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CFL Light Bulb Calculator

Alliant Energy customers in Iowa, Minnesota and Wisconsin can get cash-back rewards on compact fluorescent light bulbs.

NOTES:

  1. Figures based on an average light bulb usage of 60 hours per month.
  2. Savings Calculation Formula: Bulb Wattage x Usage Hours Per Month / 1,000 x $.10 (average cost of electricity per kWh) = Total Operating Cost Per Month

Notice: This calculator is intended for estimation purposes only and the savings shown are not guaranteed.