| Heimdall Fire And Safety, LLC | Leavenworth | WA | Subcontractor |
| Heise Electric Inc. | Spokane | WA | $0 |
| Helix Electric, LLC | Las Vegas | NV | Subcontractor |
| Hell Creek Electric Inc. | Jordan | MT | $0 |
| Heller Electric Company, Inc. | Brandywine | MD | $0 |
| Helton Patrick | Shelbyville | IL | $0 |
| Henderson Electric Of NWF, LLC | Fort Walton Beach | FL | Subcontractor |
| Henderson Services LLC | Louisville | KY | $0 |
| Henry Farm Center Inc. | Abbeville | AL | $0 |
| Hewitt Young Electric, LLC | Rochester | NY | Subcontractor |
| Hexel Works, Inc. | Minato-ku | | Subcontractor |
| H & H Electric Co. Inc. | Chunchula | AL | $0 |
| H & H Electric Inc. | Hot Springs National Park | AR | $0 |
| H&H Electric, Inc. | Littleton | CO | Subcontractor |
| Higgins Electric, Inc. Of Dothan | Dothan | AL | $0 |
| Highlights Of Houston, Inc. | Houston | TX | $0 |
| High Point Electric Inc. | Wantage | NJ | Subcontractor |
| Highway Electrical Solutions, LLC | Butler | PA | Subcontractor |
| Hiller Electric Company | Omaha | NE | $0 |
| Hill's Wiring, Inc. | Baraboo | WI | $0 |
| Hi-tech Electric Company | Portage | MI | Subcontractor |
| Hi-tech Electric Inc. | Houston | TX | Subcontractor |
| Hi-tech Electronics Limited | Blantyre | | $0 |
| Hitt Electric Corporation | Virginia Beach | VA | Subcontractor |
| H & L Electric Inc. | Long Island City | NY | $0 |
| H.l. Pruitt Corp. | Winter Springs | FL | $0 |
| H.L.W. Electric, Inc. | St Leonard | MD | Subcontractor |
| HMC Construction, Inc. | Platte City | MO | Subcontractor |
| H&M Electric & Construction, Inc. | Covington | VA | $0 |
| HMS Construction Inc. | Vista | CA | Subcontractor |
| Hodge Electrical Contractors, Inc. | Piney Flats | TN | $0 |
| Hoefler Communications Inc. | Jamesville | NY | $0 |
| H.o. Feild Electric Co. Inc. | Ashland | VA | $0 |
| Holden Electric Co. Inc. | Baxter | MN | Subcontractor |
| Holland Associates LLC | Cincinnati | OH | $0 |
| Honeywell International, Inc. | Guaynabo | PR | Subcontractor |
| Hopkins Electric Company | Oklahoma City | OK | Subcontractor |
| Hopkins Electric, LLC | Grand Rapids | MN | $0 |
| Horizon Electronics Loss Prevention, Inc. | Port Richey | FL | $0 |
| Horizon Information Services Inc. | Glenshaw | PA | $0 |
| Houston County Electric Cooperative Inc. | Crockett | TX | $0 |
| Howard Brothers Electric Of Charlotte, LLC | Charlotte | NC | Subcontractor |
| Howe Electric Construction, Inc. | Fresno | CA | $0 |
| H.R. Allen, Inc. | North Charleston | SC | Subcontractor |
| H & R Electronic Alarm Systems, Inc. | Cape Girardeau | MO | $0 |
| H.r.i. Electrical Contracting Ltd. | Ebril | | Subcontractor |
| Huckabee, David | Flower Mound | TX | $0 |
| Humeratech, Inc. | Rogers | MN | $0 |
| Hunt Consulting LLC | Laurel | MD | $0 |
| Huston Electric, Inc. | Kokomo | IN | Subcontractor |
| Hutton Electric Company, Inc. | Bristol | TN | $0 |
| Hvac Controls Corporation | Cotati | CA | Subcontractor |
| I2c Technologies Ltd. | North Canton | OH | $0 |
| I-a-electric LLC | Norfolk | VA | Subcontractor |
| Icsdevtek, LLC | Keyser | WV | Subcontractor |
| Ideacom Of Central North Carolina, Inc. | Greensboro | NC | $0 |
| Ies Commercial, Inc. | Tempe | AZ | Subcontractor |
| Iesmart Systems, L.L.C. | Spring | TX | $0 |
| Image Audiovisuals, Inc. | Denver | CO | $0 |
| Imco Engineering & Construction Co. W.L.L | Ahmadi | | Subcontractor |
| Im Solutions, LLC | Melbourne | FL | Subcontractor |
| Industrial Electric Contracting, Inc. | Fairbanks | AK | Subcontractor |
| Industrial Technical Services Inc. | Westfield | MA | Subcontractor |
| Infinite Electric Inc. | Lawrenceville | GA | $0 |
| Infinite Services Contracting Corporation | Cincinnati | OH | $0 |
| Infiniti Technologies, Inc. | Rosedale | MD | $0 |
| Information Systems And Communication Technologies LLC | Amman | | $0 |
| Information Technologies Services, Inc. | Carnegie | PA | Subcontractor |
| Infraservices Group Wireless LLC | Blue Bell | PA | Subcontractor |
| Inland Electric, Inc. | Seaside | OR | Subcontractor |
| Installation Of Digital Transmissions, Inc. | San Rafael | CA | $0 |
| Installation Service Specialists LLC | Pineville | LA | $0 |
| Instrumentation And Control Systems Engineering, Inc. | Ashland | VA | $0 |
| Intec Solutions, Inc. | Livermore | CA | $0 |
| Integrated Controls Environmental LLC | Clifton | NJ | $0 |
| Integrated Network Solutions, Inc. | Savannah | GA | $0 |
| Integrated Security Solutions L.L.C. | Oakdale | CT | $0 |
| Integrated Technologies Corp. | Albuquerque | NM | Subcontractor |
| Integrity Data & Fiber, Inc. | Vacaville | CA | $0 |
| Integrity Networks, Inc. | Renton | WA | Subcontractor |
| Intelect Corporation | Baltimore | MD | $0 |
| Interconnect Inc. | Scottsdale | AZ | $0 |
| Intermountain Electric, Inc. | Aurora | CO | Subcontractor |
| International Systems, Inc. | Lebanon | TN | $0 |
| Interphase Electric Corp. | Lynbrook | NY | Subcontractor |
| Intersect Technology Institute, Inc. | Escondido | CA | Subcontractor |
| Intracommunication Network Systems, Inc. | Tacoma | WA | $0 |
| Island Lighting And Power Systems, Inc. | Norfolk | MA | $0 |
| Jack Antonio | Vanderwagen | NM | $0 |
| James Day Construction, Inc. | Clearlake | CA | Subcontractor |
| Jam Fire Protection Inc. | Monrovia | CA | Subcontractor |
| Jamie Frew | Mount Airy | MD | Subcontractor |
| J And J Electrical And Instrumentation Service, Inc. | Baton Rouge | LA | Subcontractor |
| Jane Warner | Taft | TN | Subcontractor |
| Jansing, Nicholas | Henderson | NV | $0 |
| Jays Electric Inc. | Benton | KY | Subcontractor |
| JBP Security Systems, Inc. | Westbury | NY | $0 |
| Jce, Inc. | Albuquerque | NM | Subcontractor |
| J.c. Electric, Inc. | Providence | RI | $0 |
| Jc Electric LLC | Millbrook | AL | $0 |
