Carbonaide, a Finnish startup focused on turning building materials from a large emission source into a carbon sink, has raised €3.7 million in its latest funding round to scale its operations and accelerate key strategic initiatives.
The combined investment consisted of equity and supporting financial instruments. The round was led by Carbonaide’s existing owners, Vantaan Energia, Redstone, and Ihantola Invest, with participation from a group of private investment companies and investors, including Zero Carbon Future Group, Helkama Kiinteistöt, and Ikorni Invest.
“With this momentum, we are well-positioned to scale our technology, expand our CO₂ partner network, and continue turning concrete factories into carbon sinks. There is clear demand in the construction industry for solutions that reduce emissions, showing that the industry is turning towards a low-carbon built environment,” said Tapio Vehmas, CEO of Carbonaide.
Carbonaide is a spin-out company from VTT Technical Research Centre of Finland and was founded in 2022. It has developed a technology for mineralising CO2 and sinking it permanently into concrete, making carbon-negative concrete profitable.
The company offers three key solutions: Carbonaide CO₂ curing system offers complete CO₂ curing solutions for concrete producers, from design and setup to integration with new or existing facilities. Carbonaide Service Platform is a cloud-based software platform for managing CO₂ flow, carbon measurements and carbon credit issuance. And lastly, Carbonaide Care offers life cycle support for all Carbonaide systems, from setup to ongoing maintenance.
The startup plans to use the newly raised capital to expand customer acquisition by strengthening its global sales organisation and marketing activities. It also intends to further develop its Carbonaide Service Platform and accelerate research and development beyond precast concrete, beginning with next-generation carbon dioxide curing for concrete element production. According to the company, this is expected to enable future applications in ready-mix and other concrete types.
“With a lifetime focus on decarbonising construction, I am very excited by Carbonaide’s potential. Now that the technology is ready to scale, we are thrilled to support the growth of the company and also to partner with Carbonaide to supply carbon data for low-carbon products,” said Panu Pasanen, CEO of One Click LCA and investor through the Zero Carbon Future Group.
Today, another startup focused on decarbonising the construction industry announced the closing of its Seed financing round. Düsseldorf-based Co-reactive secured €6.5 million to scale its CO₂ mineralisation technology, which utilises CO₂ and binds it permanently in high-performance construction materials.
Carbonaide’s technology has been in commercial production since 2024. During 2025, Carbonaide entered into agreements with two Finnish companies, concrete producer Lakan Betoni and concrete element manufacturer Lipa-Betoni, for installing its technology in their factories. Production using the Carbonaide systems begins in both facilities in early 2026.
In January 2026, Carbonaide also sold the first certified carbon credits created through its mineralisation technology to a Finnish law firm.
Read the orginal article: https://www.eu-startups.com/2026/01/finlands-carbonaide-raises-e3-7-million-to-turn-building-materials-into-a-carbon-sink/
