Iowa / Marshalltown

Is solar worth it in Marshalltown?

Interstate Power and Light Co averages 17.9¢/kWh. With 4.4 peak sun hours a day, a typical 8.0 kW system makes ~10,328 kWh a year and saves about $1,849 in year one.

10.3years to pay off
Electric rate17.9¢per kWh
Peak sun4.4hrs/day
System8.0 kW≈$22,000
25-yr net$45,414after cost

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