000118808 001__ 118808 000118808 005__ 20250926150151.0 000118808 0247_ $$2doi$$a10.24084/repqj20.250 000118808 0248_ $$2sideral$$a130002 000118808 037__ $$aART-2022-130002 000118808 041__ $$aeng 000118808 100__ $$0(orcid)0000-0002-3959-6580$$aTejero, J. A.$$uUniversidad de Zaragoza 000118808 245__ $$aFirm capacity of PV+STG systems 000118808 260__ $$c2022 000118808 5060_ $$aAccess copy available to the general public$$fUnrestricted 000118808 5203_ $$aThe 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. 000118808 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000118808 592__ $$a0.148$$b2022 000118808 593__ $$aElectrical and Electronic Engineering$$c2022$$dQ4 000118808 593__ $$aRenewable Energy, Sustainability and the Environment$$c2022$$dQ4 000118808 593__ $$aEnergy Engineering and Power Technology$$c2022$$dQ4 000118808 594__ $$a0.6$$b2022 000118808 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000118808 700__ $$0(orcid)0000-0002-1704-1584$$aBayod-Rújula, A. A.$$uUniversidad de Zaragoza 000118808 700__ $$0(orcid)0000-0003-0473-9104$$aHaro Larrodé, M.$$uUniversidad de Zaragoza 000118808 7102_ $$15009$$2535$$aUniversidad de Zaragoza$$bDpto. Ingeniería Eléctrica$$cÁrea Ingeniería Eléctrica 000118808 773__ $$g20 (2022), 155-160$$pRenewable energy power qual. j.$$tRenewable Energy and Power Quality Journal$$x2172-038X 000118808 8564_ $$s1504371$$uhttps://zaguan.unizar.es/record/118808/files/texto_completo.pdf$$yVersión publicada 000118808 8564_ $$s2609222$$uhttps://zaguan.unizar.es/record/118808/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000118808 909CO $$ooai:zaguan.unizar.es:118808$$particulos$$pdriver 000118808 951__ $$a2025-09-26-14:59:35 000118808 980__ $$aARTICLE