The 25 contractors pulling the most building permits in Illinois (Illinois Shines), ranked by PermitStack's activity score — built from 118,596 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | Sunrun Installation Services Inc. | 33,520 | 84 | solar | May 2026 |
| 2 | Freedom Forever Illinois LLC | 5,179 | 85 | solar | May 2026 |
| 3 | Vivint Solar Developer, LLC | 4,001 | 77 | solar | Oct 2024 |
| 4 | SUNPOWER CAPITAL SERVICES, LLC | 2,625 | 83 | solar | Feb 2026 |
| 5 | Certasun LLC | 2,591 | 86 | solar | May 2026 |
| 6 | Legacy Solar, LLC | 1,777 | 98 | solar | Apr 2026 |
| 7 | Bright Planet Solar, Inc. | 1,690 | 84 | solar | May 2026 |
| 8 | Blue Raven Solar, LLC | 1,538 | 83 | solar | Apr 2026 |
| 9 | ADT Solar | 1,383 | 84 | solar | May 2026 |
| 10 | Bright Planet Solar, Inc | 1,358 | 84 | solar | May 2026 |
| 11 | Tesla, Inc. | 1,298 | 84 | solar | May 2026 |
| 12 | Iconic Energy LLC | 1,207 | 99 | solar | May 2026 |
| 13 | CR Solar, LLC | 1,190 | 86 | solar | May 2026 |
| 14 | LGCY Installation Services, LLC | 1,112 | 84 | solar | May 2026 |
| 15 | TITAN SOLAR POWER | 1,032 | 85 | solar | May 2026 |
| 16 | Freedom Forever Illinois, LLC | 991 | 84 | solar | May 2026 |
| 17 | Revolution energy systems inc. | 931 | 83 | solar | May 2026 |
| 18 | GRNE Solutions LLC | 927 | 91 | solar | Nov 2024 |
| 19 | Summit Solar Solutions, LLC | 877 | 64 | solar | Jun 2022 |
| 20 | Tron Solar, LLC | 868 | 85 | solar | May 2026 |
| 21 | Sunrun Installation Services Inc. | 867 | 59 | solar | Jul 2026 |
| 22 | LGCY Installation Services LLC | 829 | 83 | solar | May 2026 |
| 23 | Iconic Energy | 734 | 96 | solar | Feb 2026 |
| 24 | IL-Solar, Inc | 714 | 98 | solar | May 2026 |
| 25 | Palmetto Solar LLC | 696 | 78 | solar | Sep 2025 |
"Score" is a 0–100 activity index from permit volume, recency, project value, and geographic reach. "Permits" counts building permits this contractor pulled in Illinois (Illinois Shines).
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=IL&sort=score