| Rank | Company | Overall Rank | City | State | Employees | Primary Market | Primary Service | Total Megawatts Installed | Total Megawatts 2016 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | First Solar | 2 | Tempe | AZ | 6,350 | Utility | Developer | 6.00 | 1.00 |
| 2 | CSW Contractors | 6 | Scottsdale | AZ | 500 | Utility | Construction Firm | 1.00 | 670.00 |
| 3 | DEPCOM Power | 25 | Scottsdale | AZ | 65 | Utility | EPC | 1,705,900.00 | 140.00 |
| 4 | Alpha Energy | 30 | Phoenix | AZ | 2,000 | Utility | EPC | 500.00 | 120.00 |
| 5 | Resolute Performance Contracting | 115 | Tempe | AZ | 55 | Commercial | Construction Firm | 64,440.00 | 7.44 |
| 6 | Veregy | 117 | Phoenix | AZ | 6 | Commercial | Developer | 180,950.00 | 7.38 |
| 7 | Solar Topps | 121 | Phoenix | AZ | 80 | Residential | EPC | 177,000.00 | 7.00 |
| 8 | Premier Solar Solutions | 151 | Phoenix | AZ | 85 | Residential | EPC | 30.00 | 5.00 |
| 9 | Harmon Electric | 173 | Phoenix | AZ | 100 | Residential | Rooftop Contractor | 64,343.66 | 4.00 |
| 10 | PEP Solar | 251 | Phoenix | AZ | 22 | Residential | Rooftop Contractor | 14.00 | 1.80 |
| 11 | American Solar & Roofing | 257 | Phoenix | AZ | 55 | Residential | Rooftop Contractor | 14,086.00 | 1.70 |
| 12 | SunRenu Solar | 261 | Scottsdale | AZ | 18 | Commercial | EPC | 38,907.00 | 1.63 |
| 13 | SunHarvest Solar | 267 | Phoenix | AZ | 15 | Residential | Rooftop Contractor | 21.00 | 1.50 |
| 14 | Solar Solution AZ | 315 | Tucson | AZ | 90 | Residential | Rooftop Contractor | 3.00 | 1.10 |
| 15 | Empire Renewable Energy | 330 | Mesa | AZ | 15 | Commercial | EPC | 29,607.00 | 0.97 |
| 16 | Sunny Energy | 360 | Tempe | AZ | 14 | Residential | EPC | 46,268.00 | 0.75 |
| 17 | Arizona Energy Pros | 392 | Phoenix | AZ | 11 | Residential | Rooftop Contractor | 13,068.93 | 0.50 |
| 18 | The Solar Store | 393 | Tucson | AZ | 13 | Residential | Rooftop Contractor | 8,291.00 | 0.50 |
| 19 | Energy Solution Providers | 405 | Florence | AZ | 11 | Residential | Rooftop Contractor | 5.00 | 0.45 |
| 20 | Custom Solar and Leisure | 412 | Tucson | AZ | 9 | Residential | Rooftop Contractor | 3.00 | 0.41 |
| 21 | Cool Blew Solar & Electric | 416 | Peoria | AZ | 49 | Residential | Rooftop Contractor | 10,684.00 | 0.40 |