Number of light units to be replaced to LED units: 1 unit
Old fixture | LED fixture | |
Initial cost | $1.00 | $50.00 |
Wattage | 75 Watt | 9 Watt |
Electricity cost (12.6¢/kWh) | $41.39 per year | $4.97 per year |
Lifespan (continuous use) | 1,250 hours | 50,000 hours |
Lifespan when used for 12 hours a day, 7 days a week |
3 months 13 days | 11 years 4 months 30 days |
No. of times an old fixture to be replaced each year | 3.50 times | – |
No. of times an old fixture to be replaced during the LED fixture’s lifespan (11 years 4 months 30 days) |
40 times | – |
Cost of replacements each year ([Incand. bulb cost] × [Number of replacement per year]) |
$3.50 | – |
Total annual cost ([Cost of replacing fixtures] + [Electricity] + [Labor cost]) |
$44.90 per year |
$4.97 per year (same as the annual electricity cost) |
Total cost (after 11 years 4 months 30 days) |
$513 | $106 |
Total savings /w LED fixture (ROI) (after 11 years 4 months 30 days) |
$513 − $106 = $407 | |
Break-even point (The amount of time necessary to save as much money as you invested initially) |
1 year 2 months 22 days |