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640Wp
AIKO Review

AIKO-A640-GRH66Dw

MonocrystallineBifacial
23.70%
Efficiency
236.9 Wp/m²
Power Density
-0.260%/°C
Temp. Coeff. Pmax chart
569W from 640W
Power after 30 years
  • At 23.7% efficiency, this panel is on par with typical Back Contact 600-650W modules
  • Power density of 236.9 W/m² matches the Back Contact 600-650W median
  • At -0.26%/°C, hot weather performance is typical for Back Contact 600-650W panels
  • 55% bifaciality enables rear-side power generation, boosting yield by 3-8% on reflective surfaces
  • In the top 3% for efficiency among all Back Contact panels
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series Stellar 1N+66 5 variants
Efficiency Range 23.7% - 24.4%
Avg. Efficiency 24.06%
Technology Back Contact
Dimensions 2382 × 1134 mm
Show series description

AIKO Stellar 1N+66 is an advanced series of modules utilizing groundbreaking All-Back-Contact (ABC) cell technology, which completely eliminates energy losses resulting from front-side shading by busbars. By moving the contacts to the rear, the entire front surface of the module actively absorbs light, translating into unrivaled power density. A key innovation distinguishing this line is the partial shading optimization function, allowing modules to work efficiently in conditions where standard panels drastically lose efficiency. This solves the real problem of production drops caused by architectural elements, chimneys, or leaves. The Stellar series is primarily dedicated to large commercial installations and solar farms, where maximum return on investment matters most. What sets these panels apart from competing solutions is the exceptional minimal power degradation over time and excellent performance parameters at high temperatures. The use of N-type silicon in combination with a unique architecture makes AIKO Stellar 1N+66 an innovative premium-class solution for the most demanding investors. By choosing this technology, you are opting for energy production stability and the highest aesthetics without visible silver tracks. It is currently one of the most technologically advanced products available on the market.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)640 Wp
Module Efficiency23.70%
Voltage at Max Power (Vmpp)41.80 V
Current at Max Power (Impp)15.32 A
Open Circuit Voltage (Voc)49.10 V
Short Circuit Current (Isc)16.48 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.260%/°C
Temp. Coeff. Voc-0.220%/°C
Temp. Coeff. Isc0.050%/°C
NOCT-
Cell Technology
Cell TypeMonocrystalline
Cell Count132
BifacialYes
Bifaciality Factor55%
Dimensions & Weight
Length2382 mm
Width1134 mm
Height30 mm
Weight32.5 kg
Area2.70 m²
Power Density236.9 Wp/m²
Warranty
Product Warranty15 years
Performance Warranty30 years
End-of-Warranty Output88.8%
First Year Degradation1.00%
Annual Degradation0.35%/year
Key Specifications
23.70%
Efficiency
640 Wp
Power
-0.26%/°C
Temp Coeff
30 yrs
Warranty