Iberdrola España has inaugurated Spain’s largest energy-storage battery, a facility linked to the Campo Arañuelo I photovoltaic plant and Campo Arañuelo II photovoltaic plant that provides 58 MW of power and 120 MWh of storage capacity. Located in the municipality of Belvís de Monroy, the installation represents a significant step forward in the company’s strategy to enhance energy storage, support new demand requiring firm capacity and accelerate the electrification of the Spanish economy, as highlighted by CEO Mario Ruiz-Tagle.
The project consists of two LFP lithium-ion battery modules of roughly 60 MWh each, integrated with the existing solar plants so the site can store excess photovoltaic production and supply it to the system during periods of higher demand—an increasingly essential capability as renewable penetration continues to expand.
The inauguration was attended by regional and national representatives, including the Regional Minister of Industry, Energy, Science and Territory of Extremadura, Mercedes Morán; the Government Delegate in the region, José Luis Quintana; and Julio Castro, CEO of Iberdrola Energía Sostenible España, alongside mayors and local officials.
Ruiz-Tagle underscored that projects like Campo Arañuelo are pioneering efforts within the Spanish energy sector and demonstrate how electrification can progress at a steady and reliable pace. He also noted that the company has long been committed to energy storage and currently operates the vast majority of the battery storage capacity in Spain, with nearly 200 MW in service.
Mercedes Morán emphasized that this new installation constitutes a top-tier investment for Extremadura, reinforcing its position as an emerging energy hub that brings together generation capacity, technological innovation and system stability. She stressed that energy storage is crucial for unlocking the region’s exceptional photovoltaic potential and ensuring that the energy transition translates into industrial development, employment and new opportunities for local communities.
The project received support from the Institute for Energy Diversification and Saving (IDAE) through its grant program for innovative storage solutions paired with renewable facilities under the PERTE ERHA framework. With the commissioning of this new battery system, Iberdrola España strengthens Extremadura’s standing as a leader in renewable innovation and storage.
The Campo Arañuelo complex was already notable in 2021, when the Arañuelo III plant became the first photovoltaic facility in Spain to integrate an energy-storage battery, a 3 MW / 9 MWh installation that marked an early milestone in the country’s shift toward more flexible and resilient renewable infrastructure.
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