The 25 contractors pulling the most building permits in Cambridge (Solar), ranked by PermitStack's activity score — built from 751 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | Great Sky Solar | 92 | 85 | solar | Aug 2026 |
| 2 | SUNBUG SOLAR LLC | 78 | 88 | battery, electrical, interior_remodel | Feb 2026 |
| 3 | The Boston Solar Company | 71 | 84 | electrical, hvac, solar | Aug 2026 |
| 4 | Boston Solar | 32 | 81 | battery, solar | Apr 2026 |
| 5 | ReVision Energy Inc | 29 | 96 | battery, electrical, hvac | Jun 2026 |
| 6 | Sunrun Installation Services, Inc | 24 | 100 | addition, battery, electrical | May 2026 |
| 7 | Trinity Solar Inc | 22 | 100 | battery, electrical, interior_remodel | Jun 2026 |
| 8 | Momentum Solar, LLC | 18 | 100 | addition, battery, electrical | May 2025 |
| 9 | Northeast Solar Services dba Revolusun | 18 | 50 | solar | Sep 2022 |
| 10 | ALL ENERGY SOLAR | 17 | 100 | addition, battery, demolition | Jan 2026 |
| 11 | Sunrun Inc | 12 | 100 | addition, battery, electrical | Jun 2026 |
| 12 | Vision Solar. LLC | 12 | 96 | addition, electrical, interior_remodel | Oct 2023 |
| 13 | INVALEON TECHNOLOGIES CORP. | 12 | 55 | interior_remodel, solar | Dec 2020 |
| 14 | TEAM SUNSHINE CONSTRUCTION LLC | 10 | 73 | electrical, interior_remodel, roofing | Jan 2026 |
| 15 | Viridis Energy Solutions LLC | 10 | 61 | interior_remodel, solar | Jun 2026 |
| 16 | Skyline Solar Inc. | 9 | 96 | electrical, interior_remodel, roofing | Dec 2025 |
| 17 | SOLECT ENERGY DEVELOPMENT LLC | 9 | 71 | interior_remodel, solar | Jan 2025 |
| 18 | NUWATT ENERGY LLC | 9 | 71 | hvac, interior_remodel, solar | Jun 2023 |
| 19 | Second Generation Energy | 9 | 59 | solar | Feb 2026 |
| 20 | SOLARFLAIR ENERGY | 9 | 58 | electrical, interior_remodel, solar | Oct 2024 |
| 21 | Empower Energy Solutions | 7 | 83 | battery, electrical, interior_remodel | Nov 2025 |
| 22 | Ecoloop Construction LLP | 7 | 76 | electrical, interior_remodel, solar | Oct 2025 |
| 23 | Bright Planet Solar | 6 | 100 | battery, electrical, grading | Aug 2023 |
| 24 | Tesla Energy, Inc | 6 | 100 | addition, battery, electrical | Apr 2026 |
| 25 | SUNLIGHT SOLAR ENERGY | 6 | 82 | interior_remodel, new_construction, solar | Jan 2023 |
"Score" is a 0–100 activity index from permit volume, recency, project value, and geographic reach. "Permits" counts building permits this contractor pulled in Cambridge (Solar).
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=MA&sort=score