LONGi 615W Hi-MO 7 HPDC Bifacial Silver Frame Solar Panels
- 615 W bifacial solar panel for commercial, industrial and utility-scale solar PV systems.
- 22.8% module efficiency, N-type HPDC technology and dual 2 mm heat-strengthened glass.
- 1,500 V DC system rating, 5,400 Pa front-side load rating and 30-year linear power warranty.
LONGi 615W Hi-MO 7 HPDC bifacial solar panel
The LONGi LR8-66HGD-615M is a 615 W Hi-MO 7 bifacial solar panel for high-capacity commercial, industrial and utility-scale PV arrays. Its N-type HPDC cell technology, 22.8% module efficiency and 2,382 × 1,134 mm format help maximise installed capacity while reducing module count and associated mounting and DC connections.
The dual-glass bifacial design can generate from both sides where reflected light reaches the rear of the panel. Rear-side contribution depends on the mounting arrangement, spacing, shading, ground surface and site conditions, so it should be assessed as part of the project design.
Key features
- 615 W rated output: Suitable for large rooftop, ground-mounted, solar carport and utility-scale solar PV projects.
- N-type HPDC cell technology: Advanced HPDC technology with 132 half-cells in a 6 × 22 configuration.
- 22.8% module efficiency: High power density for projects where installed capacity needs to be maximised.
- Dual-glass bifacial construction: 2.0 mm heat-strengthened glass on both sides, with 80 ± 5% stated bifaciality.
- Long-term warranty cover: 12-year materials and processing warranty, plus a 30-year extra linear power-output warranty.
Where to use
The LONGi 615W Hi-MO 7 HPDC bifacial solar panel is suitable for solar farms, industrial estates, warehouses, logistics sites, agricultural buildings, commercial rooftops, ground-mounted arrays and large solar carports. It is best used in professionally designed, high-voltage PV systems.
At 2,382 mm long and 33.5 kg per module, this is a large-format panel. Use a mounting system approved for the module dimensions, frame profile, loading and clamping zones. A structural assessment and professional installation are recommended.
Energian can help with module quantities, bifacial-array layout, inverter string configuration, mounting compatibility, DC protection and complete solar PV system planning. Where required, installation can be arranged through trusted partners.
Technical specifications
| Manufacturer | LONGi |
| Series | Hi-MO 7 |
| Module model | LR8-66HGD-615M |
| Module power range | 595–625 W |
| Module type | Bifacial N-type HPDC dual-glass module |
| Rated maximum power (Pmax) | 615 W |
| Module efficiency | 22.8% |
| Power output tolerance | 0 to +3% |
| Open-circuit voltage (Voc) | 48.58 V |
| Short-circuit current (Isc) | 16.00 A |
| Voltage at maximum power (Vmp) | 40.71 V |
| Current at maximum power (Imp) | 15.11 A |
| STC test conditions | AM1.5, 1,000 W/m², 25°C |
| Pmax test uncertainty | ±3% |
| Cell orientation | 132 half-cells (6 × 22) |
| Module dimensions | 2,382 × 1,134 × 30 mm |
| Dimensional tolerance | Length ±2 mm; width ±2 mm |
| Weight | 33.5 kg |
| Glass | Dual glass, 2.0 + 2.0 mm heat-strengthened glass |
| Frame | Anodised aluminium alloy frame, silver finish |
| Junction box | IP68, three diodes |
| Output cable | 4 mm²; +400 mm / -200 mm; ±1,400 mm length can be customised |
| Operating temperature | -40°C to +85°C |
| Maximum system voltage | 1,500 V DC (IEC/UL) |
| Maximum series fuse rating | 35 A |
| Protection class | Class II |
| Bifaciality | 80 ± 5% |
| Fire rating | UL Type 29; IEC Class C |
| Temperature coefficient of Isc | +0.045%/°C |
| Temperature coefficient of Voc | -0.230%/°C |
| Temperature coefficient of Pmax | -0.280%/°C |
| Front-side maximum static load | 5,400 Pa |
| Rear-side maximum static load | 2,400 Pa |
| Hailstone test | 25 mm hailstone at 23 m/s |
| First-year power degradation | Less than 1% |
| Annual power degradation, years 2–30 | 0.4% |
| Guaranteed power at year 30 | 87.40% |
| Materials and processing warranty | 12 years |
| Extra linear power-output warranty | 30 years |
| Certifications | IEC 61215, IEC 61730, UL 61730 and IEC 62941 |
Documents available for download
Shipping
Available for delivery throughout the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, please contact us on +44 2080640335 or info@energian.co.uk for a quote.
UK expert support
UK expert support is available for module selection, bifacial-array layout, mounting compatibility, inverter string design and complete commercial solar PV system planning. Contact Energian by phone, email or live chat, or visit our office for an in-person consultation.