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Every dollar you spend on making your home more efficient saves you approximately $3 in energy costs.
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For each $1 you invest in energy efficient lighting, you will be paid back up to $6 in energy savings. Think about it this way: if you use a 75-watt incandescent for six hours a day, you’d pay approximately $54 a year on energy (this includes the costs of replacement bulbs at 75 cents per bulb). A 20-watt CFL with the same light output would cost $14 a year to power. That bulb would cost $6 to purchase initially but it’d last four years for six hours a day, so the total expenditure per year would be $15.50. That’s $38.50 less per year, which is a return on investment of 642%!
Source: Pegasus Lighting blog
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How much does using energy efficient lighting and appliances really save me money?
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