GENERATION 2025
Renewable electricity generation
Information based on provisional data as of January 2026
In 2025, renewable energy once again set a new record for annual generation.
Renewable electricity generation in the Spanish electricity system increased by 1.3% in 2025 compared to the previous year, setting an all-time high of 150,988 GWh. The share of electricity generation from renewable energies in the national mix was once again the majority share for the third time in history, with a share of 55.5% (56.8% in 2024). It was a year marked by significant contributions from solar photovoltaic, which set new records both in electricity generation—reaching 50,188 GWh—and in its share of the national mix, at 18.4%.
If we take into account the estimated energy generated by self-consumption installations, which are not reflected in the available data, the total renewable energy generation figure in Spain amounts to 161,629 GWh, and the national share of renewables increases by 1.1 percentage points to 56.6%.
To enable the operation of an electricity system with such a high penetration of renewable energies under safe conditions, the control and supervision work carried out by Red Eléctrica de España's Renewable Energy Control Centre (CECRE) is essential.
The work of CECRE has made it possible for the contribution of renewable energies to peninsular electricity generation to reach an electricity generation share of 57.5% in 2025, 1.4 percentage points lower than the historical maximum recorded in 2024, when renewables accounted for 59.0% of the peninsular energy mix. Despite the slightly lower share of renewable energy generation in 2025, solar photovoltaic electricity generation increased by 12.7%, and other renewables grew by 5.5% compared to the previous year as a consequence of weather conditions and the increase in installed capacity in the peninsular system.
In March, as well as between July and September 2025, monthly renewable energy generation on the Peninsula reached its highest recorded levels to date, coinciding with an increase in wind power and solar photovoltaic electricity generation. The highest increases in renewable energy took place during the third and fourth quarters of the year, with the highest growth occurring in November, with a value of 22.8%. March 2025 was the most renewable month in history, with electricity generation reaching 14,375 GWh.
Finally, Thursday, 20 March marked the highest daily renewable electricity generation on record, reaching 582,127 MWh, which accounted for 73.3% of the Peninsula’s daily generation.
New renewable electricity generation maximums in the electricity systems of the Islas Baleares and Islas Canarias
In the electricity system of the Islas Baleares, annual electricity generation from renewable technologies amounted to 649 GWh in 2025, 1% lower than renewable electricity generation in the previous year. 13.6% of the energy production in the Islas Baleares electricity system has been produced from renewable sources.
In June 2025, renewable energy generation in the Islas Baleares reached a new monthly record, totalling 77,332 MWh. Daily electricity generation in the Islas Baleares electricity system also surpassed the historical record for renewable participation in the regional mix, reaching a share of 25.3% on Sunday, 30 March. This is 1.7 percentage points higher than the previous record set on Sunday, 21 April 2024.
2025 has also been a year of records in renewable electricity generation for the Islas Canarias electricity system. Specifically, renewable energy generation in the Islas Canarias was 1.9% higher in 2025 than in 2024, reaching an all-time annual high of 1,885 GWh. The share of this renewable energy generation in the Islas Canarias’ electricity mix also beat the historical record, reaching a value of 20.9%.
Annual evolution of renewable energy generation
Renewable electricity generation structure by power station type and by autonomous communities
Daily electricity generation in the Balearic Islands' electricity system also exceeded the previous all-time high for renewable energy generation, achieving a record 2,760 MWh on 5 June 2024, as well as for renewable share in the Balearic Islands' mix, with 23.6% on Sunday 21 April.
Maximum renewable energy generation
Winter: January-May / October-December.
Summer: June-September.
In 2025, hydropower stations on the Peninsula decreased their electricity generation
Hydroelectric power generation on the Peninsula in 2025 reached 33,687 GWh, marking a 3.6% decrease compared to 2024. This technology's contribution to the peninsular generation structure was 13.1%, 1 percentage point lower than in the mix of the previous year. In 2025, the total generated by hydroelectric power stations placed this technology as the fifth largest source of generation in the peninsular total.
The comparative graph of peninsular hydroelectric power generation 2024-2025 shows how, during 2025, hydroelectric power generation was higher than during 2024 for practically the whole year, except in the months of February, May, and December. The month in which hydroelectric power generation recorded the greatest increase was February, with a growth of 35.9%. In contrast, the largest reduction in monthly hydroelectric power generation was registered in October, when hydroelectric power plants generated 39.3% less than in the same month in 2024.
Monthly hydroelectric power generation in 2024-2025 compared to average generation
Historical average hydroelectric power generation: Average monthly hydroelectric power generation over the last 20 years.
Maximum and minimum daily hydro coverage
In 2025, the producible hydroelectric index (maximum amount of electricity that could have been generated with the hydroelectric power contributions registered) reached a value of 33,714 GWh, 4.2% lower than that recorded in 2024, and 18% higher than the historical annual average value. Therefore, it can be concluded that 2025 has been a wet year as a whole, since the producible hydroelectric index, defined as the quotient between producible energy and average producible energy, reached a value of 1.18.
Daily producible hydraulic energy during 2025 compared to the historical average producible
Hydroelectric reserves were above the statistical average in 2025
The year 2025 was a wet year overall in terms of precipitation. It started with a wet January followed by a dry February, with average precipitation values reaching 136% and 66% of the normal value for the month, respectively. Spring was overall wet in terms of precipitation, while summer was very dry, with values reaching approximately 81% of the normal level for these quarters in the 1991-2020 reference period. Autumn was dry, although November was within normal ranges and December was wet.
Throughout 2025, hydroelectric reserves remained above the statistical average (calculated based on the last twenty years). Reserves began the year above 50% of total capacity and continued to rise, reaching their annual peak of 83.4% in May, the highest level recorded since data have been available starting in January 1990. In the following months, hydroelectric reserves started to decline, and from September onwards, they stabilised around 50%. By 31 December 2025, Spain’s hydroelectric reservoirs held 52.5% of their total capacity, 0.2 percentage points higher than the previous year.
Annual evolution of total, annual, and hyper-annual hydroelectric reserves
Statistical maximum and minimum: Average of the maximum and minimum values of the last 20 years.
Installed hydroelectric power capacity and reserves as of 31 December by peninsular hydrographic zone
In 2025, for the third consecutive year, wind power was the leading technology in the national generation mix
In 2025, the national generation fleet added over 1,100 MW of new wind power capacity. This increase in installed capacity contributed to wind power generation nationwide once again leading the energy mix for the third consecutive year, with 58,801 GWh and a share of 21.6%
In the peninsular electricity system, annual wind power electricity generation in 2025 reached 57,411 GWh, a 3.5% decrease compared to the previous year. The largest decline occurred in February, when wind generation fell by 46.9% compared to the same month in 2024. Conversely, in January, March, July, November, and December, wind power generation exceeded 2024 levels. Monthly wind power electricity generation in January and July reached the highest values recorded to date for those months.
The high variability in wind power generation can be observed in the graph of maximum and minimum daily wind power coverage. Throughout 2025, daily electricity generation from wind power accounted for between a minimum of 3.2% of the generation mix on 29 December and a maximum of 52.9% on 13 November.
Maximum and minimum daily wind power coverage
Wind power was the technology with the highest share in the peninsular electricity generation structure for five months in 2025, namely in January (32.3%), March (29.4%), April (22.2%), November (32.9%), and December (24.1%). In the total for the year 2025, wind power generation once again emerged as the leading technology in the peninsular energy mix, accounting for 22.3% of the total. This marks the third consecutive year and the fifth time in history that wind power has taken the top spot, following similar achievements in 2013 with a share of 21.2%, in 2021 with 24.2%, in 2023 with 24.6%, and in 2024 with 23.9%.
During 2025, solar photovoltaic electricity generation once again reached historic production highs
Over the course of 2025, installed solar photovoltaic capacity was the technology that experienced the greatest increase within the Spanish electricity system, adding over 8,800 MW to the power generation fleet.
This momentum allowed solar photovoltaic electricity generation in 2025 to register maximums in the various electricity systems within the national territory. During 2025, solar photovoltaic generation in the peninsular electricity system increased by 12.7%, reaching 49,220 GWh, which represents a new annual electricity generation record. The annual participation of this technology in the peninsular mix also registered a maximum value, with a share of 19.1%, which means a growth of 1.5 percentage points compared to 2024, therefore remaining in third position in the peninsular generation structure for the second consecutive year, ahead of both hydroelectric power and combined cycle.
During 2025, except for May and December, monthly peninsular solar photovoltaic electricity generation each month was the highest recorded to date for those periods, with October reaching a 45.5% increase compared to the same month in 2024. Additionally, in June, it reached the highest share in the generation structure across the entire statistical series, with a value of 27.1%. In July, solar photovoltaic generation produced the highest monthly amount ever recorded in the peninsular electricity system, with 6,175 GWh.
On a daily level, on Friday, 6 June 2025, solar photovoltaic reached its highest share of the peninsular energy mix at 31.9%, while on Thursday, 26 June, peninsular solar photovoltaic electricity generation broke the previous record, reaching 236,033 MWh.
During the year 2024, the historical maximum of instantaneous photovoltaic generation power in the peninsular electricity system was beaten on several occasions, reaching a new historical record on Wednesday, 18 June at 13:58 hours with a value of 23,034 MWh.
And lastly, on Monday, 21 April 2025 at 13:33, a new historical maximum of solar photovoltaic generation with respect to demand was reached in the peninsular electricity system, with a value of 84.1%.
Maximum and minimum daily solar coverage
In the Islas Baleares, solar photovoltaic generation in 2025 declined slightly by 0.1% compared to the previous year and accounted for 10.6% of the islands’ annual generation mix (compared to the historic maximum of 11.3% in 2024). It therefore maintained its position as the second-largest contributor in the mix, ahead of gas turbine generation.
In June 2025, the solar photovoltaic facilities of the Islas Baleares produced the highest monthly amount of energy recorded to date, with a value of 62,733 MWh, 4.2% higher than the previous maximum, recorded on July 2024.
In addition, on Tuesday, 5 August 2025, solar photovoltaic electricity generation in Islas Baleares reached a new daily generation record of 2,265 MWh.
Solar photovoltaic electricity generation in Islas Canarias in 2025 beat its annual historical maximum, with 460,484 MWh, which represented a record share of 5.1% of the Islas Canarias mix. In August 2025, solar photovoltaic generation produced 45,970 MWh, the highest amount since the start of statistical records in 2007. In May, it reached the largest share in the generation structure, with 6.3%.
On Friday, 30 May 2025, solar photovoltaic reached its highest daily value of participation in the generation structure of the Islas Canarias, with 8.4%, and on Saturday, 26 July it registered an all-time high for daily photovoltaic electricity generation, with 1,939 MWh.
Generación eléctrica
Generación total
Generación eléctrica
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