Tongwei TWMNH-48HW470 Solar Module

N-Type refers to the doping of silicon cells. Compared to classic P-Type cells, N-Type cells show lower light-induced degradation, better low-light performance, and a more favorable temperature coefficient. In combination with the Half-Cut design, where cells are cut in half, internal resistance losses decrease, and shading tolerance increases. The Tongwei TWMNH-48HW470 thus achieves a module efficiency of 23.5%.

In glass-glass construction, the solar cells are embedded between two glass panes instead of between glass and a backsheet. This makes the module mechanically more stable, less susceptible to moisture and UV aging, and results in lower annual power degradation. As a result, the yield remains more stable over the entire lifespan than with glass-film modules.

With typical Austrian irradiation values, a 470 Wp module delivers around 450 to 550 kWh per year, depending on orientation, inclination, and location. At an electricity price of 25 ct/kWh, this corresponds to savings of approximately 112 to 138 euros annually per module, provided the generated electricity is consumed by the owner.

For a typical annual consumption of 4,500 to 5,500 kWh, the calculated requirement is approximately 9 to 12 modules, each with 470 Wp, meaning about 4.2 to 5.6 kWp system output. The exact number depends on the self-consumption rate, roof area, and orientation.

The stable glass-glass construction with an all-round aluminum frame is designed for typical snow and wind loads in alpine regions and can withstand hail and strong temperature fluctuations. The N-Type cells maintain good efficiency even at high module temperatures. Please refer to the datasheet for the specifically permissible pressure and suction loads in Pa.

Tongwei is an internationally active manufacturer in the solar industry with extensive in-house manufacturing depth along the photovoltaic value chain, from silicon and cells to the finished module. The company is one of the largest producers of solar cells worldwide and offers modules with modern N-Type cell technologies.

You can purchase the Tongwei TWMNH-48HW470 online from SOLARVIC at solarvic.at. The SOLARVIC team will be happy to assist you with any questions regarding the design of your system.