TeraWatt Technology Inc
Shizuoka, JP · 38 employees on LinkedIn · 6 known investors
TeraWatt Technology develops and mass-produces next-generation lithium-ion batteries designed to be lighter, smaller, more powerful, and safer, operating manufacturing facilities in Japan. The company targets electrification and decarbonization markets, working with energy companies and EV-related partners.
Also known as TeraWatt · TeraWatt Technology
Investors · 6
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Funding
SEC filings, press & company announcements- Undisclosed amountSeries CApr 2026Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026TeraWatt Technology Inc is a battery company focused on manufacturing lighter, smaller, higher-power and safer lithium-ion batteries at scale, under the stated aim of electrification for a sustainable future. The company completed its first mass-production facility and began initial operation in October 2024, and the Shizuoka facility achieved ISO 9001 certification in May 2025.
The organization spans cell engineering, process/equipment/manufacturing, product management, business development, IT and corporate functions, as reflected in its open roles, which include cell R&D, cell evaluation and analysis, cell QC/QA, production technology and mass-production process design engineering, as well as battery offtake-contract business development. Company materials also reference "TeraSpace," described in connection with combining AI and robotic craftsmanship to support next-generation battery development.
Business model
The company manufactures next-generation lithium-ion battery cells at its own production facilities and pursues battery offtake contracts and customer business development, alongside strategic partnerships with energy companies to deploy its batteries.
Traction
First mass-production facility completed with initial operation from October 2024 and ISO 9001 certification in May 2025; selected for Forbes Asia 100 to Watch 2024; Series C funding closed in stages between July 2025 and April 2026, accompanied by strategic partnerships with energy companies.
Latest developments
In April 2026 the company announced the final close of its Series C round together with strategic partnerships with energy companies to accelerate deployment of its next-generation batteries. Senior appointments followed, including Saeed Khan as Head of Information Systems (April 2026) and Dr. Sunho Kang as Head of Product and Technology (June 2026).
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Positioned as a scale-oriented manufacturer of next-generation lithium-ion batteries with Japan-based production and a U.S. presence; recognized in Forbes Asia 100 to Watch 2024.
Technology
Next-generation lithium-ion battery cells positioned as lighter, smaller, more powerful and safer than conventional cells, manufactured at scale. Company materials reference "TeraSpace," associated with a combination of AI and robotic manufacturing craftsmanship supporting battery development.
Go-to-market
Direct business development with customers and energy-company partners, including battery offtake contract negotiation, supported by a dedicated international business development function established in March 2026 to pursue global expansion.
Energy companies and customers requiring next-generation lithium-ion cells, with business development roles focused on battery offtake agreements.
Geography
Operations span Japan and the United States: the first mass-production facility is in Shizuoka, Japan, and the website lists a San Francisco, California address. Company materials describe an international structure making use of both Japan and U.S. bases.
History
Company materials indicate the battery technology division of SERES was transitioned into an independent company in January 2020, with website copyright notices dating to 2019. TeraWatt Technology closed a Series B round in June 2022 and a Pre-C round in June 2023 to accelerate large-scale pilot production of its next-generation lithium-ion batteries. It completed its first mass-production facility and began initial operation in October 2024, obtained ISO 9001 certification for that Shizuoka facility in May 2025, closed the first tranche of a Series C round in July 2025, and announced the final close of Series C in April 2026. Over 2024-2026 the company added a series of senior hires and advisors drawn from battery and automotive manufacturers.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Timeline · 19
launches, deals, and filingsDated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 1
primary sources listed
- TeraWatt Technology Incterawatt-technology.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does TeraWatt Technology Inc do?
- TeraWatt Technology develops and mass-produces next-generation lithium-ion battery cells in Japan.
- Who are TeraWatt Technology Inc's investors?
- TeraWatt Technology Inc's investors include Coral Capital, DRONE FUND, JIC Venture Growth Investments, Aozora Corporate Investment, JERA, Temasek.
- Where is TeraWatt Technology Inc headquartered?
- TeraWatt Technology Inc is headquartered in Shizuoka, JP.