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Germany onshore wind capacity net additions

Germany onshore wind capacity net additions stood at 444.77 Megawatts 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 2025 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
Monthly net additions to capacity (Bundesnetzagentur, MaStR)
Onshore wind444.77452.9358.95426.63336.25275.7444.9242.02187.14767.7
Offshore wind240356.55131.55195211.35203.25182.4114.3170.85503.4

Understanding germany onshore wind capacity net additions

Incremental changes to the terrestrial wind power fleet over a specific month are captured within this Bundesnetzagentur MaStR dataset. The series tracks the gross megawatt rating of newly commissioned onshore turbines, strictly offset by the capacity lost from dismantled or repowered legacy towers. By isolating just the net monthly flow, the measure highlights the immediate realities of inland wind farm construction, sidestepping the massive cumulative totals that obscure recent localized development bottlenecks. The scope covers all land-based wind generation hardware achieving formal grid registration, deliberately excluding any marine-based counterparts.

Month-to-month analysis of these additions is notoriously volatile, as the completion of a large commercial wind park can create a sudden temporary surge in the reported data. Because complex permitting approvals and heavy transport logistics dictate commissioning schedules, comparing the current month against the same month in the prior year offers a much smoother view of long-term sector health. Preliminary prints often undergo significant adjustments as operators finalize the mandatory paperwork following complex grid synchronization tests. Analysts must be careful when interpreting repowering events within this series, as replacing multiple small turbines with a massive generator may result in a surprisingly modest net capacity gain despite a total site overhaul.

Frequently asked questions

Does a repowering project result in a large gross addition to this dataset?
The addition only reflects the net difference between the rated capacity of the new turbine and the output of the older units it replaced.
Why might the net additions theoretically fall below zero?
If a cluster of aging wind farms is decommissioned simultaneously without sufficient new construction to offset the loss, the net change becomes negative.
Are towers under active construction included in the monthly flow?
Only turbines that have fully completed mechanical assembly and successfully registered their electrical grid connection are incorporated into the monthly total.

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