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Solar PV · Illinois

Solar Panel Cost in Illinois (2026)

Planning-range installed cost for residential solar PV in Illinois, adjusted for state labor multipliers and PVWatts production yield. 25D federal credit expired 2025-12-31; state and utility programs still apply.

Mid installed cost · 7 kW system · Illinois

$27,258

Range $20,650–$37,170 gross

Cost basics

Mid $/W
$3.89
Range $/W
$2.95–$5.31
State labor multiplier
1.18×
PV specific yield
1300 kWh/kW/yr

Production & payback

7 kW annual production
9,100 kWh
Local electricity rate
$0.17/kWh
Annual bill displaced
$1,583/yr
Simple payback (mid)
17.2 yr

25D federal credit (30%) expired 2025-12-31. State and utility programs may shorten payback. Net-metering successor tariff (NEM 3.0 in CA, similar in HI, AZ, NY) reduces export value.

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