GPSS Group’s vision is to help transform into a sustainable society through grid parity, independent from imported resources by further utilizing sustainable energy.
GPSS Engineering’s role is to take that vision and build it.
From initial design, through procurement and construction, we concentrate on delivering safely and securely, sustainable and cost-effective energy projects.

renewable energy

Track record

With a track record of constructing 200MW of sustainable energy projects, GPSS Engineering offers services over Solar, Wind, Geothermal, Small Hydro and Biogas power generation.
For GPSS Engineering, EPC is not just a job, but part of a passion to deliver a sustainable future to the next generation and beyond.


  • Hokkaido 63 MW
  • Tohoku 36 MW
  • Kanto 41 MW
  • Chubu 4 MW
  • Kinki 7 MW
  • Chugoku 6 MW
  • Shikoku 10 MW
  • Kyushu 27 MW

Company information

  • Name:GPSS Engineering Inc.
  • Business: Sustainable energy EPC, O&M and technology development
  • CEO:Phillip Richards
  • Adress:Shibakoen ND Bldg. 6F, 2-5-10 Shiba, Minato-ku, Tokyo 105-0014, Japan
  • Email:
gpss engineering

Group Companies


フィリップ リチャーズ


Phillip Richards - CEO

Phillip graduated with an honours degree in economics for Melbourne University. During his studies he spent a year at Osaka University’s Graduate School of Economics on a Japanese Ministry of Education Scholarship. He attained the highest-level certificate in the Japanese Proficiency Test.
Starting his career as a money market trader at Daiichi Kangyo Bank, Phillip held various positions at top-tier investment banks in Japan and Asia, including Head of G10 Short Term Interest Rate Trading in Asia-Pacific region for Merrill Lynch and Head of Global Liquidity Management for Deutsche Bank, Tokyo.
After a 20-year career in finance and a strong desire to leave a better world for our kids and future generations, Phillip joined GPSS Group as Director of corporate strategy and later was appointed as CEO of GPSS Engineering.

喜田 健資


Kensuke Kita - Director

After graduation from Keio University’s faculty of Science and Engineering in 1989, Mr. Kensuke Kita joined Chemical Bank (presently JP Morgan Chase), where he was a market maker in the foreign exchange and rates derivatives group, specializing in arbitrage strategies. Following that he joined the interest rate swap trading desk at Merrill Lynch.
In 1998 Mr. Kita, took an apprenticeship in wooden ship building, culminating in the commissioning of his own yacht.
Mr. Kita is the founder of an internet gaming start-up.
Returning to his alma mater in 2008, Mr. Kita completed his Master’s in Construction Design under Kazuyo Sejima and Kuma Kengo. Mr. Kita joined GPSS Holding’s predecessor company as the head of design on 2014.
He is a 7 times competitor at the world sailing championships (International 14 class).

細田 耕三


Koso Hosoda - Executive Officer

Born in Hiroshima, Mr. Koso Hosoda graduated from the National Institute of Technology Tokyo College, majoring in Civil Engineering. He joined a general contractor where he was involved in water works, road improvements and repairs, slope stabilization and excavations. He was involved in the construction of Shiokaze Park in Odaiba.
After obtaining his national qualifications in 2000, Mr. Hosoda left to start his own civil engineering construction company based in Yokohama, where he acted as CEO. The firm was involved in public works and the preparatory civil works for large scale housing developments and under Mr. Hosoda leadership grew to a 300-million-yen a year business.
Mr. Hosoda joined the predecessor company of GPSS Holdings in 2014 as one of its founding members.

目﨑 雅昭 - 取締役

Masaaki Mezaki

Graduated from the Faculty of Commerce, Keio University. Master of Social Anthropology from the London School of Economics (LSE), University of London, and was an interest rate derivative trader for Merrill Lynch working in Tokyo, New York and London. After leaving Merrill Lynch, travelled to more than 100 countries around the world for nearly 10 years. In 2012, set up Japan Megasolar Inc. to achieve grid parity with photovoltaic power generation. Looking to the development of renewable energy business, changed the company name to GPSS Holdings Inc. in April 2017. Also conducts educational activities for dissemination of renewable energy information through various media.

Contact us

Shibakoen ND Bldg. 6F, 2-5-10 Shiba,
Minato-ku, Tokyo 105-0014, Japan

Phone: +81-3-6435-2391


We are seeking diverse canidates as we expand our business. Please inquire via the site below.

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