Bifacial modules offer many advantages over traditional solar panels. Power can be produced from both sides of a bifacial module, increasing total energy generation. They’re often more durable because both sides are UV resistant, and potential-induced degradation (PID) concerns are reduced when the bifacial module is frameless. Balance of system (BOS) costs are also reduced when more power can be generated from bifacial modules in a smaller array footprint.
Some companies with bifacial modules currently on the market include LG, LONGi, Lumos Solar, Prism Solar, Silfab, Sunpreme, Trina Solar and Yingli Solar. As more manufacturers begin production, bifacial modules look to be a niche product entering the mainstream.
Lumos Solar GSX bifacial modules
Bifacial modules produce solar power from both sides of the panel. Whereas traditional opaque-backsheeted panels are monofacial, bifacial modules expose both the front and backside of the solar cells. When bifacial modules are installed on a highly reflective surface (like a white TPO roof or on the ground with light-colored stones), some bifacial module manufacturers claim up to a 30% increase in production just from the extra power generated from the rear.
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