OUR PEOPLE
Osaka Gas USA is composed of five business areas and has three locations in the U.S.
Our business areas are Upstream, Power (gas-fired/renewables), LNG, and Future Energy Development / Innovation, with our offices located in Houston, New York, and Silicon Valley.
We’re a growing organization in the U.S. energy business sector bringing highly professional talent with varying technical experience and culturally diverse backgrounds.
OSAKA GAS USA
OUR TEAM
Takeshi Matsui
Chairman
Takeshi Matsui joined Daigas Group in 1983. Mr. Matsui previously served as Executive Vice President of Osaka Gas Co., Ltd
Hiroshi Emi
Chief Technical Officer
Hiroshi Emi is the Chief Technical Officer of Osaka Gas USA.
Tamotsu Manabe
Chief Compliance Officer
Tamotsu Manabe is the Chief Compliance Officer of Osaka Gas USA. He is responsible for conducting compliance activities.
Hiroshi Emi
Chief Technical Officer
Hiroshi Emi is the Chief Technical Officer of Osaka Gas USA. He is responsible for the supervision of engineering in all aspects of OGUSA’s businesses.
He joined Daigas Group in 1992, where Hiroshi’s expertise in project management grew based on his background as a Process Engineer.
During his first seven years, he worked at an engineering company where he participated primarily in the EPC of methanation facilities. He next moved to a role where he optimized the cryogenic energy utilization system in the company’s LNG receiving terminals. Since 2010, he has been involved in LNG liquefaction projects overseas, including an assignment at Chevron Australia, Gorgon LNG Project. In 2013, he participated in the Freeport LNG Project EPC in the U.S.
Sunao Okamoto
President & CEO
Sunao Okamoto is the President & CEO of Osaka Gas USA. He is responsible for managing Osaka Gas’ business in North America.
He joined Daigas Group in 1994 and has more than 20 years of experience in global LNG and upstream business including LNG origination/trading and the development of Freeport LNG and the US shale gas, prior to the assignment of CEO for Osaka Gas USA.
Tamotsu Manabe
Chief Compliance Officer
Tamotsu Manabe is the Chief Compliance Officer of Osaka Gas USA. He is responsible for conducting compliance activities.
He joined Daigas Group in 1999 and has more than 7 years of work experience in Energy Resources and International Business Unit (ERIBU) in Daigas Group HQ. In this role, he has been involved in LNG trading strategy planning, a business development study in India and establishment of overseas business risk management system.
Yasuo Kato
Chief Safety Officer
Yasuo Kato is the Chief Safety Officer of Osaka Gas USA. He is responsible for the supervision of safety in all aspects of OGUSA’s business.
He commenced his carrier in JGC Corporation, and then joined Daigas Group in 2008. He has a project management background with over 30 years in the overseas energy business in diverse places such as the Middle East, Southeast Asia, and Australia. His expertise is to conduct feasibility studies, planning, EPC, HSE, scheduling & cost control in energy and infrastructure projects.
Kazuaki Shirotsu
Chief Legal Officer /Chief Compliance Officer
Kazuaki Shirotsu is the Chief Legal Officer and Chief Compliance Officer of Osaka Gas USA. He is responsible for providing legal support and conducting compliance activities. He joined Daigas Group in 2008 and has engaged in M&A, Project Finance in the energy and infrastructure field. Prior to Osaka Gas, he joined Japan Bank for International Cooperation in 1994 and was involved in financing energy and infrastructure projects.
Takeshi Matsui
Takeshi Matsui joined Daigas Group in 1983. Mr. Matsui previously served as Executive Vice President of Osaka Gas Co., Ltd. from April 2019 to March 2024 and has been a board member of Osaka Gas Co., Ltd. since June 2017. He also has served as President of Corporate Planning, Headquarters, and was responsible for overseeing the company’s international businesses, including the gas network businesses and IT-related subsidiary. In other executive positions within Daigas Group, he served as Senior Executive Officer and the Head of the Energy Resources & International Business Unit from April 2016 through March 2019. Additionally, he serves as an Advisor for Osaka Gas’s international businesses.