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720Wp
GCL Review

NT12/66GDF-720

MonocrystallineBifacial
23.18%
Efficiency
231.8 Wp/m²
Power Density
-0.290%/°C
Temp. Coeff. Pmax chart
629W from 720W
Power after 30 years
  • Efficiency of 23.2% matches the TOPCon 700-750W median
  • At 231.8 W/m² power density, roof space requirements are typical for TOPCon 700-750W panels
  • At -0.29%/°C, hot weather performance is typical for TOPCon 700-750W panels
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
  • Ranked #1072 out of 11891 panels for efficiency in the database
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series NT12/66GDF 6 variants
Efficiency Range 22.7% - 23.5%
Avg. Efficiency 23.10%
Technology TOPCon
Dimensions 2384 × 1303 mm
Show series description

Photovoltaic panels from the GCL NT12/66GDF series redefine performance standards thanks to the use of innovative N-type TOPCon cells, which effectively eliminate negative power degradation phenomena over time. The construction based on bifacial double-glass technology ensures that these modules not only generate energy from direct radiation but also effectively utilize light reflected from the ground, significantly increasing investment profitability in challenging lighting conditions. The use of large silicon wafers in the Large-format 210mm format allows for the construction of higher-power systems with fewer mounting components, which realistically reduces the cost of the entire installation. This series is primarily designed for large-scale farms and major commercial projects, where durability and resistance to external factors are key. What distinguishes these panels from the competition is an excellent temperature coefficient and enhanced protection against micro-cracks through the use of double tempered glass. By choosing this solution, investors receive a guarantee of stable energy production for decades, while ensuring the highest level of fire and mechanical safety, placing this series at the technological forefront of the industry.

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 Efficiency23.18%
Voltage at Max Power (Vmpp)40.84 V
Current at Max Power (Impp)17.63 A
Open Circuit Voltage (Voc)48.58 V
Short Circuit Current (Isc)18.55 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.290%/°C
Temp. Coeff. Voc-0.250%/°C
Temp. Coeff. Isc0.045%/°C
NOCT-
Cell Technology
Cell TypeMonocrystalline
Cell Count132
BifacialYes
Bifaciality Factor80%
Dimensions & Weight
Length2384 mm
Width1303 mm
Height33 mm
Weight38.3 kg
Area3.11 m²
Power Density231.8 Wp/m²
Warranty
Product Warranty12 years
Performance Warranty30 years
End-of-Warranty Output87.4%
First Year Degradation1.00%
Annual Degradation0.40%/year
Key Specifications
23.18%
Efficiency
720 Wp
Power
-0.29%/°C
Temp Coeff
30 yrs
Warranty