Case study: Critical minerals supply chains (lithium, cobalt, rare earths) — a startup-to-enterprise scale story

Global demand for lithium alone is projected to reach 3.8 million tonnes of lithium carbonate equivalent by 2030, a fourfold increase from 2022 levels, yet fewer than 15% of critical minerals startups that raised Series A funding between 2018 and 2023 successfully scaled to enterprise-level operations supplying more than three major OEM customers (International Energy Agency, 2025). This case study traces how three startups in the critical minerals supply chain navigated the path from pilot operations to enterprise-scale suppliers, revealing the funding milestones, offtake structures, and regulatory strategies that separated the companies that scaled from those that stalled.

Why It Matters

The energy transition depends on a reliable supply of lithium, cobalt, nickel, rare earth elements, and other critical minerals. The EU Critical Raw Materials Act, enacted in 2024, mandates that by 2030 at least 10% of annual EU consumption of strategic raw materials must be domestically extracted, 40% processed domestically, and 25% recycled from waste. The United States Inflation Reduction Act ties EV tax credits to domestic sourcing thresholds for battery minerals, requiring 80% of critical mineral value to come from the US or free trade agreement partners by 2027. China currently controls approximately 60% of global lithium refining, 70% of cobalt refining, and more than 85% of rare earth processing capacity, creating concentration risks that policymakers and procurement teams across the EU, US, and allied nations are actively working to reduce (U.S. Geological Survey, 2025).

For policy and compliance professionals, the ability to evaluate which critical minerals supply chain startups can actually deliver at scale is essential. A startup that secures a mining license but cannot build processing capacity within regulatory timelines creates compliance gaps for downstream manufacturers. The companies profiled here offer concrete lessons on what enterprise-ready critical minerals infrastructure looks like in practice and where the most common scaling failures occur.

Key Concepts

Mine-to-cathode integration refers to supply chain models where a single company or vertically integrated joint venture controls the extraction, refining, and cathode active material production stages. This approach reduces intermediary costs and provides downstream customers with full provenance documentation, which is increasingly required under the EU Battery Regulation's due diligence provisions.

Direct lithium extraction (DLE) encompasses technologies that selectively extract lithium from brine resources without traditional evaporation ponds. DLE methods include adsorption, ion exchange, and solvent extraction, and they can reduce water consumption by 80 to 90% compared to conventional evaporation while cutting production timelines from 12 to 18 months to 24 to 48 hours. DLE is considered critical for unlocking lower-grade brine resources in Europe, the United States, and Argentina.

Offtake agreements are binding contracts in which a buyer commits to purchasing a specified volume of mineral output over a defined period, typically 5 to 15 years. For critical minerals startups, securing offtake agreements from major battery manufacturers or automakers is essential for obtaining project finance, as lenders require revenue certainty before committing capital to extraction and processing facilities.

Artisanal and small-scale mining (ASM) accounts for approximately 15 to 30% of global cobalt production, primarily in the Democratic Republic of Congo. ASM operations present significant human rights and environmental risks, including child labor and uncontrolled waste discharge. Due diligence requirements under the EU Conflict Minerals Regulation and the OECD Due Diligence Guidance require importers to identify and mitigate ASM-related risks in their supply chains.

What's Working

Lilac Solutions: Direct Lithium Extraction Scaling From Pilot to Commercial Deployment

Lilac Solutions, founded in Oakland, California, in 2016, developed an ion exchange-based DLE technology that selectively extracts lithium from brine without evaporation ponds. The company's scaling trajectory illustrates how a technology startup can bridge the gap between laboratory demonstration and commercial mineral production. After operating a pilot plant processing 5 tonnes of lithium carbonate equivalent per year from 2018 to 2021, Lilac secured $150 million in Series B funding led by Breakthrough Energy Ventures and T. Rowe Price in 2022, followed by a $50 million strategic investment from BMW i Ventures (Lilac Solutions, 2024).

The critical commercial milestone came in 2023 when Lilac signed a partnership with Lake Resources to deploy its DLE technology at the Kachi project in Catamarca, Argentina. The project targeted initial production of 25,500 tonnes per year of battery-grade lithium carbonate, with a capital investment of approximately $800 million for the full facility. Lilac's technology reduced the project's water footprint by 85% compared to conventional evaporation and compressed the timeline from brine extraction to saleable product from 18 months to under 48 hours, directly addressing both the environmental permitting requirements of Argentine provincial authorities and the ESG screening criteria of institutional project finance lenders (Lake Resources, 2024).

By Q2 2025, Lilac had signed technology licensing and deployment agreements with three additional lithium developers in Argentina, the United States, and Germany. The company's go-to-market model shifted from selling equipment to a technology-as-a-service approach, charging per tonne of lithium carbonate produced. This model reduced the upfront capital barrier for mining partners and created recurring revenue for Lilac, addressing a fundamental challenge in cleantech scaling: generating cash flow before full-scale facilities reach nameplate capacity.

Cobalt Blue: From Exploration to Integrated Cobalt-Nickel Production in Australia

Cobalt Blue, an Australian mining company founded in 2016, developed the Broken Hill Cobalt Project in New South Wales, targeting one of the largest cobalt deposits outside the DRC. The company's journey from exploration to enterprise illustrates the regulatory, technical, and market challenges specific to cobalt supply diversification. Cobalt Blue completed its definitive feasibility study in 2022, projecting annual production of 3,400 tonnes of cobalt sulfate and 11,600 tonnes of nickel sulfate over a 20-year mine life, with a total capital cost of A$990 million (Cobalt Blue, 2024).

The company's scaling strategy centered on three elements. First, Cobalt Blue secured a binding offtake term sheet with LG Energy Solution in 2023 covering 3,000 tonnes per year of cobalt sulfate for a minimum of 7 years, providing the revenue certainty needed for project financing. Second, the company obtained Major Project Status from the Australian federal government in 2022, unlocking access to streamlined environmental approvals, export credit agency financing, and the Critical Minerals Facility administered by Export Finance Australia. Third, Cobalt Blue developed a proprietary pyrite-to-sulfate processing method that eliminated the need for conventional smelting, reducing Scope 1 and 2 emissions by approximately 70% compared to DRC-sourced refined cobalt and producing a zero-liquid-discharge operation that met the water stewardship requirements of downstream EU battery manufacturers.

By 2025, Cobalt Blue had advanced to the front-end engineering and design (FEED) stage, with construction financing expected to close in late 2025. The project's compliance advantages under the EU Battery Regulation's carbon footprint declaration requirements and the IRA's domestic sourcing provisions positioned Broken Hill cobalt as a premium alternative to DRC-sourced material, commanding a projected 5 to 10% pricing premium above LME cobalt benchmarks.

MP Materials: Rare Earth Mine-to-Magnet Vertical Integration in the United States

MP Materials, which acquired the Mountain Pass rare earth mine in California in 2017, represents the most advanced Western rare earth supply chain scaling story. The company restarted mining operations at Mountain Pass in 2018 and reached production of approximately 43,000 tonnes of rare earth oxide concentrate per year by 2023, making it the largest rare earth producer outside China. MP Materials went public via a SPAC merger in 2020, raising $545 million, and subsequently invested $700 million in downstream processing and magnet manufacturing facilities (MP Materials, 2025).

The company's enterprise transition hinged on moving beyond concentrate production into separated rare earth oxides and finished neodymium-iron-boron (NdFeB) magnets. In 2022, MP Materials broke ground on a rare earth oxide separation facility at Mountain Pass, with initial capacity to produce 6,000 tonnes per year of separated oxides. In 2023, the company opened a magnet manufacturing facility in Fort Worth, Texas, with a production target of 1,000 tonnes of finished NdFeB magnets per year, sufficient to supply motors for approximately 500,000 EVs annually. General Motors signed a multi-year supply agreement in 2022 for NdFeB magnets produced at the Fort Worth facility, providing a cornerstone offtake that validated the mine-to-magnet integrated model (General Motors, 2023).

MP Materials received $58.5 million in grants from the U.S. Department of Defense under Title III of the Defense Production Act to support its separation and magnet manufacturing operations. This public funding, combined with IRA-eligible production tax credits for domestically processed critical minerals, reduced the company's effective capital cost for downstream integration by an estimated 20 to 25%.

What's Not Working

Permitting timelines versus market windows remains the defining challenge for critical minerals startups in Western jurisdictions. The average time from mining license application to first production in Australia is 7 to 10 years; in the EU, it can exceed 12 years. The EU Critical Raw Materials Act targets reducing permitting to 27 months for strategic projects, but implementation at the member state level has been uneven. Startups that secured offtake agreements with 2027 delivery deadlines face the risk that permitting delays will push first production beyond contract commencement dates, triggering penalty clauses or agreement termination.

Processing technology risk at commercial scale has derailed several promising projects. DLE technologies that perform well in controlled pilot conditions sometimes encounter unexpected challenges with real-world brine chemistry, including higher concentrations of magnesium, calcium, or boron that foul ion exchange resins or membranes. At least two DLE startups that raised significant venture capital between 2020 and 2023 reported recovery rates 15 to 25 percentage points below pilot performance when processing brine from their target deposits, requiring additional capital for process redesign (Benchmark Mineral Intelligence, 2025).

Geopolitical concentration in refining means that even startups that successfully extract raw minerals often depend on Chinese refineries for intermediate processing. As of 2025, no commercial-scale lithium hydroxide refinery operates in the EU, and only two operate in North America. Startups that built business models around "mine-to-market" value propositions found that the refining gap added 6 to 12 months to their product delivery timelines and reduced their compliance value under IRA and EU sourcing requirements.

Price volatility undermines project economics for ventures at the financing stage. Lithium carbonate spot prices fell from a peak of approximately $80,000 per tonne in late 2022 to under $15,000 per tonne by mid-2024, before partially recovering to $22,000 per tonne in early 2025. This volatility makes it difficult for startups to demonstrate positive NPV projections to project finance lenders, who typically require breakeven at or below the 25th percentile of the commodity price cycle. Several mid-stage lithium startups deferred final investment decisions in 2024 as a result (S&P Global, 2025).

Key Players

Established Companies

• Albemarle Corporation: world's largest lithium producer, operating extraction and refining facilities in Australia, Chile, and the United States
• Umicore: Belgian materials technology company producing cathode active materials and operating closed-loop battery recycling
• Lynas Rare Earths: largest rare earth producer outside China, operating the Mount Weld mine in Australia and a separation plant in Malaysia

Startups

• Lilac Solutions: ion exchange-based DLE technology developer, deploying commercial systems in Argentina and the United States
• Cobalt Blue: Australian cobalt-nickel project developer with a proprietary low-emission processing method and LG Energy Solution offtake
• MP Materials: vertically integrated US rare earth company progressing from mining to magnet manufacturing
• Vulcan Energy Resources: German-Australian company developing zero-carbon lithium extraction from geothermal brines in the Upper Rhine Valley
• Nth Cycle: Massachusetts-based startup using electro-extraction to recover critical minerals from recycled batteries and mine waste

Investors and Funders

• Breakthrough Energy Ventures: Bill Gates-backed fund investing in DLE technology and critical minerals processing
• Export Finance Australia: government export credit agency providing concessional finance for Australian critical minerals projects
• European Investment Bank: financing critical minerals projects aligned with the EU Critical Raw Materials Act

Action Checklist

• Map your organization's critical mineral dependencies by volume, source country, and refining jurisdiction to identify concentration risks subject to EU CRM Act and IRA compliance thresholds
• Evaluate DLE technology suppliers by requesting at minimum 12 months of continuous pilot data from brine chemistry matching your target deposit, including recovery rate variance and reagent consumption
• Structure offtake agreements with critical minerals startups to include milestone-based delivery schedules tied to permitting and construction progress rather than fixed calendar dates
• Require supply chain due diligence documentation from cobalt suppliers consistent with OECD Due Diligence Guidance for Responsible Supply Chains, including ASM risk assessments for DRC-sourced material
• Assess the compliance value of domestically sourced or allied-nation-sourced minerals under IRA Section 45X production tax credits and EU Battery Regulation carbon footprint requirements
• Engage with government-backed critical minerals programs, including the EU Critical Raw Materials Club and the Minerals Security Partnership, to access early-stage supply agreements and co-investment opportunities
• Build internal technical capacity for mineral supply evaluation by training procurement staff on processing technology maturity levels, bankable feasibility study interpretation, and commodity price risk hedging

FAQ

Q: What is the minimum offtake volume needed to secure competitive pricing from critical minerals startups? A: For lithium carbonate and lithium hydroxide, competitive pricing from emerging Western producers typically requires commitments of 2,000 to 5,000 tonnes per year over 5 to 10 year terms. Below this threshold, startups often prioritize larger offtake partners who provide the revenue certainty needed for project finance. For cobalt sulfate and nickel sulfate, minimum competitive volumes start at 500 to 1,000 tonnes per year. Procurement teams with smaller requirements can access competitive terms through buying consortia or intermediary trading houses that aggregate demand across multiple buyers.

Q: How long does it typically take a critical minerals startup to move from feasibility study to first commercial production? A: Based on project timelines tracked by Benchmark Mineral Intelligence, critical minerals projects in Australia and the Americas that complete definitive feasibility studies typically require 3 to 5 years to reach first commercial production, assuming financing closes within 12 months of the feasibility study. In the EU, permitting complexity can extend this timeline to 5 to 8 years. DLE technology companies that license their technology to existing resource holders can reach commercial deployment faster, typically 2 to 3 years from partnership signing, because they leverage existing mining permits and infrastructure.

Q: What due diligence steps should procurement teams take when evaluating critical minerals startups as suppliers? A: At minimum, request an independent technical review of the startup's processing technology by a recognized engineering firm such as Hatch, SNC-Lavalin, or Wood Mackenzie. Verify resource estimates against NI 43-101 or JORC Code-compliant reports. Review the startup's permitting status including environmental impact assessments, water use permits, and community benefit agreements. Assess the financial viability of the project by reviewing the bankable feasibility study's capital cost estimates, operating cost projections, and sensitivity analysis at the 25th percentile commodity price. Finally, confirm that the startup's supply chain traceability systems can produce the documentation required under the EU Battery Regulation and OECD Due Diligence Guidance.

Q: How do EU and US regulatory requirements affect critical minerals sourcing decisions? A: The EU Battery Regulation requires carbon footprint declarations for batteries sold in the EU starting in 2025, with maximum carbon footprint thresholds expected by 2027. Minerals processed using coal-intensive refining methods, which characterizes much of Chinese processing, may not meet these thresholds. The US IRA requires increasing percentages of critical mineral value to originate from the US or free trade agreement partners to qualify for EV tax credits: 50% in 2024, rising to 80% by 2027. These regulations create a structural pricing premium of 5 to 15% for minerals sourced and processed in jurisdictions with lower-carbon energy grids and verifiable chain of custody, directly benefiting Western-based startups that can demonstrate compliance.

Sources

• International Energy Agency. (2025). Global Critical Minerals Outlook 2025. Paris: IEA.
• U.S. Geological Survey. (2025). Mineral Commodity Summaries 2025. Reston, VA: USGS.
• Lilac Solutions. (2024). Technology Deployment Update: Direct Lithium Extraction at Commercial Scale. Oakland, CA: Lilac Solutions Inc.
• Lake Resources. (2024). Kachi Lithium Brine Project: Updated Feasibility Study and Partnership Summary. Adelaide: Lake Resources NL.
• Cobalt Blue Holdings. (2024). Broken Hill Cobalt Project: Definitive Feasibility Study Update and Offtake Summary. Sydney: Cobalt Blue Holdings Ltd.
• MP Materials. (2025). Annual Report 2024: Building an Integrated Rare Earth Supply Chain. Las Vegas, NV: MP Materials Corp.
• General Motors. (2023). Rare Earth and Battery Materials Supply Agreements: Investor Summary. Detroit, MI: General Motors Company.
• Benchmark Mineral Intelligence. (2025). Lithium Ion Battery Supply Chain Database: Project Timelines and Technology Risk Assessment. London: Benchmark Mineral Intelligence Ltd.
• S&P Global. (2025). Critical Minerals Price Outlook and Project Finance Trends. New York, NY: S&P Global Market Intelligence.