or $19.78/mo for 12 mo at 9.96% APR with 
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LONGi 620W N-Type Bifacial Solar Panel
The LONGi LR8-66HGD-620M LR8-66HGD is a 620W N-Type bifacial solar panel delivering 23.0% module efficiency with a durable dual-glass, clear-backsheet build. Its 132 half-cut cells, -0.28%/°C temperature coefficient, and 1500 VDC system rating provide strong, reliable output backed by a 30-year performance warranty.
$225.00
($0.36/W)
Available to ship Over 500 ready to ship
Ships in 1–3 business days.
Delivers in 2–5 business days
Available for pickup 6 locations
Pickup across our network
Ready for pickup as early as Mon, Oct 19
— we’ll tell you about drops and promotions.
Volume pricing
620 W
1 – 9
$225.00
$0.36 / W
10 – 19
$213.75
$0.34 / W
20 – 35
$207.00
$0.33 / W
36
$198.00
$0.31 / W
72+
$191.25
$0.30 / W
Applied automatically at checkout.
Contact us for larger orders
The LONGi LR8-66HGD-620M LR8-66HGD is a 620W bifacial solar panel built on N-Type cell technology, delivering 23.0% module efficiency for utility, commercial, and large residential arrays. It combines 132 half-cut cells, a clear backsheet, and a silver 30mm frame to capture rear-side irradiance while maintaining a low -0.28%/°C temperature coefficient. Rated to 1500 VDC with an IP68 enclosure, it performs reliably across demanding Canadian climates.
Key Features:
- 620W output, 23.0% module efficiency
- N-Type bifacial cells, clear backsheet
- Temp coefficient -0.28%/°C (Pmax)
- Voc 48.78V / Vmp 40.91V
- Isc 16.05A / Imp 15.16A, 35A fuse
- 132-cell (half-cut 66), 93.8″ x 44.6″ x 1.2″
- Silver 30mm frame, 74 lb weight
- 1500 VDC system, IP68, MC4 connectors
- Wind 5400 Pa / Snow 2400 Pa, -40°F to 185°F
- 12-year product, 30-year performance warranty
Ideal for utility-scale, commercial, and high-yield residential installations where bifacial gain and low degradation matter. With first-year degradation of 1% and 0.4% annually, it suits ground mounts and reflective surfaces, integrating with standard MC4 wiring and 1500 VDC string inverters or optimizers. Order the LR8-66HGD-620M (also listed as LR866HGD620M) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.
| Rated power (STC) | 620 W |
|---|---|
| Open-circuit voltage (Voc) | 48.78 V |
| Short-circuit current (Isc) | 16.05 A |
| Voltage at max power (Vmp) | 40.91 V |
| Current at max power (Imp) | 15.16 A |
| Module efficiency | 23.0 % |
| Cell technology | HPDC |
| Cell count | 132 (6×22) |
| Max system voltage | DC1500V (IEC/UL) |
| Temp coefficient of Pmax | -0.280 %/°C |
| Dimensions (L×W×H) | 2382×1134×30 mm (93.8 × 44.6 × 1.2 in) |
| Weight | 32.2 kg (71 lb) |
| Product warranty | 12 yr |
| Performance warranty | 30 yr |
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