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Pay back analysis 70 W Sodium vs 30 W LED
Sodium Lamp
LED Lamp
Wattage Ballast losses Installation Cost (Rs)
70 W 20 W 2500
30 W 5W 4900
Running Cost per year (Rs 6.5/unit) Replacement cost of lamp per year (Rs) (once every year) Replacement cost of ballast per year (Rs) (once in two years)
2562.3
996.45
300
0
500
0
Units saved per year
240.9
Power savings per year (Rs) Breakeven in years Return on Investment
2365.85 1.01 98.58%
150 W Sodium vs 60 W LED Sodium Lamp
LED Lamp
Wattage Ballast losses Installation Cost (Rs)
150 W 30 W 3500
60 W 5W 8600
Running Cost per year (Rs 6.5/unit) Replacement cost of lamp per year (Rs) (once every year) Replacement cost of ballast per year (Rs) (once in two years)
5124.6
1850.55
400
0
500
0
Units saved per year
254.04
Power savings per year (Rs) Breakeven in years Return on Investment
4174.05 1.22 81.84%
Contact person: Er Chintan Gandhi
Mo- 093-270-07854, Mail Id- lobelpower@gmail.com
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