| Brian Hickman | American Municipal Power | — | Sep-Dec21 |
| Michael A Beirne | American Municipal Power | — | Sep-Dec21 |
| Terrence O'Donnell | Apex Clean Energy, Inc. | — | Sep-Dec21 |
| William Vorys | Apex Clean Energy, Inc. | — | Sep-Dec21 |
| Claire Bennett | Association of Ohio Drinking Water Agencies | — | Sep-Dec22 |
| David Rees Alexander | Association of Ohio Drinking Water Agencies | — | Sep-Dec22 |
| Nathanael Jonhenry | Association of Ohio Drinking Water Agencies | — | Sep-Dec22 |
| Claire Bennett | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec22 |
| David Rees Alexander | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec22 |
| Nathanael Jonhenry | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec22 |
| Timothy J Cosgrove | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec22 |
| Terrence O'Donnell | Carbon Solutions Group | — | Sep-Dec21 |
| William Vorys | Carbon Solutions Group | — | Sep-Dec21 |
| Sherri Warner | City of Cincinnati | — | Sep-Dec22 |
| Mike Culp | City of Cleveland | — | Sep-Dec22 |
| Andrew Minton | City of Columbus | — | Sep-Dec21 |
| Greg Bennett | City of Columbus | — | Sep-Dec21 |
| Stephen Nielson | City of Columbus | — | Sep-Dec21 |
| Stephen Sayre | City of Columbus | — | Sep-Dec21 |
| William L Byers, IV | City of Columbus | — | Sep-Dec21 |
| Michael Dittoe | City of Springfield | — | Sep-Dec22 |
| Spencer Gross | City of Springfield | — | Sep-Dec22 |
| Andrew Huffman | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Brooke A Cheney | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Kelsey Woolard | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Matthew S Whitehead | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Victor F Hipsley | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Adam Schwiebert | County Commissioners' Association of Ohio | — | Sep-Dec21 |
| Julia Wynn | County Treasurers' Association of Ohio | — | Sep-Dec22 |
| Kevin L Futryk | County Treasurers' Association of Ohio | — | Sep-Dec22 |
| Andrew Minton | Ductile Iron Pipe Research Association | — | Sep-Dec21 |
| Greg Bennett | Ductile Iron Pipe Research Association | — | Sep-Dec21 |
| William L Byers, IV | Ductile Iron Pipe Research Association | — | Sep-Dec21 |
| Terrence O'Donnell | EDP Renewables | — | Sep-Dec21 |
| William Vorys | EDP Renewables | — | Sep-Dec21 |
| Aaron Crooks | Governor's Office | — | Sep-Dec22 |
| Terrence O'Donnell | Hillcrest Solar I, LLC | — | Sep-Dec21 |
| William Vorys | Hillcrest Solar I, LLC | — | Sep-Dec21 |
| Terrence O'Donnell | Invenergy LLC | — | Sep-Dec21 |
| William Vorys | Invenergy LLC | — | Sep-Dec21 |
| Andrew Huffman | Jefferson-Belmont Regional Solid Waste Authority | — | Sep-Dec21 |
| Brooke A Cheney | Jefferson-Belmont Regional Solid Waste Authority | — | Sep-Dec21 |
| Matthew S Whitehead | Jefferson-Belmont Regional Solid Waste Authority | — | Sep-Dec21 |
| Victor F Hipsley | Jefferson-Belmont Regional Solid Waste Authority | — | Sep-Dec21 |
| Brian Durdle | Lake County | — | Sep-Dec22 |
| Terrence O'Donnell | Lake Erie Energy Development Corporation | — | Sep-Dec21 |
| William Vorys | Lake Erie Energy Development Corporation | — | Sep-Dec21 |
| Dee Smith | National Waste & Recycling Association | — | Sep-Dec21 |
| Willa J Ebersole | National Waste & Recycling Association | — | Sep-Dec21 |
| Andrew Huffman | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Brooke A Cheney | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Kelsey Woolard | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Matthew S Whitehead | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Victor F Hipsley | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Gretchen Craycraft | Ohio Environmental Protection Agency | — | Sep-Dec21 |
| Jessica Langdon | Ohio Environmental Protection Agency | — | Sep-Dec21 |
| Laurie Stevenson | Ohio Environmental Protection Agency | — | Sep-Dec21 |
| Mark S. Johnson Jr. | Ohio Environmental Protection Agency | — | Sep-Dec22 |
| Andrea Reichman | Ohio Manufactured Homes Association (OMHA) | — | Sep-Dec21 |
| Andrew Huffman | Ohio Manufactured Homes Association (OMHA) | — | Sep-Dec21 |
| Brooke A Cheney | Ohio Manufactured Homes Association (OMHA) | — | Sep-Dec21 |
| Kelsey Woolard | Ohio Manufactured Homes Association (OMHA) | — | Sep-Dec21 |
| Matthew S Whitehead | Ohio Manufactured Homes Association (OMHA) | — | Sep-Dec21 |
| Timothy Williams | Ohio Manufactured Homes Association (OMHA) | — | Sep-Dec21 |
| Victor F Hipsley | Ohio Manufactured Homes Association (OMHA) | — | Sep-Dec21 |
| Brian Hickman | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Courtney Saunders | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Daniel P Leite | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Denise M Larr | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Joseph Price | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Kurt L Leib | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Lisa McAlister | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Michael A Beirne | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Robert N Eshenbaugh, Jr | Ohio Municipal Electric Association | — | Sep-Dec21 |
| William Fitzgibbon | Ohio Municipal Electric Association | — | Sep-Dec21 |
| Edward L Albright | Ohio Municipal League | — | Sep-Dec21 |
| Thomas Wetmore | Ohio Municipal League | — | Sep-Dec21 |
| Andrew Huffman | Ohio Real Estate Investors Association | — | Sep-Dec21 |
| Brooke A Cheney | Ohio Real Estate Investors Association | — | Sep-Dec21 |
| Dan Acton | Ohio Real Estate Investors Association | — | Sep-Dec21 |
| Kelsey Woolard | Ohio Real Estate Investors Association | — | Sep-Dec21 |
| Matthew S Whitehead | Ohio Real Estate Investors Association | — | Sep-Dec21 |
| Patrick Markovich | Ohio Real Estate Investors Association | — | Sep-Dec21 |
| Victor F Hipsley | Ohio Real Estate Investors Association | — | Sep-Dec21 |
| Andrew Huffman | Ohio Rural Water Association | — | Sep-Dec21 |
| Brooke A Cheney | Ohio Rural Water Association | — | Sep-Dec21 |
| Kelsey Woolard | Ohio Rural Water Association | — | Sep-Dec21 |
| Matthew S Whitehead | Ohio Rural Water Association | — | Sep-Dec21 |
| Victor F Hipsley | Ohio Rural Water Association | — | Sep-Dec21 |
| Terrence O'Donnell | RWE Americas Services, LLC | — | Sep-Dec21 |
| William Vorys | RWE Americas Services, LLC | — | Sep-Dec21 |
| Steven H White | Republic Services, Inc. | — | Sep-Dec21 |
| Jason Dodson | Summit County | — | Sep-Dec21 |
| Julianna Moyer | Summit County | — | Sep-Dec22 |
| Sherri Warner | Summit County | — | Sep-Dec21 |
| Thomas Book | Summit County | — | Sep-Dec22 |
| Allison Lawlor | The Williams Companies, Inc. | — | Sep-Dec22 |
| Dave Salisbury | The Williams Companies, Inc. | — | Sep-Dec22 |
| Jimmy Wolf | The Williams Companies, Inc. | — | Sep-Dec22 |
| Lisa H Dodge | The Williams Companies, Inc. | — | Sep-Dec22 |
| Sean P Dunn | The Williams Companies, Inc. | — | Sep-Dec22 |
| Anthony Aquillo | Waste Management of Ohio, Inc. | — | Sep-Dec21 |
| Kathryn A Trent | Waste Management of Ohio, Inc. | — | Sep-Dec21 |
| McKenzie K Davis | Waste Management of Ohio, Inc. | — | Sep-Dec21 |
| Michael Toman | Waste Management of Ohio, Inc. | — | Sep-Dec21 |