| Electrical Solutions Of Oklahoma, Inc. | Del City | OK | $0 |
| Electrical Specialists, Inc. | Marion | IL | $0 |
| Electrical Specialties, Inc. | Beaumont | TX | $0 |
| Electrical Test Tech LLC | Lanham | MD | Subcontractor |
| Electric Construction Co. | Sioux Falls | SD | Subcontractor |
| Electrico, Inc. | Baltimore | MD | Subcontractor |
| Electric One, Inc. | Crestwood | IL | $0 |
| Electric Plus Inc. | Avon | IN | Subcontractor |
| Electricraft, Inc. | San Luis Obispo | CA | Subcontractor |
| Electric Supply Co. | Sioux Falls | SD | $0 |
| Electro Communications Co. | Mountlake Terrace | WA | $0 |
| Electronic Communications, Inc. | Birmingham | AL | $0 |
| Electronic Homescaping Inc. | Brandon | MS | $0 |
| Electronic Systems & Design, Inc. | Albany | GA | Subcontractor |
| Electronic & Telecom Systems, Inc. | San Diego | CA | Subcontractor |
| Electro Tech Corp. | Ogden | UT | Subcontractor |
| Elektra Electric Service Inc. | Luquillo | PR | $0 |
| E Light Electric Services Inc. | Englewood | CO | Subcontractor |
| Elite Electrical Contractors Inc. | Bellingham | WA | Subcontractor |
| Elite Microwave Solutions Corporation | Queen Creek | AZ | Subcontractor |
| Elite Service Solutions, LLC | Lexington | KY | Subcontractor |
| Elite Solutions, Inc. | San Angelo | TX | Subcontractor |
| Elm Electrical Inc. | Westfield | MA | $0 |
| Eltec Green Energy GMBH | Berlin | | Subcontractor |
| Emb Electrical Inc. | Tamuning | GU | Subcontractor |
| Emcor International General Trading Company | Kuwait City | | Subcontractor |
| Emerald Standard Services Inc. | Pasadena | TX | $0 |
| Emp Defense LLC | Newport | MI | Subcontractor |
| Empowering Technology Assistance LLC | Grants Pass | OR | $0 |
| Encore Broadcast Equipment Sales Inc. | Tampa | FL | $0 |
| Ene Electric Inc. | Winslow | AZ | $0 |
| Enerconn Electrical Solutions Inc. | Poulsbo | WA | Subcontractor |
| Energy Electric LLC | Ridgefield | WA | Subcontractor |
| Energy Management Consulting & Construction, LLC | Honolulu | HI | Subcontractor |
| Engineered Controls Inc. | Omaha | NE | Subcontractor |
| Engineered Security & Sound, Inc. | West Chicago | IL | Subcontractor |
| Enhanced Telecommunications & Data, Inc. | Boise | ID | $0 |
| Ennis Electric Company, Inc. | Manassas | VA | Subcontractor |
| Enterprise Electric Inc.Lisbon Falls, ME · UEI LJJCU4BECMM4 | Lisbon Falls | ME | $0 |
| Enterprise Electric Inc.Valley City, ND · UEI S9KHVVLLNTZ9 | Valley City | ND | $0 |
| Envision Systems Group, LLC | West Monroe | LA | $0 |
| Envision Technology Group LLC | Overland Park | KS | $0 |
| Eoh Enterprises LLC | Honolulu | HI | $0 |
| Ep Techworks LLC | El Paso | TX | $0 |
| Erm Electric, LLC | High Rolls Mountain Park | NM | Subcontractor |
| Escon Group, Inc. | Bay City | MI | $0 |
| E & S Electric Co. LLC | Underhill | VT | $0 |
| Est Electrical Contractors & Engineers Corp. | Coto Laurel | PR | $0 |
| Ethos Electrical Solutions, LLC | Pensacola | FL | Subcontractor |
| Ever Electric, Inc. | Juneau | AK | Subcontractor |
| Evergreen Energy Services LLC | Silverton | OR | Subcontractor |
| Evergreen Technologies, Inc. | Seattle | WA | Subcontractor |
| Everon Electrical Contractors, Inc. | Moosic | PA | $0 |
| Evolutions Electric, LLC | Lake Villa | IL | Subcontractor |
| E W Audet & Sons Inc. | Providence | RI | Subcontractor |
| E & W Electrical Solutions, LLC | Paris | TN | $0 |
| Excel Communications Worldwide Inc. | Harleysville | PA | Subcontractor |
| Expo Technologies, LLC | Pontiac | MI | Subcontractor |
| Extreme Audio And Video, Inc. | Hamilton | OH | $0 |
| Ezequiel Electric, Inc. | Yucaipa | CA | Subcontractor |
| Facility Automation Inc. | Baton Rouge | LA | $0 |
| Facility Solutions Group Inc. | Corpus Christi | TX | $0 |
| Facility Solutions Group, Inc.Denver, CO · UEI CA1NKMDWG8A5 | Denver | CO | $0 |
| Facility Solutions Group, Inc.Dallas, TX · UEI HWRHUYP54NZ6 | Dallas | TX | Subcontractor |
| Facility Solutions Group, Inc.Shawnee, KS · UEI MMUHF1W7APG1 | Shawnee | KS | $0 |
| Facility Solutions Group, Inc.Houston, TX · UEI V499AHTA9ZF7 | Houston | TX | $0 |
| Facility Solutions Group, Inc.Austin, TX · UEI Y4NFVWJNAM25 | Austin | TX | $0 |
| Fairchild Communication Systems, Inc. | Indianapolis | IN | $0 |
| Faith Technologies, Inc. | Menasha | WI | Subcontractor |
| Falcon Data Networks, LLC | Pleasant Valley | NY | $0 |
| Fall River Electrical Associates Company, Inc. | Swansea | MA | $0 |
| Falls Electric, Inc. | Thief River Falls | MN | $0 |
| F.d. Hayes Electric Company | Lansing | MI | $0 |
| Ferguson Electric, Inc. | Buffalo | NY | $0 |
| Ferndale Electric Company, Inc. | Madison Heights | MI | Subcontractor |
| Fibertech Communications, Inc. | Harrisburg | PA | Subcontractor |
| Fibre Optic Plus, LLC | South Windsor | CT | $0 |
| Ficek Electric & Communication Systems Inc. | La Salle | IL | $0 |
| Fields James E | Cleveland | TN | Subcontractor |
| Fire Alarm Control Systems, Inc. | San Antonio | TX | Subcontractor |
| Firehawk Safety Systems Inc. | Amarillo | TX | $0 |
| Fire Mountain Solar, LLC | Mount Vernon | WA | $0 |
| Fire Safe Protection Services, LP | Houston | TX | $0 |
| Fire Tech Systems Inc. | Shreveport | LA | Subcontractor |
| First Electric Company | Boring | OR | Subcontractor |
| Five 9'S Communications Inc. | Ogden | UT | $0 |
| Five Star Electric Corp. | Ozone Park | NY | $0 |
| Fleming Electric, Inc. | Bryant | AR | Subcontractor |
| Fleming Network & Security Services, Inc. | Bryant | AR | $0 |
| Flores Power & Communication LLC | Spring Valley | CA | Subcontractor |
| F. M. Young Company Inc. | Fairfax | SC | $0 |
| Force Electric Service Inc. | Wayne | NJ | $0 |
| Fort Worth Electric LP | Fort Worth | TX | $0 |
| Frequency Audio Services, Inc. | Elk Grove Village | IL | $0 |
| Frischhertz Electric Company, Inc. | New Orleans | LA | Subcontractor |
| Frontier Electric, Inc.Bismarck, ND · UEI NJ21WM6PBR55 | Bismarck | ND | $0 |
| Frontier Electric, Inc.Peachtree City, GA · UEI NUYMSHGJL8N7 | Peachtree City | GA | $0 |
| Fuel Tech Electric, LLC | Springfield | OR | Subcontractor |
| Fuji Techno Co. Ltd. | Iwakuni-shi | | $0 |
| Fuse Electric, LLC | Hayden | ID | $0 |
