The project creates a professional, interdisciplinary framework for the approval process of PV installations in heritage zones. The framework will increase the process predictability for investors, bring mutual understanding of the interests and needs of the parties involved, and outline the options for gentle integration of PV in the heritage zones. The framework will transparently inform the general public of the conditions applied in the assessment of the PV installation proposals, reduce the administrative burden on the authorities arising from the foreseeable failure to meet their conditions and requirements, increase the success rate of applications, ensure gentle architectural and structural intervention, and optimize the installations to meet the needs of investors and society.