The boom that las photovoltaic solar installations have experienced in recent years has made it possible to complete the development of the complete cycle of this emerging technology, which culminates in the feedback of las experiences obtained in the operation and maintenance of these systems. In este manual, the maintenance of these systems is approached with an eminently practical and didactic approach, both in its preventive and corrective aspects, with the aim of extending the useful life of the installation. Important aspects such as general costs, warehouse and stock organization are also analyzed. All the knowledge acquired will allow us to influence the design phase of these facilities, improving las performance of both existing las facilities and las that are created in the future and facilitating their maintenance.