Rock Tech is planning the construction and operation of a lithium conversion facility (converter) in Guben, a German-Polish border town in Brandenburg. The facility will process lithium-bearing ore and recovered lithium from recycled batteries into battery-grade lithium hydroxide making it the first of its kind project in Germany and Europe. Construction and operation of the facility are already fully permitted.

As we will play a key role in the supply of critical raw materials, our planned facility in Germany has been recognized as a strategic project by the EU under the Critical Raw Materials Act – as one of only two lithium projects in Germany.

Rock Tech plans to produce 24,000 tonnes per year of high-purity lithium hydroxide in Guben; enough to power 500,000 electric vehicles. By 2030, this output positions us to supply 15 % of Europe’s cathode-active material demand, strengthening the ability to build batteries in the EU. It’s a direct contribution to a regional, resilient, and future-ready lithium battery supply chain.

Sustainability starts at the source. We are committed to ensuring full traceability across our supply chains, thereby meeting all requirements of the European Battery Passport. Using state-of-the-art technology, our lithium hydroxide will generate 30 to 64 % less CO₂ than the current industry average. Up to 95 % of the residual materials from the converter will be made available for further use.

Mercedes-Benz is a committed offtake partner, securing 10,000 tonnes per year of lithium hydroxide from the Guben Converter.