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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

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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

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Enter Days Used per Week

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Enter Weeks Used per Year

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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)

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Total Energy Cost Savings per Year =

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

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Total Energy Cost Savings per Year

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# of Years for Payback on Investment =