Light costs money. That doesn't just mean this bulb costs more than that bulb. The cost of light also means how much you're paying every year to light up your space. Think the cost of a bulb is your biggest lighting expense? Look a little closer.
Cost of Light Formulas
Which would you rather buy? Two Simple Formulas:
A light bulb that costs $0.75 or a light bulb that costs $5.00? ...Depends on the Total Cost
Cost of Energy =
Watts Used X Energy Rate X Hours of Operation
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1000
Energy Savings =
Watts Saved X Energy Rate X Hours of Operation
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1000
Calculate the Cost of Energy Yourself:
Two Simple Examples:
Cost of 150 Watt Incandescent =
150 Watt x $0.10/Kwhr x 4,000 hrs
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