| Rank | Company | Overall Rank | City | State | Employees | Primary Market | Primary Service | Total Megawatts Installed | Total Megawatts 2016 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Safari Energy | 47 | New York | NY | 35 | Commercial | EPC | 131.0 | 45.0 |
| 2 | UGE | 64 | New York | NY | 60 | Commercial | Developer | 67,789.0 | 22.4 |
| 3 | EnterSolar | 65 | New York | NY | 37 | Commercial | Developer | 158,243.3 | 20.2 |
| 4 | Kasselman Solar | 80 | Albany | NY | 35 | Residential | Rooftop Contractor | 22.0 | 13.8 |
| 5 | SUNation Solar Systems | 128 | Ronkonkoma | NY | 75 | Residential | Developer | 64,733.1 | 6.4 |
| 6 | Apex Solar Power | 132 | Queensbury | NY | 135 | Residential | Rooftop Contractor | 71,930.0 | 6.1 |
| 7 | Tectonic Engineering & Surveying Consultants P.C. | 150 | Mountainville | NY | 500 | Commercial | EPC | 30.0 | 5.0 |
| 8 | Monolith Solar | 168 | Rensselaer | NY | 72 | Commercial | Developer | 40.0 | 4.1 |
| 9 | Solar by CIR | 172 | Buffalo | NY | 124 | Commercial | Construction Firm | 48,784.2 | 4.1 |
| 10 | SunPower by Infinity Solar | 179 | Pearl River | NY | 60 | Residential | EPC | 16.0 | 3.8 |
| 11 | Con Edison Solutions | 190 | Valhalla | CT | 36 | Residential | EPC | 40,000.0 | 3.2 |
| 12 | EmPower Solar | 192 | Island Park | NY | 70 | Residential | EPC | 29,578.0 | 3.1 |
| 13 | Harvest Power | 207 | Islip Terrace | NY | 65 | Residential | Rooftop Contractor | 31,500.0 | 2.8 |
| 14 | SunPower by New York State Solar Farm | 247 | Modena | NY | 30 | Residential | EPC | 10.0 | 2.0 |
| 15 | Sustainable Energy Developments | 292 | Ontario | NY | 30 | Residential | Developer | 20.0 | 1.3 |
| 16 | Lighthouse Solar Hudson Valley | 294 | New Paltz | NY | 10 | Commercial | Rooftop Contractor | 4.0 | 1.2 |
| 17 | Simply Solar Systems | 304 | Hamlin | NY | 10 | Commercial | Construction Firm | 8.0 | 1.2 |
| 18 | Built Well Solar | 313 | Wantagh | NY | 18 | Residential | Rooftop Contractor | 9,106.5 | 1.1 |
| 19 | 2K Solar | 370 | Middletown | NY | 11 | Residential | Rooftop Contractor | 2.6 | 0.7 |
| 20 | American Solar Install | 395 | Brooklyn | NY | 15 | Residential | Electrical Subcontractor | 1.5 | 0.5 |
| 21 | Solar Generation | 414 | Kingston | NY | 8 | Residential | EPC | 3,788.3 | 0.4 |
| 22 | Collegiate Builders | 448 | Buffalo | NY | 17 | Residential | EPC | 478.0 | 0.3 |
| 23 | Alternative Power Solutions of NY | 459 | East Syracuse | NY | 4 | Residential | Rooftop Contractor | 3.0 | 0.2 |
| 24 | Upstate Alternative Energy | 482 | Baldwinsville | NY | 3 | Residential | EPC | 0.3 | 0.1 |