| Rank | Company | Overall Rank | City | State | Employees | Primary Market | Primary Service | Total Megawatts Installed | Total Megawatts 2016 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | E Light Electric | 11 | Englewood | CO | 575 | Utility | Electrical Subcontractor | 3,453,880.00 | 370.81 |
| 2 | Northern Energy and Power | 27 | Thornton | CO | 200 | Utility | Electrical Subcontractor | 175.00 | 135.00 |
| 3 | RGS Energy | 84 | Denver | CO | 100 | Residential | Developer | 260.00 | 13.01 |
| 4 | Namaste Solar | 94 | Boulder | CO | 130 | Commercial | EPC | 183,691.50 | 10.48 |
| 5 | RES (Renewable Energy Systems) | 97 | Denver | CO | 500 | Utility | EPC | 3,400,000.00 | 10.00 |
| 6 | Clean Energy Collective | 106 | Louisville | CO | 107 | Residential | Developer | 23.22 | 8.67 |
| 7 | Sunsense Solar | 188 | Carbondale | CO | 28 | Commercial | EPC | 26,650.00 | 3.20 |
| 8 | EcoMark Solar | 196 | Denver | CO | 89 | Residential | Developer | 24,327.39 | 3.01 |
| 9 | Bella Energy | 238 | Boulder | CO | 10 | Commercial | Developer | 14.59 | 2.09 |
| 10 | Southard Solar and Construction | 272 | Denver | CO | 12 | Residential | EPC | 10,000.00 | 1.50 |
| 11 | Independent Power Systems | 307 | Boulder | CO | 35 | Residential | EPC | 21,000.00 | 1.18 |
| 12 | Solarado Energy | 331 | Salida | CO | 23 | Residential | EPC | 3.98 | 0.97 |
| 13 | Peak View Solar | 345 | Colorado Springs | CO | 9 | Residential | Rooftop Contractor | 5,772.00 | 0.86 |
| 14 | Atlasta Solar Center | 355 | Grand Junction | CO | 15 | Residential | EPC | 12,167.53 | 0.75 |
| 15 | Shaw Solar | 368 | Durango | CO | 11 | Residential | EPC | 11,533.12 | 0.68 |
| 16 | Thames Solar Electric | 382 | Denver | CO | 3 | Off-Grid | EPC | 3.00 | 0.57 |
| 17 | High Noon Solar | 407 | Grand Junction | CO | 9 | Residential | Rooftop Contractor | 6.00 | 0.44 |
| 18 | Stellar Energy Contractors | 438 | Denver | CO | 20 | Residential | Rooftop Contractor | 1.00 | 0.34 |
| 19 | Complete Energy Solutions | 479 | Denver | CO | 25 | Commercial | Rooftop Contractor | 2,000.00 | 0.15 |
| 20 | Living Solar | 480 | Durango | CO | 4 | Residential | EPC | 3,608.00 | 0.15 |
| 21 | Peak Solar Designs | 485 | Salida | CO | 4 | Residential | Rooftop Contractor | 4,000.00 | 0.12 |