118808 20250926150151.0 doi 10.24084/repqj20.250 sideral 130002 ART-2022-130002 eng Tejero, J. A. Universidad de Zaragoza (orcid)0000-0002-3959-6580 Firm capacity of PV+STG systems 2022 Access copy available to the general public Unrestricted The security of supply becomes a key variable of the electrical system. Due to the discontinuity of solar irradiance, PV generators are essentially not dispatchable and they operate only when there is solar resource but cannot ensure their availability when the energy is needed, so PV systems are considered having a null capacity credit. Energy storage is considered a key for the power sector and its sustainability and different options need to be exploited. The objective of this paper is analyse the optimum size of the required battery, its relations with the peak power of the generation system and the optimum operation setpoint of a PV+STG system for providing firm capacity. © 2022, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved. info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 0.148 2022 Electrical and Electronic Engineering 2022 Q4 Renewable Energy, Sustainability and the Environment 2022 Q4 Energy Engineering and Power Technology 2022 Q4 0.6 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Bayod-Rújula, A. A. Universidad de Zaragoza (orcid)0000-0002-1704-1584 Haro Larrodé, M. Universidad de Zaragoza (orcid)0000-0003-0473-9104 5009 535 Universidad de Zaragoza Dpto. Ingeniería Eléctrica Área Ingeniería Eléctrica 20 (2022), 155-160 Renewable energy power qual. j. Renewable Energy and Power Quality Journal 2172-038X 1504371 http://zaguan.unizar.es/record/118808/files/texto_completo.pdf Versión publicada 2609222 http://zaguan.unizar.es/record/118808/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:118808 articulos driver 2025-09-26-14:59:35 ARTICLE