Prototype

Form
Usage How many lights are you replacing?
bulb(s)

What is your cost per kilo Watt hour (KWh)?
The average residential price of electricity in the U.S in 2014 was 10.41¢/kWh. To find the price per kWh for your state and sector, check your energy bill or the EIA database.

How often do you operate your lights?
Traditional Lighting What is the Wattage of each units?
Watt per unit

How much does each lights cost?
Include labor for installation, equipment rental, etc. as applicable.
USD per unit

What is the average lifespan of each units?
LED Replacement What is the Wattage of each LED units?
Watt per unit

How much does each LED units cost?
Include labor for installation, equipment rental, etc. as applicable.
USD per unit

What is the average lifespan of each LED units?
Quality LED lights starts at 50,000 hours.

Initial bulb cost
Wattage
Lifespan (continuous use)
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)
(after ) (after )