Photovoltaic systems in historic centers: what’s changing?
In recent months, the Italian regulatory framework for photovoltaic systems in historic centers has changed significantly. With the entry into force of two legislative decrees—Legislative Decree 175/2025, which defines the areas “suitable” for the installation of solar systems, and Legislative Decree 178/2025, which updates the Consolidated Law on Renewable Energy—a regulation has been introduced that makes it easier to install photovoltaic panels even on historic buildings, without being subject to general bans under municipal regulations.
What’s changing in practice
According to the new rules, any building and its roof can be considered “suitable areas” for the installation of photovoltaic systems, provided the panels are integrated into the roof slope without altering its shape or size. This also applies to urban areas classified as historic centers (Zone A). This means that local regulations that previously generally prohibited panels in historic contexts are no longer applicable in most cases.
The Role of the Superintendency
Another important aspect of the new legislation concerns the landscape opinion. Until recently, the Superintendency had a binding role on installations in historic centers and could block permits. With the changes introduced, that opinion remains mandatory, but it is no longer binding: the municipal administration can proceed with the process even without approval from the landscape authority, except in cases of direct restrictions on individual assets of particular value.
Exceptions and Limitations
It’s important to note that not everything is automatically permitted: properties with specific restrictions or subject to particular landscape protections remain subject to specific rules and do not automatically fall under the simplified regimes.
Essentially, the new provisions aim to encourage the spread of rooftop solar power, including in historic city centers, thus contributing to national and European energy transition goals, while maintaining—where necessary—protection tools for assets of historical and landscape value.
Source: QualEnergia.it