DOE Backs $100M Direct Lithium Extraction Plant at Great Salt Lake

The U.S. Department of Energy has selected Lilac Solutions for a $100 million grant to build a commercial lithium plant that its backers say would double current U.S. domestic lithium output. The target site is the Great Salt Lake in Utah, a brine so dilute that conventional extraction essentially cannot work there.

That contradiction is the whole story. The award is the largest single direct lithium extraction selection in the current DOE funding round, one of seven projects sharing $500 million announced in August 2026. It lands while China still controls more than 80% of refining capacity for many strategic minerals, according to the International Energy Agency (IEA), and it marks the first federal bet on commercial-scale extraction from an ultra-low-grade North American brine.

Here is what the grant actually confirms about how far this technology has matured, what the Utah facility will and will not produce by 2028, and where it leaves the U.S. lithium supply picture. Read this before the next conversation about domestic lithium, because the headline number and the verified numbers are not the same thing.

What the DOE selection actually covers, and what is still pending

The $100 million figure is real, but the money has not moved yet. The award is a “selection” under the DOE’s Battery Materials Processing Grants programme, which is a different thing from a disbursed grant.

As of September 2026, no publicly accessible document confirms that Lilac and the DOE have signed a fully executed cooperative agreement. The selection remains contingent on completing final negotiations before any federal funds are released.

The DOE Battery Materials Processing Grants programme specifies that a selection is a preliminary designation subject to final cooperative agreement negotiations before any federal funds are released, which is why the $100 million figure and the disbursed amount are not yet the same number.

The legal entity receiving the selection is Waterleaf P1 HoldCo, LLC, a Lilac Solutions subsidiary, with engineering firm Hatch participating as a technical partner. The federal share sits within the $500 million distributed across the seven projects chosen in the August 2026 round.

DOE battery materials funding across the August 2026 round covers six other projects alongside the Lilac selection, each targeting different brine types, geographies, and processing pathways as part of the federal effort to build redundancy into the domestic supply chain.

What Lilac has already locked in matters as much as the pending federal money. The company holds full off-take agreements covering all projected output, and its environmental permits are in the final approval stage.

“The DOE’s backing underscores the strategic importance of domestically produced lithium for America’s industrial and energy future,” said Raef Sully, Chief Executive Officer of Lilac Solutions, who framed the selection as a signal of the technology’s commercial maturity.

For anyone tracking this project, the distinction between selection and disbursement is not a technicality. It tells you the venture still carries execution risk at the contracting stage, not just the construction stage. The off-take and permit progress signal genuine commercial momentum, but they run on a separate timeline from the federal cheque.

Can Lilac’s technology actually work in a brine this dilute?

Before the performance numbers can mean anything, you need to understand why this particular brine is so difficult. Once you grasp that, the figures stop reading as promotion and start reading as a genuine result.

Why the Great Salt Lake brine is a worst-case test for DLE

Great Salt Lake brine carries a lithium concentration of roughly 70 mg/L, which classifies it as ultra-low-grade, and it comes loaded with impurities, specifically a high magnesium-to-lithium ratio. Conventional evaporation pond methods struggle badly with resources like this, delivering lithium recovery rates of only 40-60% while demanding enormous land footprints, heavy chemical use, and high water consumption.

Those same characteristics that make the resource so hard also make it a commercially important proof point. If direct lithium extraction (DLE), a family of technologies that pull lithium directly from brine without waiting for it to evaporate, can work here, it can work almost anywhere.

Direct lithium extraction represents a family of technologies at very different maturity levels, with most global DLE systems sitting at Technology Readiness Level 4 or below while only select ion-exchange and adsorption systems have reached TRL 7 to 9.

How the ion-exchange process handles ultra-low-grade brine

Lilac relies on ion-exchange beads, small particles engineered to capture lithium from the brine while rejecting other elements. In testing on the 70 mg/L Great Salt Lake resource, the company reported 99.98% impurity rejection over 280 cycles.

The system runs as a closed loop. DOE and Utah Division of Water Quality documents specify the plant is designed to be non-consumptive, returning processed fluid to the lake with no net water loss.

The non-consumptive design is not just a green credential. It is the regulatory precondition for operating at the Great Salt Lake at all, and it is a large part of why federal agencies are backing DLE over conventional alternatives. For context, most DLE technologies globally sit at Technology Readiness Level (TRL) 4 or below, with only select adsorption and ion-exchange systems reaching TRL 7 to 9. That backdrop is what makes a reported result on the hardest brine worth your attention.

Phase 1 output, the “doubling” claim, and what 5,000 tonnes actually means

The facility on the northeastern shore of the Great Salt Lake targets 5,000 metric tonnes per year of battery-grade lithium carbonate by 2028, with a longer-term pathway to 20,000 metric tonnes per year. Lilac and the DOE say that Phase 1 figure would double current U.S. domestic output.

That doubling claim deserves scrutiny, because the baseline behind it is not public.

• Phase 1 target: 5,000 metric tonnes per year of battery-grade lithium carbonate by 2028
• Long-term target: 20,000 metric tonnes per year
• 2030 sector projection: approximately 55,000 tonnes per year LCE across four advanced U.S. DLE projects

Neither the DOE nor Lilac has published the specific numeric baseline used to calculate the doubling metric. The U.S. Geological Survey (USGS) withholds all numeric U.S. lithium mine production data in both its 2025 and 2026 Mineral Commodity Summaries to avoid disclosing proprietary company information.

Independent analysis by Resources for the Future, citing a 2025 Energy Institute estimate, places current U.S. output at approximately 900 metric tonnes per year of lithium carbonate equivalent (LCE). The USGS notes that commercial-scale production currently comes from a Nevada continental brine operation, while a Utah magnesium-producer brine-tailings operation was idled in 2024.

Set the 5,000 tonne figure against the wider domestic pipeline and the scale becomes clearer. Projections suggest four advanced U.S. DLE projects could reach roughly 55,000 tonnes per year LCE by 2030.

That combined pipeline would cover only about 13% of projected U.S. lithium demand.

U.S. lithium demand projections help contextualise why a 5,000 tonne Phase 1 output figure, even combined with other advanced DLE projects, reaches only around 13% of the supply the sector anticipates needing by the end of the decade.

The gap between the doubling headline and the verified numbers is not a reason to dismiss the project. It is a reason to be precise about what the grant advances: a meaningful but modest increment in domestic supply, not a standalone fix for U.S. import dependency. If you are sizing your exposure to the American lithium supply chain, the accurate output figure matters far more than the headline multiple.

How Utah validates Lilac’s South America play, and where DLE stands globally

The Utah result matters well beyond its own tonnage. Prove that DLE works in the hardest brine, and you have built the argument for every easier brine on the planet.

That is the strategic logic connecting Utah to Chile. Great Salt Lake brine is significantly more dilute and impurity-laden than Chilean salt flat brine, so a successful Utah deployment effectively validates the economics of Lilac’s South American pipeline.

Felipe de Mussy, Lilac Solutions’ Latin America President, has noted that Chilean salt flats offer higher lithium grades than the Great Salt Lake, which makes Utah the harder commercial proof point. Lilac’s June 2024 technical documentation reported that its Gen-2 ion-exchange pilot plant in Chile achieved 94% average lithium recovery and 99% impurity rejection. The company has concluded its Chilean pilot programmes and is evaluating additional projects with local mining producers.

Utah also arrives amid a cluster of North American DLE milestones.

The federal money extends further still, through the DOE Loan Programs Office and the broader policy push to reduce reliance on China.

• $2.8 billion American Battery Materials Initiative and $3 billion in battery-supply-chain grants
• $2.3 billion loan for Lithium Americas’ Thacker Pass
• $996 million for Ioneer’s Rhyolite Ridge
• IEA data showing China controls more than 80% of refining capacity for many strategic minerals

For anyone evaluating Lilac as a company, the read is this: the grant is not simply project finance. It is a technology certification, and every subsequent project Lilac pitches to partners and off-takers in South America gets stronger because Utah exists.

What happens between now and 2028, and what could still go wrong

The forward path is specific enough to track, and the risks are real enough to respect. Here is the sequence that stands between selection and production.

1. Execute the DOE cooperative agreement
2. Complete environmental permit approval (currently in the final approval stage)
3. Begin commercial-scale construction
4. Commission Phase 1 production, targeted for 2028

Each step carries structural risk that applies to every commercial DLE scale-up, not just this one. Moving from a validated pilot to a plant producing 5,000 to 20,000 tonnes per year is not a linear extension.

Experts caution that scaling to commercial output requires multi-year validation of sorbent lifespans and energy consumption, alongside permitting timelines that have historically slipped on U.S. domestic mining projects.

The most telling number sits in the wider sector. According to analysis attributed to the Dallas Fed, and which independent verification has not yet confirmed, 21 U.S. projects had proposed using DLE technology as of August 2025, while only three domestic lithium projects were officially under construction.

That gap between 21 proposals and three construction sites is the single most useful data point for reading the Utah selection. It shows the distance between being chosen and pouring concrete, and it is why the 2028 timeline should be treated as a target with meaningful dependencies, not a confirmed delivery date.

Why does execution speed matter so much? Because with China still controlling more than 80% of strategic mineral refining, every quarter a domestic project stays on the drawing board is a quarter the supply gap stays open. If you are tracking this space, the difference between genuine advancement and announcement-stage momentum is what you should be watching for.

A credible proof point, not yet a supply solution

The Utah selection confirms one important thing and leaves another unresolved. It confirms that direct lithium extraction can operate commercially in ultra-low-grade brine, a genuine technical milestone. It does not, on its own, resolve U.S. lithium import dependency, and the verified output figures make that plain.

The strategic value compounds over time. Every DLE project that scales successfully in a difficult resource environment strengthens the commercial case for the next, and Utah now sits inside that chain.

Critical mineral supply chains encompass more than extraction: refining, processing, and cell manufacturing each represent separate chokepoints, and China’s position across those downstream stages is the structural vulnerability that U.S. domestic brine projects are designed to address, not replace outright.

Whether the 2028 timeline holds comes down to three variables worth watching: execution of the DOE cooperative agreement, finalisation of the environmental permits, and proof that the sorbent performs at commercial scale over years, not cycles.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results. Financial projections are subject to market conditions and various risk factors, and forward-looking statements are speculative and subject to change based on market developments and company performance.