The Average Cost of Solar in Illinois
For a standard single-family home requiring an 8kW (kilowatt) system, the gross cost typically ranges between $22,000 and $28,000. This translates to an average cost of $2.75 to $3.50 per watt. However, paying the gross price is rare.
Metric | Estimated Value (8kW System) |
|---|---|
Gross System Cost | $24,000 |
Federal Tax Credit (30%) | -$7,200 |
Illinois Shines (SREC) Value | -$6,000 to -$9,000 (Varies by Utility) |
Estimated Net Cost | $7,800 to $10,800 |





