In a new weekly update for PV -MagazineSolcast, a DNV company, reports that significant parts of Europe saw much more solar radiation than normal last month.
Sunny Summer Conditions supplied record photovoltaic (PV) production in a large part of Western Europe in June 2025, because high-pressure systems brought persistent sky and above average irradiation. For the first time, Solar became the leading energy source for Europe for the month, despite a few regions in the north and east, including Scandinavia and the Baltic states, who experience oppressed solar performance due to persistent frontal systems. Analysis using the Solcast APIshowed that from Scotland to Turkey, significant parts of the continent saw much more irradiation than usual for the month.
In the south of and Western Europe, a dominant high-pressure pattern, in combination with dry air masses, the irradiation of June enabled to rise considerably above climatic standards.
Solved data show an increase of up to 30% in Greece and 10% to 20% in Western Europe and Turkey. These sunny conditions, combined with the growing solar capacity, pushed solar energy to the top of Europe’s Power Mix for the first time.
Analysis of solution schedule models for Great Britain, Germany, France, Italy, the Netherlands and Belgium showed that all six regions had an above-average solar sun (adapted for increased capacity). June 2025 has achieved the top three Junes and Italy for the past 12 years the highest availability of solar energy during that period during that period, which contributed to the record top weeks on the continent.
The strong radiation was associated with various heat wave events throughout Europe. England registered its hottest June since the national records started and Spain experienced a record peak temperature of 46 degrees Celsius. While the clear skies improved the solar output, heat -extreme had a marginal negative effect. Panel efficiency drops with rising temperatures and in parts of South Spain, where the temperature was up to 5 degrees above average, assets operators could expect PV output reductions of around 2% due to thermal losses.
The exceptional month for solar energy in the south and west did not expand over the entire continent. Scandinavia and the Baltic situations experienced under average irradiation as a result of frequent frontal activity. The daily radiation in these regions fell by around 10% in Scandinavia and up to 15% in the Baltic states and reached approximately 5 kWh/m2 compared to the long -term average of June 5.5 to 6 kWh/m2. Despite these regional deficits, the relatively smaller contribution of northern regions to the total European solar generation meant that this had no significant influence on the broad record of Europe.
Dissolved Produces these figures by following clouds and aerosols with a resolution of 1-2 km worldwide, with the help of satellite data and own Ai/ml -algorithms. This data is used to stimulate radiation models, so Solcast is able to calculate the radiation at high resolution, with a typical distortion of less than 2%, and also cloud-tracking predictions. This data is used by more than 350 companies that manage more than 300 GW of solar assets worldwide.
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