Dutch-based startup Carbyon has secured additional strategic funding from ISAI Build Venture, a fund co-founded by ISAI and Bouygues, to scale up its Direct Air Capture (DAC) technology.
This new investment extends Carbyon’s $17.9 million (€15.3 million) Series A round, originally closed in September 2024.
Carbyon was founded in 2019 by Hans De Neve as a spin-off from Dutch research institute TNO with the aim to make DAC scalable and cost-effective to help achieve global net-zero emissions.
Relevant: Carbyon To Scale DAC Technology With New $16.93M Funding
Its patented “fast swing” system captures carbon dioxide (CO2) up to 200 times faster than traditional filters, lowering energy, cost, and space requirements, and the captured carbon can be stored underground or used in sustainable products.
The new funding, announced last week but without disclosing the amount, will support Carbyon’s scale-up and continued technological development.
In 2022, Carbyon was selected as one of 12 companies for a CO2 capture pilot program in Canada and received a $1 million Milestone Award from the XPRIZE Carbon Removal competition.
The company has also entered a strategic partnership with Bouygues to accelerate deployment.
Bouygues brings expertise in process engineering, helping Carbyon scale its systems and potentially expand into green sectors like sustainable aviation fuel, e-methane, and e-methanol.
French President Emmanuel Macron visited Carbyon’s exhibit at VivaTech 2025, showing growing international interest in the company’s approach.
ISAI Build Venture, which co-invests from seed to Series C stages, targets startups transforming and decarbonizing sectors such as construction, energy, and infrastructure.
It operates under ISAI Gestion, a French investment firm and signatory of the United Nations’ Principles for Responsible Investment (UN PRI) supporting inclusive, low-carbon technologies.
Read more: Deep Sky & Carbyon To Pilot Direct Air Capture In Canada
