Granarium Technologies Raises €1 Million To Commercialize Renewable Supercapacitors For Grid Stability And Industrial Applications
Publish Date: 2026-06-11 20:53:00
Source Domain: pulse2.com
Granarium Technologies, a deep-tech energy storage company spun out of VTT Technical Research Centre of Finland, announced that it has raised more than €1 million in total funding to accelerate the commercialization of its renewable supercapacitor technology.
The pre-seed round was led by BSV Ventures, with participation from Beamline, the Finnish Business Angels Network (FiBAN), EstBAN, and LatBAN. VTT has transferred the underlying technology and intellectual property to the newly formed company.
Granarium is developing what it describes as the world’s first renewable and affordable supercapacitors, utilizing nanocellulose-based materials derived from waste wood and agricultural residues. The technology upcycles renewable biomass into energy storage systems designed to provide fast-response power storage with lower production costs and reduced environmental impact compared with conventional lithium-based alternatives.
The company plans to use the new capital to industrialize its patented technology for grid stabilization and industrial reliability applications. Growing electrification, increasing integration of renewable energy sources, and stricter grid resilience requirements are creating rising demand for short-duration energy storage solutions that can support power quality and frequency regulation.
Granarium’s platform combines biocarbon structures with nanocellulose materials to create scalable energy storage devices that the company says can reduce production capital expenditures by as much as 80%. The systems are designed to be manufactured locally using readily available raw materials, reducing reliance on critical minerals and complex supply chains.
The startup believes its technology aligns with Europe’s broader strategic efforts to strengthen energy independence and develop resilient infrastructure. According to the company, the devices complement batteries by providing rapid-response capabilities for grid balancing,…
