| Case Number | Case Title | Open Date | Closed Date |
| 00-0521-GA-PIP | CINCINNATI GAS & ELECTRIC COMPANY | 03/20/2000 | |
| 01-1697-GA-PIP | VECTREN ENERGY DELIVERY OF OHIO, INC | 06/29/2001 | |
| 02-2295-GA-PIP | PIKE NATURAL GAS COMPANY | 09/05/2002 | |
| 02-2296-GA-PIP | EASTERN NATURAL GAS COMPANY | 09/05/2002 | |
| 02-2297-GA-PIP | SOUTHERN EASTERN NATURAL GAS COMPANY | 09/05/2002 | |
| 03-1096-GA-PIP | THE CINCINNATI GAS & ELECTRIC COMPANY | 04/30/2003 | |
| 03-1812-GA-PIP | OHIO GAS COMPANY | 08/15/2003 | |
| 05-0512-GA-PIP | THE CINCINNATI GAS AND ELECTRIC COMPANY | 04/15/2005 | 05/31/2005 |
| 05-0778-GA-PIP | OHIO GAS COMPANY | 06/15/2005 | 07/31/2005 |
| 05-1421-GA-PIP | EAST OHIO GAS COMPANY DBA DOMINION EAST OHIO | 11/21/2005 | 02/01/2006 |
| 05-1427-GA-PIP | COLUMBIA GAS OF OHIO, INC | 11/21/2005 | 02/01/2006 |
| 06-1030-GA-PIP | SOUTHEASTERN NATURAL GAS COMPANY | 08/15/2006 | 09/24/2007 |
| 06-1031-GA-PIP | EASTERN NATURAL GAS COMPANY | 08/15/2006 | 10/11/2006 |
| 06-1032-GA-PIP | PIKE NATURAL GAS COMPANY | 08/15/2006 | 10/11/2006 |
| 06-1496-GA-PIP | VECTREN ENERGY DELIVERY OF OHIO INC | 12/21/2006 | 09/24/2007 |
| 08-0944-GA-PIP | EASTERN NATURAL GAS COMPANY | 08/01/2008 | |
| 08-0945-GA-PIP | PIKE NATURAL GAS COMPANY | 08/01/2008 | |
| 08-0946-GA-PIP | SOUTHEASTERN NATURAL COMPANY | 08/01/2008 | |
| 09-2011-GA-PIP | THE EAST OHIO GAS COMPANY DBA DOMINION EAST OHIO | 12/31/2009 | |
| 10-0604-GA-PIP | EAST OHIO GAS COMPANY DBA DOMINION EAST OHIO GAS COMPANY | 05/19/2010 | |
| 11-1022-GA-PIP | EAST OHIO GAS COMPANY | 02/25/2011 | |
| 87-1288-GA-PIP | DAYTON POWER & LIGHT COMPANY | 08/24/1987 | 08/16/1990 |
| 89-0165-GA-PIP | EAST OHIO GAS COMPANY | 01/25/1989 | 08/30/1989 |
| 89-0166-GA-PIP | WEST OHIO GAS COMPANY | 01/25/1989 | 08/30/1989 |
| 89-0167-GA-PIP | RIVER GAS COMPANY | 01/25/1989 | 08/30/1989 |
| 89-0168-GA-PIP | DAYTON POWER AND LIGHT COMPANY | 01/25/1989 | 08/30/1989 |
| 89-0329-GA-PIP | OHIO VALLEY GAS CORPORATION | 02/23/1989 | 08/30/1989 |
| 89-1207-GA-PIP | EAST OH GAS-RIVER GAS-WEST OH GAS | 08/09/1989 | 08/30/1989 |
| 89-1614-GA-PIP | COLUMBIA GAS OF OHIO, INC. | 10/31/1989 | 12/19/1989 |
| 90-1381-GA-PIP | EAST OH GAS/WEST OH GAS/RIVER GAS | 08/31/1990 | 09/20/1990 |
| 91-2053-GA-PIP | WEST OHIO GAS COMPANY | 11/08/1991 | 12/05/1991 |
| 92-0363-GA-PIP | EASTERN NATURAL GAS COMPANY | 02/27/1992 | 12/02/1992 |
| 93-0136-GA-PIP | EAST OHIO GAS COMPANY | 01/19/1993 | 02/10/1993 |
| 93-0137-GA-PIP | RIVER GAS COMPANY | 01/19/1993 | 02/10/1993 |
| 93-0562-GA-PIP | COLUMBIA GAS OF OHIO, INC. | 04/05/1993 | 04/22/1993 |
| 94-1981-GA-PIP | EAST OHIO GAS COMPANY | 12/14/1994 | 01/26/1995 |
| 95-0791-GA-PIP | OHIO VALLEY GAS CORP. | 08/23/1995 | 09/28/1995 |
| 96-0052-GA-PIP | OHIO GAS COMPANY | 01/17/1996 | 03/14/1996 |
| 96-0295-GA-PIP | EAST OHIO GAS COMPANY | 03/25/1996 | 05/08/1996 |
| 96-1209-GA-PIP | PIKE NATURAL GAS COMPANY | 11/14/1996 | 03/27/1997 |
| 97-0183-GA-PIP | EAST OHIO GAS COMPANY | 02/20/1997 | 04/03/1997 |
| 99-0145-GA-PIP | EAST OHIO GAS COMPANY | 02/12/1999 | 04/29/1999 |