| Amy Campbell | AARP Iowa | Supporting | GA89 |
| Brad Anderson | AARP Iowa | Supporting | GA89 |
| Craig Patterson | AARP Iowa | Supporting | GA89 |
| Jeffrey Boeyink | Alliant Energy Corporation | Opposing | GA89 |
| Julie Vande Hoef | Alliant Energy Corporation | Opposing | GA89 |
| Taylor McDonald | Alliant Energy Corporation | Opposing | GA89 |
| Ted Stopulos | Alliant Energy Corporation | Opposing | GA89 |
| Kate Walton | Arconic (Formerly Alcoa) | Supporting | GA89 |
| Matt Eide | Arconic (Formerly Alcoa) | Supporting | GA89 |
| Tony Phillips | Black Hills Energy | Opposing | GA89 |
| Don Brown | Cargill | Supporting | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Bob Rafferty | Iowa American Water Co. | Undecided | GA89 |
| Nick Laning | Iowa American Water Co. | Undecided | GA89 |
| Rachel Ong | Iowa American Water Co. | Undecided | GA89 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | 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 |
| Paula Dierenfeld | Iowa Business Energy Coalition (IBEC) | Supporting | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Jordan Oster | Iowa Environmental Council | Undecided | GA89 |
| Kerri Johannsen | Iowa Environmental Council | Undecided | GA89 |
| Michael Schmidt | Iowa Environmental Council | Undecided | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Withdrawn | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA89 |
| Maison Bleam | Iowa Utilities Board | Undecided | GA89 |
| Chaz Allen | Iowa Utility Association | Opposing | GA89 |
| Michael Gronstal | Iowa Utility Association | Opposing | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | 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 |
| Jeff Cook | Office of Consumer Advocate | Supporting | GA89 |
| Kate Walton | POET, LLC | Supporting | GA89 |
| Matt Eide | POET, LLC | Supporting | GA89 |