RT Journal Article T1 Experimental Outdoor Public Lighting Installation Powered by a Hydraulic Turbine Installed in the Municipal Water Supply Network A1 Ocaña Miguel, Antonio A1 Gago-Calderón, Alfonso A1 Andrés-Díaz, José Ramón K1 Alumbrado público AB Sustainability and energy prices make the use of energy obtained from renewable sources on an urban scale and for isolated local facilities necessary for municipal authorities. Moreover, when the demand of energy is at night, as for street lighting installations, the use of accumulative systems is necessary, which means a major drawback due to a short lifetime expectancy and high cost. The use of batteries can require more than 70% of the budget of these lighting systems and has a critical impact in the project. The problem to solve is finding different renewable energy sources that can produce energy throughout the day, especially during the night, at the same time at which it is consumed. As one of the competences of municipal authorities is water supply networks, this paper analyzes the use of energy recovery turbines within these installations as an alternative to photovoltaic generators. To study the viability and effectiveness of this alternative, the water flows available in the network of a medium-size municipality were monitored and analyzed in depth to assess the amount of recoverable energy. In addition, an energy recovery turbine (ERT) station was set up, installing a bypass around one of the pressure-reducing valves (PRV) of the installation where energy is dissipated without practical use. The results obtained imply that the system proposed has economical and technical viability, is reliable and guarantees full service in all the seasons’ conditions. Moreover, the needs of the energy storage capacity are much lower (~8%) than with solar panels. PB MDPI YR 2022 FD 2022-02-26 LK https://hdl.handle.net/10630/35880 UL https://hdl.handle.net/10630/35880 LA eng NO Ocana-Miguel, A.; Gago-Calderon, A.; Andres-Diaz, J.R. Experimental Outdoor Public Lighting Installation Powered by a Hydraulic Turbine Installed in the Municipal Water Supply Network. Water 2022, 14, 710. https://doi.org/10.3390/w14050710 NO Esta investigación ha sido financiada por la Universidad de Málaga, a través de su Plan Propio de Investigación y Transferencia: E3. Ayudas para prototipos o pruebas de concepto. Número de subvención E3/03/16. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 19 ene 2026