Longi LR8-66HGD-595M Bifacial - solar panel 595 W

CL-000762
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Description Longi LR8-66HGD-595M Bifacial

Solar panel Longi LR8-66HGD-595M Bifacial

The Longi LR8-66HGD-595M Bifacial sits at the entry-power end of the LR8-66HGD line, delivering 595 W per module at a module efficiency of 22.03%. For a private home this is a practical starting point: system output maps cleanly onto standard single- or three-phase inverters without oversizing the input, while a single panel already produces meaningful energy per square metre of roof. Being the lower power step in the series does not mean simplified engineering — it is the same glass-glass, bifacial platform used across the whole LR8-66HGD family.

N-type TOPCon cells, not legacy PERC

The 132 half-cells are built on N-type TOPCon silicon, which has largely displaced P-type PERC precisely because it avoids the boron-oxygen light-induced degradation that used to eat into output during the first months of operation. First-year degradation here stays at or below 1%, subsequent yearly loss is around 0.4%, and the 30-year performance warranty (roughly 87.4% residual output) keeps the system's economics predictable for its entire service life.

The back side keeps working too

With a bifaciality factor of 80% ±5%, the rear surface harvests light reflected off the roof deck, gravel, or light-coloured membrane surfaces common on residential roofs. In winter, snow lying near the array or on adjacent roof planes adds extra reflected light to the rear side, partly offsetting the seasonal drop in direct irradiance.

Built for real-world exposure

The glass-glass construction — as opposed to a glass-backsheet layup — resists moisture ingress, does not yellow under UV, and is markedly more resistant to potential-induced degradation (PID). An operating range of -40°C to +85°C together with an IP68 rating means the module can be installed across a wide range of climates without losing its rated behaviour.

Sized for pitched residential roofs

At 2382×1134×30 mm and 33.5 kg, the panel is manageable for a two-person installation crew on a typical pitched roof, whether it is finished in metal tile, soft membrane, or standing-seam sheet. The silver frame keeps a neutral, low-key look that fits most roofing materials without drawing attention to itself.

In practice, homeowners increasingly gravitate toward the lower power step of a Tier-1 line rather than the flagship wattage: it simplifies string sizing against inverter input limits, and the generation gap versus higher-wattage siblings in the same series tends to matter far more on large commercial roofs than on an average residential array.

If you are planning a residential array and want proven N-type TOPCon technology at a sensible power step, reach out to our sales team for a configuration calculation. The Longi LR8-66HGD-595M Bifacial is currently in stock, with fast dispatch available.

Characteristics Longi LR8-66HGD-595M Bifacial

Bidirectional generation coefficient
80% ±5%
Cell type
N-type TOPCon
Class
Tier-1
Color
Срібний
Construction
glass-glass
First year degradation
≤1%
Frame color
Срібний
Further degradation
0.4%/рік
Generation type
Two-way
Maximum system voltage
1500 V
Module efficiency
22.03%
MPP current
14.76 А
MPP voltage
40.30 В
Number of cells
132 half-cell
Operating temperature
from -40 to +85°C
Performance guarantee
30 років (≈87.4%)
Power
595 W
Protection class
IP68
Residual capacity 30 years of operation
≈87.4%
Technology
Bifacial, Double Glass, N-type TOPCon
General characteristics
Country of origin
People's Republic of China
Country of origin
People's Republic of China
Guarantee
12 months
Manufacturer
Longi
Overall dimensions
Length
2382 мм.
Thickness
30 mm.
Width
1134 mm.
Physical properties
Material of execution
Скло
Weight
33.5 кг.
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