The German Federal Network Agency (Bundesnetzagentur, BNetzA) estimates that 1,113 megawatts of new solar capacity will be installed in May. This figure is based on the systems registered up to 16 June and a ten percent surcharge to account for late registrations. It also takes into account the decommissioning of PV systems with a capacity of 4 MW. This means that the increase is slightly higher than in the previous month, for which the BNetzA reported an increase of 945 MW, and lower than in May 2024, with 1,223 MW.
Due to the continuing low level of expansion, the target value for monthly expansion published by the BNetzA is also increasing further. In order to achieve the target of 215 gigawatts (GW) of solar capacity in 2030, monthly expansion must now be 1,623 MW. At the end of May, a total of 5,197,542 photovoltaic systems with a cumulative capacity of 106.3 GW were connected to the grid in Germany.
Looking at the figures in detail, the low level of expansion can be attributed to a continuing low level of expansion in ground-mounted systems. At 457 MW, this was also low in May, as it was in March and April of this year. In February, ground-mounted systems with 1,124 MW were able to compensate for the decline in expansion in building-mounted solar systems. This had fallen by about half from January to February to 602 MW and levelled off at around 500 MW from March to May.
Balcony power plants remain the largest group in terms of numbers, with around 48,000 new installations reported. However, due to their low output, they continue to contribute little to the increase: 57 MW in April and 56 MW in May.
© PHOTON
