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Energy Savings Calculator

Annual Energy Savings / ROI Calculator
Enter Step 1. Calculate the total kilowatts saved by replacing the inefficient lamps with more efficient lamps
Enter Original Lamp Wattage   
Enter Replacement Lamp Wattage

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Watts Saved per Lamp =

Enter Numbers of Lamps to replace

x

 

Total Watts Saved =

Total Kilowatts Saved =


Step 2. Calculate the total kWh per year saved by this upgrade
Total Kilowatts Saved   
Enter Hours Used per Day

x

 
Enter Days Used per Week

x

 
Enter Weeks Used per Year

x

 

Total kWh Saved per Year =


Step 3. Calculate the total energy costs saved per year by this upgrade
Total kWh Saved per Year   
Enter Your Energy Cost per kWh (typically $.10)

x

 

Total Energy Cost Savings per Year =


Step 4. Compute the payback of the upgrade
Enter Initial Cost of Lighting Upgrade

$

 
Total Energy Cost Savings per Year

/

 

# of Years for Payback on Investment =