m. Сміла, Незалежності, 67г. оф, 406/6
Longi LR8-66HGD-620M Bifacial - solar panel 620 W
Description Longi LR8-66HGD-620M Bifacial
Solar panel Longi LR8-66HGD-620M Bifacial
Not every site has generous roof space to work with. When the roof is tight — a small retail unit, a car service shop, a warehouse with extra rooftop ventilation equipment — the number that matters most stops being price per watt and becomes watts per square metre. The Longi LR8-66HGD-620M Bifacial delivers 620 W per unit at 22.95% module efficiency, and that efficiency figure is exactly what decides how many kilowatts can be squeezed onto a given footprint.
Efficiency above 22.9% means power density
N-type TOPCon: high efficiency without a durability trade-off
The 132 N-type TOPCon half-cells deliver high efficiency alongside a flat degradation curve — no more than 1% in the first year and around 0.4% per year afterward. High initial efficiency is not eaten away by early ageing; it holds through essentially the full 30-year performance warranty period (~87.4% residual output).
A double-glass build for roofs with limited access
Bifacial generation as a bonus on top of density
The 80% ±5% bifaciality factor adds extra yield on top of an already high front-side efficiency — the combined effect squeezes the maximum kilowatt-hours out of a limited roof footprint, drawing on both the front and rear surfaces without expanding the mounting area.
If your site is roof-space constrained and every watt per square metre counts, send our sales team your roof dimensions and we will calculate how many Longi LR8-66HGD-620M Bifacial modules will fit. Currently in stock.
Characteristics Longi LR8-66HGD-620M Bifacial
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