Illinois
Solar Cost for a $200/month Electric Bill in Illinois
A $200/month bill in Illinois usually needs a 10 kW rooftop solar system. Estimated cost: $40,000 before incentives, $28,000 after, with a payback of 11.7 years.
Recommended size
10 kW
Net cost (after incentives)
$28,000
Estimated payback
11.7 yrs
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Tip: each 1 kW needs about 80–100 sq ft of unshaded roof.
Est. monthly units625 kWh
Tariff used₹8/kWh
Recommended system
5 kW
System cost
₹3.65 L
Yearly savings
₹57,600
Payback period
6.3 years
25-year net savings
₹10.75 L
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Estimated system3 kW · ₹1.41 L net
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