In 2014, for the first time in history, each of the three major U.S. market segments–utility, commercial and residential–installed more than 1 GW of PV, according to SEIA and GTM Research. Utility-scale alone grew by 38% over 2013 to reach nearly 4 GW. These are the Solar Power World Top Solar Contractors in the utility market.
| Rank | Company | Overall Rank | City | State | Employees | Primary Service | Total Megawatts Installed | Total Megawatts 2014 |
|---|---|---|---|---|---|---|---|---|
| 1 | First Solar | 1 | Tempe | AZ | 6060 | Developer | 6,987,846 | 1,023.130 |
| 2 | Mortenson | 2 | Minneapolis | MN | 3810 | EPC | 2,972,700 | 512.920 |
| 3 | Arraycon | 4 | Sacramento | CA | 67 | Construction Firm | 2,487,640 | 449.000 |
| 4 | Helix Electric | 5 | San Diego | CA | 1500 | EPC | 2,381,000 | 411.000 |
| 5 | Signal Energy | 6 | Chattanooga | TN | 115 | EPC | 1,491,927 | 331.000 |
| 6 | Rosendin Electric | 7 | San Jose | CA | 4500 | EPC | 2,200,000 | 319.000 |
| 7 | Swinerton Renewable Energy | 8 | San Francisco | CA | 1729 | EPC | 3,220,510 | 318.000 |
| 8 | Amec Foster Wheeler | 9 | Atlanta | GA | 40000 | EPC | 1,282,600 | 287.000 |
| 9 | Cupertino Electric | 10 | San Jose | CA | 2190 | EPC | 1,254,000 | 280.500 |
| 10 | E Light Electric Services | 12 | Englewood | CO | 945 | Electrical Subcontractor | 1,752,050 | 279.650 |
| 11 | Alternative Energy Development | 13 | Hasbrouck Heights | NJ | 100 | Construction Firm | 1,829,000 | 273.500 |
| 12 | Strata Solar | 14 | Chapel Hill | NC | 176 | EPC | 1,185,000 | 250.000 |
| 13 | CSI Electrical Contractors | 15 | Santa Fe Springs | CA | 700 | Electrical Subcontractor | 1,453,930 | 214.000 |
| 14 | McCarthy Building Cos. | 17 | St. Louis | MO | 1300 | EPC | 1,173,700 | 133.000 |
| 15 | NRG Energy | 18 | Princeton | NJ | 10000 | Developer | 1,489.00 | 112.000 |
| 16 | JE Dunn Construction | 19 | Kansas City | Missouri | 2850 | Construction Firm | 126.000 | 108.000 |
| 17 | RES (Renewable Energy Systems) | 20 | Broomfield | CO | 500 | EPC | 281.00 | 91.000 |
| 18 | M+W Energy | 22 | Union | NJ | 70 | EPC | 847,339 | 69.500 |
| 19 | Moss | 23 | Fort Lauderdale | FL | 430 | Construction Firm | 872,715 | 63.000 |
| 20 | FLS Energy | 24 | Asheville | NC | 60 | Developer | 322.00 | 63.000 |
| 21 | S&C Electric Company | 25 | Chicago | IL | 2500 | EPC | 280,599 | 63.000 |
| 22 | Hanwha Q CELLS USA | 26 | Irvine | CA | 49 | Developer | 181,990 | 58.337 |
| 23 | Quanta Power Generation | 32 | Greenwood Village | Colorado | 703 | EPC | 341.032 | 38.659 |
| 24 | Alpha Energy | 35 | Phoenix | AZ | 2000 | EPC | 500,000 | 35.000 |
| 25 | DKD Electric | 36 | Albuquerque | NM | 120 | Electrical Subcontractor | 382,294 | 32.800 |
| 26 | Riggs Distler | 37 | Cherry Hill | NJ | 1000 | Electrical Subcontractor | 178,407 | 32.000 |
| 27 | CS Energy (formerly Conti Solar) | 38 | Edison | NJ | 750 | EPC | 329,860 | 31.300 |
| 28 | NARENCO | 39 | Charlotte | NC | 22 | Developer | 102.00 | 31.000 |
| 29 | AUI Partners | 40 | Fort Worth | TX | 250 | Construction Firm | 825,000 | 30.000 |
| 30 | Inovateus Solar | 44 | South Bend | IN | 31 | EPC | 359,000 | 25.080 |
| 31 | American Helios Constructors | 51 | Owings Mills | Maryland | 25 | EPC | 60.000 | 21.000 |
| 32 | Watson Electrical Construction | 52 | Wilson | NC | 700 | Electrical Subcontractor | 282,880 | 20.000 |
| 33 | J. Ranck Electric | 61 | Mount Pleasant | MI | 200 | Construction Firm | 205,419 | 14.900 |
| 34 | Newkirk Electric Associates | 64 | Muskegon | MI | 425 | EPC | 113,071 | 13.200 |
| 35 | Carolina Solar Energy | 75 | Durham | NC | 4 | Developer | 264,170 | 10.400 |
| 36 | NOVA Consultants | 78 | Novi | MI | 50 | EPC | 100.00 | 10.000 |
| 37 | System 3 | 81 | Carmichael | California | 250 | Electrical Subcontractor | 17.054 | 9.430 |
| 38 | Efficient Energy of Tennessee | 129 | Knoxville | TN | 20 | EPC | 10.911 | 4.600 |
| 39 | Renewable Energy Massachusetts | 175 | Belmont | MA | 2 | Developer | 32,100 | 2.500 |
| 40 | Vis Solis | 255 | Franklin | TN | 5 | Developer | 13,300 | 1.200 |