Eindhoven to get factory for millions of battery components
LeydenJar raises €23 million to complete its Eindhoven factory PlantOne, which will start producing silicon anodes in 2027.
Published on September 10, 2025
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The Eindhoven-based company has raised €13 million to build a factory that will produce a crucial battery component. In a few years, 150,000 square meters of silicon anodes will roll off the production line each year, enough for 5 million smartphones or all earbuds worldwide. This new technology increases battery capacity by 50% and reduces charging time to under 12 minutes, with 85% fewer CO2 emissions compared to conventional batteries.
At the same time, the company raised €10 million in customer financing from a leading US consumer electronics company for the development and installation of critical production machinery. This combined support underscores the strong market validation of LeydenJar's technology and the path to commercial scale-up.
A tipping point
“This funding marks a tipping point for LeydenJar,” said Christian Rood, CEO and co-founder of LeydenJar, in a press release. "We are now making the leap from groundbreaking lab innovation to large-scale production. Our technology has already been incorporated into the roadmaps of some of the world's most ambitious product developers, and with PlantOne, we are ready to deliver at scale."
LeydenJar is a Dutch deep-tech company developing the world's first commercially viable, 100% pure silicon anode for lithium-ion batteries. LeydenJar was founded in 2016 as a spin-off from TNO and is headquartered in Leiden with operations in Eindhoven. Leyden Labs borrows €20 million from EIB for pandemic preparednessLeyden Labs from Leiden, has raised €20 million from the European Investment Bank to further develop its nasal spray.
Smaller, lighter, and more powerful batteries
LeydenJar's silicon anode technology has attracted significant interest from Original Equipment Manufacturers (OEMs) and cell manufacturers worldwide, as it increases battery capacity by 50%, overcoming the size and weight limitations of conventional batteries. By working with cell partners to enable smaller, lighter, and more powerful batteries, LeydenJar is opening the door to entirely new products, such as AI-driven wearables, electric vehicles with greater range, and even electric aviation.
PlantOne will have its own PECVD machines, specially developed to produce silicon anode rolls at scale. Once the factory is fully operational, it is expected to produce 125,000 m² of Silyte, LeydenJar's 100% silicon anode, annually. That is enough to power 5 million smartphone batteries or the entire global demand for earbuds. At the same time, the company will invest in expanding its commercial organization and scaling up its operational infrastructure to support growing customer demand and prepare for full industrial deployment.