Home – Energy – A floating solar plant using vertical panels is flipping the usual solar curve by producing more power in the morning and late afternoon, the hours when homes and factories actually spike demand
Solar power has a timing problem. It often floods the grid around noon, then fades right when families start cooking dinner, washers hum, and factories are still running.
In Bavaria, SINN Power is testing a surprisingly simple answer. Stand the panels upright, float them on water, and let them catch the lower sun at the edges of the day. The company inaugurated what it calls the world’s first vertically floating photovoltaic plant at the Jais gravel pit in Germany’s Starnberg district, a 1.87-megawatt system with 2,600 solar modules.
Most conventional solar panels in the Northern Hemisphere are tilted toward the south. That setup maximizes midday sunlight, but by the EU’s own science advisers, it can also create a midday power surge that is less useful when demand rises earlier or later.
SKipp flips that pattern. The modules face east and west, so one side works harder in the morning and the other in the late afternoon, while the bifacial design can use light from both sides. Why does that matter?
The European Commission’s Joint Research Centre says east-west bifacial PV can shift peak production toward morning and evening, smooth solar output, and make electricity easier to use when consumers need it. Dr. Philipp Sinn described the Bavarian installation as a photovoltaic system that produces electricity “when conventional power plants stand still,” according to SINN Power’s translated remarks.
The plant sits in Gilching, on a gravel pit lake used by Kies- und Quetschwerk Jais. SINN Power says it covers only 4.65% of the water surface, far below Germany’s 15% legal ceiling for this kind of floating installation.
The rows are separated by open water corridors of about 13 feet, which helps sunlight and oxygen still reach the lake surface. That detail matters because floating solar is not just about squeezing panels onto spare water. It has to live with the water below it.
The U.S. Department of Energy notes that floating photovoltaics can use otherwise unused water surfaces and may reduce evaporation, easing pressure on land. Still, a lake is not an empty parking lot. It is a living system, and that is where the hard questions begin.
Vertical panels on water sound a little like sails. A strong gust can push against the panel face, and waves add their own motion underneath.
SINN Power says its SKipp technology mounts modules vertically and lets them deflect under wind loads instead of staying rigid. For SKipp Float, the company lists shore anchoring, an east-west grid-friendly production profile, and no sealing of the water surface among the system’s advantages.
Trade reporting on the project says each floating unit uses a narrow keel-like base extending about 5.2 feet underwater, with a cable system that allows controlled movement under wind pressure. In practical terms, that turns stiffness into flexibility, a bit like a tall building that sways instead of cracking.
This is not just a pretty image for a clean-energy brochure. SINN Power says the Gilching plant has been connected to the grid since late August 2025 and, in its first three weeks after commissioning, generated more than 100,000 kilowatt-hours despite fall weather. During that period, the gravel plant’s draw from the grid fell by 70%.
For an industrial site full of conveyors, crushers, and pumps, that timing is the business case. Clean power helps, but avoiding grid purchases during the workday is what shows up on the electric bill.
A second 1.7-megawatt expansion stage is already being planned, according to the company. Once both stages are finished, SINN Power says the system should still use less than 10% of the water surface.
Not every quarry lake is ready for this. Floating PV means floats, cables, anchoring, permitting, water monitoring, and hardware that has to survive a wet environment day after day.
A review published in Sustainability found that improved panel efficiency and reduced land use are supported by the literature, but claims about water quality and algae still lack strong empirical evidence.
The same review found floating PV can produce 5% to 11% more power than comparable land-based systems in some locations because water and airflow help lower panel temperatures.
Oregon State University and U.S. Geological Survey researchers added another warning in 2025. Their modeling found that reservoirs can respond differently depending on depth, circulation, oxygen dynamics, and fish habitat, which means long-term monitoring is not optional if this technology scales.
At the end of the day, the Bavarian plant is not just a solar farm with a clever shape. It treats solar energy as a scheduling problem, not only a generation problem.
For grids already wrestling with too much noon solar and too little evening clean power, that distinction matters. Batteries will still be important, but the first lever may be simpler than expected, turning the panels to face the hours when people actually live and work.
SINN Power’s project is still one site, not proof that every lake should be covered. But it gives utilities, manufacturers, and policymakers a real-world test case for a solar design that thinks less like a rooftop and more like the grid.
The official statement was published on SINN Power’s website.
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