Rantoul, IL 61866 solar market data
Updated August 20, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Rantoul 61866 has 36 solar installations, recent growth not yet measurable, and a Market Score of 41 — higher than 42% of U.S. zip markets.
Versus Illinois
How 61866 compares with the state
Installed cost
—
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
0.03%
of 112.7K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
▲ 23.1%
residential solar added in Illinois, 12 months through Jul 2026
Statewide market
136.9K systems
4.0% of homes · utility-reported through Jul 2026
Growth & pricing
61866 by year
6 installs in the trailing twelve months vs 8 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 61866
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | TRON SOLAR | 2 | 2 | 10.58 | — |
| 2 | RADIANT SOLAR | 2 | 1 | 27.17 | — |
| 3 | LEGACY SOLAR | 2 | 0 | 12.99 | — |
| 4 | AG TECHNOLOGIES | 1 | 1 | 19.44 | — |
| 5 | CR SOLAR | 1 | 1 | 4.8 | — |
| 6 | FREEDOM FOREVER | 1 | 1 | 6.48 | — |
| 7 | ADT SOLAR | 1 | 0 | 3.24 | — |
| 8 | MIDWEST LIVE WIRE | 1 | 0 | 9.59 | — |
| 9 | ROUTE 66 SOLAR | 1 | 0 | 9.72 | — |
Frequently asked
Quick answers about 61866
How many solar installations are there in 61866?
SolarDNA counts 36 active solar installations in Rantoul 61866, 28 of them residential, with data through August 20, 2026.
How much does solar cost in 61866?
Not enough priced systems in 61866 to report a median.
Is solar growing in 61866?
Recent growth cannot be measured yet for 61866: too few recent installs (data runs through August 20, 2026).
Who installs solar in 61866?
TRON SOLAR, RADIANT SOLAR, LEGACY SOLAR lead the 9 installers with systems in 61866. The full comp set is above.
Is 61866 a good market for solar sales?
61866 scores 41 out of 100 (Good, higher than 42% of U.S. zip markets). With under 500 installations the score is provisional.