JA Solar JAM78D40 620W LB N-Type Bifacial Panel for Net Metering

Description

The JA Solar JAM78D40 620W LB N-Type Bifacial Solar Panel (DeepBlue 4.0 Pro Series) is a commercial and utility-grade photovoltaic module engineered for high-yield power generation.

Utilizing 156 (6×26) N-type Bycium+ half-cut monocrystalline cells, this module adopts a double-glass bifacial architecture. It absorbs direct solar irradiance on the front glass while capturing reflected light from surrounding surfaces on the rear side, significantly boosting overall energy production and lowering the Levelized Cost of Energy (LCOE).

In Bangladesh, where commercial electricity tariffs are high and factory rooftop space is valuable, this 620W high-power panel provides maximum wattage density. Its low temperature coefficient (-0.30%/°C) ensures stable electricity generation during peak summer heat, making it an excellent choice for net-metering installations under local grid standards.

Key Features

• N-Type TOPCon Bycium+ Technology: Advanced N-Type cell formulation provides immunity to LID/LeTID and delivers up to 22.2% module efficiency.
• Bifacial Dual-Glass Construction: 2.0mm + 2.0mm tempered glass structure yields up to 25% additional power harvest from rear-side light reflection.
• High Power Output (620W): High power density reduces balance-of-system (BOS) racking, cabling, and mounting labor costs per installed watt.
• 1500V DC System Voltage Rating: Supports longer panel string configurations for commercial string inverters.
• Heavy Mechanical Load Rating: Certified to withstand 5400 Pa front static load and 2400 Pa rear wind pressure.
• IP68 Weatherproof Junction Box: Fully potted junction box containing 3 bypass diodes for thermal overload protection and water resistance.

Technical Advantages

• High Efficiency: Delivers up to 22.2% STC module efficiency, generating significantly more kilowatt-hours per square meter than standard P-Type PERC panels.
• Durable Construction: Anodized aluminum alloy frame combined with double tempered glass eliminates moisture ingress and PID degradation.
• Safety Protection: Anti-PID cell processing and Class II electrical safety ratings ensure long-term operation in high-voltage industrial setups.
• Energy Saving: Higher conversion yield lowers the overall cost of energy generation for long-term power purchase agreements (PPA).
• Easy Maintenance: Anti-soiling glass surface reduces dust buildup and relies on natural rain for self-cleaning.

Applications

• Residential: Large rooftop solar systems, luxury villas, and private estate net-metering projects.
• Commercial: Shopping malls, retail superstores, office towers, and cold storage units.
• Industrial: Garment factories, textile mills, manufacturing plants, and logistics warehouses.
• Factory: On-grid factory rooftop solar arrays and carport shade structures.
• Office: Corporate headquarters, IT parks, and administrative building rooftops.
• Project Installation: Utility-scale ground-mounted solar farms, agro-voltaics, and microgrid setups.

Technical Specification Table