LONGi Hi-MO X10 EcoLife 485 Wp HPBC 2.0 Double Glass Bifacial Solar Panel LR7-54HVD-485

LONGi Hi-MO X10 EcoLife 485 Wp HPBC 2.0 Double Glass Bifacial Solar Panel LR7-54HVD-485

The LONGi Hi-MO X10 EcoLife is a high-quality bifacial double glass solar panel (glass-glass) of the latest generation, based on the innovative HPBC 2.0 technology – LONGi's most advanced back contact cell technology. This enables an exceptionally high output of 485 watts and a module efficiency of up to 23.8 %. With a bifaciality factor of 70 ± 5 %, the panel additionally captures reflected light on the rear side – resulting in measurably higher overall energy yields throughout the entire service life.

The panel is built with a robust double glass construction (glass-glass) – with a 2.0 mm front and a 1.6 mm rear pane of semi-tempered glass. This protects the panel significantly better against moisture, UV radiation and mechanical stress – resulting in a considerably longer service life than conventional panels.

The LONGi Hi-MO X10 EcoLife is explicitly designed as a premium solution for high-end residential buildings. Thanks to an optimised temperature coefficient of just −0.26 %/°C, the panel maintains its output even in summer. With a 15-year product warranty and a 30-year linear performance warranty, a guaranteed output of at least 88.85 % after 30 years and a maximum annual degradation of just 0.35 %, performance remains exceptionally stable throughout the entire service life. Mechanically, the panel withstands snow loads of up to 5,400 Pa and wind loads of up to 2,400 Pa.

What is HPBC 2.0 & Back Contact Technology?

HPBC 2.0 stands for High Performance Back Contact 2.0 – LONGi's advancement of back contact cell technology. In conventional solar panels, electrical contacts run visibly across the front surface of the cell. In a back contact module, all contacts are fully relocated to the rear side – leaving the entire front surface available for uninterrupted light absorption. The result: higher power generation in all lighting scenarios, optimised anti-shading protection and the avoidance of localised overheating – for greater safety and longevity.

What is Bifaciality?

A bifacial solar panel generates electricity not only on the front side but also on the rear side – by capturing reflected light from the surrounding surface and converting it into additional energy. The stated rated output of 485 Wp refers exclusively to the front side under standard test conditions (STC) – the rear side delivers additional yield on top, depending on the installation situation. The bifaciality factor of 70 ± 5 % indicates how efficiently the rear side performs relative to the front side.

To better reflect real-world yield, the BNPI value (Bifacial Nominal Power at Irradiance) is used. The panel is measured under defined conditions: 1,000 W/m² on the front side and an additional 135 W/m² on the rear side at 25 °C. The BNPI value therefore significantly exceeds the STC rated output and provides a more realistic indication of actual yield under field conditions. The exact additional yield depends on the ground surface, mounting height and tilt angle – exact BNPI values can be found in the datasheet.

Features:

• 485 Wp output & up to 23.8 % efficiency – HPBC 2.0 back contact technology
• Bifacial double glass (glass-glass) – 70 ± 5 % bifaciality for additional yield from the rear side
• Back contact architecture – maximum light yield, optimised anti-shading protection
• Low temperature coefficient – only −0.26 %/°C for more output in summer
• 15-year product warranty & 30-year performance warranty – min. 88.85 % output after 30 years

Further technical details can be found in the datasheet.