INSTALLED CAPACITY 2025

Installed capacity

Information based on provisional data as of January 2026

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As of 31 December 2025, the Spanish electricity system's installed capacity, including both the peninsular and non-peninsular systems, as well as generation and storage capacity, has reached an all-time high with an installed power capacity of 142,558 MW, a 7.3% increase compared to the previous year. If we take into account self-consumption installations, which are not reflected in the available data, total installed capacity in Spain rises to 150,809 MW.

Installed capacity from renewable energy generation in the Spanish electricity system increased by 6.3 GW in 2022, by 6.7 GW in 2023, and by 7.9 GW in 2024. In 2025, installed capacity from renewable energy generation experienced the highest increase recorded to date, with an additional 10 GW, bringing the total installed capacity from renewable energy generation sources in the Spanish electricity system to 95.6 GW. The integration of this new renewable capacity, mostly wind and power solar photovoltaic, represented a significant boost to the energy transition and the fulfilment of the integration roadmap set out in Spain’s National Energy and Climate Plan (NECP), with a 2030 deadline.

As for the Spanish electricity system’s installed storage capacity in 2025, it stands at 3,427 MW, of which 3,331 MW correspond to pumped-storage and 96 MW to batteries, nearly quadrupling the capacity they had in 2024.

The power generation fleet of the peninsular electricity system is also becoming increasingly cleaner, as there was an 11.7% increase in installed capacity from renewable energy generation in 2025 compared to the previous year.

Over the course of 2025, installed solar photovoltaic power capacity experienced the greatest increase within the peninsular electricity system, adding almost 9,000 MW to the power generation fleet. Solar photovoltaic remained the leading technology in the peninsular electricity system in terms of installed capacity at 40,952 MW, surpassing wind power, which accounted for 30.0% of the total installed capacity in the peninsular system (compared to 25.3% in 2024).

The increase in installed wind power capacity in 2025 was 3.5%, once again making it the second-largest generation source in the ranking of installed capacity in the peninsular system. With a total of 32,593 MW, wind power represents 23.8% of the total installed capacity in the peninsular electricity system.

In contrast, non-renewable generation capacity on the Spanish Peninsula decreased by 0.9% in 2025, mainly due to the modification of the conventional Aboño 2 generator, which removed its coal-burning capacity in favour of gas, as well as the reduction in installed capacity for cogeneration and non-renewable waste.
In the non-peninsular systems, there was an increase of 1.3% in installed capacity by the end of 2025. This increase is due to the 4.5% growth in installed wind power capacity, the 8.6% increase in solar photovoltaic and the 12.4% uptake in other renewables compared to 2024.

The generation capability of the Islas Baleares electricity system experienced a 0.6% increase in installed power capacity in 2025, due to the 6.8% increase in installed renewable power capacity. At the end of 2025, installed renewable power capacity accounted for 18.7% of the generation capability in Islas Baleares. Installed solar photovoltaic power capacity in Islas Baleares increased to 376 MW from 351 MW in 2024, representing an increase of 16.6%.

In Islas Canarias, the installed capacity from renewable energy generation rose from 971 MW to 1,031 MW over the last year, representing an 6.2% increase. This growth means that installed capacity from renewable sources in Islas Canarias accounted for 30.0% of the total Islas Canarias power generation fleet by the end of 2025. Specifically, the increase in installed capacity was due to a rise in wind power, with a growth of 4.5%, and solar photovoltaic with 10.4%.

Installed solar photovoltaic capacity in Islas Canarias grew from 301 MW in 2024 to 332 MW in 2025, keeping its position as the sixth largest source of generation in the Islas Canarias mix. As of 31 December 2025, solar photovoltaic capacity represents 9.7% of the total installed capacity in the island system (8.9% in 2024).

Installed power capacity at December 31, 2025

MW - %

NOTES

Pumped storage: Including pure pumped storage.

Wind power: Includes onshore and offshore wind power.

Other renewables: Include biogas, biomass, marine hydro, and geothermal.

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Power variations in conventional generator sets

Groups	Type	Date	Power (MW)
Aboño 2	Coal	jul.-25	562
Total peninsular decommissioning			562
Aboño 2	Steam turbine	jul.-25	562
Total altas peninsular			562
Peninsular balance			0

Evolution of the structure of installed power capacity

Electricity system

Magnitudes MW %

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Evolution of installed capacity from renewable energy generation

Electricity system

Magnitudes MW %

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Evolution of installed capacity with or without CO2 eq. emissions

Electricity system

Magnitudes MW %

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The most relevant aspects of the installed capacity by autonomous communities in 2025 include:

Andalucía is the second region in terms of installed renewable capacity, with 16,444 MW (67.9% of its total generation fleet). In 2025, photovoltaic capacity saw a notable increase of 2,803 MW, alongside 49 MW in wind power. In 2025, Andalucía also has the largest installed solar photovoltaic capacity in the country, with 10,663 MW, which represents 25.6% of the national total.
In Aragón, installed capacity from renewable energy generation grew by 10.1% with the commissioning of 659 MW of photovoltaic energy and 357 MW of wind power. It is the second region with the highest installed wind power capacity (6,061 MW), representing 44.1% of the region’s total installed capacity.
Cantabria has 795 MW of installed capacity, with pumped storage technology leading the energy mix at 45.4% of the total. Renewable technologies account for 19.7% of the region's capacity.
In Castilla–La Mancha, installed capacity from renewable energy generation increased by 9.4% in 2025. This renewable growth in 2025 is due to the installation of 1,275 MW of solar photovoltaic capacity, which placed the region as the second-highest in terms of installed solar photovoltaic MW, reaching a total of 8,618 MW and accounting for 50.5% of the regional generation mix. It ranks second in renewable energy generation capacity share in Spain, with 86%. This community also has the highest installed battery storage capacity in the country, with 63 MW.
Castilla y León remains the region with the highest renewable capacity, totalling 17,589 MW, 97.2% of its total capacity and 18.4% of the national renewable total. In 2025, it was the autonomous community that installed the most new capacity, adding 2,460 MW of solar photovoltaic and 458 MW of wind power. It also leads the country in installed wind capacity (7,751 MW).
At the end of 2025, renewable energies in Cataluña accounted for 32.2% of the installed capacity in the region, with a notable 16.5% increase in solar photovoltaic capacity.
In the Comunidad Valenciana, the only change in installed capacity in 2025 was an increase in solar photovoltaic installed capacity, which grew by 20.3%. By year-end, installed capacity from renewable energy generation represented 30.3% of the total. Additionally, this region has the highest storage capacity in the country, accounting for 44.1% of the national total.
Extremadura has an installed capacity of 13,864 MW, of which 85.3% comes from renewable energy generation technologies. In 2025, it added 635 MW of new solar photovoltaic capacity, reaching a total of 8,512 MW. This represents 61.4% of its total capacity and positions Extremadura as the third region with the highest installed solar photovoltaic capacity.
In Galicia, installed capacity increased by 0.6% as a result of a 1.2% rise in renewable capacity. Therefore, installed capacity from renewable energy generation represents 81.5% of the region’s total, ranking fourth in renewable energy share. Wind power remains the dominant technology, accounting for 41.7% of the total installed capacity.
Installed renewable energy generation capacity in the Islas Baleares increased by 6.8% in 2025, driven by a 30.3% rise in other renewables and a 7.1% increase in solar photovoltaic. Renewable capacity now represents 18.7% of the total installed capacity in the region.
In the Islas Canarias, renewable installed capacity increased by 6.2% thanks to the commissioning of an additional 38 MW of renewable power, 29 MW from wind power, and 31 MW of solar photovoltaic capacity. Therefore, green energies now account for 30% of Islas Canarias installed capacity.
In La Rioja, the share of renewable energy in installed capacity at the end of 2025 was 48.9%, with wind power as the leading renewable technology (32.7%), followed by solar photovoltaic (12.6%).
Comunidad de Madrid recorded a 55.7% increase in installed renewable capacity, driven by the addition of 130 MW of solar photovoltaic. In 2025, renewable technologies account for 63.6% of the region’s installed capacity.
Murcia ended 2025 with an installed capacity of 6,072 MW, a 6.7% increase compared to 2024. Of this, 41.3% corresponds to installed capacity from renewable energy generation. Solar photovoltaic capacity increased by 21.9% compared to the previous year.
In Navarra, wind power remains the leading technology in terms of installed capacity, accounting for 44.4% at the end of 2025. Throughout the year, installed wind power capacity grew by 4.2% and solar photovoltaic increased by 60.5%.
As of 31 December, País Vasco has an installed capacity of 2,961 MW, with little variation throughout the year. The region’s installed capacity from renewable energy generation represents 16.2% of the total.
In July 2025, the conventional Aboño 2 generator, located in the Principality of Asturias, was modified to remove its coal-burning capability and convert it to gas. As a result, installed coal capacity in the region decreased by 45%.