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DORYOKU Co., Ltd.

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Japanese company specializing in solar power generation systems and zero-energy house equipment, from sales to installation.

Last updated September 28, 2026

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Overview

DORYOKU Co., Ltd. (株式会社動力) is a Japanese company headquartered in Anjo, Aichi Prefecture, specializing in the sale, installation, and construction of solar power generation systems and other equipment for zero-energy houses (ZEH). The company was originally founded in December 2008 in Gamagori, Aichi, under the name Suzuki Taiyo Gijutsu Co., Ltd. (株式会社スズキ太陽技術), with the purpose of selling and installing environmental products. It was renamed DORYOKU Co., Ltd. in April 2016 after merging with its subsidiaries TAK Green Service and Daika Denko. DORYOKU's core business revolves around renewable energy and energy-efficient housing. The company provides total construction services for zero-energy houses, including solar power systems, storage batteries, energy-efficient air conditioners and water heaters, and home security systems. It also develops and manufactures mounting systems for solar panels, such as the SmartRack® series, and offers industrial solar rack systems. Beyond solar, DORYOKU is involved in recycling technology, including waste plastic processing plants and oil regeneration equipment, as well as air purification products like the Virus Eliminator. The company operates through a network of sales offices across Japan, including locations in Aichi, Miyagi, Tokyo, Osaka, Hiroshima, Ehime, and Fukuoka. As of March 2023, it had 40 employees and a capital of 20 million yen. DORYOKU has been listed on the Tokyo Stock Exchange's TOKYO PRO Market since August 2015. The company emphasizes sustainability and has obtained ISO 9001 and ISO 14001 certifications, as well as SBT (Science Based Targets) certification and an ESG rating from CRIF. DORYOKU's mission is to circulate infinite energy from natural resources and waste, promoting a sustainable energy society. Its business activities include construction, electrical work, plumbing, sale and installation of energy equipment, manufacturing of environmental products, and real estate management. The company continues to expand its product lineup and market presence, recently opening new sales offices and participating in exhibitions like SMART ENERGY WEEK.

History

DORYOKU Co., Ltd. was established in December 2008 in Gamagori, Aichi Prefecture, as Suzuki Taiyo Gijutsu Co., Ltd. (株式会社スズキ太陽技術), with the purpose of selling and installing environmental products. In October 2009, the company registered as an electrical contractor. In January 2010, it moved its headquarters to Oodocho, Anjo, Aichi. In February 2011, it co-developed with Takashima Co., Ltd. the domestic residential mounting anchors 'Kawara Anchor' and 'D Anchor', as well as the residential solar rack system 'SmartRack®'. In February 2013, it co-developed the 'Power Base®' roof mounting and the industrial ground-mount rack system 'SD Frame' with Daiwa Co., Ltd. In October 2013, it opened the Human Resource Development Center in Mikawa Anjo Higashimachi, Anjo, Aichi. In November 2013, it obtained ISO 9001 certification. In January 2014, it moved its headquarters to Mikawa Anjo Higashimachi. In February 2014, it obtained the Minister of Land, Infrastructure, Transport and Tourism license for electrical work. In May 2014, it developed the 'OS Anchor' for large slate roofs. In October 2014, it developed the 'SMAC' direct mounting for folded-plate roofs. In November 2014, it developed the 'SR10' 10-degree rack for folded-plate roofs and obtained ISO 14001 certification. In January 2015, it developed the 'SR ZERO' 0-degree rack for folded-plate roofs. In February 2015, it opened the Nagoya Sales Office in Kitanagoya, Aichi. In April 2015, it developed the industrial mounting 'D Catch'. In August 2015, it listed on the Tokyo Stock Exchange TOKYO PRO Market. In November 2015, it co-developed the residential solar rack system 'SmartRack® Gyrolock' with Takashima Co., Ltd. In December 2015, it acquired shares of TAK Green Service Co., Ltd., making it a subsidiary. In February 2016, it acquired shares of Daika Denko Co., Ltd., making it a subsidiary, and obtained the plumbing work license. In March 2016, it developed the 'Mitsubishi Distribution Procurement Compliant Rack'. In April 2016, it merged with TAK Green Service and Daika Denko and changed its trade name to DORYOKU Co., Ltd. In September 2016, 'SmartRack® Gyrolock' won the 2016 Good Design Award. In November 2016, it relocated the Kyushu Sales Office to Hakata-ku, Fukuoka, and developed the industrial ground-mount rack system 'D Earth'. In January 2017, it obtained the antique dealer license. In July 2017, it began handling roof renovation material 'Sea Guard'. In February 2018, it began handling smart home security 'Secual' and relocated the Tokyo Sales Office to Sumida-ku, Tokyo. In March 2018, it registered as a rental housing management business. In April 2018, it developed the agricultural solar power system rack 'D Earth Farm' and the stacked folded-plate rack 'bMAX'. In September 2018, it began periodic maintenance services for solar power generation. The company has continued to expand, opening new sales offices and obtaining certifications such as SBT and ESG ratings.

  • Established as Suzuki Taiyo Gijutsu Co., Ltd. in Gamagori, Aichi.

  • Registered as an electrical contractor.

  • Moved headquarters to Oodocho, Anjo, Aichi.

  • Co-developed 'Kawara Anchor', 'D Anchor', and 'SmartRack®' with Takashima Co., Ltd.

  • Co-developed 'Power Base®' and 'SD Frame' with Takashima and Daiwa.

  • Opened Human Resource Development Center in Anjo, Aichi.

  • Obtained ISO 9001 certification.

  • Moved headquarters to Mikawa Anjo Higashimachi, Anjo, Aichi.

  • Obtained Minister of Land, Infrastructure, Transport and Tourism license for electrical work.

  • Developed 'OS Anchor' for large slate roofs.

Products and positioning

Provider of total solutions for zero-energy houses and renewable energy systems, from sales to installation.

  • SmartRack®

    Residential solar rack system co-developed with Takashima Co., Ltd.

  • SmartRack® Gyrolock

    Residential solar rack system that won the 2016 Good Design Award.

  • Power Base®

    Roof mounting for tiles, co-developed with Takashima Co., Ltd.

  • SMAC

    Direct mounting for folded-plate roofs.

  • Virus Eliminator Pro

    Air purification product.

Sources6 sources

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