| Jeffrey Boeyink | Alliant Energy Corporation | Opposing | GA89 |
| Taylor McDonald | Alliant Energy Corporation | Opposing | GA89 |
| Ted Stopulos | Alliant Energy Corporation | Opposing | GA89 |
| Tony Phillips | Black Hills Energy | Opposing | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Emilee Harris-Puricelli | Des Moines Water Works | Undecided | GA89 |
| Nick Laning | Des Moines Water Works | Opposing | GA89 |
| Nick Laning | Des Moines Water Works | Undecided | GA89 |
| Threase Harms | Des Moines Water Works | Undecided | GA89 |
| Josh Mandelbaum | Environmental Law and Policy Center | Supporting | GA89 |
| Steve Falck | Environmental Law and Policy Center | Supporting | GA89 |
| Michael Triplett | Greater Iowa Apartment Association | Opposing | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Opposing | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Opposing | GA89 |
| Julie Smith | Iowa Association of Water Agencies | Opposing | GA89 |
| Matt Gannon | Iowa Attorney General Dept. of Justice | Supporting | GA89 |
| Tom Chapman | Iowa Catholic Conference | Supporting | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA89 |
| Emilee Harris-Puricelli | Iowa Environmental Council | Supporting | GA89 |
| Andy Conlin | Iowa Manufactured Housing Association | Undecided | GA89 |
| Emily Piper | Iowa Rural Water Association | Opposing | GA89 |
| David Adelman | MidAmerican Energy Company | Opposing | GA89 |
| Frank Chiodo | MidAmerican Energy Company | Opposing | GA89 |
| Lillie Brady | MidAmerican Energy Company | Opposing | GA89 |
| Matt Hinch | MidAmerican Energy Company | Opposing | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Opposing | GA89 |
| Sara Allen | MidAmerican Energy Company | Opposing | GA89 |
| Kate Walton | Missouri River Energy Services | Undecided | GA89 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA89 |
| Matt Eide | Missouri River Energy Services | Undecided | GA89 |
| Jake Ketzner | Urbandale Water Utility | Opposing | GA89 |
| Larry Blixt | Urbandale Water Utility | Opposing | GA89 |