★ 2025 Top Solar Contractors
2025 Top Solar Developers
This is the list of 2025 Top Solar Contractors that primarily perform development work. These companies chose their primary service as “developer” when applying to the list, and they may also work as EPCs, installers, electrical subcontractors, installation subcontractors and sales partners. The listed kilowatts installed by each company could be performed within multiple services and not just development work.
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.
| Developer Rank | Company | Overall Rank | HQ State | Markets | kW Installed in 2024 |
|---|---|---|---|---|---|
| 1 | Lightsource bp | 9 | CA | U | 1,785,060.00 |
| 2 | Silicon Ranch | 15 | Tennessee | U | C&I | 769,000.00 |
| 3 | SYMX Energy | 16 | Florida | U | 729,000.00 |
| 4 | Arevon Energy | 21 | Arizona | U | C&I | 557,158.00 |
| 5 | Nexamp | 31 | Massachusetts | CS | 269,148.48 |
| 6 | Standard Solar | 35 | Maryland | U | C&I | CS | 203,996.54 |
| 7 | Pivot Energy | 42 | Colorado | C&I | CS | 164,727.59 |
| 8 | Ameresco | 53 | Massachusetts | C&I | CS | 84,151.28 |
| 9 | SunVest Solar | 54 | Illinois | C&I | CS | 81,552.86 |
| 10 | Catalyze | 55 | Colorado | C&I | CS | 81,381.13 |
| 11 | Carolina Solar Energy | 59 | NC | U | 76,650.00 |
| 12 | Altus Power | 63 | CT | C&I | CS | 73,257.89 |
| 13 | New Energy Equity | 64 | Maryland | C&I | CS | 72,901.47 |
| 14 | Aggreko Energy Transition Solutions | 73 | CT | C&I | CS | 65,357.20 |
| 15 | Solar Landscape | 75 | New Jersey | C&I | 62,623.85 |
| 16 | PowerFlex | 79 | CA | C&I | CS | 55,868.00 |
| 17 | REC Power | 89 | California | C&I | 36,616.71 |
| 18 | ForeFront Power | 94 | California | C&I | 35,693.23 |
| 19 | CVE North America | 102 | NY | CS | 30,865.00 |
| 20 | Renewable Properties | 105 | CA | CS | 29,010.27 |
| 21 | Verogy | 107 | CT | U | C&I | 28,306.02 |
| 22 | dGEN Energy Partners | 108 | Wyoming | C&I | 27,786.00 |
| 23 | Solect Energy | 113 | MA | C&I | 25,205.19 |
| 24 | Encore Renewable Energy | 115 | Vermont | CS | 24,937.00 |
| 25 | Solar Renewable Energy | 134 | Pennsylvania | C&I | 15,322.00 |
| 26 | Entegrity Energy Partners | 137 | Arkansas | C&I | 14,277.00 |
| 27 | HSI Solar | 168 | Indiana | C&I | 9,241.90 |
| 28 | Solar One | 174 | Texas | C&I | 8,194.74 |
| 29 | US Light Energy | 193 | NY | CS | 6,738.46 |
| 30 | Agilitas Energy | 205 | MA | U | 5,700.00 |
| 31 | Green Development | 206 | RI | U | 5,656.00 |
| 32 | Scenic Hill Solar | 227 | Arkansas | C&I | 4,149.23 |
| 33 | Utopian Power | 241 | MI | C&I | 3,479.00 |
| 34 | Resonant Energy | 248 | Massachusetts | C&I | R | 3,315.67 |
| 35 | Unity Solar Group | 252 | Illinois | R | 3,207.32 |
| 36 | O3 Energy | 280 | Texas | C&I | 2,349.89 |
| 37 | RxSun | 282 | Illinois | R | 2,303.42 |
| 38 | New Columbia Solar | 284 | DC | C&I | 2,239.43 |
| 39 | Ace LLC Solar | 364 | TN | C&I | R | 787.90 |