Generation

In 2025, wind power was once again, for the third consecutive year and the fifth time in history, the leading source of national generation, with a 21.6% share in the generation mix. Additionally, wind power was the technology with the highest share in the national electricity generation structure for five months in 2025. The maximum share for the year was recorded in November, with 31.8%. 

If self-consumption is included, wind power becomes the second source of national electricity generation, with a share of 20.6%, after solar photovoltaic (21.3%).

Annual share of wind power generation in total generation

In terms of wind power generation by autonomous communities, Castilla y León continues to be the community that produced the most electricity from wind energy in 2025, with 13,279 GWh, which represents 22.6% of all wind power generated in Spain.

In 2025, Aragón was the second Spanish autonomous community in terms of wind power electricity generation with 11,068 GWh, 18.8% of wind power generation nationwide. It also ranks first in terms of the highest share of wind power electricity generation in its energy mix with 49.5%.

Navarra was the second Spanish autonomous community with the highest share of wind power generation in its energy mix, with 46.5% of this region's electricity generation mix.

Wind power generation in 2025

Wind power generation in each autonomous community as a proportion of wind power generation nationwide

In the national electricity system, the highest monthly wind power generation in 2025 was achieved in January, while November registered the highest proportion in the coverage of generation, with a share of 31.8% of national generation. In addition, January and July recorded the highest monthly wind electricity generation to date since statistical records began for each of these months.
In Islas Canarias, an hourly maximum of 503 MWh was recorded on 29 November between 18 and 19 h.

The high variability of the wind means that the contribution of wind power generation to hourly coverage fluctuates considerably. Therefore, during the year there were hours with a percentage of hourly coverage of less than 1%, with the minimum value occurring on 29 December between 14 and 15 hours. However, national wind power electricity generation also reached high values, with the highest annual share of the electricity generation structure occurring on Wednesday, 23 October, between 3 and 4 hours, with 61.9%.

The wind producible index in 2025 reached a value of 0.88, the lowest figure since records began in 2013. During this year, the highest rates were recorded in November, January, and July, with values amounting to 1.13, 1.07, and 1.03, respectively. In February, the lowest monthly value on record was registered (0.57), following the previous low recorded in December 2016 (0.56).

Wind power generation, monthly peaks, and share of total generation

The high variability of the wind means that the contribution of wind power generation to hourly coverage fluctuates considerably. Therefore, during the year there were hours with a percentage of hourly coverage of less than 1%, with the minimum value occurring on 5 February between 14 and 15 hours. However, national wind power electricity generation also reached high values, with the highest annual share of the electricity generation structure occurring on Wednesday, 22 November, between 0 and 1 hours, with 59.7%.

Monotonic curve of wind power generation share of coverage

The wind producible index in 2024 reached a value of 0.94, lower than the average of the last ten years. During this year, the highest rates were recorded in September and October, with values amounting to 1.21 and 1.14, respectively.

Daily producible wind energy compared to historical average producible wind power