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Simple Life-Cycle Cost Calculator

Compare the life-cycle costs for two different lamps.

Enter the following information and click “calculate.”

Your results will display below.

* 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:    
  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.

* Required
 


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