Zózimo, RicardoGuerreiro, Afonso Manuel Catarino2025-02-072024-06-212024-05-17http://hdl.handle.net/10362/178579This thesis explores the viability of investing in autonomous energy storage systems in Portugal. With the European Union's commitment to greener energy solutions and Portugal's aims to be carbon neutral by 2050, there is a growing need for systems that ensure grid stability while integrating renewable energy sources. This study analyzes the potential of energy storage systems to provide crucial flexibility services to grid operators like REN and E-REDES. By examining market trends, regulatory frameworks, and economic factors, this research provides insights into the opportunities and challenges associated with developing a sustainable energy storage infrastructure in Portugal.engEnergy storageGrid stabilityRenewable energyPortugalAutonomous systemsFlexibility servicesSustainabilityEuropean UnionMarket analysisRegulatoryFrameworkmaster thesis203725468