| Brad Epperly | American Clean Power Association | Opposing | GA89 |
| Brad Epperly | American Clean Power Association | Undecided | GA89 |
| Dustin Miller | American Clean Power Association | Opposing | GA89 |
| Dustin Miller | American Clean Power Association | Undecided | GA89 |
| Josh Mandelbaum | Environmental Law and Policy Center | Opposing | GA89 |
| Steve Falck | Environmental Law and Policy Center | Opposing | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Brad Epperly | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Dustin Miller | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Jake Ketzner | Iowa Conservative Energy Forum | Undecided | GA89 |
| Jordan Oster | Iowa Environmental Council | Opposing | GA89 |
| Kerri Johannsen | Iowa Environmental Council | Opposing | GA89 |
| Michael Schmidt | Iowa Environmental Council | Opposing | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA89 |
| William Peterson | Iowa State Association of Counties | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA89 |
| Maison Bleam | Iowa Utilities Board | Undecided | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Opposing | GA89 |
| Kate Walton | Missouri River Energy Services | Undecided | GA89 |
| Kersten Johnson | Missouri River Energy Services | Undecided | GA89 |
| Matt Eide | Missouri River Energy Services | Undecided | GA89 |
| Brian Johnson | NextEra Energy | Opposing | GA89 |
| Christopher Rants | NextEra Energy | Opposing | GA89 |
| Justin Hupfer | NextEra Energy | Opposing | GA89 |
| Doug Struyk | The Nature Conservancy | Undecided | GA89 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA89 |
| Jim Carney | The Nature Conservancy | Undecided | GA89 |