en.Wedoany.com Reported - German solar tracker developer Sunoyster Systems has launched a lightweight solar module, PVbondi, for rooftop applications at The Smarter E trade fair. The module delivers a power output of 450 W with an efficiency of 22.2%, features a dual-glass design, and incorporates 96 monocrystalline silicon solar cells. Measuring 1780 mm × 1153 mm × 48 mm, it falls below the 2-square-meter threshold, weighs approximately 24 kg, and has a bifaciality factor of around 80%.
The module is designed to operate in a temperature range of -40°C to 85°C, with a temperature coefficient of 0.29%/°C. Sunoyster offers a 15-year product warranty and a 30-year performance warranty for the new module, which is expected to retain 87.4% of its initial output after 30 years. PVbondi is suitable for rooftop photovoltaic systems with limited load-bearing capacity. It comes with a plastic bottom structure at the factory and is installed on the roof via adhesive bonding, with the module positioned approximately 5 cm above the flat roof surface. Company founder Carsten Corino told pv magazine that this design improves backside ventilation compared to directly bonded lightweight modules, helping to enhance energy yield, while components such as cables and junction boxes can be installed on the backside, avoiding UV exposure.
The module's name derives from its high bonding strength. Although bonded only at a few points, each module achieves a bonding strength of up to 15 tons, eliminating the need for ballast on flat roofs. According to Sunoyster, this reduces roof load from approximately 50 kg per square meter to 5 kg. Eliminating the bottom structure and ballast reduces material usage and installation time, with the company stating that up to 350 modules can be installed in a single day. Sunoyster also uses an edge protection component, EdgeGuard, to protect the module from hail and mechanical stress during installation and operation. The company has patented the InterStructs bottom structure, a polymer profile that is non-conductive, thus eliminating the need for module frame grounding. Sunoyster supplies the bottom structure and edge protection device to an unspecified Chinese licensee, which manufactures the modules to specification.
Sunoyster states that insurers favor the highest fire safety rating—Class A under UL 790. Once certified, the PVbondi dual-glass module is expected to become the only bonded module globally to achieve this rating. The product is currently available for pre-order, with deliveries expected to begin in the fourth quarter after certification is completed. Sunoyster Systems, headquartered in Munich, Germany, was founded in 2011 and launched a concentrated solar power system for building applications in 2022.
