Finland Deeptech Startup Reduciner Secures €3.6 Million Funding To Convert Emissions Into Value

The funding round includes equity investment from Voima Ventures, Lifeline Ventures, and the Mikko Kodisoja Foundation, alongside an in-kind contribution of technology and intellectual property from VTT Technical Research Centre of Finland.

Reduciner is developing 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 integrated into existing industrial systems, helping companies reduce emissions without major changes to current infrastructure.

“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,”

says Johanna Grönroos, co-founder and CEO of Reduciner. “What makes Reduciner stand out from other deep tech companies aiming to develop sustainable fuel alternatives is that with our process, the sustainability impacts are reached profitably from the very beginning while also unlocking significant market potential.”

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The technology produces synthesis gas rich in carbon monoxide (CO), which can be used across a wide range of industrial processes and as a feedstock for synthetic hydrocarbons such as methanol.

Compared to conventional CO₂-based production routes, the use of carbon monoxide improves process efficiency and cost-effectiveness while reducing reliance on expensive inputs like hydrogen, leading to stronger overall profitability.

The solution is especially suited for hard-to-abate heavy industries including lime, cement, steel and pulp. In the lime sector, for instance, carbon dioxide emissions generated during production can be captured from the kiln, converted using Reduciner’s technology and reused as fuel in the same process, effectively closing the carbon loop. Given the scale of global lime usage, this represents significant emissions reduction potential.

Developed from several years of research at VTT Technical Research Centre of Finland, the technology has been validated through pilot-scale testing.

Commercialisation began in 2026, starting with small-scale demonstration projects and progressing toward first industrial deployments in Finland, with international expansion planned before 2030.

VTT plays a key role in driving innovation-led industrial renewal and resilience, with startup creation as a core mechanism. Reduciner stands as a strong example of this approach.