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Neptune Energy will transition from natural gas extraction to lithium production in Altmark, Germany, as announced on September 24, 2025. The region contains 43 million tonnes of lithium carbonate, positioning it as one of the world's largest sources.

The company plans to utilize existing gas production infrastructure to extract lithium-rich brines at depths between 3,200 and 4,000 meters. This project supports the EU's goal of ensuring a strategic raw materials supply by 2030. The extraction process will utilize ion exchange methods rather than traditional open-pit mining, leveraging the company's established expertise and licenses.