| C4 Energy Storage LLC | EC | Active |
| Campos Family Electric | EC | Active |
| Cantu Electrical Services LLC | EC | Active |
| Cappadonna Electrical Contractors Inc | EC | Active |
| Carrasco Electric | EC | Active |
| Casanova Electric Corp | EC | Active |
| Cavazos Electric | EC | Active |
| Cbre GWS Licentia LLC | EC | Active |
| CCC Group, Inc | EC | Active |
| Cdam Electric, LLC | EC | Renew by Nov 17, 2026 |
| Central Electric Ent & Co | EC | Active |
| Central Texas Solar LLC | EC | Active |
| Centre Pointe Electric | EC | Active |
| Cfa Electric LLC | EC | Active |
| City Public Service | EC | Active |
| City Wide Electric, LLC | EC | Active |
| Classic Electric Co | EC | Active |
| Cobra Electric | EC | Active |
| Commercial Heights Electric Inc | EC | Active |
| Competence Electric LLC | EC | Active |
| Cool Component HTG & AC Inc | EC | Active |
| Copperhead Electric LLC | EC | Active |
| Copperhead Electrical Solutions LLC | EC | Active |
| Core Measurement Automation Controls LLC | EC | Active |
| Countdown Electrical Services LLC | EC | Active |
| Cri Electric, Inc | EC | Renew by Nov 15, 2026 |
| Crossroad Energy Solutions Inc | EC | Active |
| CSW (Power Solutions) | EC | Active |
| CT Electrical Services | EC | Active |
| Current Connections Electrical | EC | Active |
| Current Power Group LLC | EC | Active |
| Current Power Technologies Inc | EC | Active |
| Cypher Electric LLC | EC | Active |
| D & R Service | EC | Renew by Dec 9, 2026 |
| D&H United Fueling Solutions, Inc. | EC | Active |
| D.D. Services | EC | Active |
| D7 Power, LLC | EC | Renew by Dec 15, 2026 |
| Dausin Electric Co | EC | Active |
| David Electric LLC | EC | Active |
| David Garcia Electrical Contractor | EC | Active |
| David T Hernandez Electric | EC | Active |
| Davila Electric Co, Inc | EC | Active |
| Davis Electric | EC | Active |
| De La Rosa Electric, LLC | EC | Active |
| Dela Electric | EC | Active |
| Deleon Gonzalez Electrical Solutions | EC | Active |
| Denali Electric LLC | EC | Active |
| Dewinne Electric | EC | Active |
| Dieco Energy | EC | Renew by Dec 30, 2026 |
| Dieco Energy Solar And Electrical | EC | Active |
| Disciple Electric | EC | Active |
| DMG Electric LLC | EC | Renew by Dec 6, 2026 |
| DNG Construction | EC | Active |
| Doctor Electric | EC | Active |
| Done Right Electric LTD | EC | Active |
| Drury Construction Company, LLC | EC | Active |
| Duck Electric LLC | EC | Active |
| Dunn Honest Electric | EC | Active |
| DV Electric | EC | Renew by Dec 21, 2026 |
| E & S Electric Company | EC | Active |
| E&D Electrical Contractor LLC | EC | Active |
| Earth Smart Solar, LLC | EC | Active |
| Eb Extreme Electrical Services | EC | Active |
| Ec Ramtek Electric L.L.C | EC | Renew by Nov 29, 2026 |
| Eci Electric | EC | Active |
| Edlen Electrical Exhibition Services | EC | Active |
| Ehh Electrical Services LLC | EC | Active |
| El&S Electric | EC | Active |
| Electric Facility Maintenance LLC | EC | Active |
| Electric Integrations LLC | EC | Renew by Nov 6, 2026 |
| Electric Samurai LLC | EC | Active |
| Electric Source LLC | EC | Active |
| Electric Unlimited | EC | Active |
| Electrical Auxilium LLC | EC | Active |
| Electrical By Kr, LLC | EC | Active |
| Electrical Contracting Services | EC | Renew by Dec 2, 2026 |
| Electrical Employee Contracting LLC | EC | Renew by Dec 18, 2026 |
| Electrical Power Solution | EC | Renew by Dec 8, 2026 |
| Electrical Pros Of Texas LLC | EC | Active |
| Elevate Electrical Solutions | EC | Active |
| Elite Electrical Contractors | EC | Active |
| Elmer's Home Services LLC | EC | Active |
| Emo's Electric | EC | Active |
| Empire Elite Electric LLC | EC | Active |
| Empowered Electrical Contractors LLC | EC | Active |
| Energiz.D Electric | EC | Active |
| Energon Electric LLC | EC | Active |
| Engel Electric / Engel Contracting | EC | Active |
| English Electric | EC | Renew by Nov 30, 2026 |
| Espinosa Electric LLC | EC | Active |
| Esquivel Electrical & Lighting LLC | EC | Active |
| Evenflow Home & Commercial Services, LLC | EC | Active |
| Evergreen Development Investment LLC | EC | Renew by Dec 1, 2026 |
| Evolution Electrical | EC | Renew by Nov 21, 2026 |
| Excel Electric, Co. | EC | Renew by Nov 12, 2026 |
| F&S Electric, LLC | EC | Active |
| Farco Mechanical Co | EC | Active |
| FC Electric | EC | Active |
| Fidelis Electrical Services LLC | EC | Active |
| Finlee Electric | EC | Active |