石川産業 List of Products and Services

■Solar power generation and business management are changing: A new tool for measuring solar radiation has been developed with the same structure as solar cell modules. ■An alternative to pyranometers: Measuring solar radiation with the same structure as solar cell modules. ■Accurate monitoring of power generation: Eliminating about 2% of errors to further improve business accuracy. ■Early detection of panel degradation: Accurate measurement of power generation also enhances understanding of panel performance. ■Streamlining on-site maintenance management: Temperature data can be collected simultaneously, reducing time, costs, and personnel for maintenance. ■No need for separate installation and management of thermometers: A dual-purpose device that functions as both a solar radiation monitor and a thermometer, improving measurement accuracy. ■Realizing IoT power generation monitoring: An IoT and cloud-based monitoring system is also planned.

GaAs-type (III-V compound semiconductor) cells have spectral sensitivity characteristics that are much more similar to perovskite-type cells compared to conventional Si-type cells, and they also excel in stability. GaAs-type cells show significantly better spectral mismatch when compared to measurements using the combination of the commonly used "Si-type cell" and the colored glass filter KG-5 as a reference for perovskite-type cells. ReRa Solutions in the Netherlands is one of the few companies manufacturing high-quality GaAs-type reference solar cells, and we have established a system to provide stable supply and technical support within Japan, leveraging our know-how in the manufacturing and sales of our own reference solar cells. Our reference solar cells also comply with the standards of the WPVS (World Photovoltaic Scale) and the requirements of IEC 904-2. Additionally, cell calibration is conducted at the Radboud University Nijmegen PV Measurement Facility and is traceable to the NREL in the United States.