Form Options

Old fixture (to be replaced)

Incandescent / Halogen: 1,250 hours
Metal Halide: 6,000 hours
Fluorescent/CFL: 8,000 hours
Pulse Start Metal Halide (PSMH): 15,000 hours
High Pressure Sodium (HPS): 20,000 hours

LED fixture (new fixture)

LED: 50,000 hours

Energy rate

The average residential price of electricity in the U.S. in 2015 was 12.66¢/kWh.
To find the price per kWh (Kilo Watt hour) for your state and sector, check your energy bill or go to the EIA website.

Hours of operation
Other factors (optional)


Number of light units to be replaced to LED units:

Old fixture LED fixture
Initial cost
Electricity cost ()
Lifespan (continuous use)
Lifespan when used for
No. of times an old fixture to be replaced each year -
No. of times an old fixture to be replaced during the LED fixture's lifespan () -
Cost of replacements each year -
Total annual cost ([Cost of replacing fixtures] + [Electricity] + [Labor cost]) (same as the annual electricity cost)
Total cost (after )
Total savings /w LED fixture (ROI) (after )
Break-even point (The amount of time necessary to save as much money as you invested initially)

Print the results