We are the Spanish TSO since 1985 
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Discover what Red Eléctrica is, what we do, and why we are the backbone of the electricity system in Spain and the ecological transition. 
We are the national electricity system operator
The electrical system
Discover the elements and special features that make up the national electricity system
Electricity Control Centres
Learn how the brain of the electrical system works, 24 hours a day, 365 days a year
We develop and maintain the electricity transmission grid to ensure a high-quality power supply for the entire community
Our infraestructures
We develop and maintain the grid infrastructures necessary to transport high-voltage electricity.
Technologies
Technological innovation is key to the development of an increasingly efficient, flexible, intelligent and sustainable transmission grid.
We sustainably manage the transmission grid
Sustainability Report 2025
We are the backbone of the ecological transition
Storage
Key elements of system flexibility
Interconnections
Essential tools for achieving the EU energy targets
We provide data on the Spanish electricity system
About self-consumption information
Data in the sections on Generation, Demand, Storage, Electricity Balance and European Lanscape do not include the estimated energy generated by self-consumption facilities, but does incorporate the energy fed into the grid by self-consumption facilities operating in surplus mode without compensation.
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Renewables now account for 66% of Spain’s installed power capacity
In 2024, solar PV recorded its best year ever: it generated 44,520 GWh, representing 17% of the country’s total electricity production
According to data from Red Eléctrica, solar photovoltaic (PV), with a total capacity of 32,043 MW, has surpassed wind power (32,007 MW) to become the technology with the highest installed capacity in Spain. Solar PV now represents nearly 25% of Spain’s total installed power capacity. 
The addition of newly commissioned MW has further strengthened the share of renewable energy technologies, which now make up 66% of Spain’s total generation capacity, highlighting the country’s progress in its energy transition.
Installed capacity in Spain as of 31 January 2025
 
Favourable weather conditions for electricity generation, combined with newly commissioned MW, made 2024 the first year solar PV ranked among the top three technologies in Spain’s power generation mix. Solar PV generated 44,520 GWh in 2024 —the highest annual output in its history—capturing a 17% share of total electricity production. 
Furthermore, in January 2025, solar PV accounted for 9.5% of total monthly electricity generation, producing 2,292 GWh —an 18.6% increase over January of the previous year. 
 
 
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