Light bulbs calculations
See how much money you could save from simply changing a few lights.
Conservation, Start with the lights
Inputs
Number of Lights?
Hours per day?
Utility Rate?
$0.05 $0.06 $0.07 $0.08 $0.09 $0.10 $0.11 $0.12 $0.13 $0.14 $0.15 $0.16 $0.17 $0.18 $0.19 $0.20 $0.25 $0.30 $0.50 $0.75 $1.00 Off Grid
Time Frame?
1 month 3 months 1 year 2 year 3 year
Light Bulb (FAQs)
Incandescent
( inefficient )
Fluorescent
( efficient )
Initial costs:
$0.80
$5.00
Life Span (hours):
2,000
8,000
Watts per light:
60
13
Outputs
Costs for lights:
Number of lights:
Lights Percent:
Energy Usage:
Energy Costs:
Energy Percent:
Total Costs:
Savings
With Fluorescent lights, just like distributed energy, more of the cost is paid upfront
but an enormous efficiency advantage in operation and savings over time.
