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Description
Mitigating environmental noise from transport infrastructure remains a major challenge in densely populated areas. At the same time, the transition towards low-carbon energy systems requires large-scale deployment of solar photovoltaics (PV). In this context, Photovoltaic Noise Barriers (PVNBs) offer a multifunctional solution combining noise mitigation and renewable electricity generation within existing infrastructure corridors.This paper presents the development and assessment of innovative PVNB concepts within the European projects SEAMLESS and INCREASE. Both projects investigate the integration of photovoltaic modules into acoustic barriers through different design approaches. SEAMLESS focuses on optimizing conventional PV noise barriers, balancing acoustic performance, structural behavior, and energy yield. In contrast, INCREASE explores micro-perforated panel (MPP) solutions to enhance broadband sound absorption and reduce reflections associated with rigid PV surfaces.A multidisciplinary design methodology was adopted, combining acoustic, mechanical, and photovoltaic requirements. FEM simulations were used to optimize the proposed designs and assess the acoustic performance of the developed concepts. In addition, a full-scale SEAMLESS prototype was experimentally validated through in situ reflection and transmission measurements in a free-field environment using the Adrienne method. The results confirm the feasibility and potential of PVNBs as sustainable solutions for transportation noise mitigation while simultaneously contributing to renewable energy generation.