Vulcan Energy (ASX:VUL) has achieved robust production flow test results from its LSC-1b sidetrack well, part of the Phase 1 Lionheart Project field development plan in Germany's Upper Rhine Valley Brine Field.
Following earlier drilling and geological success reported in November 2025, the test confirmed strong well deliverability, with production potential ranging between 105 and 125 l/s—above the Phase 1 FDP average of 84–94 l/s.
Production test equipment was operated at maximum capacity, while multi-step testing indicated productivity index values of 2.1–2.5 l/s/bar.
These results reinforce confidence in the Lionheart FDP as construction continues, backed by project financing secured in December 2025.
Phase 1 targets integrated lithium and renewable energy production, including 24,000 tonnes of lithium hydroxide monohydrate annually—enough for roughly 500,000 EV batteries—alongside 275 GWh of renewable power and 560 GWh of heat for local consumers over an estimated 30-year project life.
Vulcan’s Managing Director Cris Moreno said the successful test further de-risks the project, with first commercial lithium production targeted for 2028 and the company poised to supply sustainable, low-cost lithium to Europe’s battery and EV industry.