Bifacial Solar Module TWMNH 66hd620–640w

Bifacial Solar Module TWMNH 66HD620–640W: High performance, versatility and reliability for commercial and industrial applications

The TWMNH 66HD620–640W is an N-type bifacial module, developed for projects that require energy efficiency, durability and adaptability. Ideal for applications on commercial rooftops, solar carports, ground-mounted plants and industrial facilities, this model combines high power with rear capture technology, increasing the total energy generation per module.

With a nominal power of up to 640W and the possibility of reaching up to 800W with bifacial gain, the module is a strategic choice for those looking to reduce Levelized Cost of Energy (LCOE) and maximize system productivity over decades.

Key Benefits of the TWMNH 66hd620–640w Bifacial Solar Module

• High Power: Up to 640W per module on the front face, with up to 25% additional gain from the rear face.
• N-Type Cells: Low degradation technology (0.4% per year) and greater long-term reliability.
• High energy efficiency: Up to 23.7% efficiency under standard conditions (STC).
• Superior Bifaciality: Efficient capture of light reflected from the ground, with bifaciality ≥ 70%.
• Extended warranties: 12-year product warranty and 30-year linear performance warranty.
• Wide application: Compatible with industrial, commercial projects and structure-mounted systems.

Technical Specifications

Electrical Performance

STC Conditions

• Maximum power: 620W – 640W
• Efficiency: up to 23.7%
• Voc: ~49.0–49.5 V
• Isc: ~16.2–16.6 A
• Vmp: ~41.4–41.8 V
• Imp: ~14.95–15.38 A

NMOT Conditions

• Power: 466W to 483W
• NOCT: 45 ± 2°C

Quality Certifications

• Management Systems: ISO 9001, ISO 14001, ISO 45001
• Technical Standards: IEC 61215 / 61730, UL 61730
• Specific Tests:
  • Salt mist (IEC 61701)
  • Ammonia (IEC 62716)
  • Dust and sand (IEC 60068-2-68)
• Other certifications: CE, TÜV, RETIE, JPEA, CQC, among others

Recommended Applications

• Commercial and industrial rooftops
• Solar carports
• Medium and large ground-mounted plants
• High reflectivity environments for optimizing bifacial generation

Colibri One, as the official representative of Tongwei in Brazil, connects integrators and distributors to high-performance solar technologies with competitive commercial conditions and specialized technical support.

📩 Contact us to learn more about this and other high-efficiency solar modules.