| 24/6 Technical Services | EC | Active |
| 3 Guys Electrical & Insulation | EC | Active |
| 3-md Electric LLC | EC | Active |
| 3g Controls Inc | EC | Active |
| 3m Electric LLC | EC | Active |
| 3p Electric | EC | Active |
| 4eighty Electric LLC | EC | Active |
| A & A Electrical Services | EC | Active |
| A & J Electrical | EC | Renew by Dec 2, 2026 |
| A & J Electrical Services | EC | Active |
| A & K Associates | EC | Renew by Nov 22, 2026 |
| A Better Price Electric Company | EC | Active |
| A Positive Services LLC | EC | Active |
| A Renewable Electric LLC | EC | Active |
| A&A Genpro LLC | EC | Active |
| A&P Electric | EC | Active |
| A-1 Plus Electrical | EC | Active |
| A-D Electric | EC | Active |
| A1 Electrical Construction & Service LLC | EC | Active |
| Aa Electric & Construction LLC | EC | Active |
| Aarm Electrical & Controls, LLC | EC | Active |
| Aaron Carter Electric Inc | EC | Active |
| Abacus Plumbing, Ac, And Electrical | EC | Renew by Dec 28, 2026 |
| Abel Electric LLC | EC | Active |
| Abm Building Services LLC | EC | Active |
| Above Electric/Above Enterprises LLC | EC | Active |
| Absolute Testing Services, Inc | EC | Active |
| Acce Electric LLC | EC | Active |
| Access Electrical Aes | EC | Active |
| Accutek Technologies, Inc. | EC | Active |
| Acdc Electric, Inc | EC | Active |
| Acgv Electric LLC | EC | Active |
| Acs Commercial Services LLC | EC | Active |
| Action Electrical Services Inc | EC | Active |
| Acuity Electric, Inc | EC | Active |
| Admiral Commercial Electric LLC | EC | Active |
| Advanced Calculations LLC | EC | Active |
| Advantage Electric, Inc | EC | Active |
| Aecon Industrial Construction Corp | EC | Renew by Nov 13, 2026 |
| Aecon Industrial Construction Corp | EC | Renew by Dec 9, 2026 |
| Airborne Electrical Services Inc | EC | Active |
| Aj Technical Services LLC | EC | Active |
| Akl Engineering Inc | EC | Active |
| Alanis Electric Inc | EC | Active |
| Alejo Electric LLC | EC | Active |
| Alexander Brothers Electric LLC | EC | Active |
| All Lighting Electric | EC | Active |
| All Phase Electrical Services LLC | EC | Active |
| All Star A/C & Heating Services | EC | Active |
| Alliance Contractors And Engineers Inc | EC | Active |
| Allied Electrcl Contrctrs Of Houston Inc | EC | Active |
| Almighty Electric LLC | EC | Active |
| Amber Electric | EC | Active |
| Amen HVAC & Electrical | EC | Active |
| American Contract Excavation Services | EC | Active |
| American Electric Contractor | EC | Active |
| American Residential Services | EC | Active |
| Americas Best Electric | EC | Active |
| Amir Electric LLC | EC | Active |
| Amps2watts Electrical LLC | EC | Active |
| Anchor Security Specialists Inc | EC | Active |
| Andrew Jordan Industrial LLC | EC | Active |
| Angel Aaa Electric LLC | EC | Active |
| Antwine Electric | EC | Active |
| Anv Electric | EC | Active |
| Anytime Electric LLC | EC | Renew by Dec 8, 2026 |
| Apache Sign And Service Inc | EC | Renew by Dec 18, 2026 |
| Apex Electricalservices, LLC | EC | Active |
| Apollo Electric TXS LLC | EC | Active |
| Araguz Electrical Service | EC | Renew by Nov 24, 2026 |
| Archrock Services LP | EC | Active |
| Arcon Electric LLC | EC | Active |
| Ariel Electric LLC | EC | Active |
| Arm Electric LLC | EC | Active |
| Armenta Contractors | EC | Active |
| Armortex Electrical Solutions LLC | EC | Active |
| Art & Son Electric | EC | Active |
| Art's Electrical Services | EC | Active |
| Audubon Companies LLC | EC | Active |
| Automation Nation Inc | EC | Active |
| Av4 Electric | EC | Active |
| Avella Electric LLC | EC | Active |
| Awake Solar LLC | EC | Active |
| Awl Electric, Inc | EC | Active |
| Azota Gas Processing LTD | EC | Active |
| Azteca Electrical Services | EC | Renew by Dec 1, 2026 |
| B4 Electrical Services LLC | EC | Active |
| Bab Electrical Services | EC | Active |
| Backup Electric | EC | Active |
| Baez Electrical Services | EC | Active |
| Bakenhus Electric Co Inc | EC | Active |
| Balanced Electric LLC | EC | Active |
| Barajas Electric Company LLC | EC | Active |
| Bayou City Electrical Inc | EC | Renew by Nov 25, 2026 |
| Bayou Technical Services, LP | EC | Active |
| BDS Electric | EC | Active |
| Bear Bone Electric | EC | Active |
| Beau Pope Electric LLC | EC | Active |
| Bell Mountain Construction LLC | EC | Active |
| Bellow Electric, LLC | EC | Active |