Germany has commissioned the world’s first utility-scale vertical floating solar technology, demonstrating a new approach to renewable energy generation on artificial water bodies.
Vertical floating solar technology reached a milestone in October 2025 when Sinn Power launched its SKipp system on Lake Jais in Bavaria. The 1.87 megawatt facility generates approximately 2 gigawatt-hours of electricity annually. It marks the first commercial deployment of vertically mounted panels on a floating platform.
The plant sits on an artificial lake created by gravel extraction in the Starnberg district of southern Germany. Arrays of vertical east-west-oriented solar panels are separated by at least four meters. This configuration provides stable electricity generation throughout the day and increases output during morning and evening hours when conventional solar systems produce less energy.
Each SKipp-Float segment requires only a narrow submerged base. At up to 1.6 meters below the water surface, it ensures a minimal spatial footprint. The substructure secures the modules and allows controlled movement under wind loads and fluctuating water levels.
The system connects to the grid via a floating cable and a shore-based feed-in point. This enables smooth energy transfer without disrupting the lake’s ecosystem.
Bavarian Minister-President Markus Söder attended the October inauguration ceremony. He emphasized that the project demonstrates what an innovative energy transition looks like. Bavaria accounts for 25% of Germany’s overall expansion of new renewable capacity.
The company managing the gravel pit, Kies- und Quetschwerk Jais, reduced its grid electricity consumption by around 60 percent during the initial phase. Savings are expected to reach up to 70% once production stabilizes.
Vertical floating solar technology is designed for artificial water bodies deeper than 1.6 meters. These include quarry lakes and gravel pits. Floating solar installations on artificial water surfaces are particularly valuable because they provide additional opportunities for solar energy generation without occupying land.
The SKipp-Float plant occupies only 4.65% of the lake’s surface. This falls well below the 15% maximum allowed under the German Federal Water Resources Act. An expansion of 1.7 megawatts of installed capacity is planned. Total lake coverage will remain below 10%.
Environmental monitoring has shown no negative ecological impact from the installation. The structure itself improves oxygen exchange and allows sunlight to reach deeper water layers. Water quality has improved since commissioning.
New waterfowl nests have been observed on the floating sections. Schools of fish gather around the submerged stabilizing part of the platform. These findings suggest that vertical floating solar technology can coexist with aquatic ecosystems.
The vertical orientation offers several advantages over conventional horizontal panels. Morning and evening generation increases because panels face east and west. This produces more consistent output across daylight hours. The spacing between panel arrays allows wind to pass through more easily, reducing structural stress.
Traditional floating solar installations use horizontal panels that track the sun or remain fixed facing south. These systems maximize midday output but taper sharply during early and late hours. The vertical approach smooths the generation curve.
Sinn Power says its system works best on deeper artificial water bodies. Quarry lakes and gravel pits often have depths exceeding 10 meters. These sites cannot support bottom-mounted structures economically. Floating systems become the only viable option.
Germany has thousands of such artificial lakes from mining and extraction activities. Many sit idle after operations cease. Converting them to renewable energy production adds value without competing for agricultural or residential land.
The Jais facility demonstrates scalability. Installation took several months from initial deployment to grid connection. The modular design allows expansion in phases based on available capital and grid capacity.
Sinn Power plans to extend its vertical-floating solar technology concept to open-sea applications. Ocean deployment would require enhanced anchoring systems and more robust materials to withstand wave action and saltwater corrosion. But the basic principles would remain the same.
Offshore floating solar could complement offshore wind farms. Wind and solar generation patterns often differ. Combining both technologies on the same maritime sites could improve overall capacity factors and grid stability.
The Lake Jais project provides proof of concept for vertical floating solar technology in controlled conditions. Success here builds confidence for more challenging ocean environments. Coastal nations with limited land area could benefit significantly from such systems.
Europe’s push to expand renewable energy creates demand for innovative solutions. Land scarcity in densely populated regions makes floating solar increasingly attractive. Adding vertical orientation to the mix could further enhance economic viability.
The technology still requires validation across different climates and water conditions. Winter ice formation, extreme temperatures, and varying water chemistry all present potential challenges. Long-term performance data from Jais will help engineers refine designs.
