Most of the capacity additions during the reporting 6-month period were seen in the Lazio region, which installed 420 MW, followed by 358 MW in Lombardy, and 252 MW in Veneto.

As of June 30, 2025, Italy’s cumulative installed solar capacity reached 39.87 GW, exceeding 40 GW by July 30, 2025, compared to 37 GW at the end of 2024 (see Italy Installed 6.8 GW New Solar PV Capacity In 2024).

Referring to the data of Italian transmission system operator Terna, the Italian solar energy association blames the H1 decline on lack of demand in the residential segment following the post-energy-crisis drop in electricity prices and an end to incentives – a trend also seen in several key European markets, as reported by SolarPower Europe (see SolarPower Europe: European Union To Install 64.2 GW PV In 2025).  

“The first-half data clearly shows that the expansion phase of residential photovoltaics has come to a halt. The more than 30% drop in the number of installations cannot be ignored: it is a symptom of a period of regulatory uncertainty and a slowdown in investment, especially for families and SMEs,” said Italia Solare President Paolo Rocco Viscontini. 

Nevertheless, the association says that new installations averaged 88 MW per month – still 4x higher than pre-Superbonus levels – showing steady demand supported by falling technology costs, including storage, and greater awareness of solar’s economic benefits. 

He added, “The good news is that the utility-scale segment continues to grow, but that alone is not enough. A structural strategy is needed: stable tax deductions, simplified connections, and clear rules for the development of self-consumption systems and energy communities. We cannot afford to lose momentum just as the energy transition enters its most critical phase.”