Germany installed 905 megawatts (MW) of new photovoltaic (PV) capacity in June 2025, according to data from the Federal Network Agency (Bundesnetzagentur), signaling a slowdown in solar growth compared to previous months and year-on-year figures. The June total was down from 1,146 MW in May and 1,449 MW in June 2024.
Of the newly installed capacity, rooftop solar systems contributed 439 MW, while ground-mounted installations accounted for 319 MW. The remaining capacity was attributed to other system types, including small-scale setups such as balcony PV systems. In the first six months of 2025, Germany added approximately 7.1 gigawatts (GW) of solar capacity—below the 8 GW installed in the same period last year. Early 2025 saw the strongest growth, with more than 3.23 GW connected to the grid in January and February alone.
The decline in monthly installations comes in the wake of the Solar Peak Act, introduced in March 2025. The law removes compensation for PV system operators during periods of negative electricity prices on the spot market. The Bundesnetzagentur recorded 389 hours of such negative pricing in the first half of 2025, dampening financial incentives for solar producers.
Despite the regulatory shift, Germany’s total installed PV capacity has reached 107.37 GW. “The remarkable growth of photovoltaics continues,” said Klaus Müller, president of the Bundesnetzagentur, underscoring the resilience of the sector. Germany is targeting 215 GW of solar capacity by 2030, with continued policy support for renewable energy development.
The latest figures emphasize the importance of upgrading grid infrastructure and expanding energy storage to maintain momentum in solar deployment. As Germany advances its energy transition, solar remains a key contributor to reducing carbon emissions and ensuring long-term energy sustainability.
