Bifacial Solar Panel | 590Wp | 39.70V | 20.85% | 2172x1303x30/35 mm | 40HQ: 720 / 620 Pieces
GRANKIA GT590W-120M bifacial topcon 590w solar module monocrystalline will maximize energy efficiency and durability for both residential and commercial solar power systems.
This module is engineered to capture sunlight from both the front and rear sides, significantly increasing energy yield. The bifacial design allows for additional power generation from reflected sunlight, making it particularly effective in environments with high albedo, such as snowy or sandy areas.
The solar module monocrystalline boasts an impressive power output of 590 watts, making it one of the most efficient solar panels in its class. This high efficiency ensures that more sunlight is converted into usable energy, reducing the number of panels required to meet your energy needs and lowering overall system costs.

TOPCon Technology
By using N-type TOPCon cells, this module achieves higher efficiency in converting sunlight into electricity. TOPCon technology enhances photon-to-electron conversion, which leads to better performance, especially in low-light and shaded conditions, and also increases the module’s reliability while reducing power degradation over time.
Durable Glass and Frame Design
The module is equipped with high-transmittance, low-iron tempered glass that enhances durability and resistance to environmental stressors. The robust aluminum frame provides additional protection against corrosion and mechanical damage, ensuring longevity and reliability.
Monocrystalline Cells
The module uses monocrystalline cells for enhanced efficiency and a sleek appearance.
Performance in Different Environments
Thanks to the Topcon technology and good temperature coefficients (specific data not given yet), it can perform well in high – temperature areas. For example, in desert regions where temperatures are often high during the day, this solar module can still generate electricity efficiently.
Bifacial Design
The bifacial design of this solar module allows it to capture sunlight from both the front and back sides, further increasing its energy generation capabilities. This feature is particularly advantageous in environments where reflections from the ground or nearby surfaces can contribute to additional energy production.
Easy Installation
With its standardized dimensions and lightweight design, the 590w solar module monocrystalline is easy to install and compatible with a variety of mounting systems. This makes it a versatile choice for both new and existing solar power systems.
Low LID
TOPCon N-type cells have high phosphorus content and minimal boron, which reduces the impact of boron-oxygen pairs and virtually eliminates Light-Induced Degradation (LID).
Module Efficiency: Up to 20.85% module efficiency, which means more electricity generated per square foot.
Low-Light Performance: Excellent performance in low-light conditions, making it suitable for various environments.
Temperature Coefficient: Optimized temperature coefficient ensures stable power generation even in high-temperature climates.
Power Degradation: Low power degradation rate, ensuring prolonged performance. For example, one solar panel has a degradation rate of 1% in the first year, followed by an annual degradation of only 0.40%.
1. Professional Installation
It is generally recommended to have solar panels installed by a professional team to ensure proper installation and avoid potential issues such as roof damage or incorrect connections.
2. Installation Guidelines
Refer to the installation manual for specific instructions and recommendations.
3. Angle and Spacing
Proper angle and spacing between panels are crucial for optimal output and to prevent overheating.
4. Mounting Structure
Ensure the mounting structure is solid and can withstand the expected load-bearing requirements.
5. Potential Issues
Be aware of potential problems such as inverter issues or the impact of shading on panel performance.
| Model No. | GT590W-120M |
| Warranty | |
| Product Warranty | 12 Years |
| Power Warranty | 30 Years warranty for Extra Linear Power Output |
| Electrical Data at STC | |
| Maximum Power (Pmax) | 590Wp |
| Voltage at Pmax (Vmpp) | 39.70V |
| Current at Pmax (Impp) | 14.86A |
| Open Circuit Voltage (Voc) | 47.80V |
| Short Circuit Current (Isc) | 15.72A |
| Panel Efficiency | 20.85% |
| Power Tolerance | 0 ~ +5W |
| Standard Test Conditions (STC): air mass AM 1.5, irradiance 1000W/m2, cell temperature 25°C Bifacial NamePlate Irradiance (BNPI): front 1000W/m2, rear 135W/m2, AM 1.5, cell temperature 25°C |
|
| Thermal Ratings | |
| Operating Temperature Range | -40 °C ~ 85 °C |
| Temperature Coefficient of Pmax | -0.24 %/°C |
| Temperature Coefficient of Voc | -0.22 %/°C |
| Temperature Coefficient of Isc | 0.047 %/°C |
| Maximum Ratings | |
| Maximum System Voltage | 1500VDC (IEC) |
| Maximum Series Fuse | 30A |
| Material Data | |
| Panel Dimension (H/W/D) | 2172x1303x30/35 mm |
| Weight | 35.3Kg |
| Cell Type | 210mm MBB N-TOPCon |
| Cell Number | 120Pcs (6x10x2) |
| Superstrate | High Transmission, AR Coated Heat Strengthened Glass |
| Substrate | Heat Strengthened Glass |
| Frame Type | Anodized Aluminium Alloy, Silver Color |
| Junction Box | Potted, IP68, 1500VDC |
| Connector Type | MC4 Connectors |
| Cable | 4.0mm2, 300mm / Customized |
| Packing Information | |
| Quantity / Pallet | 36 Pieces / Pallet (30mm) or 31 Piece / Pallet (35mm) |
| 40HQ Container Load | 720 Pieces / 620 Pieces |