Based on data from Germany's Marktstammdatenregister (the official energy asset registry) as of 15 June, the Bundesnetzagentur projects total solar PV additions for May 2026 at 1,335.7 MW. The figure already accounts for expected late registrations. By mid-June, around 73,800 new systems had been logged, representing 1,175.5 MW of confirmed capacity.
Germany's cumulative solar capacity nears 124 GW
Ground-mounted utility-scale solar parks continued to outpace rooftop systems: approximately 680 MW of new large-scale capacity was registered in May, compared to 433 MW from some 27,817 new rooftop installations. This trend has held in every month of 2026 except January, with year-to-date totals of roughly 3,375 MW for solar parks versus 2,530 MW for rooftop PV.
Plug-in balcony solar remains stable
Wholesale energy distributor EWS noted in a separate analysis that market activity is recovering faster than registry numbers currently suggest, and that the regulator's 15% buffer for late-reported installations may be too conservative. The April revision supports this: the Bundesnetzagentur initially forecast 1,160 MW for April, a figure that has since been revised up to 1,250 MW.
Source: Bundesnetzagentur geht von knapp 1336 Megawatt Photovoltaik-Zubau im Mai aus - PV Magazine Deutschland· Based on source, with AI-assisted rewriting.
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