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720Wp
GCL Review

GCL-NH12/66GDF-720

MonocrystallineBifacial
23.20%
Efficiency
231.8 Wp/m²
Power Density
-0.240%/°C
Temp. Coeff. Pmax chart
636W from 720W
Power after 30 years
  • At 23.2% efficiency, this panel is on par with typical HJT 700-750W modules
  • Power density of 231.8 W/m² matches the HJT 700-750W median
  • At -0.24%/°C, hot weather performance is typical for HJT 700-750W panels
  • Bifaciality factor of 90% can add 4-14% extra yield with reflective mounting surface
  • In the top 8% for efficiency among all HJT panels
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series GCL-NH12/66GDF 7 variants
Efficiency Range 22.2% - 23.2%
Avg. Efficiency 22.70%
Technology HJT
Dimensions 2384 × 1303 mm
Show series description

The GCL-NH12/66GDF series utilizes advanced n-type TOPCon cell technology, which effectively eliminates the problem of light-induced degradation, translating into stable energy production for decades. Thanks to the bifacial dual-glass design, these modules also absorb radiation from the rear side, significantly increasing total energy yield, especially on surfaces with high albedo. This solution is a direct response to the needs of investors seeking maximum power density while maintaining the highest mechanical durability. The use of SMBB technology improves current flow and minimizes resistance losses, distinguishing this model from standard market solutions. These panels are primarily dedicated to large-scale photovoltaic farms and industrial installations where the lowest levelized cost of energy (LCOE) matters. The robust construction resistant to extreme weather conditions makes this series perform excellently in harsh environments, reducing the risk of micro-cracks. By choosing these modules, you gain the assurance of operation based on a high bifaciality factor, making them one of the most cost-effective options in the premium segment for the professional energy sector.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)720 Wp
Module Efficiency23.20%
Voltage at Max Power (Vmpp)42.70 V
Current at Max Power (Impp)16.87 A
Open Circuit Voltage (Voc)50.60 V
Short Circuit Current (Isc)17.67 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.240%/°C
Temp. Coeff. Voc-0.240%/°C
Temp. Coeff. Isc0.040%/°C
NOCT-
Cell Technology
Cell TypeMonocrystalline
Cell Count132
BifacialYes
Bifaciality Factor90%
Dimensions & Weight
Length2384 mm
Width1303 mm
Height33 mm
Weight37.9 kg
Area3.11 m²
Power Density231.8 Wp/m²
Warranty
Product Warranty15 years
Performance Warranty30 years
End-of-Warranty Output88.3%
First Year Degradation1.00%
Annual Degradation0.37%/year
Key Specifications
23.20%
Efficiency
720 Wp
Power
-0.24%/°C
Temp Coeff
30 yrs
Warranty