Decision and Details
Board of Directors (resolution to establish the special investigation committee)Inappropriate conduct related to the formulation of design-basis ground motions in the review of Hamaoka Nuclear Power Station's compliance with New Regulatory Requirements
To investigate the facts and causes of the subject matter and consider measures to prevent recurrence while ensuring transparency and fairness.
The subject matter is considered capable of having a serious impact on the review for conformity with new regulatory requirements and potentially shaking the foundations of the nuclear energy business. The specific amount of the impact on financial results is Not disclosed.
| Item | Details |
|---|---|
| Matter Covered | Inappropriate conduct related to the formulation of design-basis ground motions in the review of Hamaoka Nuclear Power Station's compliance with New Regulatory Requirements |
| Decision-Making Body | Board of Directors (resolution to establish the special investigation committee) |
| Decision Date | 5 January 2026 |
| Implementation Date | 11 September 2026 (publication date of the publicly disclosed version of the Investigation Report; actual date) |
| Period Covered | Investigation period: 5 January 2026 to 11 September 2026 |
| Quantity / scale | 87 interviews and other sessions in total, 54 people covered, 28 people subject to digital forensics, 6,296 items reviewed, 4,221 people surveyed and 3,796 responses, 36 committee meetings |
| Impact on Business Performance | The subject matter is considered capable of having a serious impact on the review for conformity with new regulatory requirements and potentially shaking the foundations of the nuclear energy business. The specific amount of the impact on financial results is Not disclosed. |
| Reason | To investigate the facts and causes of the subject matter and consider measures to prevent recurrence while ensuring transparency and fairness. |
| Governing Rule | Articles 43-3-5 and other provisions of the Act on the Regulation of Nuclear Source Material, Nuclear Fuel Material and Reactors; Article 67, Paragraph 1 of the Act on the Regulation of Nuclear Source Material, Nuclear Fuel Material and Reactors; Article 106, Paragraph 3 of the Electricity Business Act; Japan Federation of Bar Associations, Guidelines for Third-Party Committees in Corporate Misconduct |
| Related previous disclosures | Chubu Electric Power press release dated 5 January 2026 (press release concerning the subject matter); Board of Directors resolution dated 5 January 2026 |
| Future plans | Chubu Electric Power will implement measures to prevent recurrence based on the contents of this report, and will also verify the facts and take any additional measures necessary with respect to similar cases outside the scope of the investigation. |
Items this document does not state (1)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.Because the subject matter could have a serious impact on the review for conformity with new regulatory requirements, could severely undermine stakeholders' trust in Chubu Electric Power's nuclear energy business, and could potentially shake the foundations of that business, making it necessary to investigate the facts, causes, and measures to prevent recurrence while ensuring transparency and fairness.