SALZSTROM is an Austrian cleantech firm developing sodium-ion battery technology as a European alternative to lithium-ion energy storage. The company has brought CE-certified sodium-ion battery modules to market. It secured over $1 million in a pre-seed round backed by Erste Bank and other partners. SALZSTROM will consolidate its R&D activities into a new entity named FlexCo to accelerate core technological breakthroughs while keeping a commercial focus through SALZSTROM. The firm’s longer-term vision is to help Europe reduce dependency on lithium, cobalt, and nickel by leveraging abundant sodium for safer, high-thermal-resilience batteries. Management describes the funding as an essential milestone and a strong signal of investor support amid growing interest in next-generation battery chemistries.

Total raised

$1M

Funding rounds

1

Latest round

Seed

Latest activity

Apr 2025