| Case Number | Case Title | Open Date | Closed Date |
| 20-0681-GA-GPS | In the Matter of the investigation of Dominion Energy Ohio relative to compliance with the Natural Gas Pipeline safety standards | 04/01/2020 | |
| 21-0205-GA-GPS | In the Matter of the investigation of the Foraker Gas Company relative to compliance with the Natural Gas Pipeline Safety standards | 03/08/2021 | |
| 22-0854-GA-GPS | In the Matter of the investigation of Duke Energy relative to compliance with the Natural Gas Pipeline safety standards. | 09/14/2022 | |
| 22-0998-GA-GPS | In the Matter of the Investigation of the Northeast Ohio Natural Gas Company relative to compliance with the Natural Gas Pipeline safety standards. | 10/31/2022 | |
| 24-0150-GA-GPS | In the Matter of the investigation of Dominion Energy Ohio relative to compliance with the Natural Gas Pipeline safety standards | 02/21/2024 | |
| 89-1448-GA-GPS | COLUMBUS METROPOLITAN HOUSING AUTH. | 10/04/1989 | |