TheStorage develops a sand-based thermal energy storage system that stores and releases heat to help industrial operators electrify heat processes and integrate renewable electricity. Its technology aims to reduce energy costs and emissions compared with fossil-based heat systems while enabling participation in electricity market and grid balancing opportunities. The company emphasizes high-efficiency heat transfer and integration with existing industrial processes. TheStorage recently raised €3.6 million in a seed round to accelerate commercialisation, expand its team, and continue technology development. Leadership includes CEO and co-founder Timo Siukkola, who has cited strong industrial interest in thermal energy storage. The company plans to scale its solution globally as industries seek to decarbonise heat and improve energy flexibility.

Total raised

$5M

Funding rounds

2

Latest round

Seed

Latest activity

Apr 2026