| 4171 | 104b | T | EILPC WILTON | Eastern Iowa Light & Power CO-OP Wilton | Utilities |
| 4175 | 104f | T | SW IOWA REC 1 | Southwest Iowa Rural Electric Cooperative 1 | Utilities |
| 4176 | 1050 | T | SW IOWA REC 2 | Southwest Iowa Rural Elecric Cooperative 2 | Utilities |
| 4177 | 1051 | T | SW IOWA REC | Southwest Iowa REC - Stanton | Utilities |
| 4180 | 1054 | T | TIP REC OPS | TIP Operations | Utilities |
| 4181 | 1055 | T | TIP REC FLAGGERS | TIP Flaggers | Utilities |
| 4360 | 1108 | T | GUTHRIE CO REC | Guthrie Co REC | Utilities |
| 4370 | 1112 | T | FARMERS ELECTRIC | Farmers Electric Cooperative | Utilities |
| 4390 | 1126 | T | CONSUMERS ENERGY | Consumers Energy Cooperative | Utilities |
| 4400 | 1130 | T | NIPCO | Northwest Iowa Power Co-op | Utilities |
| 4412 | 113c | T | WIPCO | Western Iowa Power Co-op | Utilities |
| 4420 | 1144 | T | CVEC | Chariton Valley Electric Coop | Utilities |
| 4449 | 1161 | T | IA LAKES COOP | Iowa Lakes Electric Co-op | Utilities |
| 4485 | 1185 | T | PELLA COOP ELEC | Pella Cooperative Electric Association | Utilities |
