Simple Life-Cycle Cost Estimator

    Compare the life-cycle costs for two different lamps.
    Enter the following information and click "calculate."
    Your results will display below.


    * Required
     
    * Average number of hours on per year:    
    * Electric cost per kilowatt hour:    
     
    Lamp 1
    Lamp name:    
    * Watts (fixture watts/# of lamps):    
    * Cost (including disposal cost):   $
    * Life in hours:    
    * Cost of labor to replace lamp:   $
    Mean lumens:    
     
    Lamp 2
    Lamp name:    
    * Watts (fixture watts/# of lamps):    
    * Cost (including disposal cost):   $
    * Life in hours:    
    * Cost of labor to replace lamp:   $
    Mean lumens:    
     
      Calculate

    Results
      Lamp 1        Lamp 2
    Lamp name:         
    Cost over lamp life:         
    Cost per 1,000 hours:         
    Cost per year:         
    Cost per million lumen hours:         
     
     
    Savings with Lamp 2:  /year
    * If you are comparing lamps with significantly different light output, the cost per year may have a greater difference. To get a more accurate representation of the cost of light, look at the cost per million lumen hours.