• Hard rock, brine, and oilfield sources each require a different extraction method.
• Traditional methods dominate supply today but are too slow and land-intensive to scale alone.
• Direct Lithium Extraction recovers lithium in hours, with recovery rates above 90%.
• ÐÓ°ÉPro’s GET-Lit combines three DLE technologies, backed by 150+ patents.

The main lithium extraction methods are hard rock mining, solar evaporation from brine, and Direct Lithium Extraction, which encompasses adsorption, solvent extraction, and membrane separation. 

Geothermal brine, oilfield produced water, and battery recycling are growing secondary sources. Each method suits a different resource type, carries different environmental trade-offs, and produces lithium at a different speed and cost.

What Is Lithium Extraction?

Lithium extraction is the process of recovering lithium from natural resources and refining it into battery-grade compounds, typically lithium carbonate or lithium hydroxide.

Unlike metals such as copper or iron, lithium isn’t mined in its pure form. Instead, it is found in three main resource types: hard-rock minerals, underground brines and emerging sources such as geothermal fluids and oilfield produced water. 

Each requires a different extraction method, with its own balance of cost, efficiency and environmental impact. Learn more about where lithium comes from and how these deposits form.

Traditional hard-rock mining and solar evaporation still supply most of the world’s lithium. However, growing demand for electric vehicles and energy storage is accelerating the adoption of Direct Lithium Extraction (DLE), which offers a faster and more efficient way to recover lithium from brines.

The sections below explain how each extraction method works, where it is used and the advantages and limitations of each approach.

The Main Lithium Extraction Methods

Today’s lithium supply comes from three primary extraction methods. Hard-rock mining remains the largest source globally, while solar evaporation has long been the standard for producing lithium from underground brines. 

More recently, Direct Lithium Extraction has emerged as an alternative that can recover lithium more quickly and from a wider range of brine resources.

Although all three methods produce the same battery-grade lithium compounds, they differ significantly in how lithium is recovered, the resources they can process and their environmental footprint.

Hard Rock Mining

Hard-rock mining extracts lithium from spodumene and other lithium-bearing pegmatite minerals using conventional open-pit or underground mining techniques.

After mining, the ore is crushed, concentrated, roasted and chemically processed to produce battery-grade lithium carbonate or hydroxide. It is a well-established method that accounts for most global lithium production, particularly in Australia.

Hard-rock mining is reliable and widely deployed, but it is also energy intensive, with relatively long project development timelines and recovery rates typically ranging from 40 to 70%.

Solar Evaporation

Solar evaporation extracts lithium from underground brines by pumping them into large evaporation ponds. Over 12 to 24 months, sunlight concentrates the dissolved lithium before it is processed into battery-grade products.

The method has supplied lithium for decades and remains one of the industry’s lowest-cost production routes in regions with high evaporation rates, such as South America’s Lithium Triangle.

Its main drawbacks are long production times, recovery rates of around 20 to 50%, and significant water loss through evaporation.

Direct Lithium Extraction (DLE)

Direct Lithium Extraction is a group of technologies that selectively remove lithium from brine in hours rather than months.

Instead of relying on evaporation, DLE captures lithium ions directly using adsorption, solvent extraction or membrane separation. Recovery rates of 80 to 95% are achievable, while spent brine can typically be reinjected underground, reducing water loss and the overall land footprint.

ÐÓ°ÉPro’s GET-Lit platform combines all three DLE technologies, allowing the extraction process to be tailored to different brine chemistries. This flexibility enables lithium recovery from oilfield produced water, geothermal brines and lower-grade resources that traditional evaporation methods cannot process economically.

Comparing Lithium Extraction Methods

No single method wins on every measure. The table below compares the main extraction approaches across the dimensions that matter most for investment, supply chain planning, and environmental assessment.

Direct Lithium Extraction provides a faster, more flexible alternative, particularly for complex brines that cannot be processed efficiently using conventional methods. By increasing recovery rates and shortening production timelines, it offers a practical way to strengthen future lithium supply.

Emerging Lithium Extraction Methods

As demand for lithium continues to grow, producers are exploring new resources beyond traditional hard-rock mines and salar brines.

Lithium-bearing clay deposits, particularly in Nevada and Serbia, could become an important future supply source, although most projects remain pre-commercial. Battery recycling is also expected to play a growing role as more electric vehicle batteries reach the end of their life, helping recover valuable materials and support a more circular battery supply chain.

While these resources are unlikely to replace conventional production in the near term, they will help diversify global lithium supply as extraction technologies continue to improve.

Environmental Trade-offs of Lithium Extraction

Every lithium extraction method has environmental impacts. The challenge is balancing reliable supply with responsible resource management.

Hard-rock mining has the highest environmental footprint. Mining, crushing, roasting and chemical processing require significant energy and create large-scale land disturbance, resulting in higher lifecycle carbon emissions than other lithium production methods.

Solar evaporation has a lower carbon footprint but relies on large evaporation ponds that can operate for months or years. In water-stressed regions such as South America’s Lithium Triangle, this can place additional pressure on local water resources and sensitive ecosystems.

Direct Lithium Extraction addresses many of these challenges by removing lithium directly from brine rather than relying on evaporation. Modern DLE systems can reduce land use, improve lithium recovery and allow spent brine to be reinjected underground, helping conserve water while producing more lithium from the same resource.

No extraction method is impact-free, and outcomes depend on project design, local geology and energy sources. However, continued advances in DLE are making lithium production more efficient while reducing some of the environmental trade-offs associated with conventional extraction.

Frequently Asked Questions

What are the main lithium extraction methods?

The main lithium extraction methods are hard rock mining, solar evaporation from brine, and Direct Lithium Extraction. 

DLE covers three primary technology approaches: adsorption, solvent extraction, and membrane separation. 

Geothermal brine, oilfield produced water, and battery recycling are growing secondary sources.

What are the problems with lithium extraction?

Hard rock lithium mining generates approximately 37 tonnes of CO2 per tonne of lithium on a lifecycle basis and creates significant land disturbance, and solar evaporation can consume large amounts of water in already water-stressed regions. 

DLE reduces both the water and carbon footprint significantly, but requires energy to operate, and the degree of improvement depends on facility design and energy source.

Is direct lithium extraction viable?

DLE is viable and already producing. ÐÓ°ÉPro’s Project Lonestar in Texas is processing approximately 250 metric tonnes per year of battery-grade lithium carbonate equivalent from oilfield brine. 

In June 2026, ÐÓ°ÉPro was selected by the U.S. Army as the only lithium partner in its Strategic Capital Initiatives programme. DLE recovery rates of 80 to 95% are validated at scale, with ÐÓ°ÉPro’s GET-Lit platform proven above 96%.

What are the benefits of DLE over traditional brine extraction?

DLE from brine offers recovery rates above 90%, compared to 20 to 50% for evaporation ponds. Production timelines are also measured in hours rather than months. 

The land footprint is a fraction of what ponds require, and spent brine can be reinjected rather than lost permanently. 

DLE also makes economically viable a range of brine sources, including oilfield produced water and geothermal fluids, that evaporation methods can’t process.

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• Brine, the mineral-rich saltwater found underground, holds roughly one-third of the world’s lithium.
• Traditional evaporation ponds take up to three years to produce lithium; modern DLE takes hours.
• The U.S. has significant domestic brine resources but it currently produces less than 1% of global supply.
• ÐÓ°ÉPro’s GET-Lit platform, backed by 150+ patents, covers a wide range of brine types.

Lithium extraction from brine is the process of recovering dissolved lithium from mineral-rich saltwater found in underground aquifers, salt flats, geothermal reservoirs, and oilfield formations.

Unlike hard-rock mining, which requires crushing and chemically treating solid ore, brine extraction starts with water that already has lithium dissolved in it, alongside sodium, magnesium, calcium, and dozens of other compounds. 

The engineering challenge is not finding the lithium. It is separating it from everything else efficiently and at a pace that keeps up with the world’s growing demand.

What Is Lithium Brine?

Brine, in the context of lithium production, refers to naturally occurring saline water that has accumulated in underground aquifers, volcanic basins, or geological formations over millions of years. 

As water moves through rock and sediment, it slowly dissolves minerals from the surrounding geology, including lithium salts. In tectonically active, arid regions, evaporation concentrates those dissolved minerals near the surface, building up lithium-rich brine systems that can be enormous in scale.

The result is a resource that is fundamentally different from hard-rock lithium deposits. The lithium is not locked inside a mineral that must be mined, roasted, and chemically attacked to release it. It is already in solution, which theoretically makes it faster and less disruptive to access. 

The practical challenge is that brine is a complex mixture. Lithium typically represents only a fraction of the dissolved solids present, and separating it cleanly from competing ions at commercial scale is where most of the technical and economic difficulty lies.

Where Do Lithium Brines Come From?

Three distinct geological sources drive commercial and near-commercial production, each with different lithium concentrations, geographies, and extraction requirements.

Continental (Salar) Brines

Continental brines, found beneath salt flats in arid, high-altitude basins, are the most established commercial source of lithium brine globally. 

South America’s Lithium Triangle, spanning Chile, Argentina, and Bolivia, holds the highest natural lithium concentrations of any brine resource in the world, typically ranging from 200 to more than 1,500 milligrams of lithium per litre. 

The Salar de Atacama in Chile alone accounts for more than 40% of global lithium supply, operated primarily by SQM and Albemarle. These resources have historically been extracted using large solar evaporation ponds, a method suited to the region’s exceptional evaporation rates and high lithium concentrations.

ÐÓ°ÉPro holds lithium resource interests across Chile and Argentina, where the GET-Lit platform is positioned to improve recovery rates and reduce the environmental footprint of extraction from these high-value continental brines.

Geothermal Brines

Geothermal brine is hot, mineral-rich water brought to the surface as part of geothermal energy production. These brines often contain lithium at lower concentrations than salar sources, typically 100 to 300 milligrams per litre, but they have the unique benefit of producing lithium alongside generating electricity.

This means that an existing energy asset can become a lithium supply asset with minimal incremental land use or environmental disturbance.

The Salton Sea in California is the most prominent U.S. geothermal brine resource, attracting significant attention and investment from major energy companies as domestic lithium demand rises.

Oilfield Produced Water

Perhaps the most overlooked brine source in the public conversation, oilfield produced water is brine that is brought to the surface as a byproduct of oil and gas production. 

In many formations, this water, which has historically been treated as industrial waste and disposed of at significant cost, is rich in dissolved lithium. The Smackover Formation, running across Texas and Arkansas, is one of the most lithium-rich oilfield brine resources in the United States. 

ÐÓ°ÉPro’s Project Lonestar, the company’s demonstration-scale facility in Hooks, Texas, is already processing approximately 250 metric tons per year of battery-grade lithium carbonate equivalent from Smackover brine, converting what was previously an industrial waste stream into domestic battery-grade lithium supply.

How Is Lithium Extracted from Brine?

For most of the past five decades, lithium extraction from brine has followed a remarkably similar sequence of steps. 

Lithium-rich brine is pumped from underground aquifers to the surface. It is then directed into a series of large, shallow evaporation ponds, where sunlight and wind do the slow work of evaporating the water, leaving behind a progressively more concentrated brine. 

This process typically takes between 12 and 36 months, during which other salts, including sodium chloride, potassium chloride, and magnesium compounds, precipitate out in stages as concentrations rise.

Once the brine is sufficiently concentrated, it moves into a chemical processing facility, where reagents including soda ash are used to precipitate lithium carbonate from the solution. The lithium carbonate is then filtered, dried, and further refined into battery-grade material.

The process works, and it continues to underpin a significant share of global lithium supply, but its limitations are significant: 

1. Recovery rates for traditional evaporation-pond extraction are typically in the range of 20 to 60%, meaning a substantial proportion of the lithium present in the original brine is never recovered.
2.  The land footprint of evaporation pond complexes can span hundreds of hectares. 
3. Water lost to evaporation is permanent, a serious concern in the water-stressed regions where most salar brines are found. 
4. The timeline, measured in seasons rather than hours, is increasingly incompatible with the pace at which lithium supply needs to grow.

Direct Lithium Extraction (DLE) from Brine

Direct Lithium Extraction replaces the passive, solar-driven evaporation step with active, engineered separation. 

Rather than waiting for water to evaporate and lithium to concentrate, DLE technologies selectively capture lithium ions directly from the brine, using one of several approaches, including adsorption, solvent extraction, or membrane separation.

The operational difference is significant. Where evaporation ponds require a year or more to produce a first batch of concentrated brine, DLE processes complete the same separation step in a matter of hours. 

Recovery rates above 90% are achievable with well-designed DLE systems, compared to the 20 to 60% typical of evaporation methods. Spent brine, now stripped of much of its lithium, can be reinjected back into the originating aquifer rather than lost permanently to the atmosphere.

ÐÓ°ÉPro’s GET-Lit technology platform is built around this principle and extends it considerably further. Backed by more than 150 patents, GET-Lit is not a single DLE method but a portfolio of technologies, spanning adsorption, solvent extraction, and selective membrane separation, that can be configured and combined depending on the specific chemistry of the brine being processed. 

This flexibility is what allows GET-Lit to work on virtually any brine type, from high-concentration salar brines in South America to lower-grade oilfield produced water in Texas, rather than being optimised for one resource type and ill-suited to others.

Lithium Brine Extraction Cost

Traditional solar-evaporation brine extraction carries reported operating costs of approximately of lithium carbonate equivalent (LCE), making it a comparatively low-cost production route for continental brines with suitable chemistry, water availability and arid geography. Its cost advantage is driven largely by reliance on solar energy, although it requires extensive pond infrastructure and long evaporation cycles.

Hard-rock spodumene production, by comparison, has reported operating costs of approximately of LCE, reflecting the energy- and chemical-intensive requirements of mining, crushing, concentration, thermal conversion and refining of solid ore into lithium chemicals.

DLE from brine can be competitive on an operating-cost basis, but it should not be treated as a single uniform cost category. Published estimates for individual DLE approaches range from roughly of LCE for adsorption, ion-exchange, membrane and related processes; actual project costs can be materially higher depending on lithium concentration, impurity levels, pretreatment, energy, reagents and plant scale.

For brines that are too low in lithium concentration, too high in competing ions, or in the wrong climate for evaporation ponds to be viable, DLE is not just cheaper at the margin. It is the only commercially realistic extraction route, which opens up a large class of oilfield and geothermal brine resources that were previously stranded.

The Environmental Impact of Brine Extraction

Brine extraction generally has a lower environmental impact than hard-rock mining, especially when the resource is managed with appropriate DLE methods.

  Traditional evaporation ponds can consume significant amounts of water and require large areas of land, which can affect local ecosystems if not carefully managed in water-scarce regions.

Direct Lithium Extraction offers a more efficient alternative. By separating lithium directly from the brine and reinjecting the spent brine underground, DLE can reduce water loss, minimise land use and recover more lithium from the same resource.

ÐÓ°ÉPro applies these principles through its GET-Lit platform, which is designed to improve recovery rates while supporting more responsible, closed-loop lithium production. Learn more about our sustainable approach on our sustainability page.

The United States’ Lithium Brine Resources

The United States has abundant lithium brine resources but currently produces less than 1% of the world’s lithium. As demand grows, developing domestic supply has become a strategic priority.

Key resources include Nevada’s Silver Peak, California’s Salton Sea, Utah’s Great Salt Lake basin and the Smackover Formation across Texas and Arkansas.

Many of these resources are not well suited to traditional evaporation ponds because of their chemistry, local weather or lower lithium concentrations. Direct Lithium Extraction changes that by making more domestic brines commercially viable.

ÐÓ°ÉPro is helping unlock this potential through projects including Project Lonestar in Texas and the planned Project Powder Hound in Utah.

Can Lithium Be Extracted from Seawater?

Although the world’s oceans contain vast amounts of dissolved lithium, concentrations are extremely low, around 0.17 milligrams per litre, which means that it is not economical at commercial scale.

Recovering lithium from seawater requires processing enormous volumes of water while separating lithium from much higher concentrations of other dissolved minerals.

Researchers are developing advanced membranes and electrochemical technologies that could improve extraction efficiency, many of which build on the same principles as Direct Lithium Extraction.

For the foreseeable future, naturally occurring underground brines remain the most practical and cost-effective source of lithium.

Putting Lithium Extraction Into Practice

As demand for lithium continues to accelerate, producers need extraction methods that are faster, more efficient and better suited to a wider range of resources. While evaporation ponds remain an important part of today’s supply chain, Direct Lithium Extraction is expanding what is possible by improving recovery rates, reducing production timelines and unlocking brines that were previously uneconomic to develop.

ÐÓ°ÉPro is applying these principles through its GET-Lit platform, which combines multiple DLE technologies to adapt to different brine chemistries. From Project Lonestar in Texas to Project Powder Hound in Utah, the company is demonstrating how advanced lithium extraction can support a more resilient, domestic and sustainable battery supply chain.

Frequently Asked Questions

What percentage of lithium production comes from brine?

Around one-third of the world’s lithium comes from brine, with most of the remaining supply produced from hard-rock mining in Australia. As Direct Lithium Extraction advances, brine is expected to account for a growing share of global lithium production.

Why is lithium difficult to extract from brine?

Lithium makes up only a small proportion of the minerals dissolved in brine. The challenge is separating lithium from much higher concentrations of sodium, magnesium and other ions efficiently. Direct Lithium Extraction is designed to make this process faster, more selective and more efficient.

Is lithium brine extraction profitable?

Lithium brine extraction is profitable provided the resource and technology are well matched. Traditional brine extraction is among the lowest-cost lithium production methods, while Direct Lithium Extraction can improve project economics through higher recovery rates, faster production and access to brine resources that evaporation ponds cannot process efficiently.

Does the United States have significant lithium brine resources?

The United States has major lithium brine resources, including the Smackover Formation, the Great Salt Lake basin and California’s Salton Sea. Advances in Direct Lithium Extraction are helping unlock these resources, strengthening domestic lithium production and reducing reliance on imported supply.

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Instead of waiting months or years for the sun to concentrate lithium in open-air ponds that have defined lithium production for decades, DLE separates lithium in hours using engineered processes that improve efficiency, increase recovery rates, and reduce land use.

Lithium demand is rising sharply as electric vehicles, grid-scale storage, and consumer electronics compete for a limited global supply. Traditional extraction methods were never designed for that pace.

DLE exists to close the gap between how quickly the world needs lithium and how slowly it has historically been possible to produce.

Key Takeaways:

• DLE extracts lithium directly from brine, replacing slow, land-heavy evaporation ponds.
• Recovery rates exceed 90%, far above evaporation ponds’ 40-60%.
• Costs are comparable to evaporation ponds, with lower operating costs over time.
• Proven at demonstration scale; commercial-scale projects are now ramping up.

How Direct Lithium Extraction Works

Direct Lithium Extraction separates lithium from underground brines through a series of controlled treatment stages. The process is designed to recover lithium quickly while returning the remaining brine to its original source.

First, lithium-rich brine is pumped from underground aquifers to the surface. Before extraction, the brine is filtered to remove suspended solids and other impurities that could affect performance.

The brine then enters the core extraction step. This is where lithium is selectively separated from the dozens of other dissolved minerals in the brine, such as sodium, magnesium, calcium, and boron, using one of several DLE technologies (covered in detail below). The goal at this stage is selectivity: capturing lithium while leaving the rest of the brine largely untouched.

The recovered lithium is then concentrated and purified before being converted into battery-grade lithium carbonate or lithium hydroxide.

Finally, the brineis reinjected back into the originating aquifer rather than left to evaporate in open ponds. This closed-loop approach helps reduce land use and supports more responsible water management.

ÐÓ°ÉPro’s own commercial-scale DLE plant design at its own resource projects in North and South America, including Project Powder Hound in Utah illustrates this flow in practice, combining brine pretreatment, adsorption, reverse osmosis, calcium-magnesium removal, and ion exchange for boron and remaining hardness, before the brine is returned underground.

The Main Types of DLE Technology

DLE is not a single technology. It is an umbrella term covering several distinct extraction methods, each suited to different brine chemistries and project conditions. 

Most commercial DLE operators draw on more than one of these methods, often in combination, to handle the full range of brine types encountered in the field.

Adsorption

Adsorption captures lithium using engineered solid materials that selectively attract lithium ions as brine passes through. The lithium is then released into a concentrated solution, allowing the material to be reused.

This method performs well with lower-grade brines because it can target lithium even when other dissolved minerals are present in much higher concentrations.

Solvent Extraction

Solvent extraction separates lithium by transferring it from brine into a specially formulated organic liquid solvent before recovering it as a concentrated and purified lithium stream.

Lithium ions transfer from the brine into the organic phase, which is then treated separately and recovered using an acid recovery solution.

This is one of the most established separation techniques across the broader mining and metals industry. It remains a foundational part of ÐÓ°ÉPro’s own lithium extraction technology stack, where proprietary solvent extraction reagents are used to purify and concentrate brine to lithium levels as high as 60,000 parts per million ahead of further lithium refining.

Membrane Separation

Membrane separation uses selective membranes that allow lithium ions to pass through while blocking unwanted minerals. As the brine moves through the system, lithium becomes progressively more concentrated.

ÐÓ°ÉPro’s own lithium separation membrane technology GET-Lit, originally developed in partnership with the University of Texas, is a membrane-based approach of this kind. It is designed to achieve high lithium selectivity while reducing freshwater demand for improved efficiency and sustainability.

The Benefits of DLE

Direct Lithium Extraction offers several advantages over traditional evaporation ponds. It can recover lithium more quickly, improve resource efficiency, reduce land use, and unlock new sources of lithium that were previously uneconomical to develop.

Faster Lithium Production

DLE significantly shortens production times by extracting lithium directly from brine instead of relying on months or years of solar evaporation. This faster process helps producers respond more quickly to growing global demand.

Higher Lithium Recovery

Well-designed DLE systems can recover more than 90% of the lithium contained in brine, compared with around 40 to 60% for conventional evaporation ponds. Higher recovery means more usable lithium is produced from the same resource, improving both efficiency and long-term project value.

Smaller Land Footprint

Unlike evaporation ponds, which can cover hundreds of hectares, DLE facilities carry out the extraction process within compact industrial equipment. This reduces land requirements and limits the long-term impact on the surrounding landscape.

Better Water Management

Many DLE systems reinject lithium-depleted brine back into the original underground reservoir after extraction. This closed-loop approach helps conserve water resources and reduces losses through evaporation, an important consideration in arid regions where many lithium deposits are located.

Access to More Lithium Resources

DLE can process a wider range of brines than traditional methods, including lower-grade deposits, geothermal fluids, and produced water from oil and gas operations. Expanding the range of viable resources helps strengthen long-term lithium supply while reducing reliance on conventional evaporation ponds.

Direct Lithium Extraction vs Evaporation Ponds

The clearest way to understand DLE is in direct comparison to the method it is gradually replacing.

Direct Lithium Extraction and evaporation ponds both produce lithium from brine, but they use very different approaches. DLE recovers lithium in hours using engineered processes, while evaporation ponds rely on natural evaporation over months or years.

DLE also has higher recovery rates than evaporation ponds, meaning that less lithium is wasted during the process which means it is far more efficient and productive over the same time period.

Another win for DLE is it only needs a small processing facility, significantly reducing the land needed for production compared to the large evaporation pond requirements.

The trade-off is energy and capital intensity. DLE systems require power to run pumps, pretreatment equipment, and the extraction process itself, whereas evaporation ponds rely on free solar energy. 

However, when measured across a project’s full lifecycle, the higher recovery rates, smaller land requirements, and dramatically shorter production timelines associated with DLE offset this added energy demand.

It is also worth noting that DLE can be deployed to complement existing pond infrastructure in a phased approach, before eventually displacing evaporation methods entirely as the technology matures and scales.

Direct Lithium Extraction Costs

Direct Lithium Extraction can have similar upfront costs to conventional evaporation ponds, in the range of $26,000 to $34,000 per tonne of lithium carbonate equivalent capacity, but it often delivers better long-term value through higher lithium recovery, faster production, and a smaller operating footprint.

As with any capital-intensive industrial technology, costs are expected to continue falling as DLE moves further along its commercialization curve, more facilities reach commercial scale, and competition among technology providers intensifies. 

Investors evaluating the space should expect cost figures to vary meaningfully between projects depending on brine quality, location, and the specific technology stack deployed, rather than treating any single number as a universal benchmark.

Current Limitations of DLE 

Direct Lithium Extraction offers significant advantages, butPerformance depends on the chemistry of the brine, and no single extraction technology works equally across all lithium resources.

DLE systems also may require more energy than evaporation ponds because they rely on active processing rather than natural evaporation. The operating cost for this is high, although it is typically modest relative to a project’s overall operating expenditure, and can be offset by sourcing power from renewable generation, an area where ÐÓ°ÉPro’s broader sustainability approach plays a direct role.

Finally, DLE remains a relatively young commercial industry. While the underlying science is well established and individual components of the technology have been proven at pilot and demonstration scale, the number of fully commercial-scale DLE plants currently in operation globally remains small. 

Projects moving from demonstration to full commercial scale, such as Project Black Giant in Chile, represent the next critical proving ground for the industry as a whole, and the pace at which this scale-up happens will shape how quickly DLE can meaningfully shift the broader lithium supply picture.

Putting DLE Into Practice

DLE is reshaping where and how lithium gets produced. See how ÐÓ°ÉPro, a lithium extraction company, is leading that shift, from demonstration plants to commercial scale for the future of lithium production.

Frequently Asked Questions

Is DLE more expensive than traditional mining?

While DLE can have similar upfront capital costs to evaporation pond operations, it often delivers lower long-term operating costs through faster processing, higher lithium recovery, and a smaller physical footprint.

Is DLE proven or experimental?

The science behind DLE is well established, and several technologies have progressed from laboratory research to pilot and demonstration-scale projects. Commercial deployment is expanding as more facilities prove performance at larger scales and demand for lithium continues to grow.

What is the difference between DLE and lithium refining?

Direct Lithium Extraction recovers lithium from brine. Lithium refining is the next stage, converting the extracted lithium into battery-grade products such as lithium carbonate or lithium hydroxide. Together, these processes transform raw lithium resources into materials suitable for battery manufacturing.

Is DLE more sustainable than traditional mining?

Direct Lithium Extraction has the potential to reduce the environmental impact of lithium production. Compared with evaporation ponds, it typically requires less land, recovers more lithium, and allows depleted brine to be reinjected underground rather than lost through evaporation.

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The Smackover formed approximately 150 million years ago as a carbonate reef and shallow marine system. It is characterized by its porous limestone structure. That structure makes it highly suitable for holding fluids: oil, gas, and, critically, lithium-rich brines.

The formation has been studied and produced for oil and bromine for decades. Its lithium potential was only recently quantified systematically.

Companies working in the Smackover had long noted unusual mineral concentrations in the brines co-produced with oil and gas. But the scale of the lithium resource was not calculated until recently. Geologists applied machine-learning analysis to existing brine chemistry data across the formation.

How Lithium Gets Into Brine: The Geology of the Smackover

Lithium in the Smackover Formation exists dissolved in subsurface brine. This is highly saline water held within the pore spaces and fractures of the formation’s rock matrix.

This brine accumulated over geological time as water circulated through lithium-bearing rocks. The water dissolved the lithium and became trapped as fluid within the formation.

The upper portion of the Smackover is known informally as the Reynolds oolite. It has higher porosity than the lower part and contains the most significant lithium concentrations.

The formation ranges in depth from approximately 2,000 feet (610 meters) at its northern extent in Arkansas. It reaches more than 22,000 feet (6,700 meters) further south.

The most commercially accessible lithium brines are concentrated in the shallower northern portions. These span southwestern Arkansas counties including Lafayette, Columbia, and Union.

The brine chemistry of the Smackover differs from the South American Lithium Triangle in one important respect. Smackover brines are co-produced with oil and gas operations. The drilling, pumping, and fluid handling infrastructure already exists across much of the formation footprint.

Lithium extraction from Smackover brines can leverage existing oilfield infrastructure. It does not require an entirely new development program from a greenfield starting point.

The Scale of Smackover Lithium Resources

In October 2024, the US Geological Survey published findings from a machine-learning study. The Arkansas Department of Energy and Environment collaborated on the study.

It found in its brines.

The USGS noted the upper range of this estimate. It would meet projected 2030 world demand for lithium in car batteries approximately nine times over.

Smackover brine samples from southwestern Arkansas have reached up to 616 milligrams per liter in individual exploration wells. Wells in Lafayette County, one of the most prospective areas, averaged approximately 582 milligrams per liter.

These concentrations are commercially significant. They compare favorably with brine resources being developed in South America.

The USGS study focused on southern Arkansas. It does not capture the full extent of the Smackover across other states.

Development activity is also active in Texas and other Gulf Coast states. The total lithium resource across the complete formation is likely substantially larger than the Arkansas-specific estimate.

Why the Smackover Is Central to US Domestic Lithium Strategy

The United States currently imports the majority of its refined lithium. Building a domestic lithium supply chain has been designated a national security priority. Department of Energy programs include grant funding and loan guarantees to accelerate commercial lithium production from domestic resources.

The Smackover Formation is the most significant domestic lithium resource identified to date by the USGS. It sits in the southern United States, with existing oilfield infrastructure and proximity to Gulf Coast and Southeast manufacturing corridors. Established road and rail connectivity gives it practical development advantages over more remote or environmentally constrained domestic resources.

Political and regulatory conditions in the Smackover footprint also support development. Texas and Arkansas have established oil and gas regulatory frameworks. These frameworks can accommodate brine production and lithium extraction as an extension of existing oilfield operations.

This reduces permitting uncertainty compared to entirely new extraction technologies in new regulatory contexts.

How Direct Lithium Extraction Unlocks the Smackover’s Potential

Conventional brine lithium production uses solar evaporation ponds. These work well in high-altitude Andean environments with extreme solar irradiance and minimal rainfall. The Smackover Formation in Texas and Arkansas does not offer those conditions.

Evaporation-based production in the Gulf Coast climate would be slow, land-intensive, and economically marginal.

Direct lithium extraction is the technology that makes Smackover lithium commercially viable. DLE systems extract lithium from brine through active chemical or electrochemical processes rather than passive solar evaporation.

DLE systems operate on timescales of 1 to 2 days and function in any climate. They achieve recovery rates approaching 90% compared to the 30 to 40% typical of evaporation ponds. They can also be integrated with the fluid handling systems already in place at oilfield operations.

The Smackover combines resource scale, existing oilfield infrastructure, and DLE technology. This may be the strongest near-term domestic lithium development opportunity in the United States.

Some companies hold significant acreage in the most prospective portions of the formation. Those with DLE technology validated on Smackover brine sit at the intersection of resource endowment and operational capability.

ÐÓ°ÉPro’s Project Lonestar and the Smackover Opportunity

ÐÓ°ÉPro’s primary US lithium development program, Project Lonestar, is centered on the Smackover Formation. The project covers approximately 47,500 acres (19,200 hectares) across Texas and Arkansas. This is one of the largest single-company acreage positions in the formation’s most commercially prospective portion.

ÐÓ°ÉPro received a $5 million grant from the Department of Energy. The grant supports construction of a demonstration plant in East Texas. There the company is validating and scaling its GET-Lit direct lithium extraction platform on Smackover brine.

Phase 1 of Project Lonestar targets 12,500 tonnes per annum of battery-grade lithium production by 2028. Later phases scale to a full commercial target of 50,000 tonnes per annum.

Lithium samples produced from ÐÓ°ÉPro’s Austin pilot plant have been qualified by cathode customers. This confirms that the production process delivers material meeting commercial battery manufacturing standards.

The project’s acreage position includes 330 acres of cleared land secured near the planned refinery site. The site has a dedicated rail line for product transport.

Why Investors and Energy Companies Are Paying Attention

The Smackover Formation has attracted attention from investors and energy sector participants for reasons that go beyond resource scale alone.

Geographic and policy positioning is the first factor. Lithium produced from US domestic brine in Texas and Arkansas qualifies for IRA critical minerals provisions. These provisions require increasing shares of battery materials to come from domestic or allied-nation suppliers.

Manufacturers seeking to maintain eligibility for EV and battery production tax credits have a structural incentive. That incentive is to source from domestic lithium projects.

Infrastructure leverage is the second factor. ÐÓ°ÉPro can extract lithium from brine co-produced in existing oilfield operations, using established fluid handling systems. This reduces capital requirements and permitting timelines compared to developing a new resource from scratch in a remote location.

Community and economic impact is the third factor. Project Lonestar is projected to generate billions of dollars in regional economic impact. It is also projected to generate more than 3,000 direct, indirect, and construction jobs.

ÐÓ°ÉPro is also investing about $20 million in its East Texas demonstration plant. These commitments support community relations and regulatory processes in the region.

ÐÓ°ÉPro is conducting a securities offering under Regulation A of the Securities Act of 1933.

Investors and energy industry partners interested in ÐÓ°ÉPro’s Smackover position can find offering details at .

Frequently Asked Questions

What is the Smackover Formation? 

The Smackover Formation is a Jurassic-age geological unit. It extends across the Gulf Coast region of the United States, including Texas, Arkansas, Louisiana, Alabama, Mississippi, and Florida. Characterized by porous limestone, it holds oil, gas, and lithium-rich brines, and has produced oil and bromine for decades.

How much lithium is in the Smackover Formation? 

The USGS estimated between 5.1 and 19 million metric tons of lithium in southern Arkansas Smackover brines alone. At the upper range, that would meet projected 2030 global demand for EV battery lithium approximately nine times over. The full formation including Texas and other states is likely larger.

Why is the Smackover significant for US energy independence? 

The Smackover is the largest domestic lithium resource identified by the USGS to date. It sits within existing oilfield infrastructure in the southern United States, with established road, rail, and processing connectivity. This gives it practical development advantages, and developing it is central to reducing US dependence on imported lithium.

Why is direct lithium extraction necessary for the Smackover? 

Conventional evaporation pond lithium production requires extreme solar radiation and low humidity. The Gulf Coast climate does not provide those conditions. DLE systems use active innovative processes to extract lithium from brine in 1 to 2 days, regardless of climate.

What is ÐÓ°ÉPro’s Smackover position? 

Project Lonestar covers approximately 47,500 acres of the Smackover Formation in Texas and Arkansas. ÐÓ°ÉPro operates an East Texas demonstration plant, supported by a $5 million DOE grant, validating GET-Lit on Smackover brine. Phase 1 targets 12,500 tonnes per annum of battery-grade lithium production by 2028.

Are other companies working in the Smackover Formation? 

Yes. The scale of the resource identified by the USGS has attracted some of the largest names in energy. ExxonMobil holds more than 300,000 net acres in the Arkansas Smackover and has already produced battery-grade lithium at pilot scale, while Chevron acquired roughly 125,000 acres across Northeast Texas and Southwest Arkansas in 2025. Both majors see the formation as the foundation of a domestic lithium supply chain as oil and gas companies expand into critical minerals.

ÐÓ°ÉPro’s Project Lonestar sits in the same play, neighboring these positions, with approximately 47,500 acres and an active DOE-funded demonstration plant. 

That combination of acreage, federal backing, and operating demonstration infrastructure makes it among the most advanced programs currently targeting the formation.

Sources

USGS Smackover Arkansas lithium estimate (5.1 to 19 million metric tons, nine times 2030 demand): .

USGS Smackover resource fact sheet and brine concentration data: .

ÐÓ°ÉPro Project Lonestar acreage, DOE grant, and economic projections: ÐÓ°ÉPro and .

ÐÓ°ÉPro securities offering: .

This article is for informational purposes only and does not constitute investment advice. The ÐÓ°ÉPro securities offering is made only by the official offering circular available at invest.energyx.com. Investing in early-stage companies involves significant risk including potential loss of the entire investment. Please read all risk disclosures carefully before investing.

The post The Smackover Formation: America’s Most Strategic Lithium Resource appeared first on ÐÓ°ÉPro: Lithium Extraction ÐÓ°ÉPro.

For the first time, battery-grade lithium hydroxide was being produced on US soil at industrial scale. That is significant.

But understanding what the Tesla lithium refinery actually does, and what it does not do, reveals just how much remains to be built to close the domestic lithium gap.

What Is Tesla’s Lithium Refinery Project

Tesla’s lithium refinery is located in Robstown, Texas, near Corpus Christi. Construction began in May 2023, and the facility became operational in January 2026 after approximately three years of development.

It is the first spodumene-to-lithium-hydroxide refinery in North America and the first industrial deployment of an acid-free lithium refining process at commercial scale.

The facility processes spodumene, a hard rock mineral that is the primary raw material in conventional lithium production. Tesla’s process converts spodumene concentrate into battery-grade lithium hydroxide, currently targeting 30 gigawatt-hours during early ramp and scaling toward 50 gigawatt-hours at volume production.

The acid-free method produces sand and limestone as byproducts rather than the sodium sulfate waste common in traditional acid-roasting operations, a meaningful process improvement. The facility is currently in early production ramp, and it represents a substantial capital commitment by Tesla to vertical integration of its battery supply chain.

The raw material is where Tesla and ÐÓ°ÉPro diverge. Tesla’s refinery runs on spodumene, a hard rock lithium ore that must be mined, crushed, and shipped before refining.

ÐÓ°ÉPro starts from brine, the lithium-rich saltwater held in formations like the Smackover, and extracts lithium directly. Hard rock and brine demand different processing, different supply chains, and different economics. That choice defines how fast, how cleanly, and how close to home each company can produce lithium.

Why the United States Lacks Domestic Lithium Refining Capacity

Until Robstown came online, the United States had no meaningful capacity to refine lithium into battery-grade material at industrial scale.

Most lithium refining has historically been concentrated in China, which built processing infrastructure over decades while the US imported refined lithium compounds rather than developing domestic processing.

This is not primarily a resource problem. The United States holds significant lithium reserves in brine deposits, geothermal resources, and hard rock formations.

The challenge has been converting those resources into the refining and production infrastructure needed to make domestic lithium commercially viable. Tesla’s refinery addresses one part of that gap by establishing a refining operation on American soil, but it represents only one link in a much longer chain.

The Gap Between US Lithium Demand and Domestic Production

A refinery, however capable, is only one component of a complete supply chain. The critical question is where the raw material comes from.

Tesla’s Robstown facility processes imported spodumene concentrate, sourced from hard rock mining operations overseas, including Australia. The facility is a domestic refining operation dependent on foreign feedstock.

According to the, the United States accounts for a minimal share of global lithium production relative to its consumption, with the vast majority of lithium used in American battery manufacturing still originating overseas. Building genuine supply chain independence requires not just refining capacity but domestic production of the raw lithium resources that feed those refineries.

This distinction carries real weight for national security and industrial policy. A refinery without a domestic feedstock source remains exposed to the same geopolitical and logistical risks that have defined US critical minerals dependency for decades.

The goal of domestic lithium independence requires solving both sides of the equation simultaneously.

Which Companies Are Working to Close the US Lithium Gap

Tesla’s refinery has focused attention on how much domestic lithium production infrastructure still needs to be developed upstream. A growing number of companies are working on US-based lithium resources that could supply refineries like the one in Robstown.

Most of this activity is focused on brine-based lithium resources rather than hard rock mining. The Smackover geological formation, running through Texas and Arkansas, contains lithium-rich brines that represent one of the most strategically important domestic lithium opportunities in the country. The Salton Sea geothermal region in California is another active development area.

The technology used to extract lithium from brine matters as much as geography. Direct lithium extraction, or DLE, has become the preferred approach for brine-based production.

Unlike conventional evaporation pond methods that take 12 to 18 months and recover roughly 50% of available lithium, DLE systems operate continuously, achieve recovery rates approaching 90%, and require significantly less water and land.

That combination of efficiency and speed makes DLE-based projects the most credible near-term candidates for meaningful domestic lithium production.

How ÐÓ°ÉPro’s Project Lonestar Fits Into the Domestic Supply Chain

ÐÓ°ÉPro’s Project Lonestar is one of the most advanced domestic lithium development projects targeting the Smackover formation.

The project covers approximately 47,500 acres (19,200 hectares) across Texas and Arkansas and targets 50,000 tonnes per annum of battery-grade lithium production at full commercial scale, with a Phase 1 target of 12,500 tonnes per annum by 2028.

ÐÓ°ÉPro received a $5 million grant from the Department of Energy to support construction of its work in the US, which includes its demonstration plant in East Texas, where the company is validating its GET-Lit direct lithium extraction platform on Smackover brine.

The project is designed to produce both lithium hydroxide and lithium carbonate at 99.9% battery-grade purity, positioning it as a potential upstream supplier for the refining and battery manufacturing infrastructure now being built across the United States.

Where Tesla’s refinery requires imported spodumene as its input, Project Lonestar is designed to produce battery-ready lithium from a domestic brine resource in an integrated process.

That makes it a different kind of contribution to the domestic lithium supply chain: not refining capacity, but the domestic feedstock that refining capacity needs.

What This Means for Investors Watching the US Lithium Market

Tesla’s refinery demonstrates that large-scale lithium refining is operationally viable in the United States. It also makes clear that the upstream side of the supply chain, the domestic production of lithium from American resources, remains largely undeveloped. That is where investor attention is increasingly focused.

Federal policy through the Inflation Reduction Act and Department of Energy grant programs has created financial incentives for domestic lithium production at every stage of the supply chain.

Companies with the technology and resource base to produce battery-grade lithium from domestic sources are positioned in one of the most strategically significant areas of the energy transition.

As a private company, ÐÓ°ÉPro is currently conducting a securities offering under Regulation A of the Securities Act of 1933, giving investors the opportunity to participate in the company’s development of domestic lithium production infrastructure. Full details of the offering, including risk factors, are available at.

Frequently Asked Questions

What is Tesla’s lithium refinery in Texas?

Located in Robstown, Texas, near Corpus Christi, it became operational in January 2026 as the first spodumene-to-lithium-hydroxide refinery in North America.

The facility uses an acid-free process to convert imported spodumene concentrate into battery-grade lithium hydroxide, currently targeting 30 gigawatt-hours per year during early ramp and scaling toward 50 gigawatt-hours at volume production.

Does Tesla’s refinery use domestically sourced lithium?

No. The Robstown facility processes spodumene concentrate sourced from hard rock mining operations overseas, including Australia, so it creates domestic refining capacity while still relying on imported raw material, a key limitation for a fully independent US lithium supply chain.

What is the difference between a lithium refinery and a lithium production project?

A lithium production project extracts raw lithium from the ground, either from hard rock ore or brine deposits, while a refinery processes those raw resources into battery-grade compounds such as lithium hydroxide or lithium carbonate. A complete domestic supply chain requires both working in sequence.

What is direct lithium extraction and why does it matter for domestic production?

Direct lithium extraction recovers lithium directly from brine sources such as underground saltwater formations, achieving recovery rates approaching 90% versus roughly 50% for conventional evaporation ponds, operating faster, and using significantly less water and land. For the US, where most accessible lithium resources are brine-based, DLE is the key technology enabling domestic lithium production at scale.

How does ÐÓ°ÉPro’s Project Lonestar relate to the US lithium supply chain?

Project Lonestar is ÐÓ°ÉPro’s domestic lithium development project in the Smackover formation across Texas and Arkansas. It is designed to produce battery-grade lithium hydroxide and lithium carbonate from domestic brine using direct lithium extraction technology, targeting 50,000 tonnes per annum of production at commercial scale.

Can individual investors participate in the domestic lithium opportunity through ÐÓ°ÉPro?

ÐÓ°ÉPro is conducting a securities offering under Regulation A of the Securities Act of 1933, with full risk disclosures available at invest.energyx.com. This is not investment advice, and investing in early-stage companies carries significant risk, including the potential loss of the entire amount invested.

When our Reg A round closes on July 16th 2026, investors won’t be able to invest after that time. Until of course a new round opens which there is currently no confirmed date. 

Sources

Tesla lithium refinery capacity and operations: and .

Tesla spodumene supply agreements: .

US lithium reserves and production data: .

Tesla acid-free refining process and byproducts: .

China’s share of global lithium refining: .

Direct lithium extraction vs evaporation pond recovery and timelines: and .

ÐÓ°ÉPro Project Lonestar production targets and acreage: ÐÓ°ÉPro and .

ÐÓ°ÉPro $5 million Department of Energy grant: .

This content is for informational purposes only and does not constitute investment advice or an offer to sell securities. Investing in early-stage companies involves significant risk, including potential loss of principal. The ÐÓ°ÉPro securities offering is made only by the official offering circular available at invest.energyx.com. Please read all risk disclosures carefully before investing.

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There, ancient geology and extreme aridity have concentrated lithium in vast underground brine deposits. These deposits sit in porous rock beneath salt flats known locally as salars. They represent the world’s largest known concentration of lithium resources.

The term triangle refers to the rough geographic shape the three countries form on a map.

At its center are salt flats ranging from a few hundred to several thousand square kilometers. They sit at elevations of 3,500 to 5,000 meters above sea level.

High-altitude evaporation rates and low annual rainfall made these regions ideal for conventional brine lithium production. That method relies on solar evaporation to concentrate lithium over time.

The Scale of South America’s Lithium Resources

The scale of lithium resources in this region is difficult to overstate in terms of global significance. 

According to the , these countries hold over half of identified global lithium resources.

Bolivia holds the largest lithium resource of any country globally, estimated at approximately 21 to 23 million metric tons. It is concentrated primarily in the Salar de Uyuni. That is the world’s largest salt flat at approximately 11,000 square kilometers.

Argentina holds approximately 22 to 23 million metric tons. These span multiple salt flat deposits in its northwestern provinces of Jujuy, Salta, and Catamarca.

Chile holds approximately 9.3 to 11 million metric tons. It is concentrated primarily in the Salar de Atacama in the Antofagasta region.

Bolivia and Argentina hold the largest resources by volume. Yet Chile is currently the dominant producer, with output of approximately 49,000 tonnes in 2024.

Argentina produced approximately 18,000 tonnes in the same period. Bolivia’s commercial production remains in the hundreds of tonnes despite holding the world’s largest lithium reserve base.

Chile, Argentina, and Bolivia: How Each Country Approaches Lithium Development

The three Lithium Triangle countries have comparable geological endowments. Yet they have taken distinct approaches to lithium development. These reflect different economic policies, political conditions, and regulatory frameworks.

Chile is the most established producer and the second-largest lithium exporter globally. Production is concentrated in the Salar de Atacama, where SQM and Albemarle operate under government concessions.

The Chilean government has moved toward increased state participation. Future lithium concessions must include a majority stake for state mining company Codelco.

Foreign investors can participate within this structured partnership framework. But the terms have become more complex than in previous decades.

Argentina operates a more decentralized model. Significant regulatory authority sits at the provincial level rather than nationally.

This has allowed more projects to advance at different speeds across provinces. Jujuy, Salta, and Catamarca have each developed their own investment frameworks.

Argentina had more than 80 active lithium projects at various stages as of 2024. That made it the most active lithium development frontier in the region.

Bolivia holds the world’s largest lithium resource but has produced commercially at minimal scale. This reflects its explicitly state-led development model and the technical challenges of developing the Salar de Uyuni.

Uyuni brine has a more complex chemistry than the Atacama or Argentine salars. It has higher magnesium content relative to lithium.

Bolivia has pursued direct lithium extraction technology agreements with Chinese investors. These address this technical challenge while retaining majority state control over operations.

Why the Lithium Triangle Is Central to the Global Battery Supply Chain

The battery supply chain serves electric vehicles, grid storage, and consumer electronics. It depends on battery-grade lithium carbonate and lithium hydroxide produced from primary lithium resources.

The Lithium Triangle is the world’s largest concentration of brine-based lithium. It supplies a substantial share of the lithium entering the global battery supply chain.

Chile and Argentina together accounted for approximately 97% of US lithium imports between 2020 and 2023, according to USGS data.

For the United States, building domestic lithium supply capacity is a national security priority. The Lithium Triangle is both the current primary source of imported lithium and the benchmark for domestic alternatives.

Domestic projects aim to close that gap. ÐÓ°ÉPro’s Project Powder Hound in Utah targets large-scale US lithium production from Great Salt Lake brine.

Direct lithium extraction technology is beginning to change the production parameters across the region.

DLE systems extract lithium in 1 to 2 days without relying on solar evaporation. This enables faster production, higher lithium recovery, and a significantly smaller water and land footprint.

Companies applying DLE technology in the Lithium Triangle can develop resources that conventional evaporation ponds would leave unviable.

Environmental and Geopolitical Considerations for Investors

Investors and supply chain partners should understand the risks of Lithium Triangle exposure. These risks differ from those in mining projects in more conventional jurisdictions.

Resource nationalism has increased across all three countries. Bolivia’s state-led model limits foreign ownership and control, with ongoing political tension around investment terms.

Chile’s shift toward mandatory Codelco partnerships introduces new commercial complexity. Argentina’s decentralized framework creates variability between provincial jurisdictions.

Environmental considerations are increasingly material to permitting and community relations.

Conventional evaporation pond production consumes freshwater in regions where it is scarce. That water is shared with indigenous communities and agricultural users.

Projects in areas with significant indigenous populations face growing requirements for prior consultation and community benefit arrangements.

DLE technology has a lower water footprint and reduced surface disruption. This offers a more defensible environmental profile in permitting processes.

The Lithium Triangle sits within broader competition among the United States, China, and the European Union. That competition is over supply chain positioning in critical minerals.

Chinese capital has entered all three countries in various forms. Meanwhile, US policy through the IRA and EXIM Bank steers capital toward projects meeting domestic or allied-nation requirements.

ÐÓ°ÉPro’s Operations in the Lithium Triangle: Project Black Giant

ÐÓ°ÉPro has a direct operational presence in the Lithium Triangle through Project Black Giant. This Chilean lithium development project is located near Salar de Punta Negra in the Antofagasta region.

The project covers approximately 100,000 acres. It holds an estimated 4.5 to 9.8 million metric tons of lithium in situ.

A Pre-Feasibility Study was completed in September 2025. Goldman Sachs was engaged as financial advisor. The US Export-Import Bank issued a letter of interest representing $690 million in project finance support.

ÐÓ°ÉPro’s GET-Lit direct lithium extraction platform is the planned production method for the project. It targets battery-grade lithium production with a smaller environmental footprint than conventional evaporation ponds at the same site.

Full project detail is available on the Project Black Giant page.

What International Investors and Partners Need to Know

Investors and industrial partners are evaluating exposure to Lithium Triangle resources. The key considerations are resource quality, jurisdiction risk, technology approach, and production timeline.

Resource quality varies significantly by project and location.

Brine chemistry, lithium concentration, the magnesium-to-lithium ratio, and geological depth all affect production cost and technical complexity.

Projects in the Salar de Atacama consistently show high lithium concentration and favorable ion ratios.

Other salars, including Uyuni, require more technically demanding processing regardless of their total resource scale.

Jurisdiction selection matters as much as resource quality. Chile, Argentina, and Bolivia each present different risk profiles on resource nationalism, permitting timelines, and infrastructure availability.

Projects in Argentina may advance more quickly under more flexible provincial frameworks. Chilean and Bolivian projects require navigation of increasing state participation requirements.

Technology selection is a growing differentiator across the region.

Direct lithium extraction offers environmental and operational advantages. These are becoming relevant to permitting, community relations, and production economics.

Projects designed around DLE from the outset are better positioned as environmental standards tighten across all three jurisdictions.

ÐÓ°ÉPro is currently conducting a securities offering under Regulation A of the Securities Act of 1933. Investors interested in ÐÓ°ÉPro’s Lithium Triangle operations and broader lithium portfolio can access offering details at .

Frequently Asked Questions

What is the Lithium Triangle?

The Lithium Triangle is the high-altitude Andean region spanning Argentina, Bolivia, and Chile. Its underground brine deposits in salt flat formations hold the world’s largest concentration of known lithium resources. Together the three countries hold more than half of global identified lithium resources.

Which country in the Lithium Triangle produces the most lithium?

Chile is the dominant producer, with approximately 49,000 tonnes produced in 2024. Argentina produced approximately 18,000 tonnes in the same period. Bolivia holds the world’s largest lithium resource by volume but produces at minimal commercial scale.

Why is Chile the dominant producer despite not having the largest reserves?

Chile’s Salar de Atacama has favorable brine chemistry. Its high lithium concentration and low magnesium-to-lithium ratio make extraction relatively straightforward and cost-competitive. Chile also has established mining infrastructure, a longer production track record, and proximity to Pacific shipping routes.

What are the main risks of investing in Lithium Triangle projects?

Key risks include resource nationalism and regulatory change in all three countries. Others are permitting and environmental challenges, plus water use concerns in arid regions shared with indigenous communities. Infrastructure limitations and geopolitical competition among major powers for critical mineral supply chains add further risk.

How does direct lithium extraction change the Lithium Triangle opportunity?

DLE systems extract lithium in 1 to 2 days without solar evaporation. They use less water and a smaller land footprint than evaporation ponds. This makes DLE viable where conventional production would be constrained, and strengthens permitting in jurisdictions with rising environmental scrutiny.

What is ÐÓ°ÉPro’s presence in the Lithium Triangle?

ÐÓ°ÉPro operates Project Black Giant near Salar de Punta Negra in Chile, covering about 100,000 acres. In situ lithium is estimated at 4.5 to 9.8 million metric tons, per a 2025 Pre-Feasibility Study. Goldman Sachs and the US Export-Import Bank back it; see energyx.com/projects/project-black-giant/.

Sources

Lithium Triangle resources, country reserves, and 2024 production: .

Chile and Argentina share of US lithium imports: .

Lithium Triangle holding over half of global resources: .

ÐÓ°ÉPro Project Black Giant (PFS, Goldman Sachs, EXIM): ÐÓ°ÉPro.

ÐÓ°ÉPro Project Powder Hound: ÐÓ°ÉPro.

ÐÓ°ÉPro securities offering: .

This article is for informational purposes only and does not constitute investment advice. Any reference to ÐÓ°ÉPro’s securities offering is for informational context only. The ÐÓ°ÉPro offering is made only by the official offering circular available at invest.energyx.com. Investing in early-stage companies involves significant risk including potential loss of the entire investment. Please read all risk disclosures carefully before investing.

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In battery innovation, many of the biggest breakthroughs have come not from new engineering tricks, but from the discovery and development of better materials. LiFePO4, for example, defied the prevailing understanding of lithium insertion mechanisms at the time of its discovery, yet went on to reshape the industry. More recently, lithium metal anodes have offered the promise of much higher energy density, but their reactivity and instability have forced innovation in other parts of the cell, particularly electrolytes, to enable their safe use. In this way, the cathodes, anodes, electrolytes, binders, and separators inside every battery ultimately determine its performance, cost, and safety.

Historically, discovering new materials has been slow, expensive, and often dependent on chance. The hope with machine learning and AI is that we can turn what has traditionally been an uncertain, trial-and-error process into something faster, more predictive, and more systematic. However, as with many AI applications in energy, there is real progress but critical challenges remain.

What’s Working

Where AI has shown the most traction so far is in predicting material properties and narrowing the universe of possible candidates.

Machine learning models trained on both quantum chemistry calculations and experimental datasets are now able to predict things like ionic conductivity, voltage windows, solubility, and diffusion barriers with far greater speed than traditional simulations.

This makes it possible to screen large libraries of cathode, anode, or electrolyte candidates and down-select before they ever reach the lab bench. Companies like are pushing this further, building AI-driven pipelines that merge molecular simulations with machine learning to design better electrolytes and electrode additives. Their independent work and work with industry partners has already delivered promising candidates.

On top of that, open databases such as the Materials Project and the Open Catalyst Project are providing high-quality, accessible data that researchers and startups can use as a foundation.

What’s Missing

Still, there are some critical gaps that keep AI in materials discovery from being transformative today.

Models are only as good as the data they’re trained on, and most of that data comes from narrow or biased sources, making it difficult to generalize across different chemistries. A material that looks excellent in silico may turn out to be impossible to synthesize at scale, prohibitively expensive, or unstable under real-world conditions.

Most AI models also operate in isolation, ignoring the messy practical variables of manufacturing processes, cost targets, or raw material availability. And while the idea of closed-loop integration, where predictions feed directly into automated synthesis and characterization, which then refine the models, has been demonstrated, it’s still far from standard practice.

On top of that, much of the most valuable data sits behind corporate walls, meaning that models are limited to whatever slice of the materials universe their developers have access to. This lack of collaboration is hard to overcome, since questions about IP ownership, if datasets were opened and a materials breakthrough followed, often derail discussions before meaningful collaboration can even begin.

Lastly, AI has yet to demonstrate the ability to uncover entirely new phenomena. So far, it excels at optimizing what we already understand and at screening known materials for specific qualities. It’s a reminder that true breakthroughs like the discovery of LiFePO4, which would not have emerged from models trained only on data existing prior to LFP’s discovery, often come from insights that defy prevailing assumptions.

What’s Next

Looking ahead, the real breakthrough will come when AI is embedded in a more complete ecosystem.

Self-driving labs that combine AI predictions with automated synthesis and testing will enable faster learning cycles. Labs at places like , , , and startups such as , , and are actively pursuing this integration. Multi-modal data, spectra, microscopy, synthesis protocols, even text from the literature, will make predictions more robust.

Tools that can prioritize not just theoretical performance but also manufacturability, cost, and supply chain resilience will help bridge the gap between discovery and commercialization. And collaborative frameworks that encourage data sharing, at least in pre-competitive spaces, could unlock faster industry-wide progress.

Finally, success will depend on building teams that fuse expertise, materials scientists who understand informatics, and data scientists who understand electrochemistry.

AI won’t replace the chemist at the bench or the engineer in the pilot line. But if we get this right, it can amplify their efforts, reduce wasted cycles, and point us toward better candidates sooner. In that sense, the next generation of battery breakthroughs may not depend on luck in the lab as much as learning at scale.

By: Dr. Nicholas Grundish

The post Exploring AI across the Battery Supply Chain Part 3: Materials Discovery appeared first on ÐÓ°ÉPro: Lithium Extraction ÐÓ°ÉPro.

Mining gets most of the attention, but it’s what happens after you pull material from the ground that really determines whether it becomes something useful. Raw material processing is where chemistry, variability, and scale collide. It is where things can get very complicated very quickly.

Unlike mining, which plays out over decades and miles, processing happens in real time. Inputs shift by the hour, impurities creep up, equipment degrades, and small deviations in process control can ripple across a system and destroy yield, quality, or both.

That’s what makes this stage such an interesting target for AI. In theory, smarter tools could help stabilize processes, keep impurities in check, and guide flowsheet decisions based on shifting feedstock profiles. However, the reality is messier. Much of the relevant data doesn’t exist, or isn’t reliable, and the physical systems we’re working with weren’t built to accommodate algorithmic feedback loops.

This post looks at where AI is starting to make an impact, and where it still struggles, in the messy middle between resource and battery-grade material output.

What’s Working

AI is beginning to find real traction in areas where there’s sufficient data, real-time feedback, and a clear cost-benefit. In raw material processing, that typically means targeting yield, quality, and uptime.

1. Yield Maximization AI models can continuously adjust process parameters like temperature, residence time, and reagent dosing to push recovery rates higher without overstepping quality limits. Especially in multi-step processes like solvent extraction or crystallization, even small yield gains can have outsized economic value. These types of strategies are already being deployed in metals and chemical processing by companies like FLSmidth and Honeywell, and are beginning to be explored in lithium refining.

2. Real-Time Quality Control With sensors tracking lithium concentration, impurity levels (like magnesium or calcium), and physical properties, ML tools can detect deviations before they snowball. Combined with feedback loops, this lets operators keep output within spec and avoid costly reprocessing or process down time. Analogous systems are already used in flotation and comminution circuits with platforms like MineSense and FrothSense.

3. Process Flow Optimization This is less about real-time tweaks and more about designing the right flowsheet for a given feedstock. AI can help navigate tradeoffs in selectivity, reagent compatibility, and downstream integration, especially for complex brines or unconventional clay deposits. While still early, this area is attracting serious interest for decision support during piloting and scale-up.

4. Predictive Maintenance Chemical refinement can be especially aggressive on processing equipment. AI-powered maintenance models can spot early signs of trouble and reduce unplanned downtime, which is especially valuable in continuous or high-throughput systems. Tools developed in adjacent industries by firms like AspenTech, GE Digital, and ABB are beginning to influence thinking in the lithium space.

None of these applications are futuristic. They’re already being tested or deployed in pockets across the industry. However, they require a solid digital foundation, one that many plants still lack and may take time to employ.

What’s Missing

For all the promise, there are still big gaps when it comes to making AI broadly useful across the diverse and variable world of raw material processing.

1. Data Scarcity and Fragmentation It’s not just that data is limited. The data that does exist is fragmented across companies and formats. Each company guards its own historical process data, either to protect IP or to avoid training models that could benefit competitors. As a result, AI efforts are typically confined to narrow, proprietary datasets. That makes it much harder to build robust models or apply insights across different sites and systems.

2. Feedstock Variability No two brines, rocks, or clays are alike. This variability makes it hard to generalize models across sites. What works well for one feedstock can completely break down on another, especially in processes like DLE, where ion ratios, temperature, and fouling behavior can shift dramatically from one type of brine to another. It may turn out that each resource will require its own tailored model.

3. Black-Box Models and Lack of Domain Context Many AI tools are still black boxes. They might fit the data, but they don’t necessarily reflect chemical reality. This shortcoming makes operators hesitant to trust their outputs when a bad recommendation can damage equipment or send off-spec product downstream.

4. Missing Materials Data for AI-Driven Discovery Unlike cathode development or drug discovery, the field of extraction materials, adsorbents, solvents, membranes, isn’t backed by large, open datasets or supported by data from an academic community. This makes it hard to apply AI to design new materials for selective lithium (or any critical mineral) recovery or impurity rejection. Without high-quality, diverse data on how these materials behave across real-world conditions, model-driven discovery is mostly stuck at the starting line.

These gaps don’t mean AI has no place in processing. They just mean we need better data infrastructure, more collaborative experimentation, and more hybrid models that combine first-principles chemistry with machine learning.

What’s Next

The next wave of impact won’t come from retrofitting AI into broken systems, it will come from building smarter systems from the start. That means flowsheets designed with sensing, feedback, and optionality in mind. It also means investing in the boring stuff, such as data pipelines, rigorous calibration protocols, and human-in-the-loop engineering.

We’ll likely see:

• Hybrid models that combine physics-based logic with ML prediction
• AI-assisted flowsheet design tools during pilot development
• Digital twins that simulate process behavior under changing conditions
• AI-guided maintenance planning embedded into plant control systems

The most transformative potential may come from collaboration. Across the sector, we need better coordination between resource owners, operators, researchers, and technology developers to build shared datasets and open benchmarks. Without that, even the best models will remain stuck in the lab.

At ÐÓ°ÉPro, we’ve built a platform that spans multiple extraction technologies, from membranes to sorbents to solvent-based systems, not because it’s convenient, but because it was necessary. Brines vary and requirements change. A single-technology will only get you so far. That diversity of tools gives us the flexibility to adapt and unlock new opportunities in the future. That same versatility puts us in a strong position to benefit from AI, both in accelerating our technology development and in moving faster toward commercialization.

If you’re working at the intersection of AI, process design, or materials science (especially in the lithium space), and want to explore what’s next together, we’d love to connect.

Progress in this space won’t come from any one company or breakthrough. It will take shared data, shared learning, and open-minded collaboration. Let’s build toward that future.

By: Dr. Nicholas Grundish

The post Exploring AI across the Battery Supply Chain Part 2: Raw Material Processing appeared first on ÐÓ°ÉPro: Lithium Extraction ÐÓ°ÉPro.

According to , studies by Chile’s state mining company ENAMI revealed that the La Isla salt flat contains 2.13 million metric tons of lithium—a 150% increase from prior estimates—while the Aguilar salt flat holds nearly 1 million metric tons, up 40%. Together, these findings add 3.05 million tons to Chile’s known lithium resources, previously estimated at 11 million tons by the U.S. Geological Survey (USGS). 

This significant increase positions Chile to play an even more pivotal role in the global lithium market, especially as the demand for electric vehicles (EVs) and renewable energy storage solutions continues to surge.​

The Challenge with Traditional Lithium Extraction

Traditional lithium extraction methods, such as evaporation ponds, are time-consuming, environmentally taxing, and often yield low recovery rates. As Chile looks to capitalize on its newfound resources, there’s a pressing need for more efficient and sustainable extraction technologies.​

ÐÓ°ÉPro’s Solution: LiTAS® Technology

ÐÓ°ÉPro has developed a suite of Direct Lithium Extraction (DLE) technologies under its LiTAS® platform. This innovative approach combines proprietary membranes, solvents, and adsorbents to enhance lithium recovery from brine sources. Key advantages of the LiTAS®  system include:​ 

• High Recovery Rates: Achieving approximately 90% lithium recovery. 
• Rapid Processing: Reducing extraction time from months to just 1-2 days. 
• Minimal Environmental Impact: Requiring significantly less fresh water and energy compared to traditional methods. 
• Cost Efficiency: Lowering both capital and operational expenditures.​ 

Project Black Giant: Our Commitment to Chile

In 2023, ÐÓ°ÉPro took a significant step by acquiring approximately 100,000 acres of lithium-rich concessions in Chile’s Antofagasta region, launching Project Black Giant. This project aims to develop one of the world’s first commercial DLE facilities, with plans to produce 40,000 metric tons of lithium per year. Surface samples from the site indicate lithium concentrations exceeding 400 mg/L, highlighting the area’s potential.

Project Black Giant aligns with Chile’s vision for sustainable and inclusive mining practices. By integrating advanced DLE technologies, we aim to ensure that lithium extraction processes are both efficient and respectful of local ecosystems and communities.​

Conclusion

The discovery of increased lithium reserves in Chile presents a unique opportunity to redefine extraction practices. By embracing cutting-edge technologies like ÐÓ°ÉPro’s LiTAS® and initiatives like Project Black Giant, Chile can position itself as a leader in sustainable lithium production, meeting global demand while upholding environmental and social responsibilities.

The post Chile’s Lithium Windfall: Why ÐÓ°ÉPro Is Ready to Lead the Charge​ appeared first on ÐÓ°ÉPro: Lithium Extraction ÐÓ°ÉPro.

Global Developments Impacting Lithium Supply

Several recent events have significantly influenced the lithium market:

• Geopolitical Tensions: The concerning the Manono lithium deposit in the Democratic Republic of Congo (DRC) risks escalating tensions with China, which currently has major mining operations in the region.

• Industry Challenges: Northvolt, a Swedish car battery start-up, , highlighting the difficulties new entrants face in the battery production sector.

• China’s Strategic Moves: China has and technologies, implementing export controls on battery technologies and restricting the movement of engineers and equipment. These measures aim to retain advanced technologies within China and maintain its dominant position in global supply chains.

ÐÓ°ÉPro’s Innovative Approach to Lithium Extraction

Amid these challenges, ÐÓ°ÉPro has emerged as a pioneer in lithium extraction and battery technology:

• Direct Lithium Extraction (DLE) Technology: ÐÓ°ÉPro’s proprietary LiTAS method utilizes selective membranes to efficiently separate lithium from brine solutions, offering a more sustainable alternative to traditional evaporation ponds. This technology reduces environmental impact and increases extraction efficiency.

• Global Operations: Headquartered in San Juan, Puerto Rico, with R&D facilities in Austin, Texas, ÐÓ°ÉPro operates in Chile—home to over half of the world’s lithium reserves.

Sustainable Solutions for a Greener Future

ÐÓ°ÉPro’s technologies align with global sustainability goals:

• Environmental Benefits: Traditional lithium extraction methods consume significant water resources, impacting local ecosystems. ÐÓ°ÉPro’s DLE technology minimizes water usage and reduces the environmental footprint of lithium mining, addressing concerns associated with conventional extraction techniques.

• Supporting the Clean Energy Transition: By providing more efficient and environmentally friendly lithium extraction methods, ÐÓ°ÉPro contributes to the broader adoption of EVs and renewable energy storage solutions, essential components in combating climate change.

Empowering Investors in the Battery Revolution

ÐÓ°ÉPro’s innovative approach extends to its funding strategies:

• Accessible Investment Opportunities: ÐÓ°ÉPro raised $75 million through a Regulation A+ offering, enabling nearly 40,000 retail investors to join major backers like GM and POSCO. Powered by DealMaker, this initiative highlights ÐÓ°ÉPro’s commitment to democratizing clean energy investment.

In conclusion, as global supply chain dynamics evolve and the demand for sustainable energy solutions rises, ÐÓ°ÉPro stands at the forefront of the lithium revolution. Through its cutting-edge technologies and inclusive investment approaches, the company is poised to play a pivotal role in shaping the future of energy.

The post Why ÐÓ°ÉPro is Leading the Lithium Revolution Amidst Global Supply Chain Shifts appeared first on ÐÓ°ÉPro: Lithium Extraction ÐÓ°ÉPro.