Three Southern European Countries Set a Record For Daily Solar Power Generation
According to the latest analysis by AleaSoft Energy Forecasting, Italy, Portugal and Spain set new daily solar power generation records at the end of June 2025, marking a breakthrough in the application of photovoltaics in Southern Europe.
Spain: On June 26, daily solar power generation reached 235 GWh, an increase of 19.9% from the record of 196 GWh set in May 2024. This achievement is due to the efficient operation of centralized power stations in sunny areas such as Andalucia and Extremadura, as well as the coordinated consumption of distributed photovoltaic and energy storage systems.
Portugal: The power generation on the same day reached 30 GWh, an increase of 66.7% from 18 GWh in September 2024. The photovoltaic power station clusters in Porto in the north and Algarve in the south have made significant contributions, especially after being interconnected with the Spanish power grid, the excess power can be flexibly transmitted to neighboring countries.
Italy: On June 29, it broke its own record with 157 GWh, doubling the 81 GWh in February 2025. Agricultural photovoltaic (agrivoltaics) projects in Sicily and Apulia performed outstandingly. Such projects improve land utilization through the "on-board power generation and under-board planting" model, and benefit from the government's tax credit policy.
Policy And Market Mechanism Innovation
Italy: The "Transformation 5.0 Tax Credit Plan" upgraded in January 2025 provides up to 150% cost deduction for bifacial heterojunction (HJT) and perovskite stacked modules, directly promoting the penetration rate of high-efficiency modules. The second round of agricultural photovoltaic bidding launched in April allocated 323 million euros, accelerating the implementation of photovoltaic projects in the southern region.
Spain: After the nationwide blackout in April, the government accelerated the promotion of the integrated photovoltaic and storage policy, clarified the 76GW photovoltaic installation target by 2030, and simplified the approval process for energy storage projects. For example, the Zaragoza 1750/3700kWh energy storage project was put into operation in June, effectively alleviating the pressure on the grid to absorb power.
Portugal: Supporting renewable energy through tax exemptions and grants, while working with Spain to optimize the Iberian power market and improve cross-border transmission capacity to absorb excess photovoltaic power.
Technology Iteration And Capacity Expansion
Popularization of high-efficiency components: The demand for BC (back contact) batteries in the Italian and Spanish markets has increased significantly. The conversion efficiency of such components exceeds 24%, and the premium is 0.03-0.1 CNY/W. The local capacity layout of companies such as Longi and Aiko directly supports high power generation.
Energy storage supporting acceleration: Spain plans to build a 22.5GW energy storage system by 2030, of which 9.4GW is battery energy storage. Several industrial and commercial energy storage projects put into operation in June have realized the "photovoltaic + energy storage" joint frequency regulation function. Portugal has improved the grid's ability to regulate fluctuating photovoltaic power through a 500MW energy storage subsidy plan.
Weather Conditions And Grid Coordination
In June 2025, the solar irradiance in southern Europe rebounded significantly compared with April, and the average daily irradiance in southern Spain reached 6.5kWh/m², close to the historical high for the same period.
The grid operators of the three countries optimized through real-time dispatch, such as the dynamic transmission capacity allocation mechanism enabled by Red Eléctrica in Spain, to ensure the flexible consumption of photovoltaic power across regions.
Southern Europe is expected to achieve the goal of photovoltaic power accounting for more than 40% by 2030, becoming a benchmark region for global energy transformation.