GM7-72hgd-620m 620W Hpbc 2.0 144 Half-Cell Bifacial Double Glass Solar Panel

HPBC 2.0 Back-Contact Cell: LONGi's proprietary HPBC 2.0 N-type back-contact technology delivers up to 23.1% module efficiency for maximum energy density per square meter

High Power Up to 625W: Rated power ranges 620 with a 0~3% positive power tolerance, ideal for space-saving utility-scale power plants.

Bifacial Double Glass 2.0+2.0mm: Dual 2.0mm semi-tempered glass construction with 80+/-5% bifaciality captures rear-side light for 5-25% extra yield on reflective ground.

Excellent Temperature Performance: Low power temperature coefficient of -0.230%/deg C and bifacial gain keep output high under intense sun and high ambient heat.

144 Half-Cut Cells: 6x24 half-cell layout reduces current, lowers resistive loss and hot-spot risk, and improves shading tolerance and anti-crack durability.

Ultra-Low Degradation: Only <1% first-year degradation and 0.40% annual linear degradation, protecting long-term ROI across the plant lifetime.

30-Year Linear Power Warranty: Backed by a 12-year product/material warranty and 30-year linear power-output warranty for bankable, long-term performance.

Robust Mechanical Strength: Withstands +5400Pa (snow) / -2400Pa (wind) static load and hail impact of diameter 25mm at 23m/s, ensuring field reliability.

Premium IP68 Junction Box & MC4 Evo2: Split-type IP68 box with 3 bypass diodes and MC4 Evo2 connectors guarantee safe, low-loss, weatherproof connections.

Full International Certifications: Compliant with IEC61215, IEC61730, UL61730; ISO9001/14001/45001; IEC62941; certified by TUV, TUV Rheinland, CE, SUD and US standards.