| Business | Phone |
| Star Resources 9429 Singing Quail Dr, Austin 78758 | (512) 491-0035 |
| Sun Up Enterprises Inc Austin 78701 | (512) 472-9382 |
| Sustainable Energy & Economic 611 S Congress Ave, Austin 78704 | (512) 479-7744 |
| Siemens 1826 Kramer Ln, Austin 78758 | (512) 339-6993 |
| Siemens Building Technologies 1835 Kramer Ln # B 180, Austin 78758 | (512) 339-6991 |
| Representation Resources 1004 West Ave, Austin 78701 | (512) 478-7188 |
| Neil Mc Andrews & Assoc 2600 Forest Bend Dr, Austin 78704 | (512) 415-3227 |
| Object Resources Inc 816 Congress Ave, Austin 78701 | (512) 485-4598 |
| Frontier Associates Llc 4131 Spicewood Springs Rd 3, Austin 78759 | (512) 372-8480 |
| Federer Resources Inc 106 E 6th St, Austin 78701 | (512) 476-8800 |
| Focus Energy Technology 9430 Research Blvd, Austin 78759 | (512) 343-4521 |
| Custom Energy Solutions Inc 11409 Ladera Vista Dr, Austin 78759 | (512) 336-9334 |
| Custom Energy Solutions Inc 9514 Mcneil Rd # 209, Austin 78758 | (512) 719-3028 |
| Coordinated Resources 8127 Mesa Dr B206, Austin 78759 | (512) 413-6799 |
| Cartera Resources 111 Congress Ave, Austin 78701 | (512) 391-3852 |
| E-Commerce Austin 918 W 3rd St, Austin 78703 | (512) 477-0929 |
| Fuels Co 13625 Pond Springs Rd 106, Austin 78729 | (512) 331-5181 |
| High Energy Sites Inc Austin 78735 | (512) 891-5385 |
| King Energy Consulting 505 E 39th St, Austin 78751 | (512) 452-1526 |
| Novinger Resources Inc 7212 W Highway 71 # C, Austin 78735 | (512) 288-0909 |
| Terra Resources Intl 3607 Leafield Dr # B, Austin 78749 | (512) 282-0107 |
| Cahillion Resources Unlimited 7918 Eudora Ln, Austin 78747 | (512) 282-0986 |
| Star Resources 4609 N Ih 35, Austin 78722 | (512) 419-1378 |
| Cawley Gillespie & Assoc Inc 9601 Amberglen Blvd 117, Austin 78729 | (512) 249-7000 |
| Cohort Resources 3605 Bratton Ridge Xing, Austin 78728 | (512) 246-6070 |
| Ercot 7620 Metro Center Dr, Austin 78744 | (512) 386-9116 |
| Green Collar Operations 1908 W Koenig, Austin 78756 | (512) 986-7045 |