Bifacial modules deliver 5-18% extra yield depending on ground albedo and tracker configuration. Here's how to specify and buy them correctly from Chinese manufacturers.
Typical bifacial gain
8–14%
single-axis tracker + sandy soil
Chinese bifacial share
82%
of shipments in 2026
Bifacial factor
80–85%
TOPCon rear efficiency
Price premium
$0.001–0.003/W
vs monofacial N-type
Glass-glass vs glass-transparent-backsheet
Glass-glass (double-glass) has better long-term durability, 30-year warranty and higher bifaciality — the industry-standard choice for utility. Glass-transparent-backsheet is 1.2 kg/panel lighter and enables residential bifacial, but has 20-25 year warranty caps and lower bifacial factor (72-78%).
Frequently asked questions
QDo bifacial modules work on rooftops?
Only on white/reflective flat roofs with 8-12° tilt. On typical dark asphalt or pitched roofs bifacial gain is <2% and doesn't justify the premium.
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