Number of incandescent bulbs to be replaced to LED bulbs:
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Incand. bulb |
LED bulb |
Initial bulb cost |
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Wattage |
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Electricity cost () |
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Life span (continuous use) |
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Life span when used for
|
|
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Number of times an incandescent bulb to be replaced each year |
|
- |
Number of times an incandescent bulb to be replaced during the LED bulb's life span
() |
|
- |
Cost of bulb replacements each year
([Incand. bulb cost] × [Number of replacement per year]) |
|
- |
Annual labor cost of incand. bulb replacement
([Labor cost per incand. bulb] × [Number of replacement per year]) |
|
- |
Total annual cost
([Cost of bulb replacement] + [Electricity] + [Labor cost]) |
|
(same as the annual electricity cost) |
Total cost
(after ) |
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Total savings with LED bulb
(after ) |
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Break-even point
(The amount of time necessary to save as much money as you invested initially) |
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