| Case Number | Case Title | Open Date | Closed Date |
| 07-0121-GA-FOR | COLUMBIA GAS OF OHIO | 01/11/2007 | 02/15/2017 |
| 09-0116-GA-FOR | SUBURBAN NATURAL GAS COMPANY | 01/02/2009 | 02/10/2011 |
| 09-0118-GA-FOR | DUKE ENERGY OHIO INC | 01/02/2009 | 08/29/2023 |
| 10-0418-GA-FOR | IN THE MATTER OF THE LONG-TERM FORECAST REPORT OF DUKE ENERGY OHIO INC & RELATED MATERS | 03/24/2010 | 02/10/2011 |
| 11-0116-GA-FOR | SUBURBAN NATURAL GAS COMPANY | 08/31/2010 | 01/31/2014 |
| 11-1376-GA-FOR | NORTHEAST OHIO NATURAL GAS | 03/21/2011 | 01/31/2014 |
| 12-0109-GA-FOR | NORTHEAST OHIO NATURAL GAS CORP | 08/10/2012 | 01/31/2014 |
| 13-1700-GA-FOR | SUBURBAN NATURAL GAS COMPANY | 06/07/2013 | 01/31/2014 |
| 14-1700-GA-FOR | SUBURBAN NATURAL GAS COMPANY | 06/03/2014 | 04/29/2015 |
| 15-0109-GA-FOR | NORTHEAST OHIO NATURAL GAS CORP | 01/02/2015 | 10/16/2017 |
| 15-0118-GA-FOR | DUKE ENERGY OHIO | 01/02/2015 | 10/16/2017 |
| 15-0468-GA-FOR | IN THE MATTER OF THE NATURAL GAS LONGTERM FORCAST REPORT OF DUKE ENERGY OHIO, INC | 03/06/2015 | 08/26/2015 |
| 16-0109-GA-FOR | NORTHEAST OHIO NATURAL GAS CORP | 12/29/2015 | 10/27/2017 |
| 16-0118-GA-FOR | DUKE ENERGY OHIO | 12/29/2015 | 10/27/2017 |
| 17-1317-GA-FOR | Duke Energy Ohio, Inc | 06/01/2017 | 02/07/2020 |
| 17-1350-GA-FOR | SUBURBAN NATURAL GAS COMPANY | 06/01/2017 | 02/07/2020 |
| 90-0922-GA-FOR | EASTERN NATURAL GAS COMPANY | 06/01/1990 | 08/17/2023 |