Skip to main content
590Wp
Q-Cells Q.PEAK DUO XL-G11S.3 / BFG 590
Q-Cells Review

Q.PEAK DUO XL-G11S.3 / BFG 590

MonocrystallineBifacial
Datasheet
21.10%
Efficiency
211.3 Wp/m²
Power Density
-0.340%/°C
Temp. Coeff. Pmax chart
501W from 590W
Power after 30 years
Smart Insights (data-driven)
  • Efficiency of 21.1% is 0.7pp below the database median (21.8%)
  • 211.3 W/m² power density is 6.4 W/m² below database median (217.7 W/m²) - requires larger installation area
  • -0.34%/°C temperature coefficient - 0.04pp worse than database median (-0.30%/°C), expect higher hot weather losses
  • Weight of 34.9 kg is 8.4 kg above database median (26.5 kg) - verify structural support
  • Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof
Performance Profile
Price Offers 0
Shop Country Price Price/kWp
Series Q.PEAK DUO XL-G11S SERIES 8 variants
Efficiency Range 21.1% - 21.7%
Avg. Efficiency 21.40%
Technology PERC
Dimensions 2462 × 1134 mm
Show series description

The Q-Cells Q.PEAK DUO XL-G11S series are bifacial modules in a double glass configuration, designed for commercial installations and PV farms where maximizing energy yield from the same surface area and predictable long-term production are key. Thanks to the double-sided construction, the panel can also utilize reflected light from the ground, effectively boosting energy production in ground-mounted systems and trackers, thereby reducing the cost of producing 1 kWh.

Against the backdrop of numerous competitive modules, it stands out with the Q.ANTUM DUO technology featuring a modern cell connection method and half-cell format, which minimizes losses and improves performance under partial shading. In practice, this addresses typical issues in large installations – uneven irradiance, operation under poorer light conditions, and yield drops at high temperatures.

Another advantage is the weather-resistant structure and load-bearing capacity, as well as the long warranty package, which is important for investors, developers, and companies expecting stable project parameters for years to come.

Panels from the same series differ mainly in power output while having identical dimensions. Learn why →
Electrical Parameters (STC)
Nominal Power (Pmax)590 Wp
Module Efficiency21.10%
Voltage at Max Power (Vmpp)44.96 V
Current at Max Power (Impp)13.12 A
Open Circuit Voltage (Voc)53.60 V
Short Circuit Current (Isc)13.74 A
Max System Voltage1500 V
Temperature Coefficients
Temp. Coeff. Pmax-0.340%/°C
Temp. Coeff. Voc-0.270%/°C
Temp. Coeff. Isc0.040%/°C
NOCT42°C
Cell Technology
Cell TypeMonocrystalline
Cell Count156
BifacialYes
Bifaciality Factor70%
Dimensions & Weight
Length2462 mm
Width1134 mm
Height35 mm
Weight34.9 kg
Area2.79 m²
Power Density211.3 Wp/m²
Warranty
Product Warranty12 years
Performance Warranty30 years
End-of-Warranty Output85.0%
First Year Degradation2.00%
Annual Degradation0.45%/year
Key Specifications
21.10%
Efficiency
590 Wp
Power
-0.34%/°C
Temp Coeff
30 yrs
Warranty
Back to Panel Database
Compare Now