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CFL (light bulb) savings calculator

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CFL (Compact Fluorescent Light) bulbs savings calculator provided by Energystar.gov.

Use the link below to download an Excel file to calculate savings from switching your conventional incandescent bulbs to energy-saving CFLs.

You provide inputs and the calculator figures out your savings based on:
  • Number of units (bulbs) and their wattage
  • Electricity rate (they provide a default of $0.113/kWh)
  • Hours used per day
  • Initial cost per unit (they provide assumptions of $3.40 for a CFL, $0.60 for a traditional bulb)

The calculator is easy to use and it's a great way to see how fast the savings build.



Download:  CalculatorCFLs.xls
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