| Business | Phone |
| Oneok Energy Marketing Co 3706 Sw Topeka Blvd # 100, Topeka 66609 | (785) 274-4900 |
| Haris Inc 2701 Se California Ave, Topeka 66605 | (785) 266-7217 |
| Kansas Gas & Electric Co 501 Gadge St, Topeka 66603 | (785) 575-8500 |
| Kaw Valley Propane Inc 1100 Sw Auburn Rd, Topeka 66615 | (785) 478-4224 |