Vulcan Energy's Ludwig Resource Upgrade Strengthens Case — But Lionheart Still Holds the Key to Final Approval

Vulcan Energy boosts Ludwig resource by 25%, first cost estimates show competitive C1 costs and 25% IRR, with production solely from indicated resources.

Vulcan Energy has expanded the mineral resource base at its second German lithium project, Ludwig, by a quarter, while simultaneously publishing first-time cost estimates that position the development favourably against industry benchmarks. The combined indicated and inferred resource across the Ludwig and Therese licences now stands at 3.481 million tonnes of lithium carbonate equivalent (LCE), the company confirmed on Wednesday.

What makes the upgrade particularly notable is the quality of the resource underpinning the project's planned output. The targeted production volume of 517,000 tonnes over the project's life draws exclusively on the higher-confidence indicated category, with no reliance on the less certain inferred classification. That shift stems largely from a reclassification of inferred tonnes into indicated resources, following recent technical studies — a sign that Vulcan is steadily firming up the geological data needed before any final investment decision can be contemplated.

The economics take shape

Alongside the resource update, Vulcan released detailed cost projections for Ludwig for the first time. Operating C1 costs are expected to come in at €4,101 per tonne of lithium carbonate. The project also carries a heat-revenue component: roughly 3,125 gigawatt-hours of renewable heat generated annually — partly for internal use, partly for sale — is projected to yield around €42 million in yearly income. That dual-use model of geothermal heat and lithium extraction mirrors the approach already deployed at Vulcan's first project, Lionheart.

There is, however, a key product difference. While Lionheart is geared toward lithium hydroxide monohydrate, Ludwig will produce lithium carbonate, giving Vulcan access to different battery chemistries and end-markets and broadening its product portfolio beyond a single output.

The pre-tax net present value calculation comes in at €2.6 billion, with an internal rate of return of 25%. After tax, the figures shift to a net present value of €2.7 billion and a return of 20.2% — comfortably ahead of the 13.7% projected for Lionheart's first phase. Total capital expenditure for Ludwig is estimated at €1.261 billion, representing a 15% reduction in capital intensity relative to Lionheart. Operating costs of $6,630 per tonne of LCE would place the project in the industry's most competitive cost quartile.

A simplified development approach

Technically, Ludwig is designed around 14 production and 14 injection wells across five sites, feeding an integrated lithium processing facility. Unlike Lionheart, the concept omits an on-site power plant component, relying instead on direct heat supply. That simplified configuration is intended to leverage engineering, permitting and drilling experience gained from Lionheart, with corresponding cost savings.

The resource picture has strengthened considerably on the back of the latest work. Indicated mineral resources jumped 91% to 1,251 kilotonnes of LCE, while inferred resources rose 5% to 2,230 kilotonnes.

Sequencing and funding strategy

Vulcan's management, led by CEO Cristobal Moreno, outlined the project's funding approach during a presentation last Thursday. The company plans to make its final investment decision for Ludwig only after Lionheart has reached production start. In parallel, it has initiated project-level financing discussions and is scouting for strategic partners for Ludwig — a staged approach designed to limit risk before committing substantial capital to the second development.

That sequencing — Lionheart first into production, then the capital decision for Ludwig — signals a more conservative risk posture than pursuing both projects simultaneously. Near-term milestones include 3D seismic surveys, further exploration drilling and deeper technical studies. Any financing package could also incorporate state support.

Market remains cautious

Despite the steady stream of positive operational news, the share price has yet to stage a meaningful recovery. The stock was trading at €1.65, roughly 4.4% below its 50-day average of €1.72. It has declined 35% since the start of the year and sits about 60% below its 52-week high of €4.15, reached in October last year.

Investors did respond with modest enthusiasm to last week's announcements — the shares gained 1.3% in the days following, closing Friday at €1.66 after a 1.4% daily advance. Yet over the past seven trading sessions the stock remains down 2.2%, and on a monthly basis it has lost 6.5%. The price continues to trade below all major moving averages, pointing to persistently weak medium-term momentum even as the operational picture at Ludwig grows more encouraging.

For shareholders, the near-term catalysts remain clear: whether the search for strategic partners yields concrete results, and whether Lionheart hits its planned production start. Until then, the market's focus is likely to stay fixed on execution rather than resource statements, however substantial they may be.