Across Europe, historic buildings are undergoing a quiet transformation. As the continent pushes towards climate neutrality, Building-Integrated Photovoltaics (BIPV) are emerging as a discreet yet powerful tool in the renovation of heritage architecture. Unlike traditional solar panels, BIPV systems are designed to blend seamlessly into roofs, façades, and skylights—preserving the visual integrity of centuries-old structures while generating clean energy.

A recent study reviewed 41 case studies, most of them in Europe, where BIPV has been successfully applied to listed and traditional buildings. The majority of these interventions were roof-based, often using coloured or textured modules to mimic original materials like terracotta tiles or slate. Switzerland, Italy, and Spain lead the way, supported by favourable legislation and a strong manufacturing base for solar technologies.

Despite their promise, BIPV systems face several barriers. High initial costs, limited public awareness, and complex approval processes—especially in protected areas—have slowed adoption. Social resistance, often rooted in misconceptions about aesthetics, remains a significant hurdle. Yet, the study shows that with careful design and collaboration between architects, engineers, and heritage authorities, these systems can enhance both energy performance and cultural value.

The integration of BIPV into historic buildings is not merely a technical challenge—it is a cultural opportunity. By embracing innovation that respects the past, Europe is demonstrating how sustainability and heritage can coexist. As climate targets grow more urgent, such projects offer a compelling model for future renovations worldwide.