The LR7-72HVD-640M model has a rated power of 640 W with an efficiency of approximately 23.7%, ensuring maximum energy efficiency per square meter of installed area. This is especially important for limited installation space or large systems where panel efficiency impacts project profitability.

Bifacial Gain

Thanks to its bifacial architecture and the use of Hi-MO X10 technology, the module can generate additional energy from reflected light on the rear side, often increasing overall energy efficiency by +5–20% depending on installation conditions (coating type, orientation, and environment).

Modern Cellular Technologies

The PV module is constructed of 144 monocrystalline PV cells arranged in a 6×24 configuration, using BC-Cell and N-type fast-contact materials from leading silicon suppliers. This approach reduces power degradation and maintains stable performance for decades of operation.

Reliability and Performance

The LR7-72HVD-640M module features a robust design with double-layer tempered glass (2.0 + 2.0 mm), providing high mechanical resistance to snow loads (up to 5400 Pa) and wind loads (up to 2400 Pa). The panel is designed for a wide operating temperature range from -40 to +85°C, ensuring stable operation even in harsh climates.

The enclosure is made of anodized aluminum alloy, and the junction box is IP68 rated, providing reliable protection from dust and moisture, even under intensive use.

Compatibility and Integration

Longi LR7-72HVD-640M solar panels are designed for use with modern grid-tied, hybrid, and stand-alone inverters, supporting system voltages up to 1500 V and standard MC4-compatible connectors for easy installation.

This module is ideal for both individual sites and large photovoltaic power plants—both grid-tied and in stand-alone systems with energy storage.