This study prepared by the European Photovoltaic Industry Association (EPIA) aims to provide a holistic vision of how solar electricity will be integrated in the electricity system. The work involved interviewing several network operators, both at transmission and distribution level, so as to identify best practices and build recommendations on the basis of real-world experience. The identified challenges have been answered with existing and potential future solutions, making the best use of PV systems capabilities, which are today vastly underestimated.