Innovative Vertical Solar System
Longi, a Chinese solar PV manufacturer, has successfully carried out the first vertical installation of all-black solar modules in Japan. This innovative approach aims to overcome the challenges posed by generation losses during the snowy winters in the region.
The installation involved Longi’s 2.58 kW Hi-MO X6 all-black solar modules being mounted on a building owned by the Tomita company, located on Hokkaido, the northernmost of Japan’s main islands.
The prolonged winter season in Hokkaido often leads to significant efficiency issues for rooftop solar installations due to heavy snowfall. Even with the ideal installation angle of 38° in Sapporo, there can be up to a 90% reduction in power output during snowy months. Increasing the angle to 75° only mitigates this to a 50% loss in power generation.
Local regulations prohibiting rooftop snow removal for safety reasons have further compounded the challenges, resulting in inconsistent solar generation and lower returns on investment for rooftop solar projects in Hokkaido.
To address these issues, the installation of vertical solar panels was considered. However, concerns were raised regarding the aesthetic and architectural impact. In response, Tomita opted for Longi’s all-black solar panels.
Longi’s Hi-MO X6 all-black modules utilise HPBC cell technology, featuring a black visual effect that enhances light absorption and boosts power generation conversion efficiency.
The sleek all-black design not only improves performance but also seamlessly integrates with the building’s façade, achieving a harmonious balance between power generation and modern architectural aesthetics, as described by Longi.
