| Image Electric | EC | Active |
| Imd Electrical Services | EC | Active |
| Imperio Solution I & E Tech LLC | EC | Active |
| Independence Testing Services | EC | Active |
| Industrial Electrical Services Inc | EC | Active |
| Industrious Energy Solutions, LLC | EC | Active |
| Infinite Power Electrical Services | EC | Active |
| Infinite Source Power, LLC | EC | Renew by Dec 16, 2026 |
| Innerloop Electric LLC | EC | Active |
| Innovative Electrical Services LLC | EC | Active |
| Inphaze Electric | EC | Active |
| Integra Electric And Construction | EC | Active |
| Integratesun, LLC | EC | Active |
| Integrity Electrical Solutions LLC | EC | Active |
| Intensity Electrical Contractors LLC | EC | Active |
| J & B Electric Inc | EC | Active |
| J & L Electric Services LLC | EC | Active |
| J E P Electric LLC | EC | Renew by Dec 3, 2026 |
| J Electric Co | EC | Active |
| J L Wood Electric Co , Inc | EC | Active |
| J T Lanehart Electric | EC | Active |
| J&D Electrical Services LLC | EC | Active |
| J&E Electric LLC | EC | Active |
| J&F Electrical Contractor LLC | EC | Active |
| J.E.D. Electrical Contractors Corp. | EC | Active |
| Jabez Electrical Company LLC | EC | Renew by Dec 18, 2026 |
| Jamail & Smith Construction LP | EC | Active |
| Jamco Electrical | EC | Active |
| Jan Electrical Contractors, Inc. | EC | Active |
| Jay Electrical | EC | Active |
| Jazq Electric Co | EC | Active |
| Jbac Electric | EC | Active |
| JCM Electrical Services LLC | EC | Active |
| Jda Electric Corporation | EC | Active |
| JDL Electrical Contractors LLC | EC | Active |
| Jebco, Inc | EC | Active |
| Jecs Electric LLC | EC | Active |
| Jeff Electric LLC | EC | Active |
| Jet Electric LLC | EC | Active |
| JM Dunn Electric Inc | EC | Active |
| Jmi Electrical | EC | Active |
| JN Electric | EC | Active |
| JN Electric Services LLC | EC | Active |
| Jna Electric LLC | EC | Active |
| JNL Electric | EC | Renew by Nov 30, 2026 |
| Joe Swartz Electric Co., LTD | EC | Active |
| John Kuenstle Electric LLC | EC | Active |
| John Moore LLC | EC | Renew by Dec 19, 2026 |
| Jomar Contractors Incorporated | EC | Active |
| Jonmar Electric Inc | EC | Active |
| Jordan Electric Group | EC | Active |
| JP Electrical Services | EC | Renew by Nov 30, 2026 |
| Jr Illuminations Investment Group | EC | Renew by Dec 10, 2026 |
| JRM Electrical Services LLC | EC | Active |
| JS Electrical Services | EC | Active |
| JSJ Electric Just Power | EC | Active |
| Just Grounded LLC | EC | Active |
| K.C. Technology Solutions LLC | EC | Active |
| Kaiser Power LLC | EC | Active |
| Kano Electric LLC | EC | Active |
| Kast Electrical Services | EC | Active |
| Kdel Electrical Services | EC | Renew by Dec 3, 2026 |
| Kenmor Electric Company, L P | EC | Active |
| Kes Inc | EC | Active |
| Kevin Heine Electrical Services | EC | Active |
| Kide International (The States) LLC | EC | Active |
| Kilgore Industries LP | EC | Active |
| Kinergy Power Solutions LLC | EC | Active |
| King Electric | EC | Active |
| Kings Electrical Services, LLC | EC | Active |
| Kirkwood & Hunter Associates, LLC | EC | Active |
| Knight Industries LLC | EC | Active |
| Koenig Industrial Supply Services Inc | EC | Active |
| KT Electric LLC | EC | Active |
| L H Electric | EC | Active |
| L&E Electrical Services | EC | Active |
| L.A.N Residential Electrical Serv Corp | EC | Active |
| Lakey Electric Co Inc | EC | Active |
| Landmark Electric | EC | Active |
| LCG Electrical Services | EC | Active |
| Lecs LTD | EC | Active |
| Lesar Electric & Design | EC | Active |
| Lexem Electrical LLC | EC | Active |
| Lge Services Inc | EC | Active |
| LHS Electrical Solutions LLC | EC | Active |
| Liberty Builders LLC | EC | Active |
| Liberty Electrical | EC | Active |
| Liberty Lift Solutions, LLC | EC | Active |
| Light Electric Service Company | EC | Active |
| Light Of The World Electric LLC | EC | Active |
| Light-Tech Inc | EC | Active |
| Lightnin Rods Electrical Service | EC | Active |
| Linc Electric, Inc. | EC | Active |
| Lindsey Electric L P | EC | Active |
| Line Star E&I, LLC | EC | Active |
| Lions Electric LLC | EC | Renew by Nov 21, 2026 |
| Lit Electrical, LLC | EC | Active |
| Llanos Electric Co | EC | Active |
| Lmdi Electric LLC | EC | Active |
| LMT Electric LLC | EC | Active |