Finnish Study: 40,000 m3 Hydrogen Cavern in Bedrock Costs EUR 30M
Espoo – October 19, 2026 -- A 40,000 cubic metre underground hydrogen storage facility in Finnish crystalline bedrock would cost approximately EUR 30 million and take four to five years to deliver, including planning and permitting, according to a study by VTT Technical Research Centre of Finland and the Geological Survey of Finland GTK.
The Business Finland-funded HUG project is the first comprehensive assessment of hydrogen storage requirements under Finnish conditions. Nearly twenty companies active in Finland's hydrogen economy took part.