Finnish deep-tech startup Granarium Technologies has raised over €1M in a pre-seed round led by BSV Ventures, with participation from Beamline, FiBAN, EstBAN, and LatBAN, to commercialise the world’s first renewable supercapacitors made from nanocellulose and waste biomass.
The technology, developed at VTT, can lower supercapacitor production costs by up to 80% compared to traditional methods.
CEO Paula Viinamäki, a former Nokia and Microsoft director who joined VTT as commercialisation lead to bring the technology to market, is targeting first pilots within six months across process industries and continuously running production operations.
Paula Viinamäki built her career at top European tech companies like Nokia and Microsoft, where she led product management, user experience, and Nokia’s Forward Labs. She later co-founded the Finnish SaaS startup Duuers and worked as commercialisation lead at VTT, Finland’s national research institute.
Instead of staying in software, she decided to focus on renewables at Granarium Technologies. She joined two VTT scientists, Otto-Ville Kaukoniemi and Vesa Kunnari, who discovered that electricity storage could be made entirely from renewable materials, found in abundance in Finland’s forests.
