A clear and understandable institutional framework, including the roles and mandates of the different agencies involved (e.g. PPP units, supreme audit institution, sector regulators) should also be established. A clear and reliable legal framework for PPPs - together with transparent disclosure of bid assessment methods, such as computation of the PSC -provides an important policy signal to the private sector. Considering the technical complexities associated with clean energy technologies, it will also be important that the PPP unit possess the necessary technical and human resources capacity to accurately evaluate the risks, benefits and costs associated with PPPs in clean energy infrastructure.