Espoo-based deeptech startup Reduciner has raised €3.6 million in a funding round to commercialise its carbon conversion technology. The round includes equity investment from Voima Ventures, Lifeline Ventures, and the Mikko Kodisoja Foundation. In addition, VTT Technical Research Centre of Finland has contributed the underlying technology and intellectual property as an in-kind investment.
Reduciner is commercialising a high-temperature thermochemical process that converts captured carbon dioxide into carbon monoxide using renewable electricity and biogenic carbon. The resulting carbon monoxide can be used directly in existing industrial systems, enabling companies to reduce emissions without requiring major infrastructure changes.
Most technologies that seek to replace fossil fuels with more sustainable ones require rebuilding of infrastructure. Reduciner’s technology converts CO₂ into CO, which is compatible with existing machinery, allowing the solution to be deployed faster and more cost-efficiently,
said Johanna Grönroos, co-founder and CEO of Reduciner. She added that the company differentiates itself from other deeptech firms developing sustainable fuel solutions by achieving environmental benefits while remaining economically viable from the outset.
The company’s process also produces activated carbon as a co-product, contributing to overall economic viability. This material is widely used in water and gas purification and is expected to see increased demand due to tightening environmental regulations.
The technology is particularly suited for emissions-intensive sectors such as lime, cement, steel, and pulp, where it can enable circular use of carbon by converting captured emissions into fuel for reuse within the same process.
Eemeli Tsupari, co-founder and CTO of Reduciner, noted that global emissions from the lime and cement industries exceed those from the aviation and maritime sectors combined.
With this technology, it is possible to replace fossil fuels site by site, depending on the availability of green electricity, while also improving cost competitiveness.
The funding will support further development and commercialisation of the technology, including pilot and demonstration projects. Initial industrial deployments are planned in Finland, with broader international expansion targeted in the coming years.
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