MonocrystallinePERC
GCL System Integration undefined 665

GCL System Integration • gcl m1266gdf 655-675w

gcl m1266gdf 655-675w 665665W

PERC
Region:China
Region shows where the seller or factory is located. Most ship globally, and all listed suppliers should be able to ship to your current location.
665W
Power Output
21.4%
Efficiency
2384 x 1303
Dimensions (mm)
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Key Features

  • Bifacial Dual Glass Monocrystalline Module
  • 655-675W Maximum Power Output
  • 21.7% Maximum Module Efficiency
  • 0~+5W Power Output Guarantee
  • GCL Delivers Reliable Performance Over Time
  • Ensured PID Resistance through Cell Process and Module BOM Control
  • Fire Class A and Type 3/13 (UL61730)
  • Resistant to Salt & Ammonia Corrosion
  • Wind Load: 2400Pa / Snow Load: 5400Pa

GCL System Integration 665 Panels: What Your System Looks Like

Based on a standard 10kW residential installation

10kW System Size
16 Panels
Estimated Roof Area
538 sq.ft. (50 m²)
Avg. Yearly Production
11,500 kWh
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Electrical Data (STC)

Maximum Power (Pmax)665 W
Module Efficiency21.4 %
Voltage at Pmax (Vmp)38.2 V
Current at Pmax (Imp)17.41 A
Open Circuit Voltage (Voc)46 V
Short Circuit Current (Isc)18.36 A

Mechanical Data

Dimensions2384 x 1303 x 33 mm
Weight38.5 kg
Cell TypeMonocrystalline
Number of Cells132
Front Glass2 mm
FrameAnodized Aluminium

Temperature Ratings

Temperature Coefficient of Pmax-0.35 %/°C
Temperature Coefficient of Voc-0.28 %/°C
Temperature Coefficient of Isc0.048 %/°C
Operating Temperature Range-40 - 85 °C

Similar Products

1303 x 2384 mm
Roof Fit Tool

Will These Panels Fit Your Roof?

Don’t guess your solar potential. Our Roof Layout Designer uses the exact dimensions of the GCL System Integration 665 (665W modules) to map out your system. Visually plan your array to see exactly how many modules your roof can support based on its specific footprint.

Precision Layout Preview: See exactly how the 665W modules sit on your roof.
Accurate Technical Spacing: Factors in real-world gaps and mounting rails.
Instant System Sizing: Automatically calculates total kW output for this specific panel.
Optimization Tips: Suggestions to maximize your roof’s energy density.
Map This Panel on My Roof

Ideal Use Case

The GCL System Integration 665 is designed for specific solar energy applications. This panel is an excellent choice if you:

Require ultra-high output 665W panels for commercial installations
Prioritize high efficiency performance
Want proven monocrystalline technology for better performance
Install on commercial buildings with ample roof space

Don’t guess your solar setup — calculate it first!

Take our Solar Quiz to get a personalized recommendation for panels, inverter, battery capacity, and system size — before you spend money on the wrong setup.

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Product FAQ

How many GCL System Integration 665 panels do I need for my home?

The number of panels depends on your energy consumption and roof area. At 665W per panel, a typical 10kW residential system requires about 16 modules. Use our Solar Roof Calculator to get a precise layout based on your actual roof dimensions.

What is the efficiency of GCL System Integration 665?

This panel has an efficiency of 21.4%, using PERC cell technology. Higher efficiency means more electricity per square meter, which is especially valuable when roof space is limited.

What are the dimensions of the GCL System Integration 665?

The module dimensions are 2384mm × 1303mm × 33mm. Always account for these measurements plus fire setbacks and mounting clearances when planning your solar layout.

Is GCL System Integration 665 compatible with standard inverters?

Yes, these panels work with most string and hybrid inverters. However, you must check the Voc (Open Circuit Voltage) and Imp (Current at Max Power) against your inverter's MPPT specs.