Sinanen Co., Ltd.
Sinanen Co., Ltd. is a Japanese energy and lifestyle services company, part of the Sinanen Holdings Group, formed from the 2026 integration of Sinanen and Miraif.
Last updated September 15, 2026
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Overview
Sinanen Co., Ltd. is a Japanese company in Tokyo that provides energy and lifestyle services. It is part of the Sinanen Holdings Group, which moved to a holding company structure on October 1, 2015, at which time the company changed its trade name to Sinanen Co., Ltd. In April 2026, Sinanen integrated with Miraif Co., Ltd., Miraif West Japan Co., Ltd., and Miraif East Japan Co., Ltd. to form the 'new Sinanen.' The company offers services to both individual and corporate customers, including electricity and gas, and has expanded into water and home-assurance services.
History
On October 1, 2015, the Sinanen Holdings Group transitioned to a holding company structure, and the company changed its trade name to Sinanen Co., Ltd. In January 2016, it acquired all shares of Nihon Solar Power Co., Ltd., and in July 2016 the Taishin Village Solar Park was completed. In December 2016, it ended its solid fuel business. In June 2017, it partially succeeded the business of Sinanen Facilities Co., Ltd. In April 2018, it established a PV Service Division for solar power system peripheral businesses, and in June 2018 partially succeeded the business of Solar Support Center Co., Ltd. In January 2019, it relocated its head office to 3-5-27 Mita, Minato-ku, and in March 2019 established SINANEN KOREA CO., LTD. In February 2020, it established Sinagy Revo Co., Ltd., and in December 2020 established Synergy Transport. In April 2023, it absorbed Sinagy Revo. In July 2024, it relocated its head office to 1-39-20 Higashi-Shinagawa, Shinagawa-ku. In April 2026, it integrated with Miraif West Japan Co., Ltd., Miraif Co., Ltd., and Miraif East Japan Co., Ltd.
Products and positioning
A regional lifestyle partner providing energy and home services through a one-stop window.
Sinanen Denki
Electricity service offered by Sinanen.
Sinanen Water
Water service launched in August 2026.
Sinanen Anshin Plus Series
Home assurance service series launched in August 2026.
Sources5 sources
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