Vulcan Energy reports strong results at Lionheart Well
Subscribe to our free newsletter today to keep up to date with the latest energy, oil and gas news.
Vulcan Energy Resources has reported strong production test results from the first well drilled for its flagship Lionheart project in the Upper Rhine Valley in Germany. The early data suggest the company remains on track to deliver sustainable lithium production at commercial scale, with significant implications for Europe’s electric vehicle supply chain and clean energy ambitions.
The first production well, LSC-1b, is a sidetrack drilled at the Schleidberg site near Landau. It is part of Phase One of Vulcan’s integrated geothermal and lithium extraction project. According to Vulcan, the well has demonstrated a productivity index between 2.1 and 2.5 liters per second per bar, with corresponding flowrates of 105 to 125 liters per second under a planned operational drawdown of 50 bars. These results match or exceed expectations laid out in the company’s field development plan, which was built around average flowrates of 84 to 94 liters per second.
In addition to flow performance, Vulcan confirmed that other critical parameters including temperature, matrix permeability, and lithium concentration also met or exceeded its original planning assumptions. These indicators are essential to both the energy generation and lithium extraction performance of the resource.
De-risking phase one
Cris Moreno, Managing Director and CEO of Vulcan Energy, said the results validate the company’s approach and offer further confidence in the broader development plan. Moreno noted that the well was drilled and tested safely and within budget by Vulcan’s in-house drilling subsidiary, Vercana, and that execution continues on schedule.
“This result from LSC-1b provides an encouraging start to our drilling program. It confirms that the reservoir quality is high, and our integrated energy and lithium production targets are well-founded,” said Moreno. “It further de-risks Phase One of the Lionheart project, which is already under construction following our final investment decision in December.”
The Lionheart project, which combines geothermal energy production with lithium extraction from deep brine aquifers, represents one of the first commercial-scale attempts to produce battery-grade lithium in Europe without the high carbon intensity and environmental impact associated with traditional mining.
The site is strategically located in the Upper Rhine Graben, a geologic rift zone rich in geothermal potential and known lithium-bearing brine systems. The combination of natural heat and mineral resources allows Vulcan to operate an integrated facility where the same thermal brine stream is used for clean electricity, district heating, and lithium hydroxide production.
Scaling for strategic supply
Once fully operational, the Lionheart project is expected to deliver 24,000 tonnes per year of lithium hydroxide monohydrate, a key component in lithium-ion batteries. Alongside lithium, the facility will generate 275 gigawatt-hours of renewable electricity and 560 gigawatt-hours of thermal energy annually. Vulcan plans to operate the project over a 30-year lifespan, serving automotive and battery manufacturers across Europe.
The company has already signed offtake agreements with several major automakers, and the European Union has identified lithium as a critical raw material under its green industrial strategy. As Europe moves to reduce dependence on imported Chinese lithium and boost domestic clean tech production, Vulcan’s zero-carbon model could play a pivotal role in reshaping the regional battery supply chain.
The initial LSC-1b well is one of 24 production and reinjection wells planned for Phase One. Drilling will continue throughout 2026, with a second rig set to be deployed in the second half of the year. The staged approach will allow Vulcan to continuously evaluate geological variability and fine-tune its dual extraction and power generation systems.
Financing and execution outlook
The positive well performance follows a series of significant milestones for Vulcan. In December 2025, the company secured full financing for Phase One, including equity commitments and support from the European Investment Bank, which provided a quarter-billion-euro loan as part of the EU’s green industrial acceleration plan.
The project’s backing reflects growing institutional support for low-emission raw material development in Europe. Vulcan has also partnered with engineering and automation firms such as ABB to optimize system performance and scale digital operations across its wellfield and processing facilities.
With construction progressing and early subsurface results aligning with expectations, Vulcan Energy is positioning itself as a first mover in sustainable lithium production. While traditional hard rock and brine lithium operations dominate global supply, the company’s geothermal-lithium model offers an alternative pathway that could shift the conversation around critical mineral sourcing.
Looking ahead
Commercial lithium production from the Lionheart site is expected to begin by 2028. In the meantime, Vulcan’s focus remains on safe, efficient, and phased development of its wellfield infrastructure. If the remaining wells replicate or improve on LSC-1b’s performance, the company will be well placed to deliver on both its production and environmental promises.
For European policymakers and electric vehicle manufacturers facing increasingly complex sourcing challenges, the success of Vulcan Energy’s Lionheart project could provide a blueprint for how clean energy systems and raw material strategies can work together to power the transition.
Sources