Reuse of used panels
Since the introduction of the Feed-in Tariff (FIT) system for renewable energy in 2012, solar power generation has been widely adopted, resulting in a significant increase in total installed capacity. Along with this, the number of solar power plants that are damaged and disposed of due to various circumstances, including natural disasters, has also increased. However, among these, there are still solar panels that are capable of generating power. At Denken, we select the operational solar panels from those scheduled for disposal and conduct testing and inspection aimed at reuse while reducing environmental impact.
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basic information
Flow of Reuse Inspection for Used Solar Panels 1. Visual Inspection Check the appearance of the used solar panels visually. 2. Cleaning Remove dirt from the panel surface using a high-pressure washer. 3. Inspection For IV measurement and EL inspection, we use inspection equipment from Denken, which is also used by domestic and international solar panel manufacturers. - IV Measurement Illuminate the solar panel with simulated sunlight while measuring the current and voltage generated by the panel. Measurement Device: Solar Module Tester/DKSMT Series - EL Inspection Inspect for micro-cracks that cannot be detected visually. Measurement Device: EL Tester - Insulation Resistance Test Apply more than twice the standard voltage to the solar panel to test for insulation. 4. Ranking Based on the inspection results, classify into good products (e.g., A, B, C) and NG. 5. Packaging and Shipping Package according to rank and transport to the designated location.
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Company information
Since our founding in 1975, our company has embraced a bold spirit of challenge as part of our corporate culture. As business challenges have become more advanced and complex over time, we have actively pursued diversification to enhance our stability and competitiveness. Currently, we have six core businesses: FA equipment-related business, semiconductor-related business, energy-related business, bicycle parking business, health and medical equipment-related business, and precision sheet metal processing business. By expanding a wide range of products and services across various fields, we have gained significant trust not only domestically but also from overseas. Additionally, our group companies include "Shin Denryoku Oita Co., Ltd." which engages in power retailing, "OAD-TEC Co., Ltd." which handles analog device design and staffing services, "I.S.I Co., Ltd." which specializes in precision sheet metal processing, and "DK TRADING Co., Ltd." which functions as a trading company. We are advancing integrated group management to provide our customers with higher value-added proposals. The Denkeng Group will continue to refine our unique ideas and technologies, striving daily to contribute to the realization of a rich and sustainable society for our customers, the planet, and the future. President and CEO Genta Ishii