About Us
We are a company founded by researchers who have been conducting research and development on high-temperature heat transport systems, including nuclear reactors, for over 20 years. Our theme is "decarbonization of heat," and we are developing next-generation thermal energy systems. Approximately 80% of the world's energy consumption still depends on fossil fuels. In Japan, where manufacturing accounts for a high percentage of GDP, decarbonizing thermal energy is particularly important. Blossom Energy's mission is to "green steam worldwide and reduce greenhouse gas emissions by 10%," and we are engaged in the research, development, manufacturing, and sales of next-generation energy technologies, including thermal storage batteries.
Read more about Hamamoto's vision → Read the representative's message
Management

Founder cum
Representative Director & CEO
Shinpei Hamamoto
He holds a PhD in Engineering. He spent 20 years engaged in research and development, operation, and maintenance at the High Temperature Engineering Test Reactor (HTTR) of the Japan Atomic Energy Agency (JAEA). After the Fukushima Daiichi nuclear accident, he spent two years at the Nuclear Regulation Authority supporting the startup of regulatory administration. Returning to the JAEA, he was in charge of obtaining licenses and restarting high-temperature gas reactors, as well as international joint test projects. In April 2022, he founded Blossom Energy Co., Ltd.

CTO
Chief Technology Officer
Takayuki
Torikai
I joined Toshiba as a new graduate and spent over 30 years working in power plant design and basic planning, project management, and overseas business. In Europe, I received orders for power generation equipment from French and Italian power companies, and in India, I led the establishment of a joint venture with a local company and the construction of a factory, gaining extensive experience in overseas business development and management.
At Toshiba Energy Systems, he is responsible for company-wide technology strategy, R&D investment, and intellectual property strategy. At Kitashiba Electric, he serves as a full-time auditor. He is well-versed in both technology and management, and is a Fellow of the Japan Society of Mechanical Engineers and a graduate of the MIT Sloan School of Management's MOT program.
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CRO
Chief Revenue Officer
Yosuke
Yoshida
After graduating from university, I joined Marubeni Corporation and spent 15 years working in overseas power projects. I gained experience in multiple EPC/IPP projects in Southeast Asia (Indonesia, Vietnam, and the Philippines). After leaving Marubeni, I held CEO/CxO positions at several startups, and co-founded and became the representative of a venture capital firm in a joint venture with the Kepple Group. I am currently enrolled in the Master's program at Oxford Business School, where I oversee customer acquisition, business partnerships, and revenue base development.
Advisor

advisor
Toshiyuki Abe
He spent approximately 38 years at Itochu Corporation, where he was involved in business development in the power, energy, and social infrastructure sectors, and served as an associate executive officer.
Subsequently, he served as Vice President, President, and Chairman at JAMCO Corporation, where he promoted the strengthening of the management foundation and global management. He graduated from the Department of Electrical and Electronic Engineering, Faculty of Science and Technology, Sophia University.

Strategic advisor
Satoshi Maeda
After joining Marubeni Corporation, he engaged in sales and investment activities for energy and chemical-related products, leading business expansion both domestically and internationally. Following the company's acquisition of a US subsidiary, he was assigned to the US in 2013, where he spearheaded the development and implementation of post-merger integration (PMI) business strategies. After transferring to the US subsidiary, he led new business development as Vice President, focusing on building supply chains in the decarbonization and sustainability fields. After 13 years of business management and practical experience in the US, he became independent in 2026. He is currently slated to become a co-founder and COO of a biotech startup and serves as a strategic advisor to several companies in the deep tech sector.
He holds an Executive MBA from the MIT Sloan School of Management and a Bachelor of Law from Kyoto University.
Company Profile
Name:
Blossom Energy Inc.
Foundation date:
January 2022
Address:
7-6-1 Asakusa, Taito-ku, Tokyo 111-0032
Representative:
Shimpei Hamamoto
Bank:
Shibuya-ekimae Branch, SUMITOMO MITSUI BANKING CORPORATION
Our business
Design, manufacturing, and sales of equipment of power plants
