CALCULATOR SOFTWARE / ROI CALCULATOR

Step 1
Total kilowatts saved by replacing the inefficient lamps with more efficient lamps
  Original lamp wattage  
  Replacement lamp wattage  
  Watts Saved per Lamp =  
  Number of lamps to replace  
  Total kWh Saved =
 
Step 3
Total energy costs saved per year by this upgrade
  Total kWh saved per year =    
  Your energy cost per kWh (typically $.10) $  
  Total Energy Cost Savings per Year = $
Step 2
The total kWh per year saved by this upgrade
  Total kWh saved =  
  Total hours used per day
  Total days used per week
  Total weeks used per year
  Total kWh Saved per Year = 
 
Step 4
Payback of the upgrade
  Initial cost of lighting upgrade $  
  Total Energy Cost Savings per Year = $  
  Number of Years for Payback on Investment =

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