2025 Top Massachusetts Solar Contractors
This is the 2025 list of Top Solar Contractors completing work in Massachusetts. The kilowatts listed as being installed in the state reflect only kilowatts installed in Massachusetts in 2024. Companies listed on this state list could be headquartered in other states, participate in any market (residential, commercial, community solar, utility) and provide any installation service (EPC, developer, installer, installation subcontractor, electrical subcontractor, sales partner).
The listed kilowatts installed by each company in Massachusetts could come from installations in all markets (residential, commercial, community solar, utility) but only within Massachusetts state lines.
The companies below are a segmented portion of the overall 2025 Top Solar Contractors List, organized by kilowatts (DC) installed in 2024.
For more information on Solar Power World‘s annual Top Solar Contractors List and additional sublists, visit our Top Solar Contractors home page.
| Massachusetts Rank | Company | kW Installed In Massachusetts | Markets Served | Primary Service | Total kW installed in U.S. in 2024 | Overall Rank |
|---|---|---|---|---|---|---|
| 1 | Solect Energy | 21,071.47 | C&I | Developer | 25,205.19 | 113 |
| 2 | ACE Solar | 20,057.52 | C&I | EPC | 74,013.36 | 62 |
| 3 | Freedom Forever | 19,793.99 | R | Installer | 400,513.83 | 25 |
| 4 | Mill Creek Renewables | 19,128.88 | U | CS | EPC | 385,456.13 | 27 |
| 5 | Trinity Solar | 16,938.92 | R | Installer | 128,600.21 | 45 |
| 6 | CTEC Solar | 16,800.00 | U | C&I | EPC | 43,289.12 | 86 |
| 7 | Next Generation Solar | 11,518.20 | C&I | CS | EPC | 79,699.34 | 56 |
| 8 | Standard Solar | 10,681.10 | U | C&I | CS | Developer | 203,996.54 | 35 |
| 9 | Nexamp | 7,891.44 | CS | Developer | 269,148.48 | 31 |
| 10 | Arevon Energy | 6,855.00 | U | C&I | Developer | 557,158.00 | 21 |
| 11 | Ameresco | 6,255.78 | C&I | CS | Developer | 84,151.28 | 53 |
| 12 | Agilitas Energy | 5,700.00 | U | Developer | 5,700.00 | 205 |
| 13 | DCE Services | 5,092.47 | C&I | Installation Subcontractor | 116,909.53 | 46 |
| 14 | ReVision Energy | 4,792.55 | C&I | CS | R | Installer | 36,168.42 | 92 |
| 15 | Dynamic Energy | 4,500.00 | C&I | CS | EPC | 31,915.00 | 100 |
| 16 | M Bar C Construction | 3,539.00 | C&I | Installation Subcontractor | 77,440.00 | 58 |
| 17 | My Generation Energy | 3,523.27 | C&I | R | Installer | 3,523.27 | 240 |
| 18 | PV Squared | 3,389.01 | C&I | R | Installer | 3,523.34 | 239 |
| 19 | Resonant Energy | 3,315.67 | C&I | R | Developer | 3,315.67 | 248 |
| 20 | Valley Solar | 2,865.62 | C&I | R | Installer | 2,865.62 | 261 |
| 21 | New England Clean Energy | 1,764.37 | R | Installer | 2,000.05 | 293 |
| 22 | SGE Solar | 1,558.84 | C&I | R | EPC | 1,606.47 | 315 |
| 23 | PowerFlex | 1,401.00 | C&I | CS | Developer | 55,868.00 | 79 |
| 24 | ForeFront Power | 1,265.40 | C&I | Developer | 35,693.23 | 94 |
| 25 | Solaris Renewables | 1,179.26 | R | Installer | 1,253.65 | 341 |
| 26 | All Energy Solar | 986.84 | C&I | R | Installer | 26,438.91 | 110 |
| 27 | Sole Contracting | 921.12 | C&I | CS | Installation Subcontractor | 136,884.67 | 44 |
| 28 | Brightstar Solar | 595.08 | R | Installer | 595.08 | 375 |
| 29 | Greenfield Solar | 444.16 | C&I | R | Installer | 444.16 | 382 |
| 30 | NRGTree | 367.65 | C&I | R | EPC | 367.65 | 387 |
| 31 | Catalyze | 251.83 | C&I | CS | Developer | 81,381.13 | 55 |
| 32 | Utopian Power | 245.00 | C&I | Developer | 3,479.00 | 241 |
| 33 | Solar Renewable Energy | 235.00 | C&I | Developer | 15,322.00 | 134 |
| 34 | Harvest Power | 234.60 | C&I | R | Installer | 7,584.81 | 185 |
| 35 | HSI Solar | 50.44 | C&I | Developer | 9,241.90 | 168 |
| 36 | Harmony Energy Works | 9.49 | C&I | R | EPC | 367.74 | 386 |