ROI Calculator OLD LIGHTING Number of Fixtures Wattage per Fixture W Operating Hours per Day Hrs Operating Days per Month Days Cost per Kilowatt Hour $/kWH Ballast Maintenance Cost per Month (usually $.51 per ballast) $ HVAC Lighting Load in % (usually 10%-15%) % Calculation Results OLD Total Kilowatts Used per Month = kW OLD Lighting Cost per Month = $ OLD Total Ballast Maintenance Cost per Month = $ OLD Total Old Lighting Cost per Month = $ NEW LED LIGHTING NEW LED Number of Fixtures NEW LED Wattage per Fixture W NEW LED Fixture Cost = $ NEW LED Installation Cost per Fixture = $ Estimated Power Company Rebate @ $/kWH = $ Calculation Results NEW LED Total Kilowatts Used per Month = kW NEW LED Lighting Cost per Month = $ TOTAL SAVINGS Total LED Savings per Month = $ Total LED Savings per Year = $ Total Cost for LED Retrofit = $ LED Savings Percentage = % RETURN ON INVESTMENT (ROI) Months to Pay Back LED Retrofit Purchase = Months Print Results