Kyoto Fusioneering

Active#19 worldwide · Fusion & advanced nuclear

Fusion & advanced nuclear

Energy & climate›Fusion & advanced nuclear

HQJapan

Last roundSeries D (first close) · Aug 2026

Uback rankings

Ranking	Tier	Rank	Edition	Next update
Fusion & advanced nuclear · worldwide	Top 45	#19	Edition 0 (beta) · Oct 2026	2 Mar 2027

Rank historyOct 2026 · #19 Fusion & advanced nuclearFirst edition: no movements yet.

Estimated valuation

AI · Fusion & advanced nuclear ranking (worldwide)

≈ USD 540MUSD 430–680M · Hundreds of M$ High confidence

Hundreds of k$

Millions $

Tens of M$

Hundreds of M$

Unicorn

Decacorn

Hectocorn

Anchor: Last known equity round: Series D (first close) · JPY 16.7bn (about USD 105M) · Aug 2026

An indicative editorial estimate produced by AI, imperfect by nature: neither a financial valuation nor investment advice. Only the market sets a company’s value. Method

Funding history

Date	Round	Amount	Type	Investors	Source
Aug 2026	Series D (first close)	JPY 16.7bn (about USD 105M)	Equity	IMM Japan Korea-Japan Fusion Fund, DBJ, JR East	kyotofusioneering.com

Rounds as cited by Uback’s rankings and their sources. Equity, debt and grants are shown separately; only equity rounds count towards the valuation anchor.

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What the AI reads

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Read by the AI at the next edition.

Comparable companies in fusion & advanced nuclear

Full fusion & advanced nuclear ranking →

Marvel Fusion#18GermanyHundreds of M$Thea Energy#20United StatesHundreds of M$Tokamak Energy#17United KingdomHundreds of M$Xcimer Energy#21United StatesHundreds of M$

Investors in Kyoto Fusioneering: IMM Japan Korea-Japan Fusion Fund · DBJ · JR East

Sources. kyotofusioneering.com

Last updated: Oct 2026Report an error

Uback is a content publisher. It provides no investment advice, receives no mandate and takes part in no transaction. Rankings, ranges and brackets are editorial estimates produced by AI, purely indicative.