| Qcomm Network Services | Colorado Springs | CO | Subcontractor |
| QLVS, Inc. | Amarillo | TX | $0 |
| Quality Communications Inc.Grayson, GA · UEI L6TUXJEKL4S3 | Grayson | GA | $0 |
| Quality Communications Inc.Boise, ID · UEI YJTTWVBM6KH9 | Boise | ID | $0 |
| Quality Electric, Inc. | Boise | ID | Subcontractor |
| Quenzer Electric, Inc. | Mobridge | SD | $0 |
| Quest Contracting & Engineering LLC | Macon | GA | $0 |
| R2 Communications Group Corp. | Toa Baja | PR | $0 |
| Ral-bar Electric, Inc. | Long Island City | NY | $0 |
| Randall Electrical Contractors Inc. | Titusville | FL | Subcontractor |
| Randall Electric, Inc. | Baldwin City | KS | $0 |
| Rand, LLC | Colchester | CT | Subcontractor |
| Rasr LLC | North Pole | AK | Subcontractor |
| Rathje Enterprises Inc. | Decatur | IL | $0 |
| Rc Electrical Engineering, Corp. | Carolina | PR | $0 |
| R.c. Hunt Electric, Inc. | West Valley City | UT | Subcontractor |
| RCR Electrical Contractors Inc. | Palmyra | NJ | $0 |
| RDC Tech Services Inc. | Summerville | SC | Subcontractor |
| Ready Electric Co. Inc. | Louisville | KY | $0 |
| Rebel Sound Systems, Inc. | Long Beach | MS | Subcontractor |
| R.e.d. Electric, Inc. | Ridgecrest | CA | Subcontractor |
| Red Mesa Electric Enterprises LLC | Gallup | NM | $0 |
| Redpoint Enterprises Inc. | Bremerton | WA | Subcontractor |
| Redwing Electric, Inc. | Trinidad | CO | $0 |
| Reedco LLC | Phoenix | AZ | $0 |
| Reid Sound Inc. | Windsor | NJ | $0 |
| Reinhold Electric Inc. | Saint Louis | MO | Subcontractor |
| Rentz Communications Inc. | Baxley | GA | Subcontractor |
| Retro-tech Systems LLC | Gambrills | MD | Subcontractor |
| Revere Control Systems, Inc. | Hoover | AL | $0 |
| Revive Electrical Contracting LLC | Duncannon | PA | Subcontractor |
| Reyes Electric, L.L.C. | Altus | OK | Subcontractor |
| RFS Technologies, Inc. | Meriden | CT | Subcontractor |
| RGT Services LLC | Oakwood Village | OH | Subcontractor |
| R & H Electric Inc. | Montgomery | AL | $0 |
| Richard A. Howerton, Inc. | Jefferson City | MO | $0 |
| Richard Electric, Inc. | Wilder | VT | $0 |
| Richard R Sandau II | Granite Bay | CA | $0 |
| Rickard Electric Inc. | Fargo | ND | $0 |
| Right Choice Electric Inc. | Grand Forks | ND | Subcontractor |
| Right Electric Inc. | Butler | PA | $0 |
| Riverbridge, LLC | N Manchester | IN | $0 |
| River Cities Engineering Inc. | Davenport | IA | $0 |
| River City Communications LLC | Shreveport | LA | $0 |
| Rk Electrical LLC | Denver | CO | Subcontractor |
| Robbins Electric Inc. | Creswell | OR | $0 |
| Robco Electric, Inc. | Las Vegas | NV | $0 |
| Robert Colburn Electric, Inc. | Eureka | CA | $0 |
| Robert F Audet Inc. | East Greenwich | RI | Subcontractor |
| Robert H Burnett | Knoxville | TN | $0 |
| Robert Kelley Electric, LLC | Newport Center | VT | $0 |
| Robert Rhoades Inc. | Enterprise | AL | Subcontractor |
| Robles Communications Inc. | San Leandro | CA | $0 |
| Robles Electric Solutions LLC | Tucson | AZ | Subcontractor |
| Rock Electric, Inc. | San Diego | CA | Subcontractor |
| Rock's Electric Construction, Inc. | Grafton | ND | $0 |
| Rocky Mountain Electric, Inc. | Bozeman | MT | $0 |
| Rocky Mountain Empire Electric, Inc. | Centennial | CO | $0 |
| Rogers Electrical Contractors, Inc. | Pensacola | FL | Subcontractor |
| Roman Electric Co. Inc. | Milwaukee | WI | $0 |
| Roman Electric Contractors Inc. | Catano | PR | $0 |
| Romanoff Electric Co. LLC | Toledo | OH | $0 |
| Ron's Electric, Inc. | Westbrook | MN | $0 |
| Ross-brandt Electric Inc. | Hermiston | OR | $0 |
| Ross Electric And Generators LLC | Ferndale | NY | Subcontractor |
| Rossi & Carr Electrical, Inc. | Paso Robles | CA | Subcontractor |
| Rossi Electric Company, LLC | Cranston | RI | Subcontractor |
| Rp Electric Inc. | Perris | CA | Subcontractor |
| Rpi Electrical Solutions LLC | Laredo | TX | Subcontractor |
| RPL Electric, Inc. | Alpine | CA | Subcontractor |
| Rs Electric Corp. | Saint Joseph | MO | $0 |
| RSL Electric LLC | York | PA | Subcontractor |
| R. T. Casey, LLC | Belle Chasse | LA | $0 |
| Rucco LLC | Mayaguez | PR | $0 |
| Rudy L. Hawkins, Electrical Contractor, Inc. | Chester | VA | Subcontractor |
| Rutland Low Voltage Systems, Inc. | Valdosta | GA | $0 |
| R. Wagner, Incorporated | Redding | CA | $0 |
| Sacramento Cooling Systems, Inc. | Rocklin | CA | $0 |
| Sadler Electric Inc. | Omaha | NE | Subcontractor |
| Safeguard System Inc. | Corpus Christi | TX | $0 |
| Safe-tech Inc. | Glenwood | NJ | $0 |
| Safety Counts Inc. | Richmond | TX | $0 |
| Samm Enterprises Inc. | Laurel Hill | FL | Subcontractor |
| Sand Electric, Inc. | Glasgow | MT | $0 |
| Sanders Brothers Electric, Inc. | Pensacola | FL | Subcontractor |
| San Fernando Valley Alarm, Inc. | San Fernando | CA | $0 |
| Santa Clarita Electrical Inc. | Valencia | CA | Subcontractor |
| Santa Maria Electric, Inc. | Santa Maria | CA | Subcontractor |
| Saratoga Craftsmen, Incorporated | Poulsbo | WA | Subcontractor |
| Sas Electrical Services Inc. | Herndon | VA | $0 |
| Satellite City Inc. | Orlando | FL | Subcontractor |
| Sat Energy Inc. | San Antonio | TX | $0 |
| Saturn Electric Inc. | Dayton | OH | Subcontractor |
| Savage Technical Services LLC | Washington | DC | Subcontractor |
| Scanlon Fiber Optics LLC | Bethel Park | PA | $0 |
| Scarborough & Associates Inc. | Dothan | AL | Subcontractor |
| S & C Contracting, LLC | Virginia Beach | VA | $0 |
| Schetter Electric Incorporated | Sacramento | CA | $0 |
| Schindlers Cable Tv | Belcourt | ND | $0 |
| Schine Inc. | Havre | MT | Subcontractor |
