Drawing from both academic and industry publications, this thesis presents the state of the art of energy storage technologies suitable for long-duration applications and performs a technoeconomic analysis of two technologies (lithium-ion and flow battery) applied to two case. . Drawing from both academic and industry publications, this thesis presents the state of the art of energy storage technologies suitable for long-duration applications and performs a technoeconomic analysis of two technologies (lithium-ion and flow battery) applied to two case. . With Mexico's president-elect having announced an intent to attract renewables investment, energy storage was the subject of much discussion at the Intersolar Mexico trade show. Can photovoltaic energy be stored in Mexico? In this regard,experts estimate that the technology already exists in Mexico. . Mexico is seeing a surge of large-scale solar and battery storage proposals across multiple states following an October decree that sets clearer rules for private energy investments. According to data presented by the Mexican Ministry of Energy in 2020, Mexico had an installed. . and general is licensed with CC BY-ND 2. To view a copy of this license, visit http featured herein are provided “as is”. Neither the authors, the National Institute. . The collaboration was carried out under the framework of the “Large-scale Solar Energy Program in Mexico (DKTI Solar)” of the GIZ, which is implemented on behalf of the German Federal Ministry of Economic Cooperation and Development (BMZ).