TNO spin-off that produces 100% silicon anodes for batteries with energy density up to 70% higher.
| Date | Round | Amount |
|---|---|---|
| Sep 2025 | Funding round LeydenJar raised a €13 million equity round led by Extantia and Invest-NL (€23 million total including €10 million in pre-orders) to scale silicon anode production at PlantOne. | $15.1M |
| Dec 2022 | Debt Leiden-based battery innovator LeydenJar Technologies secured a EUR30M EIB loan facility to build its first silicon anode production plant. | $32M |
| Sep 2021 | Series A Dutch silicon-anode battery startup LeydenJar raised a EUR 22M Series A from Catalus Capital, Invest-NL and others. | $26M |
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