Spain authorizes 29.3 MW energy storage in Q2 2025, with 523.8 MW enter planning stages
Energy storage emerged as a notable component of Spain’s renewable energy expansion in the second quarter of 2025, with seven energy storage plants receiving construction authorization totaling 29.3 MW, according to data from the Renewable Energy Observatory for the Digital Economy developed by Opina 360. This storage capacity was split between 15 MW from standalone battery parks and 14.3 MW from hybrid installations.
The Observatory analyzes the evolution of renewable sources in Spain’s electrical system for projects exceeding 1 MW, excluding self-consumption installations, using publicly available information.
The storage sector showed even stronger momentum in the public consultation phase, with 19 energy storage projects entering the pipeline representing a combined 523.8 MW of installed capacity. Battery storage dominated this pipeline at 87% of total capacity, while solar-storage hybrid projects accounted for 10.3% and wind-storage hybrids made up 2.7%. However, this represented a 282.4 MW decrease compared to the same period in 2024.
Environmental impact assessments provided further positive signals for storage development, with 25 storage projects receiving favorable environmental declarations during the quarter, representing 667.4 MW of total capacity.
Solar photovoltaic dominated the authorized capacity between April and June, accounting for 84.9% of permits with 1,995 MW, far ahead of other technologies such as wind power, which secured 354.8 MW (15.1%).
A total of 137 projects received administrative construction authorization (ACC) in Spain’s second quarter of 2025, with a combined capacity of 2,350 MW. This figure represents a 941 MW decline from the previous quarter and less than half the volume granted in the same period of 2024 (4,898 MW), making it the lowest figure recorded in the past six quarters.
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