by upgrading conventional lighting technology to LED technology.
Original Fixture
Wattage
  LED
Wattage
  Watts Saved
per Fixture
  # of Fixtures
to Replace
   Power
Saved
W -  W =  W × = Label W
Label  kW
2. Compute the total energy (kilowatt hours, kWh) saved annually.
Total Kilowatts
Saved
Hours of Use
per Day
Days of Use
per Week
Weeks of Use
per Year
Total kWh
Saved per Year
Label kW × × × = Label
 
3. Compute the total energy cost savings per year.
Total kWh
Saved per Year
  Your Energy Cost
per kWh (typ. $0.10)
  Energy Cost Savings
per Year
Label kWh/yr × $ = $Label 
 
     LabelLabelLabel    Label     LabelLabel    Label
Label   LabelLabel Label   Label   LabelLabelLabel
  LabelLabel   Label   Label   Label