The Public-Private-People Partnership, as a novel approach in planning, focuses on enhancing interaction and leveraging capacities beyond governmental sectors. This model emphasizes the active involvement of the public and non-governmental organizations in the development and implementation of projects, aiming to mitigate challenges related to lack of transparency and legitimacy in public and private sector interactions by increasing public oversight. In this process, the role of people is crucial. People act not only as stakeholders but also as observers and participants in decision-making and project oversight processes. Given the importance of transparency and accountability in this model, public participation in projects can help reduce corruption and enhance public trust. Moreover, public involvement can serve as a tool to ensure that policies and projects are effectively implemented and benefit the local community. The fundamental question of this research is: What are the legal challenges in implementing the Public-Private-People Partnership model? Findings of this research indicate that successful implementation of this model requires robust legal frameworks that clearly define the roles and responsibilities of stakeholders. The absence of such frameworks can lead to diminished trust and delays in project implementation. Additionally, the protection of intellectual property rights and data transparency is essential to ensure innovative collaborations and public trust. Ultimately, participatory governance, by enhancing transparency and accountability, can improve the efficiency and sustainability of this model and contribute to the desirable development of the energy industry. This requires the updating of management theories and mechanisms and effective collaboration between government and new actors.