Fernández Jiménez, AitorÁlvarez Álvarez, EduardoLópez Gallego, MarioFouz, David MateoLópez Moreira, IvánGharib-Yosry, AhmedClaus Gómez, RubénCarballo Sánchez, Rodrigo2025-12-022025-12-022021-10-15Fernández-Jiménez, A., Álvarez-Álvarez, E., López, M., Fouz, M., López, I., Gharib-Yosry, A., Claus, R., & Carballo, R. (2021). Power Performance Assessment of Vertical-Axis Tidal Turbines Using an Experimental Test Rig. Energies, 14(20), 6686. https://doi.org/10.3390/en142066861996-1073https://hdl.handle.net/10347/44178This article presents the characteristic curves of a vertical-axis hydrokinetic tidal turbine of the Darrieus subtype aimed at meeting the electricity demand of port facilities located at harbors and estuaries with low water-speed conditions. The turbine was tested in the water-current flume of the University of Santiago de Compostela for several flow conditions with different water heights and water speeds. Blockage conditions were tested by examining the results from two groups of tests: with and without an accelerator device that restricts the flow around the rotor. The tip speed ratio and the power coefficient were used to characterize the performance of the turbine for each test. Finally, the results for open-field conditions were obtained by applying empirical expressions, which allowed us to assess the performance of the device in estuaries and harbors with known water-flow regimeseng© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/Marine renewable energyTidal energyLaboratory testsTidal turbinejournal article10.3390/en14206686open access