Light without consumption. Design for regenerative lighting in natural ecosystems

The concept of public lighting is evolving from a mere technical function to a strategic tool for enhancing sustainability and the landscape. This study presents the case of the Andolaccio area, near Lake Bilancino, as an experimental laboratory for the application of regenerative lighting solutions based on photoluminescent materials and zero energy consumption strategies. The methodological approach combines laboratory testing, in situ prototyping and analysis of the ecological context, with a particular focus on reducing light pollution and preserving biodiversity. The results demonstrate that photoluminescence ensures diffuse visibility and orientation in public spaces, reducing environmental impact and improving the sensory perception of the night-time landscape. The treated surfaces showed durability, resistance to atmospheric agents and sufficient light emission in the hours after sunset, although solar radiation conditions influenced this. The project confirms the validity of passive lighting as a sustainable alternative to conventional lighting, suggesting potential applications in urban and natural settings. The article also proposes replicable guidelines, contributing to the debate on smart lighting ecology and the role of design as a tool for redefining the relationship between light, the environment, and the community.