Enphase Energy, Inc., a global leader in energy technology and the top provider of microinverter-based solar and battery solutions, has announced the commencement of IQ8™ Microinverter shipments to Japan. This milestone follows a distribution agreement with ITOCHU Corporation, one of Japan’s largest trading companies.
As of April 1, 2025, Tokyo has become the first city in Japan to mandate rooftop solar installations on all new homes built by major homebuilders. Given that residential rooftops in Tokyo are typically compact, designing efficient solar systems can be complex. Enphase’s IQ8 Microinverters address this challenge by offering flexible, scalable solutions that boost solar energy output and reliability. The company’s microinverters also feature an AC-based architecture, providing enhanced safety and protection for Japanese consumers.
Shunsuke Kawashima, General Manager of ITOCHU’s Sustainable Energy Business Department, stated that ITOCHU is proud to offer Enphase’s advanced IQ8 Microinverters in Japan. He emphasized that the partnership supports Tokyo’s new rooftop solar mandate by providing a safe, reliable solution for homes with limited roof space. Kawashima also highlighted that homeowners installing Enphase products can benefit from the Tokyo metropolitan government’s 20 yen-per-watt subsidy.
Enphase is set to introduce its IQ8HC™ Microinverters in Japan as the initial offering, capable of handling a continuous DC current of 14 amperes and delivering a peak output power of 350 VA. All IQ8 Microinverters deployed in Japan will include a 25-year warranty.
Ken Fong, Senior Vice President and General Manager of the Americas and APAC at Enphase Energy, expressed enthusiasm about entering the Japanese market in partnership with ITOCHU. He noted that Japan’s strong residential solar sector values quality, and Enphase microinverters offer high energy output, safety, and reliability—ideal for compact, partially shaded rooftops. Fong added that the company looks forward to driving sustainable energy adoption across Japan through this collaboration.
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