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 2
Lamp name:       Lamp name:    
* Watts (fixture watts/# of lamps):       * Watts (fixture watts/# of lamps):    
* Cost (including disposal cost):   $   * Cost (including disposal cost):   $
* Life in hours:       * Life in hours:    
* Cost of labor to replace lamp:   $   * Cost of labor to replace lamp:   $
Mean lumens:       Mean lumens:    
  click to 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.