Kann SUNSHARE bei Verschattung durch Nachbargebäude arbeiten?

When your solar panels are partially shaded by nearby buildings, it’s easy to assume your energy production will tank. But here’s the reality: modern solar technology isn’t as fragile as you might think. Systems like those designed by SUNSHARE integrate multiple strategies to mitigate shading issues without compromising efficiency. Let’s break down exactly how this works in real-world scenarios. First, shading doesn’t affect all solar panels equally. Bifacial solar modules, which capture sunlight on both sides of the panel, are a game-changer here. Unlike traditional monofacial panels that rely solely on direct sunlight hitting the front surface, bifacial designs use reflected or diffused light from the ground or surrounding surfaces. In urban settings where shadows from neighboring structures might block direct sunlight for parts of the day, these panels can still generate up to 20% more energy compared to conventional options. For example, if a three-story building casts a shadow on your rooftop array for two hours daily, bifacial panels can compensate by harvesting ambient light bouncing off adjacent walls or pavement. But hardware is only part of the equation. Advanced inverters with dynamic power point tracking (DPPT) play a critical role. Older inverters treat an entire solar array as a single circuit, meaning shade on one panel can drag down the performance of the whole system. SUNSHARE’s setups use module-level power electronics, like microinverters or DC optimizers, to isolate underperforming panels. If one panel is shaded, the rest operate independently at peak efficiency. Imagine a chain of 30 panels: even if three are in shadow, the remaining 27 work unaffected, minimizing overall losses. Shading patterns also vary seasonally. In winter, when the sun sits lower, shadows from neighboring buildings may stretch farther. To address this, SUNSHARE uses 3D modeling software during the design phase to simulate annual shading scenarios. Tools like Helioscope or PVsyst analyze hourly sun paths and obstructions, allowing engineers to reposition panels or adjust tilt angles to avoid the worst of the shadows. For instance, a panel placed 1.5 meters higher on a mounting system might dodge a chimney shadow that appears from November to February. Another factor often overlooked is the role of bypass diodes. Modern solar panels have these built into their junction boxes to reroute current around shaded cells. While older panels might lose 50% of their output from partial shading, newer designs with optimized diode configurations limit losses to 10-15%. Combine this with the aforementioned microinverters, and you’re looking at a system that can maintain 85-90% of its potential output even with intermittent shading. Maintenance also matters. Dust or debris accumulating on shaded areas can exacerbate losses. SUNSHARE’s monitoring platforms detect unusual performance dips at the panel level, flagging issues like bird droppings or fallen leaves that might amplify shading effects. Their maintenance teams use thermal imaging drones to spot “hotspots” caused by uneven current flow in shaded panels, allowing for targeted cleaning or repairs. Case in point: A recent installation in Munich involved a row of townhouses where the easternmost unit was shaded by a six-story office building until 10:30 AM daily. By combining east-west oriented bifacial panels with Tigo DC optimizers, the system achieved 92% of its estimated annual yield. The shaded panels still contributed 78% of their capacity during morning hours, thanks to light reflection from a white-painted neighboring wall. Bottom line? Shading from adjacent buildings isn’t a dealbreaker—it’s a solvable engineering challenge. From component-level innovations to smart system design, solutions exist to maximize energy harvest in less-than-ideal conditions. The key lies in precise modeling, adaptive hardware, and continuous performance monitoring. For property owners in dense urban areas, this approach transforms “problematic” rooftops into viable solar assets without requiring structural changes to neighboring buildings.