Generation

In addition, wind power has been the main source of national generation in 2021, with a 23.3% share of the generation mix, which had only occurred previously in 2013, when wind power electricity generation used to account for the 20% in the national generation structure.

Among renewables, wind power electricity generation in 2021 is still the leader with almost 50% of the total renewable energy generated in Spain, with a representation of the total renewable energy very similar to the previous year.

Annual share of wind power generation nationwide in the total generation

As for wind power generation by regions, Castilla y León is the community that has produced the most electricity from the force of the wind in 2021, with 13,255 GWh, which means 21.9% of all wind power generated in Spain. Wind power was the first technology in the generation structure of Castilla y León, contributing the 49.1% of the electricity generation mix of this region.

In 2021 Aragón was the Spanish community with the highest proportion of wind power generation nationwide in its energy mix, with 53.4%, and the second in electricity generation from this technology with 10,253 GWh.

Wind power generation nationwide in 2021

Share of wind power generation per region in relation to total wind power generation nationwide

The highest monthly wind generation in 2021 was achieved in the months of January and December, while in February there was the greatest share of generation coverage, with a weight of 29.8% of national generation. In addition, in January, February, July and August, the monthly wind power generation nationwide has reached the highest values corresponding to those months recorded to date since statistical series exist.

During 2021, the historical maximums of daily wind power generation nationwide have been exceeded on several occasions, registering on Wednesday, December 8, a new record for both wind power electricity generation with 430 GWh (value 6.5% higher than the previous historical maximum of December 13, 2019), as well as participation in the daily generation structure with a representation of 52% of the national mix.

At the hourly level, the national wind power electricity generation has also set new historical records, reaching a maximum generation of 20,640 MWh on Wednesday, December 8 between 1:00 p.m. and 4:00 p.m., and on Friday, December 10, between 3:00 a.m. and 4:00 p.m. electricity generation structure with a value of 58.5%.

Wind power generation nationwide, monthly maximum values and share in the total generation mix

The great variability offered by the wind implies that the contribution of wind power generation nationwide in the hourly coverage is subject to important oscillations; thus, during the year, there have been hours which percentage in the hourly coverage has been lower than 1%, the minimum value recorded was on March 24, between 10:00 a.m. and 11:00 a.m., as periods where almost 59% is covered, where the maximum value was recorded on December 10, between 3:00 a.m. and 4:00 a.m. The average contribution of wind power generation nationwide turned out to be higher in the period between 0:00 a.m. and 5:00 a.m., whose average share was almost 28%, a share that decreases from 10 a.m. to 3 p.m. with an average value of 18%.

Monotonic curve of share of wind power generation nationwide in coverage

The wind producible index in 2021 reached a value of 1.02, a value slightly above the average of the last ten years. Wind power is linked to a defined seasonality, with greater use between the months of January and March and less use between June and September. During this year, the highest indexes have been recorded in November and December, where values exceeded 1.2 in both cases.

Daily wind producible power compared to the historical average producible