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Germany’s long-awaited rebound in rooftop solar has still not arrived, while large-scale solar farms have seen a steep drop, based on the Federal Network Agency‘s newest September data. The agency reported that the country brought 1,226 MW of fresh photovoltaic capacity online in September, lower than August’s 1,644 MW but higher than the 920 MW logged in September 2025. Over the preceding 12 months, only February 2026 produced a smaller monthly figure.
The Federal Network Agency compiled its numbers from commissioning and decommissioning records filed with the Market Master Data Register by October 13. Because operators are given four weeks to report new systems, the agency made a 15% adjustment for installations that remain unregistered.
Rooftop additions amounted to 38,859 new systems with 554 MW of combined capacity in September, a modest gain over the 539 MW recorded in August. Monthly additions stood at 814 MW in July and 672 MW in June. These figures suggest that the anticipated surge in rooftop installations before planned amendments to Germany’s Renewable Energy Sources Act has not yet happened. The federal government’s draft bill would eliminate feed-in tariffs for small PV systems following a transition period, with the changes set to begin in early 2027.
Utility-scale solar additions contracted sharply in September, with only 103 ground-mounted projects totaling 479 MW, the year’s lowest monthly level. August saw 166 solar parks with 1,054 MW of combined capacity commissioned.
Plug-in solar installations likewise fell. The agency counted 28,647 new systems totaling 42 MW in September, down from 41,978 systems and 61 MW in August.
By the end of September, Germany had 6.34 million operational PV systems with 130.7 GW of combined capacity. Since the start of 2026, 660,445 systems totaling 12,762 MW have been commissioned, while 29,898 systems with 136 MW of combined capacity have been decommissioned. For comparison, during the first nine months of 2025 the country installed 12.56 of new PV installations.
German PV wholesaler EWS also reported comparatively weak September installation figures. Its review of Market Master Data Register data showed 1,026 MW of newly installed PV capacity based on information available at the beginning of the week. That number is still preliminary, since operators have one month to register new installations and further reports are anticipated. EWS expects September additions to stay below those of earlier months even once late registrations are counted. Its most recent figures show 1,941 MW of new capacity in July and 1,651 MW in August.
Nevertheless, the company expects September installations to surpass the same month last year, when additions reached 1,024 MW including late registrations.
EWS also compared Germany’s solar market performance across the first three quarters of 2025 and 2026, noting a move toward larger installations despite fairly stable overall deployment. The company stated that after three quarters the German photovoltaic market is statistically tracking closely to levels seen in prior years, with total capacity added so far slightly above that of the first three quarters of 2024 and 2025. It added that the market structure is shifting significantly, with new capacity increasingly gravitating toward large-scale installations, a trend that emerged as early as 2024, while project-based business and the traditional specialized trade segment remained evenly balanced in 2025.
PV systems above 750 kW continue to capture more market share, representing roughly 57% of all new solar capacity installed in Germany so far this year. Conversely, installations in market segments traditionally served by specialist installers keep shrinking. The decline touches both commercial PV systems and residential rooftop installations of up to 10 kW. According to EWS, newly installed capacity in these segments has dropped by more than 40% since 2024.
Interactive table based on the Store Companies dataset for this report.
Report Scope and Analytical Framing
Concise View of Market Direction
Market Size, Growth and Scenario Framing
Commercial and Technical Scope
How the Market Splits Into Decision-Relevant Buckets
Where Demand Comes From and How It Behaves
Supply Footprint and Value Capture
Trade Flows and External Dependence
Price Formation and Revenue Logic
Who Wins and Why
How the Domestic Market Works
Commercial Entry and Scaling Priorities
Where the Best Expansion Logic Sits
Leading Players and Strategic Archetypes
How the Report Was Built
Major component supplier
Global lighting leader, now part of ams OSRAM
Multinational, key HQ in Munich
Specializes in multi-junction solar cells for space
Organic photovoltaic (OPV) films
EWE research institute for energy tech
Measurement equipment & research, German ops
In-situ metrology for production
MOCVD systems producer
Laser systems for production
Wet processing and texturing systems
Furnace and diffusion systems
Vacuum coating machines
Vacuum coating systems
Vacuum and crystal growing systems
Handling and automation solutions
Laser micromachining systems
Sputtering and evaporation systems
Research and testing services
Surface vision inspection
Precision optics for LEDs
Diode laser systems
PMMA optics and resins
Polysilicon and polymeric materials
Business unit of Heraeus
High-performance OLED emitters
Silicon wafers for electronics & PV
Power electronics for lighting & PV
Polycarbonates and coatings
System technology, not cell production
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