| Case Number | Case Title | Open Date | Closed Date |
| 88-1115-GE-PIP | PIP PLAN | 07/27/1988 | 12/02/1993 |
| 89-0171-GE-PIP | COLUMBIA GAS OF OHIO, INC. | 01/25/1989 | 08/30/1989 |
| 90-0705-GE-PIP | COMMISSION REVIEW OF PIPP PROGRAM | 04/26/1990 | 12/02/1993 |
| 92-0337-GE-PIP | IMPLEMENTATION/ADDITIONAL PYMT PLAN | 02/25/1992 | 04/02/1992 |
| 92-1544-GE-PIP | DAYTON POWER & ELECTRIC COMPANY | 08/28/1992 | 03/24/1994 |
| 94-0153-GE-PIP | AMENDMENT OF RULE 4901:1-18 | 01/26/1994 | 03/29/1995 |
| 94-0551-GE-PIP | CINCINNATI GAS & ELECTRIC CO. | 03/24/1994 | 04/27/1994 |
| 96-1120-GE-PIP | CINCINNATI GAS & ELECTRIC COMPANY | 10/21/1996 | 12/19/1996 |
| 99-0751-GE-PIP | DAYTON POWER & LIGHT COMPANY | 06/23/1999 | 08/19/1999 |