Solar Panels Cost in Illinois (2026)
In Illinois, solar panels typically costs about $30,990 — about the national average of $31,000.
Why solar panels costs around the average in Illinois
Illinois ranks #19 of 51 states by overall price level, running about even with the U.S. average (BEA Regional Price Parities). Labor and materials — the two biggest inputs to solar panels — track that local price level closely. Illinois's combined average sales-tax rate of 8.96% also adds to the material portion of the bill.
Use the estimate above as a Illinois starting point, then get local quotes — prices vary widely by metro, contractor and the specifics of your project. For the full cost breakdown, what drives the price, and how to save, see the national solar panels cost report.
solar panels cost: Illinois vs nearby states
How Illinois compares with its neighbours for solar panels (estimates scaled by each state's price level):
| State | Estimated typical |
|---|---|
| Iowa | $27,210 |
| Kentucky | $27,950 |
| Missouri | $28,150 |
| Indiana | $28,930 |
| Wisconsin | $29,170 |
| Illinois (this state) | $30,990 |
Frequently asked questions
How much does solar panels cost in Illinois?
In Illinois, expect roughly $30,990 typically, with most projects between $27,490 and $44,980. That scales the U.S. typical by the state's price level; local quotes are the only way to get an exact figure.
Is solar panels more expensive in Illinois than elsewhere?
Illinois runs about the national average on overall prices, so solar panels tends to cost about the same than in a typical state.
What's included in this Illinois estimate?
It reflects the typical all-in cost for solar panels; the national report lists exactly what's included and what drives the price up or down.
How we estimate this
Every figure on this page is compiled from the public sources cited above and given as a low–typical–high range rather than a single false-precise number. Where costs vary by location we scale the national typical using published state price levels. We recheck figures on a set schedule and stamp each report with the date last verified. We are independent and are never paid to change a number — see how we price things.
