| Business | Phone |
| Sempra Energy Trading 58 Commerce Rd, Stamford 6902 | (203) 355-5000 |
| Prolean Energy Advisors 9 Dora St, Stamford 6902 | (203) 359-9207 |
| Direct Energy 263 Tresser Blvd, Stamford 6901 | (203) 328-3540 |
| Energy America Llc 263 Tresser Blvd # 9, Stamford 6901 | (203) 323-2242 |