The LONGi LR8-66HGD-620M is a premium 620W N-Type bifacial solar panel engineered to deliver exceptional energy production, long-term reliability, and industry-leading efficiency. Featuring LONGi's advanced High Performance Dual Cell (HPDC) technology and durable dual-glass construction, this module is designed for commercial, industrial, agricultural, and utility-scale solar installations where maximum performance is essential.
With module efficiencies of up to 23.0%, the LR8-66HGD-620M generates more power from the same installation area, helping reduce balance-of-system costs while increasing overall energy yield. Its bifacial design captures reflected sunlight from the rear of the module, providing additional energy generation when installed over reflective surfaces such as gravel, concrete, or light-coloured roofing.
The dual-glass construction enhances durability by providing superior protection against moisture, UV exposure, corrosion, and harsh environmental conditions. Combined with excellent low-light performance and a low temperature coefficient, the LR8-66HGD-620M consistently delivers high energy output throughout the day, even in challenging weather conditions.
Designed for modern high-voltage solar systems up to 1500V DC, this module is an ideal choice for installers and system owners seeking maximum return on investment and dependable performance over decades of operation.
Key Features
- 620W rated power output
- Advanced N-Type HPDC monocrystalline cell technology
- Bifacial design captures additional rear-side energy
- High module efficiency of up to 23.0%
- Durable dual-glass construction for enhanced longevity
- Excellent low-light performance
- Low temperature coefficient for improved hot-weather performance
- Positive power tolerance (0 to +3%)
- Maximum system voltage of 1500V DC
- IP68-rated junction box for superior weather protection
- Excellent mechanical strength with 5400Pa front load and 2400Pa rear load ratings
- Reduced first-year degradation of less than 1%
- Low annual degradation of only 0.4% from years 2 to 30
Dimensions:
2382 × 1134 × 30 mm
35KG
| Maximum output power | 620W |
| Open Circuit Voltage (VOC) | 48.78V |
| Short Circuit Current (ISC) | 16.05A |
| Voltage at Max Power (VMPP) | 40.91V |
| Current at Max Power (IMPP) | 15.16A |
| Maximum System Voltage | 1500 V |
| Cell Type | N-type i-TOPCon Monocrystalline |
| Test Conditions | Irradiance at 800W/m2, Ambient Temperature 20°C, Wind Speed 1m/s |
| Warranty | 12 year Product Workmanship Warranty, 25 year Power Warranty |
