Inertia Enterprises

Active#8 worldwide · Fusion & advanced nuclear

Fusion & advanced nuclear

Energy & climate›Fusion & advanced nuclear

HQUnited States

Last roundSeries A · Feb 2026

Uback rankings

Ranking	Tier	Rank	Edition	Next update
Fusion & advanced nuclear · worldwide	Top 45	#8	Edition 0 (beta) · Oct 2026	2 Mar 2027

Rank historyOct 2026 · #8 Fusion & advanced nuclearFirst edition: no movements yet.

Estimated valuation

AI · Fusion & advanced nuclear ranking (worldwide)

≈ USD 2.3bnUSD 1.9–2.9bn · Unicorn High confidence

Hundreds of k$

Millions $

Tens of M$

Hundreds of M$

Unicorn

Decacorn

Hectocorn

Anchor: Last known equity round: Series A · USD 450M · Feb 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
Feb 2026	Series A	USD 450M	Equity	Bessemer, GV, Threshold	techcrunch.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

Press & investor announcements1 source

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Comparable companies in fusion & advanced nuclear

Full fusion & advanced nuclear ranking →

Proxima Fusion#7GermanyUnicorn Antares#9United StatesUnicorn TAE Technologies#6United StatesUnicorn Radiant Industries#10United StatesUnicorn

Investors in Inertia Enterprises: Bessemer Venture Partners · GV · Threshold

Sources. techcrunch.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.