| Amy Campbell | AARP Iowa | Supporting | GA88 |
| Brad Anderson | AARP Iowa | Supporting | GA88 |
| Craig Patterson | AARP Iowa | Supporting | GA88 |
| Jeffrey Boeyink | Alliant Energy Corporation | Opposing | GA88 |
| Julie Vande Hoef | Alliant Energy Corporation | Opposing | GA88 |
| Taylor McDonald | Alliant Energy Corporation | Opposing | GA88 |
| Kate Walton | Arconic (Formerly Alcoa) | Supporting | GA88 |
| Matt Eide | Arconic (Formerly Alcoa) | Supporting | GA88 |
| Tony Phillips | Black Hills Energy | Undecided | GA88 |
| Tony Phillips | Black Hills Energy | Opposing | GA88 |
| Don Brown | Cargill | Supporting | GA88 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA88 |
| Josh Mandelbaum | Environmental Law and Policy Center | Undecided | GA88 |
| Steve Falck | Environmental Law and Policy Center | Undecided | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Undecided | GA88 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA88 |
| Bob Rafferty | Iowa American Water Co. | Opposing | GA88 |
| Rachel Ong | Iowa American Water Co. | Opposing | GA88 |
| Robert Szalay | Iowa American Water Co. | Opposing | GA88 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Katie Graham | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Paula Dierenfeld | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Brad Epperly | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Dustin Miller | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Katie Graham | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Paula Dierenfeld | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Timothy Whipple | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Brad Epperly | Iowa Business Energy Coalition (IBEC) | Supporting | GA88 |
| Dustin Miller | Iowa Business Energy Coalition (IBEC) | Supporting | GA88 |
| Katie Graham | Iowa Business Energy Coalition (IBEC) | Supporting | GA88 |
| Paula Dierenfeld | Iowa Business Energy Coalition (IBEC) | Supporting | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA88 |
| Katie Hall | Iowa Communications Alliance | Withdrawn | GA88 |
| Katie Hall | Iowa Communications Alliance | Supporting | GA88 |
| Mike St. Clair | Iowa Communications Alliance | Withdrawn | GA88 |
| Mike St. Clair | Iowa Communications Alliance | Supporting | GA88 |
| Jennifer Terry | Iowa Environmental Council | Undecided | GA88 |
| Jordan Oster | Iowa Environmental Council | Undecided | GA88 |
| Kerri Johannsen | Iowa Environmental Council | Undecided | GA88 |
| Michael Schmidt | Iowa Environmental Council | Undecided | GA88 |
| Geri Huser | Iowa Utilities Board | Undecided | GA88 |
| Louis Vander Streek | Iowa Utilities Board | Undecided | GA88 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA88 |
| Brian Johnson | NextEra Energy | Undecided | GA88 |
| Jeff Cook | Office of Consumer Advocate | Supporting | GA88 |
| Monica McCarthy | Older Iowans Legislature | Supporting | GA88 |