| 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 | 131.00 | 45.00 |
| 2 | UGE | 64 | New York | NY | 60 | Commercial | Developer | 67,789.00 | 22.37 |
| 3 | Kasselman Solar | 80 | Menands | NY | 35 | Residential | Rooftop Contractor | 30,000.00 | 13.75 |
| 4 | SUNation Energy | 128 | Ronkonkoma | NY | 75 | Residential | Developer | 115,276.14 | 6.40 |
| 5 | Apex Solar Power | 132 | Queensbury | NY | 135 | Residential | Rooftop Contractor | 71,930.00 | 6.10 |
| 6 | Tectonic Engineering | 150 | Mountainville | NY | 500 | Commercial | EPC | 30.00 | 5.00 |
| 7 | Monolith Solar | 168 | Rensselaer | NY | 72 | Commercial | Developer | 40.00 | 4.14 |
| 8 | Solar by CIR | 172 | Grand Island | NY | 124 | Commercial | Construction Firm | 102,333.49 | 4.07 |
| 9 | SunPower by Infinity Solar | 179 | Pearl River | NY | 60 | Residential | EPC | 16.00 | 3.80 |
| 10 | Con Edison Solutions | 190 | Valhalla | CT | 36 | Residential | EPC | 40,000.00 | 3.15 |
| 11 | EmPower Solar | 192 | Island Park | NY | 70 | Residential | EPC | 50,000.00 | 3.11 |
| 12 | Harvest Power | 207 | Islip Terrace | NY | 65 | Residential | Rooftop Contractor | 59,438.00 | 2.75 |
| 13 | SunPower by New York State Solar Farm | 247 | Modena | NY | 30 | Residential | EPC | 10.00 | 1.95 |
| 14 | Sustainable Energy Developments | 292 | Ontario | NY | 30 | Residential | Developer | 20.00 | 1.25 |
| 15 | Lighthouse Solar Hudson Valley | 294 | New Paltz | NY | 10 | Commercial | Rooftop Contractor | 3.98 | 1.24 |
| 16 | Simply Solar Systems | 304 | Hamlin | NY | 10 | Commercial | Construction Firm | 8.00 | 1.20 |
| 17 | Built Well Solar | 313 | Bayville | NY | 18 | Residential | Rooftop Contractor | 9,519.00 | 1.10 |
| 18 | 2K Solar | 370 | Middletown | NY | 11 | Residential | Rooftop Contractor | 2.60 | 0.65 |
| 19 | American Solar Install | 395 | Brooklyn | NY | 15 | Residential | Electrical Subcontractor | 1.50 | 0.50 |
| 20 | Solar Generation | 414 | Kingston | NY | 8 | Residential | EPC | 22,000.00 | 0.40 |
| 21 | Collegiate Builders | 448 | Buffalo | NY | 17 | Residential | EPC | 478.00 | 0.30 |
| 22 | Alternative Power Solutions of NY | 459 | Syracuse | NY | 4 | Residential | Rooftop Contractor | 4,624.00 | 0.22 |
| 23 | Upstate Alternative Energy | 482 | Baldwinsville | NY | 3 | Residential | EPC | 0.32 | 0.14 |