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475Wp
Gokin Review

GK-5-54HGb-475M

Monocrystalline
23.80%
Efficiency
238.4 Wp/m²
Power Density
-0.260%/°C
Temp. Coeff. Pmax chart
422W from 475W
Power after 30 years
  • Efficiency of 23.8% matches the Back Contact 450-500W median
  • Power density of 238.4 W/m² packs 3.2 W/m² more into the same footprint vs Back Contact 450-500W median (235.2 W/m²)
  • Temperature coefficient of -0.26%/°C matches the Back Contact 450-500W median
  • In the top 3% for efficiency among all Back Contact panels
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series GK-5-54HGb 9 variants
Efficiency Range 22.3% - 24.3%
Avg. Efficiency 23.32%
Technology Back Contact
Dimensions 1757 × 1134 mm
Show series description

The GK-5-54HGb series features advanced photovoltaic modules using innovative N-type Back Contact technology, positioning them at the very forefront of the most efficient solutions on the Polish market. By moving the busbars entirely to the back of the cell, these panels offer maximum light absorption area and flawless aesthetics that fit perfectly into modern architectural designs. The dual glass design provides outstanding resistance to external factors, effectively eliminating the risk of micro-cracks and corrosion in variable, demanding climates. This product is designed for prosumers and companies aiming to maximize yields while minimizing the installation area. These modules solve the power degradation problem by offering minimal annual performance decline, ensuring stable energy production for over 30 years. Exceptional efficiency in low-light conditions allows the system to work effectively even on cloudy days and during autumn-winter periods. What sets them apart from the competition is a unique combination of bifacial technology and busbarless architecture, which enables additional energy gain from reflected radiation while maintaining the highest mechanical durability. By choosing GK-5-54HGb, you invest in technology that combines a prestigious look with uncompromising profitability.

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)34.80 V
Current at Max Power (Impp)13.66 A
Open Circuit Voltage (Voc)41.24 V
Short Circuit Current (Isc)14.36 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.260%/°C
Temp. Coeff. Voc-0.220%/°C
Temp. Coeff. Isc0.050%/°C
NOCT45°C
Cell Technology
Cell TypeMonocrystalline
Cell Count108
BifacialNo
Bifaciality Factor-
Dimensions & Weight
Length1757 mm
Width1134 mm
Height30 mm
Weight21.0 kg
Area1.99 m²
Power Density238.4 Wp/m²
Warranty
Product Warranty15 years
Performance Warranty30 years
End-of-Warranty Output88.8%
First Year Degradation1.00%
Annual Degradation0.35%/year
Key Specifications
23.80%
Efficiency
475 Wp
Power
-0.26%/°C
Temp Coeff
30 yrs
Warranty