en.Wedoany.com Reported - Spanish utility company Iberdrola commissioned the country's largest battery energy storage system to date in June 2026, integrating a 58 MW / 120 MWh facility into the Campo Arañuelo solar complex in Cáceres. The project consists of two lithium-ion battery modules directly connected to the existing on-site solar plants, setting a new benchmark for grid-scale energy storage in Spain.

The Campo Arañuelo facility is located in Cáceres, in the Extremadura region. Each of the two LFP lithium-ion battery modules has a capacity of approximately 60 MWh, totaling 120 MWh, and is connected to the Campo Arañuelo I and II solar plants respectively. The stored energy can flow directly from generation to the grid without leaving the complex. The core purpose of the project is to store solar energy when generation exceeds immediate grid demand and release it during peak consumption, bridging the supply-demand mismatch caused by the intermittency of solar power and electricity load.

Iberdrola views battery storage as a key component in electrification and renewable energy integration. The company already operates approximately 200 MW of battery storage capacity across Spain. With the commissioning of this project, Iberdrola's global battery storage capacity reached 683 MW by the end of the first quarter of 2026, a 157.6% increase compared to the same period in 2025, reflecting its rapid expansion in this business segment.

In Australia, Iberdrola commissioned the 65 MW Smithfield battery project in Sydney in early 2026 and secured a contract from the New South Wales government for the 100 MW Kingswood project. A 180 MW battery project in Queensland, as part of the Broadsound integrated development, is expected to begin operations in July 2026. In Portugal, Iberdrola has initiated battery installations at the Alcochete I and Algeruz II solar plants in the Setúbal district, collectively providing 180 MWh of storage capacity and 45 MW of output capacity. In Poland, the company received €44 million in funding in January 2026 from the Polish National Fund for Environmental Protection and Water Management for three battery projects with a total capacity of 160 MW.

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