Description
LONGi Hi-MO 7 LR8-66HGD-615M | 615W Bifacial Solar Panel
High-efficiency half-cell module built for utility-scale and large commercial solar projects.
The Hi-MO 7 LR8-66HGD-615M delivers 615W of power at an industry-leading 22.8% module efficiency, powered by LONGi's advanced HPDC (High Performance Density Cell) technology. With high bifaciality and an excellent temperature coefficient, this panel is engineered to maximize energy yield across its full lifecycle — backed by LONGi's proven quality and a 30-year linear power warranty.
Why Choose This Panel
- 22.8% Module Efficiency — More power per square foot, reducing land and mounting costs on large installations
- HPDC Cell Technology — Advanced half-cell (132-cell, 6×22) design lowers operating temperature and boosts output
- High Bifaciality (80±5%) — Captures reflected light from the rear side for a meaningful energy yield bump
- Low Degradation — Less than 1% power loss in year one, just 0.4% annually from year 2–30
- Built to Last — Dual 2.0+2.0mm heat-strengthened glass, anodized aluminum frame, IP68-rated junction box
- Storm & Hail Rated — Withstands 5400Pa front / 2400Pa rear static loading and 25mm hailstones at 23m/s
- Extended Warranty Coverage — 12 years on materials and processing, 30 years on linear power output (87.4% guaranteed at year 30)
Key Electrical Specifications (STC)
| Parameter | Value |
|---|---|
| Maximum Power (Pmax) | 615 W |
| Module Efficiency | 22.8% |
| Open Circuit Voltage (Voc) | 48.58 V |
| Short Circuit Current (Isc) | 16.00 A |
| Voltage at Max Power (Vmp) | 40.71 V |
| Current at Max Power (Imp) | 15.11 A |
| Power Tolerance | 0 ~ +3% |
Mechanical & Build Specifications
| Parameter | Value |
|---|---|
| Dimensions | 2382 × 1134 × 30 mm |
| Weight | 32.5 kg |
| Cell Configuration | 132 half-cells (6×22) |
| Glass | Dual glass, 2.0mm + 2.0mm heat-strengthened |
| Frame | Anodized aluminum alloy |
| Junction Box | IP68-rated, three diodes |
| Output Cable | 4mm², +400/-200mm (custom lengths available) |
| Max System Voltage | DC 1500V (IEC/UL) |
| Max Series Fuse Rating | 35 A |
| Operating Temperature | -40°C to +85°C |
| Fire Rating | UL Type 29 / IEC Class C |
Certifications
IEC 61215, IEC 61730, UL 61730, IEC 62941, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018
Ideal For
Utility-scale solar farms, ground-mount commercial arrays, and large installations where high efficiency, durability, and long-term bankable performance matter most.
Specifications per manufacturer datasheet (LONGi, rev. 20251028 V3.2). Actual performance may vary based on site conditions. Specifications subject to change by manufacturer without notice.