Vulcan Energy has released comprehensive technical results for its Mannheim licence in Germany’s Upper Rhine Valley Brine Field. Drawing on extensive new 3D seismic surveys and updated geological modelling, the company has refined its lithium brine resource estimate by slightly revising the lithium grade from 153 to 155 mg/L. This update, together with detailed reinterpretations identifying additional fault zones and reservoir subdivisions, has led to an upgrade in classification for parts of the resource from inferred to indicated. In parallel, Vulcan Energy has presented a maiden geothermal resource estimate for the same area, laying the groundwork for a future phase of integrated lithium and renewable energy production. The announcement details a robust technical review that encompasses conductor temperature profiles, reservoir modelling, petrophysical data and a range of field measurements. Highlights include the use of new seismic data to better define the geometry of the key Permo‐Triassic formations and fault damage zones, with calculated gross rock volumes supporting the resource estimates. From a process perspective, the company intends to harness naturally high geothermal heat to drive its proprietary adsorption-based lithium extraction technology and to supply renewable heat—potentially to local district heating networks under an exclusive heat supply arrangement with a major local energy provider. Alongside the in-depth technical information, Vulcan Energy’s update includes financial notes on its development pipeline. The Phase One Lionheart project has secured conditional debt commitments, government grants and a sizeable financing envelope, demonstrating investor and government support for a sustainable range of projects designed to decarbonise battery production in Europe. While the Mannheim development is at an earlier stage, Vulcan Energy is undertaking its scoping study and planning further exploration and well-drilling programmes to enhance the overall project outlook. Market sentiment based on the news is mixed but cautiously optimistic. On the bullish side, the enhanced resource estimates, improved geological certainty provided by high-definition seismic data, and the strategic alignment with the European Critical Raw Materials Act are positive signals for long-term prospects. The integration of renewable geothermal energy into the lithium extraction process also offers a compelling path toward low-carbon production in a high-demand market. On the bearish side, uncertainties remain regarding the high capital cost and technical risks of deep well drilling, the absence of in-field data from Mannheim itself, and potential delays or increased dilution effects in lithium extraction that could affect production efficiency and financial returns in the near term. Overall, the announcement positions Vulcan Energy as a forward-thinking player seeking to combine proven geothermal technology with innovative lithium extraction to meet European sustainability goals, while also highlighting areas where further exploration and technical validation will be critical to de-risk the next stage of development.