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Long-Term Monitoring Campaign of LED Street Lighting Systems: Focus on Photometric Performances, Maintenance and Energy Savings

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  • Lodovica Valetti

    (TEBE Research Group, Department of Energy “Galileo Ferraris”, Politecnico di Torino, 10129 Turin, Italy)

  • Gabriele Piccablotto

    (Analysis and Modelling of Environmental System Laboratory (LAMSA), Department of Architecture and Design, Politecnico di Torino, 10129 Turin, Italy)

  • Rossella Taraglio

    (Analysis and Modelling of Environmental System Laboratory (LAMSA), Department of Architecture and Design, Politecnico di Torino, 10129 Turin, Italy)

  • Anna Pellegrino

    (TEBE Research Group, Department of Energy “Galileo Ferraris”, Politecnico di Torino, 10129 Turin, Italy)

Abstract

The renovation of public lighting installations by replacing the traditional systems with LED technologies and introducing smart lighting control systems is a policy widely adopted to contain energy consumption and expenditure. Additionally, the long-term monitoring of the depreciation of the new lighting systems is a crucial issue. The aim of this study is to report the results of in-field measurements of new LED lighting systems in the city of Turin (Italy). A method was defined to assess: (i) energy performance (through data from the remote-control system); (ii) photometric performance (through in-field measurement campaigns); and (iii) depreciation of the photometric performance over a period of approximately 5 years. Results demonstrated that the new LED systems allow us to achieve an average energy saving of 51% compared to the ex-ante condition, improving the photometric performances and compiling the standard requirements by lowering the over-illumination levels. Moreover, the measured depreciation of the LED systems over time was compared with the predicted depreciation, estimated based on the calculation method proposed in Standards BS 5489-1:2020 and ISO/CIE TS 22012:2019. The results obtained showed that the measured depreciation of the photometric performance was closer to the predicted depreciation trend according to BS 5489-1:2020 (variations between 0% and 4%), while greater variations (between 17% and 23%) emerged considering the ISO/CIE TS 22012:2019.

Suggested Citation

  • Lodovica Valetti & Gabriele Piccablotto & Rossella Taraglio & Anna Pellegrino, 2023. "Long-Term Monitoring Campaign of LED Street Lighting Systems: Focus on Photometric Performances, Maintenance and Energy Savings," Sustainability, MDPI, vol. 15(24), pages 1-32, December.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:24:p:16910-:d:1301616
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    References listed on IDEAS

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    1. Leccese, Francesco & Salvadori, Giacomo & Rocca, Michele, 2017. "Critical analysis of the energy performance indicators for road lighting systems in historical towns of central Italy," Energy, Elsevier, vol. 138(C), pages 616-628.
    2. Kostic, Miomir & Djokic, Lidija, 2009. "Recommendations for energy efficient and visually acceptable street lighting," Energy, Elsevier, vol. 34(10), pages 1565-1572.
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    1. Valeriu-Sebastian Hudișteanu & Ionuț Nica & Marina Verdeș & Iuliana Hudișteanu & Nelu-Cristian Cherecheș & Florin-Emilian Țurcanu & Iulian Gherasim & Catalin-Daniel Galatanu, 2025. "Technical and Economic Analysis of Sustainable Photovoltaic Systems for Street Lighting," Sustainability, MDPI, vol. 17(16), pages 1-35, August.

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