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Germany offshore wind installed capacity

Germany offshore wind installed capacity stood at 11.55 GW in Sep 2026, according to Fraunhofer Institute for Solar Energy Systems ISE and Federal Network Agency (Bundesnetzagentur). It is one of the indicators in the Renewable power expansion table (Value · Monthly), with a complete series running from Aug 2009 to Sep 2026. The complete series with an interactive chart, free to download.

Source: Fraunhofer Institute for Solar Energy Systems ISE and Federal Network Agency (Bundesnetzagentur)Last updated: Curated by Bui Thanh Phuc
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This indicator in the Renewable power expansion table

Indicator09-202608-202607-202606-202605-202604-202603-202602-202601-202612-2025
Wind
Wind offshore11.5511.310.9410.8110.6210.410.210.029.99.73
Wind onshore71.3670.9170.4570.0969.6769.3369.0568.6168.3768.18

Understanding germany offshore wind installed capacity

Marine wind generation infrastructure located in territorial waters and exclusive economic zones makes up this specialized capacity metric. The Fraunhofer ISE series aggregates the total rated output of all operational turbines anchored to the seabed or utilizing floating platforms. It stands apart from terrestrial wind figures due to the massive scale, unified grid connection procedures, and lengthy marine engineering cycles inherent to ocean-based projects. Only fully commissioned arrays capable of transmitting power back to the mainland are tallied, excluding projects still undergoing initial monopile installation or awaiting high-voltage offshore converter station completion.

Because oceanic wind farms are constructed in massive, synchronized phases, month-to-month capacity comparisons exhibit extreme lumpiness and extended flat periods, making them less useful for spotting immediate trends. Year-on-year evaluations provide a far more reliable gauge of offshore expansion by smoothing out the erratic delivery schedules of specialized marine installation vessels. Retrospective data adjustments occasionally occur when final grid integration tests reveal minor variations from initial provisional ratings. Analysts studying energy transition milestones must avoid conflating this installed marine hardware maximum with actual capacity factors, as the harsh marine weather systems dictate the true operational utilization of these massive generator arrays.

Frequently asked questions

Are marine projects from different coastal waters combined here?
The dataset aggregates all operational marine turbines regardless of their specific maritime basin or coastal geography.
What triggers a project's inclusion in this capacity total?
A marine array is only added once its individual turbines are successfully synchronized and capable of exporting commercial power to the mainland grid.
Do temporary maintenance shutdowns lower the reported capacity?
The metric measures permanent structural generation potential, meaning short-term mechanical outages do not subtract from the cumulative total.

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