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475Wp
JA Solar Review

JAM54D40-475/LR

Monocrystalline
23.80%
Efficiency
237.7 Wp/m²
Power Density
-0.290%/°C
Temp. Coeff. Pmax chart
415W from 475W
Power after 30 years
  • 23.8% module efficiency - 1.3pp better than the N-type 450-500W median of 22.5%
  • Power density of 237.7 W/m² packs 12.5 W/m² more into the same footprint vs N-type 450-500W median (225.2 W/m²)
  • At -0.29%/°C, hot weather performance is typical for N-type 450-500W panels
  • At 22.0 kg, this panel is 1.5 kg lighter than N-type 450-500W median (23.5 kg) - easier handling during installation
  • Ranked #306 out of 11672 panels for efficiency in the database
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series JAM54D40 LR 6 variants
Efficiency Range 22.5% - 23.8%
Avg. Efficiency 23.15%
Technology N-type
Dimensions 1762 × 1134 mm
Show series description

Photovoltaic panels from the JAM54D40 LR series are advanced modules made with n-type technology that redefine performance standards in the micro-installation and commercial systems sectors. The use of n-type DeepBlue 4.0 Pro cells allows for a significant reduction in light-induced degradation (LID), which directly translates into higher energy yields throughout the entire life cycle of the power plant. The bifacial double glass construction ensures not only exceptional mechanical resistance to extreme weather conditions but also enables the generation of additional power from reflected radiation reaching the back of the module. Thanks to excellent temperature coefficients, this series solves the problem of efficiency drops during summer heat, outperforming standard p-type solutions. This product is dedicated to investors for whom maximizing self-consumption on a limited roof area and a quick return on investment are key. Importantly, SMBB (Super Multi-Busbar) technology improves current flow and minimizes the risk of micro-cracks, distinguishing these panels from cheaper alternatives with lower performance standards. It is a choice for those focusing on innovations that guarantee stable and predictable yields for many decades, regardless of the level of sunlight or local ground conditions.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)475 Wp
Module Efficiency23.80%
Voltage at Max Power (Vmpp)34.18 V
Current at Max Power (Impp)13.90 A
Open Circuit Voltage (Voc)40.55 V
Short Circuit Current (Isc)14.67 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.290%/°C
Temp. Coeff. Voc-0.250%/°C
Temp. Coeff. Isc0.045%/°C
NOCT45°C
Cell Technology
Cell TypeMonocrystalline
Cell Count108
BifacialNo
Bifaciality Factor-
Dimensions & Weight
Length1762 mm
Width1134 mm
Height30 mm
Weight22.0 kg
Area2.00 m²
Power Density237.7 Wp/m²
Warranty
Product Warranty15 years
Performance Warranty30 years
End-of-Warranty Output83.1%
First Year Degradation1.00%
Annual Degradation0.40%/year
Key Specifications
23.80%
Efficiency
475 Wp
Power
-0.29%/°C
Temp Coeff
30 yrs
Warranty