Italian energy major Eni has strengthened its position in the global lithium market after agreeing to invest US$225 million for a 25% stake in Black Giant SpA, the Chilean subsidiary developing the Black Giant lithium project in the Antofagasta region. The strategic investment gives Eni direct exposure to a major lithium development project while securing potential future supply for Europe’s growing battery and energy-storage industries.
The transaction highlights a broader shift in critical minerals investment, with large industrial groups increasingly combining equity participation, technical involvement and long-term offtake agreements to secure access to strategic resources outside their domestic markets.
Eni Takes Strategic Stake in Chilean Lithium Development
Under the agreement announced on 6 July, Eni will acquire a 25% interest in Black Giant SpA, the company through which US-based EnergyX is advancing the Black Giant lithium project.
As part of the transaction, Eni will receive:
- a seat on the project company’s board,
- the right to purchase up to approximately 25% of future lithium production.
The investment provides Eni with direct participation in one of the world’s most important lithium-producing regions while creating a potential supply link between Chilean lithium resources and European downstream industries.
Black Giant Targets 52,500 Tonnes of Lithium Carbonate Production
The Black Giant project is planned to produce up to 52,500 tonnes per year of lithium carbonate during its first two development phases. Located in Chile’s Antofagasta region, one of the world’s leading lithium jurisdictions, the project aims to use EnergyX’s proprietary direct lithium extraction (DLE) technology to recover lithium from brine resources.
EnergyX says its DLE platform is supported by more than 150 patents and is designed to improve lithium recovery efficiency compared with traditional evaporation-based methods. Direct lithium extraction has attracted increasing attention globally because it has the potential to reduce land use, shorten production cycles and improve access to lithium resources that may be difficult to process through conventional methods.
Project Requires Nearly $1 Billion in Development Capital
EnergyX estimates that total investment required for Black Giant will be just below US$1 billion, including financing costs. The company has also secured a US$690 million letter of interest from the US Export-Import Bank (EXIM). The EXIM support remains an indication of potential financing rather than a finalized loan commitment. The project will still require further technical validation, permitting progress and financial arrangements before construction can begin.
EnergyX Reports Competitive Cost Potential
EnergyX has estimated that its engineering studies indicate:
- capital intensity of approximately US$14,500 per tonne of annual production capacity,
- operating costs of around US$2,944 per tonne of lithium carbonate.
These figures suggest the project could potentially achieve competitive economics within the global lithium industry. The estimates remain company projections and must be confirmed through commercial-scale construction, commissioning and long-term operations. Large-scale deployment of direct lithium extraction technology remains one of the key technical challenges facing emerging lithium projects worldwide.
European Battery Strategy Extends Beyond Domestic Mining
Eni’s investment highlights a growing reality in Europe’s critical minerals strategy: securing battery raw materials will not rely solely on projects located within European borders. While the European Union is seeking to expand domestic mining, refining and recycling capacity, major industrial companies are also investing in international resources to diversify supply chains.
Through the Black Giant investment, Eni is combining:
- financial participation,
- technical involvement,
- future offtake rights.
This approach gives the company direct exposure to lithium production while creating a potential supply pathway for European downstream industries.
Lithium Supply Could Support Italian Energy Storage Growth
The agreement also aligns with Eni’s broader plans to expand activities related to stationary battery manufacturing and energy storage solutions in Italy.
Securing access to lithium carbonate could help support future battery supply chains as demand grows for grid-scale storage, renewable energy integration and electrification technologies. Lithium remains one of the most strategically important battery materials, driven by rapid growth in electric vehicles and energy storage systems.
New Financing Model Emerging Across Critical Minerals Sector
The Black Giant transaction reflects a wider financing trend developing across the global critical minerals industry. Rather than relying solely on traditional mining finance, projects are increasingly being supported through combinations of:
- strategic industrial investment,
- government-backed export financing,
- long-term offtake agreements,
- partnerships with downstream manufacturers.
This model allows industrial companies to secure future supply while helping mining developers access the capital needed to advance large projects.
Commercial Success Depends on Remaining Development Challenges
Although Eni’s investment represents a significant commitment, several major challenges remain before Black Giant can become a producing lithium operation.
Future project success will depend on:
- confirmation of lithium resources,
- Chilean environmental and mining approvals,
- brine-management solutions,
- direct lithium extraction performance,
- successful scale-up from pilot systems to commercial production.
The US$225 million equity investment provides a concrete financial commitment, but the project’s ultimate viability will depend on proving that EnergyX’s technology can deliver consistent recovery rates and competitive economics at industrial scale. If successful, Black Giant could become an important new source of lithium supply while strengthening connections between South American resources and Europe’s expanding battery and energy-storage industries.
