| Business | Phone |
| Xcel Energy Svc Inc 816 Congress Ave, Austin 78701 | (512) 478-9229 |
| Tera 6207 Bee Caves Rd # 225, Austin 78746 | (512) 261-3663 |
| Sempra Texas Svc 2705 Bee Cave Rd, Austin 78746 | (512) 314-8600 |
| Retail Energy Aggregators-Tx 4412 Spicewood Springs Rd, Austin 78759 | (512) 346-9090 |
| Pacific Natural Energy 2901 Bee Cave Rd, Austin 78746 | (512) 615-8486 |
| North Shore Energy 1524 S I H 35, Austin 78704 | (512) 445-4411 |
| Integrated Energy 11782 Jollyville Rd, Austin 78759 | (512) 219-4015 |
| Future Power & Energy Inc 13010 N Highway 183 101b, Austin 78750 | (512) 258-1788 |
| Energy Data Source 100 Congress Ave # 2000, Austin 78701 | (512) 383-1076 |
| Southren Union Co 221 W 6th St, Austin 78701 | (512) 536-8650 |
| Csg Svc Inc 1250 S Capital Of Tx Hwy 210, Austin 78746 | (512) 327-6830 |
| Direct Energy 221 W 6th St, Austin 78701 | (512) 542-7800 |
| Green Mountain Energy 300 W 6th St, #900, Austin 78701 | (512) 833-5872 |
| Allied Energy Systems 3904 Warehouse Row # C, Austin 78704 | (512) 707-2148 |
| Toro Energy Inc 510 Hearn St, Austin 78703 | (512) 322-9781 |
| Oneok Energy Marketing Co 5113 Sw Parkway, Austin 78735 | (512) 899-1216 |
| Phyaam Shirazi 111 W Anderson Ln, Austin 78752 | (512) 206-0555 |
| Texas Energy Group 1313 Ranch Road 620 S, Austin 78734 | (512) 263-8106 |
| Williams Energy Svc 9301 W Highway 290, Austin 78736 | (512) 394-4000 |
| Nexle Corp 1700 Dungan Ln, Austin 78754 | (512) 219-3277 |
| Norwood Energy Consulting Llc 9408 Bell Mountain Dr, Austin 78730 | (512) 343-9077 |
| Day Star Energy Partners 1313 620 S, Austin 78734 | (512) 263-6965 |
| Energy Efficiency Experts 13712 Trail Driver St, Austin 78737 | (512) 394-1898 |
| GreenTex Builders 5716 Hwy 290 W, Ste 210, Austin 78735 | (512) 891-0819 |