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Calculator


Lighting Energy Saving Calculator

Number of Lamps : Hours Per Day : Days Per Week In Use :
Energy Rate : $   kWh     Weeks Per Year Not In Use :

 

    Current LED
Lamp wattage
(watts)
:
Lamp life
(continuous hours)
:
Cost of lamp
($)
:
Maintenance cost
($ per hour)
:
Replacement time per lamp
(minutes)
:
Number of times replaced
(led lifetime)
:
Actual life span
(weeks)
:
Lamps replaced per year :
Lamp cost per year
($)
:
Maintenance cost per year
($)
:
Electricity cost per year
($)
:
Initial outlay
($)
:  
Yearly cost
($)
:
Yearly saving
($)
:  
Payback time
(Years)
:  
Greenhouse gas emissions
(kg co2 per year)
:
Greenhouse gas saving
(kg co2 per year)
:  

 


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