| Business | Phone |
| Allis-Chalmers Energy Corp 5075 Westheimer Rd 890, Houston 77056 | (713) 369-0550 |
| Solar Turbines Inc 7600 W Tidwell Rd, Houston 77040 | (713) 939-7700 |
| Wood Group Turbine Components 6225 W Sam Houston Pkwy N A, Houston 77041 | (806) 779-2417 |
| Siemens Westinghouse 10777 Westheimer Rd 140, Houston 77042 | (713) 735-2200 |
| Advanced Combustion Technology 8837 W Monroe Rd, Houston 77061 | (713) 910-8800 |
| Alstom Power 14811 Saint Marys Ln, Houston 77079 | (281) 597-8524 |
| Btec Turbines Lp 16730 Jacintoport Blvd, Houston 77015 | (281) 864-9122 |
| E Turbines 3030 Greens Rd, Houston 77032 | (281) 442-2700 |
| Ge Energy 8800 Wallisville Rd, Houston 77029 | (713) 672-3500 |
| Ge Oil & Gas Inc 1333 West Loop S # 1000, Houston 77027 | (713) 803-0900 |
| General Electric 19827 Cardiff Park Ln, Houston 77094 | (281) 646-1559 |
| Leading Edge Turbine Tech Inc 20120 E Hardy Rd, Houston 77073 | (281) 821-2255 |
| Keys Upholstery 5731 Cornish St, Houston 77007 | (713) 864-7299 |
| Multiphase Power & Processing 7909 Parkwood Circle Dr, Houston 77036 | (713) 272-1125 |