Mitsubishi Electric’s Net Zero Energy Test Facility Cuts Annual Operating Energy to Below 0%

New ZEB operational technology reduces standard primary energy consumption by 115% in first year

Mitsubishi Electric Corporation (TOKYO: 6503) announced today that its SUSTIE^® net zero-energy building (ZEB) test facility, which launched at the company’s Information Technology R&D Center (Kamakura, Kanagawa Prefecture) in 2020, reduced its energy consumption to less than 0%, meaning that it created more energy than it consumed, in its first full year of operation. The facility, a medium-sized office building with more than 6,000m² of floor space and equipped with solar panels, deployed ZEB operating technology to optimize operations, resulting in a 115% reduction in energy use compared to standard primary energy consumption as specified in Japan’s Building Energy Conservation Law (values differ according to region and building use). The results demonstrate that ZEB-level operation is possible even in dense urban areas while maintaining a highly comfortable and productive work environment.

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