Union County, IL solar installation & market data
Updated September 18, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Union County has 141 solar installations across 6 zip codes, recent growth not yet measurable, and an installs-weighted Market Score of 41.
Active installations
141
Zip markets
6
Median cost
—
12-mo growth
—
Installers active
17
County Market Score
Good · installs-weighted across 6 zips
Best zip in Union County scores higher than 44% of U.S. zip markets.
Versus Illinois
How Union County compares with the state
Installed cost
—
state median $6.56/W
Market score
41 vs 43
Illinois scores 43
Share of state installs
0.13%
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
Union County by year
36 installs in the trailing twelve months vs 17 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Union County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | LGCY POWER | 7 | 6 | 2 | — |
| 2 | SUN SOLAR | 6 | 2 | 4 | — |
| 3 | ADVANCED ENERGY SOLUTIONS GROUP | 5 | 4 | 3 | — |
| 4 | SOLARSHIPS INSTALLATION SERVICES | 5 | 5 | 2 | — |
| 5 | STRAIGHTUP SOLAR | 4 | 3 | 2 | — |
| 6 | TITAN SOLAR POWER | 2 | 1 | 2 | — |
| 7 | OFF GRID ENERGY SOLUTIONS | 2 | 2 | 2 | — |
| 8 | CONTEMPORARY CONTRACTING | 2 | 2 | 2 | — |
| 9 | PARKER ENERGY SOLUTIONS | 2 | 0 | 1 | — |
| 10 | WJ BURKE ELECTRIC | 1 | 0 | 1 | — |
| 11 | KT POWER SYSTEMS | 1 | 0 | 1 | — |
| 12 | WW ENTERPRISES IL | 1 | 0 | 1 | — |
| 13 | WOLFPACK ELECTRIC | 1 | 1 | 1 | — |
| 14 | TRON SOLAR | 1 | 1 | 1 | — |
| 15 | CORVUS PRO SOLAR LLP | 1 | 0 | 1 | — |
| 16 | CR SOLAR | 1 | 1 | 1 | — |
| 17 | RESIDENTIAL SERVICE PROVIDERS | 1 | 0 | 1 | — |