LONGi Hi-MO 7 LR8-54HGBB 500W N-Type Bifacial Dual-Glass Solar Panel

What it is: A premium, low-degradation panel for residential and commercial installations — backed by an industry-leading 25-year product warranty.

Key specs:

• Power output: 500W | Module efficiency: 22.5%
• Cell technology: N-type HPDC | Design: bifacial dual-glass
• Max system voltage: 1,500V
• Temperature coefficient: -0.28%/°C (Pmax)
• Junction box: IP68-rated, factory-attached 4mm² cables

Degradation performance:

• Under 1% power loss in year 1
• Just 0.4%/year from years 2–30 — among the lowest in the lineup

Mechanical ratings: Front snow load 5,400 Pa | Rear wind load 2,400 Pa — built for harsh climates

Built for: Residential rooftops, commercial installations, ground-mounted arrays, agricultural and off-grid systems, net-metering setups

Why it matters:

• N-type HPDC cells = higher efficiency, better low-light performance than P-type
• Bifacial design = extra output from reflected light on the rear
• Industry-low annual degradation = more retained output over the panel's lifetime
• Dual-glass construction = better moisture/fire resistance, longer lifespan

Warranty: 25 years product | 30 years linear power performance