H2SITE

Active#31 in Spain

Hydrogen membrane reactors

Climate›hydrogen membrane reactors

Founded2021

HQBilbao

RaisedEUR 36M+

Last roundSeries B · Jan 2025

Country of originSpainListed in the Spain ranking

Where would you invest?SpainJurisdiction as cited by the ranking

Uback rankings

How the AI ranks →

Ranking	Tier	Rank	Edition	Next update
Spain · all sectors	Top 50	#31	Edition 0 – beta · October 2026	3 Nov 2026

Rank historyOct 2026 · #31First edition: no movements yet.

Estimated valuation

AI · Spain ranking

≈ USD 210MUSD 170–260M · Hundreds of M$ High confidence

Hundreds of k$

Millions $

Tens of M$

Hundreds of M$

Unicorn

Decacorn

Hectocorn

Anchor: Last known equity round: Series B · USD 40M · Jan 2025
AI adjustment: None

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

EUR 36M+ raised in total

Date	Round	Amount	Type	Investors
Jan 2025	Series B	USD 40M (EUR 36M)	Equity	Suma Capital, Hy24, Breakthrough Energy Ventures, Equinor

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

Independent analyses

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ValuationWhat is H2SITE worth?

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What the AI reads

Read by the AI at the next edition.

Comparable companies in Spain

Full Spain ranking →

bound4blue#28Climate › wind propulsion for shipsHundreds of M$Heura#30Foodtech › plant-based meatHundreds of M$Bit2Me#32Crypto › exchangeHundreds of M$Sateliot#29Space › 5G satellite IoTHundreds of M$

Investors in H2SITE: Suma Capital · Hy24 · Breakthrough Energy Ventures · Equinor

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.