| 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 | 6.0 | 1.0 |
| 2 | CSW Contractors | 6 | Scottsdale | AZ | 500 | Utility | Construction Firm | 1.0 | 670.0 |
| 3 | DEPCOM Power | 25 | Scottsdale | AZ | 65 | Utility | EPC | 1,269,800.0 | 140.0 |
| 4 | Alpha Energy | 30 | Phoenix | AZ | 2,000 | Utility | EPC | 500.0 | 120.0 |
| 5 | Resolute Performance Contracting | 115 | Tempe | AZ | 55 | Commercial | Construction Firm | 56,977.3 | 7.4 |
| 6 | Veregy | 117 | Phoenix | AZ | 6 | Commercial | Developer | 142,174.0 | 7.4 |
| 7 | Solar Topps | 121 | Phoenix | AZ | 80 | Residential | EPC | 40.0 | 7.0 |
| 8 | Premier Solar Solutions | 151 | Phoenix | AZ | 85 | Residential | EPC | 30.0 | 5.0 |
| 9 | Harmon Electric | 173 | Phoenix | AZ | 100 | Residential | Rooftop Contractor | 45,482.6 | 4.0 |
| 10 | PEP Solar | 251 | Phoenix | AZ | 22 | Residential | Rooftop Contractor | 14.0 | 1.8 |
| 11 | American Solar & Roofing | 257 | Tempe | AZ | 55 | Residential | Rooftop Contractor | 30.6 | 1.7 |
| 12 | SunRenu Solar | 261 | Scottsdale | AZ | 18 | Commercial | EPC | 23,414.0 | 1.6 |
| 13 | SunHarvest Solar | 267 | Phoenix | AZ | 15 | Residential | Rooftop Contractor | 21.0 | 1.5 |
| 14 | Solar Solution AZ | 315 | Tucson | AZ | 90 | Residential | Rooftop Contractor | 3.0 | 1.1 |
| 15 | Empire Renewable Energy | 330 | Phoenix | AZ | 15 | Commercial | EPC | 26,563.0 | 1.0 |
| 16 | Sunny Energy | 360 | Tempe | AZ | 14 | Residential | EPC | 20,080.0 | 0.8 |
| 17 | Arizona Energy Pros | 392 | Phoenix | AZ | 11 | Residential | Rooftop Contractor | 2.0 | 0.5 |
| 18 | The Solar Store | 393 | Tucson | AZ | 13 | Residential | Rooftop Contractor | 6,542.0 | 0.5 |
| 19 | Energy Solution Providers | 405 | Florence | AZ | 11 | Residential | Rooftop Contractor | 5.0 | 0.5 |
| 20 | Custom Solar and Leisure | 412 | Tucson | AZ | 9 | Residential | Rooftop Contractor | 3.0 | 0.4 |
| 21 | Cool Blew Solar & Electric | 416 | Peoria | AZ | 49 | Residential | Rooftop Contractor | 5,244.0 | 0.4 |