Alton, IL 62002 solar market data
Updated September 23, 2026Provisional score · under 500 installs By The SolarDNA Data Team
Alton 62002 has 267 solar installations, installations up 44.1% over the trailing twelve months, and a Market Score of 53 — higher than 97% of U.S. zip markets.
Zip Market Score
Excellent · higher than 97% of zips
Versus Illinois
How 62002 compares with the state
Installed cost
—
state median $6.56/W
Market score
53 vs 43
Illinois scores 43
Share of state installs
0.24%
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
Next-12-month outlook: 96–130 installs (midpoint 113)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±15% band. Not a forecast of permits or policy.
Growth & pricing
62002 by year
98 installs in the trailing twelve months vs 68 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 62002
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | LGCY POWER | 27 | 24 | 9.51 | — |
| 2 | FREEDOM FOREVER | 17 | 16 | 10.93 | — |
| 3 | CR SOLAR | 13 | 9 | 14.48 | — |
| 4 | AMBIA ENERGY | 10 | 10 | 9.15 | — |
| 5 | GOODPWR | 7 | 7 | 9.09 | — |
| 6 | ARF SOLAR | 7 | 2 | 9.96 | — |
| 7 | APTIVE SOLAR DBA AMBIA ENERGY | 6 | 6 | 9.47 | — |
| 8 | CONTEMPORARY CONTRACTING | 5 | 1 | 11.76 | — |
| 9 | SUN SOLAR | 5 | 1 | 10.82 | — |
| 10 | SOLARSHIPS INSTALLATION SERVICES | 4 | 4 | 9.08 | — |
| 11 | ROUTE 66 SOLAR | 4 | 1 | 13.65 | — |
| 12 | GREENGRIDS | 3 | 3 | 16.91 | — |
Frequently asked
Quick answers about 62002
How many solar installations are there in 62002?
SolarDNA counts 267 active solar installations in Alton 62002, 245 of them residential, with data through September 23, 2026.
How much does solar cost in 62002?
Not enough priced systems in 62002 to report a median.
Is solar growing in 62002?
Installations in 62002 are up 44.1%: 98 in the trailing twelve months versus 68 before.
Who installs solar in 62002?
LGCY POWER, FREEDOM FOREVER, CR SOLAR lead the 38 installers with systems in 62002. The full comp set is above.
Is 62002 a good market for solar sales?
62002 scores 53 out of 100 (Excellent, higher than 97% of U.S. zip markets). With under 500 installations the score is provisional.