| Business | Phone |
| Bio Mass Energy Concepts Llc 300 Vestavia Pkwy, Birmingham 35216 | (205) 795-2085 |
| Energy & Lighting Consultants 977 Riverchase Pkwy W, Birmingham 35244 | (205) 988-5731 |
| Crescent Resources 2100 Southbridge Pkwy, Birmingham 35209 | (205) 414-7568 |
| Horton Controls Inc 3070 Green Valley Rd, Birmingham 35243 | (205) 271-1487 |