| Beme Electrical Services Inc | EC | Renew by Dec 13, 2026 |
| Benjamin Electrical Services LLC | EC | Active |
| Bespoke Electric | EC | Active |
| Bg-One Electric | EC | Active |
| Bias Electrical, LLC | EC | Active |
| Big Ant Electrical LLC | EC | Active |
| Blanco Electric Ltd. Co. | EC | Active |
| Blue Bison Electrical Services LLC | EC | Active |
| Blue Ion Electric LLC | EC | Active |
| Blue Jay Electrical Services | EC | Active |
| Blue Tek Services US | EC | Renew by Dec 4, 2026 |
| Bmi Electrical Contractors Inc | EC | Active |
| Bonte Electrical LLC | EC | Active |
| Boyer, Inc | EC | Active |
| Bradford Brothers | EC | Active |
| Braeden Engineering And Consulting LLC | EC | Active |
| Bravenec Electric | EC | Active |
| Brazos Bolt LLC | EC | Active |
| Bright Empire Electric | EC | Renew by Dec 4, 2026 |
| Bright Vision Electrical LLC | EC | Active |
| Brightbuild Electric LLC | EC | Active |
| Brighter Electrical Services, LLC | EC | Active |
| Brighter Lights Electric | EC | Active |
| Brilliance Elect Designs & Solutions LLC | EC | Active |
| Britain Electric Co | EC | Active |
| Bros Cao Electric LLC | EC | Active |
| Buddys Total Electric LLC | EC | Active |
| Burns Electric Inc | EC | Active |
| C & A Electric Co. LLC | EC | Active |
| C & A Electric LLC | EC | Active |
| C & W Electrical Services | EC | Active |
| C And E Services | EC | Active |
| C F McDonald Electric Inc | EC | Active |
| C Three Electrical Contractors LLC | EC | Active |
| C To The Power Of 4 Electric LLC | EC | Active |
| C W Henderson Electric Inc | EC | Active |
| C-E Electric, LLC | EC | Active |
| C2 Electric LLC | EC | Active |
| Ca Contractor LLC | EC | Renew by Dec 13, 2026 |
| Cable & Electrical Systems Inc | EC | Active |
| Caliber Electric | EC | Active |
| Cam Plant Services LLC | EC | Active |
| Camarillo Electrical Contractors | EC | Active |
| Camden Electric, LLC | EC | Active |
| Cameron Builders Inc | EC | Active |
| Capable Electric LLC | EC | Active |
| Capital Care Electric | EC | Active |
| Capp Electric Co Inc | EC | Active |
| Caprock Electric | EC | Active |
| Carvb Electrical Solutions LLC | EC | Active |
| CDC Electric LLC | EC | Active |
| Centeno LLC | EC | Active |
| Center Enterprises, Inc | EC | Active |
| Centerline Underground Services LLC | EC | Renew by Dec 19, 2026 |
| Ces Powerplus LLC | EC | Active |
| CH Integrated Services LLC | EC | Active |
| Champions Electric Inc | EC | Active |
| Charles Electric | EC | Active |
| Charlie's Electric LLC | EC | Active |
| Chemelex LLC | EC | Active |
| Circuit And Breakers Electric | EC | Active |
| City Of Houston General Services | EC | Active |
| CJR Electric LLC | EC | Active |
| CJR Renewables Inc | EC | Active |
| Claros Electric, LLC | EC | Active |
| Clay Branch Inc DBA Great Texas LED | EC | Active |
| CLB Electrical Systems | EC | Active |
| Cme Power Solutions | EC | Active |
| CMR Electric Inc | EC | Active |
| CMS Electrical Solutions LLC | EC | Active |
| CNG Electrical Services | EC | Active |
| CNL Electric | EC | Active |
| Coalwood Electric I Limited Partnership | EC | Active |
| Coastal Electric | EC | Active |
| Coastline Electric Company Inc | EC | Active |
| Collinsworth Day Enterprises LLC | EC | Active |
| Colwell Electric | EC | Active |
| Comptech Buildings LLC | EC | Renew by Nov 28, 2026 |
| Coolsys Commercial & Ind Solutions Inc | EC | Active |
| Coonrod Electric Company, LLC | EC | Active |
| Copperfield Electric Services LLC | EC | Active |
| Corea's Electrical Services | EC | Active |
| Correct Electric Inc | EC | Renew by Dec 15, 2026 |
| Country Line Electric Co | EC | Renew by Nov 30, 2026 |
| Courtesy Electric Inc | EC | Active |
| Cravens Electric | EC | Active |
| Creatum Solar LLC | EC | Active |
| Creech Electric | EC | Active |
| Croman Electric | EC | Active |
| Crossfire Electrical LLC | EC | Active |
| CS Mechanical | EC | Active |
| Cto Electric LLC | EC | Active |
| Current Electric | EC | Active |
| Curtis Electrical Solutions | EC | Active |
| Custom Lighting Designs LLC | EC | Active |
| Cyberwolf Energy LLC | EC | Renew by Dec 19, 2026 |
| D & J Electric LLC | EC | Renew by Dec 5, 2026 |
| D & L Electric Company, Inc | EC | Active |
| D N D Electric | EC | Active |
| D W Joseph Electric Company | EC | Active |