Altmark Brine Signals a Major European Lithium Supply

Neptune Energy’s Altmark project in northern Saxony-Anhalt, Germany, has emerged as a major European lithium prospect after an independent estimate pegged 43 million tons of lithium carbonate equivalent across its licenses. The company is piloting direct lithium extraction from hot brine—leveraging decades of gas-field infrastructure—with a second pilot in 2025 successfully producing battery-grade lithium carbonate, and a third pilot starting later that year to test adsorption, all ahead of a full demonstration phase and commercial production tied to European aims for domestic supply.