| brink constructors, inc. E0376342005-2 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2005 |
| dashiell, corporation E0081822009-8 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2009 |
| grid training corporation E33763742023-8 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2023 |
| H.L. CHAPMAN PIPELINE CONSTRUCTION, INC. C23355-1999 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 1999 |
| IRBY CONSTRUCTION COMPANY C31028-1998 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 1998 |
| mears group, inc. E0483652006-0 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2006 |
| ngi construction, inc. (modified name) C11029-1994 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 1994 |
| north american industrial services, inc. E0522142007-8 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2007 |
| northstar energy services, inc. E0587002010-4 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2010 |
| probst electric inc. E0071772008-8 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2008 |
| qsi (de), inc. E32704702023-9 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2023 |
| safety test & equipment company, inc. E47907582025-1 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2025 |
| sherman + reilly, inc. E34427832023-7 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2023 |
| THE RYAN COMPANY, INC. OF MASSACHUSETTS E0495492008-6 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2008 |
| winco powerline services, inc. E0091002016-1 | Corporación extranjera | Activa Al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2016 |
| lex engineering ltd. E0301152019-6 | Corporación extranjera | Retirada No está al corriente | Director | 2727 North Loop West, Houston TX 77001 | 2019 |
| m. g. dyess, inc. E0439372009-5 | Corporación extranjera | Convertida a otra jurisdicción No está al corriente | Director | 2800 Post Oak Blvd, Ste 2600, Houston TX 77001 | 2009 |
| quanta electric power construction management, inc. E0315612005-2 | Corporación extranjera | Retirada No está al corriente | President | 2800 Post Oak Blvd., Ste. 2600, Houston TX 77001 | 2005 |
| quanta pipeline services, inc. E9621662020-5 | Corporación extranjera | Convertida a otra jurisdicción No está al corriente | Director | 2800 Post Oak Blvd, Ste 2600, Houston TX 77001 | 2020 |