Solar Module Longi Hi-MO X10 Scientist LR7-72HVD 645M (PU 36) - LR7-72HVD-645M

The module uses 144 monocrystalline half-cells (Half-Cut), where each cell is divided into two halves. This reduces ohmic losses and minimizes shading effects. In addition, the module is bifacial: the transparent rear side converts reflected ambient light into additional electricity, which increases the overall yield.

In the Longi LR7-72HVD-645M, the cells are embedded between two 2.0 mm thick glass panes instead of behind a plastic film. This better protects the cells from moisture and mechanical stress, reduces micro-crack formation, and enables the long 30-year performance warranty.

A 645 Wp module in Austria generates around 620 to 720 kWh per year, depending on orientation and location. At an electricity price of 25 cents/kWh, this corresponds to an annual saving of approximately 155 to 180 Euros per module — the value can be even higher due to the bifacial additional yield from the rear side.

For a typical annual consumption of 4500 to 5500 kWh, about 8 to 12 of these 645 Wp modules are sensible, resulting in approximately 5.2 to 7.7 kWp of system output. The exact number depends on the roof area, orientation, and the proportion of self-consumption.

Yes. The module is loadable up to 5400 Pa snow load and 2400 Pa wind load, making it suitable for snowy regions. The glass-glass construction and fire protection class IEC Class C make it robust against temperature fluctuations and weather conditions.

Longi is one of the world's largest manufacturers of monocrystalline solar modules and wafers and is considered a technology leader in high-efficiency cells. The Hi-MO-X series is aimed at demanding rooftop and open-field installations with high efficiency.

The Longi Hi-MO X10 Scientist LR7-72HVD-645M is available from SOLARVIC via solarvic.at. For questions about design or the appropriate number of modules, the SOLARVIC team will be happy to help.