Nucleco’s governance system consists of the Shareholder’s Meeting, the Board of Directors and the Board of Auditors.

The Shareholder’s Meeting is made up of Sogin and Enea, which respectively hold 60% and 40% of the share capital and are responsible for making the most important decisions for the Company, including the appointment of corporate bodies, the approval of the budget and the distribution of dividends.

The Board of Directors is responsible for the management of the Company. Currently it is composed of the following members:
- Nadia Cherubini - President
- Agostino Rivieccio - CEO
- Mario Lazzeri - Director​

The Board of Auditors is responsible for, among other things, compliance with the law and articles of association and compliance with the principles of proper administration.

The Board of Auditors, appointed for the 2020-2022 period, is composed of the following members:
- Mauro Sandroni, President
- Maria Angela Rocca, Statutory Auditor
- Marco Avagliano, Statutory Auditor
- Antonino Cianca, Deputy Auditor
- Roberto Iaschi, Deputy Auditor

The Supervisory Board, in its collegial form, is composed of the following members for the 2021-2023 period:
- Mariangela Di Giandomenico, President and external member
- Francesco Cardella, external member
- Sara Travaglini​, internal member