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XThe Lithium Race Takes Shape in the Salton Sea
David Shultz
David Shultz reports on clean technology and electric vehicles, among other industries, for dot.LA. His writing has appeared in The Atlantic, Outside, Nautilus and many other publications.
Located roughly a hundred miles east of San Diego, the Salton Sea is California’s largest landlocked body of water, for now.
Measuring 5 miles across and 35 miles long in its current form, the lake was created by diverting water from the Colorado River into the region for agricultural purposes. Once a vacation destination renowned for its wildlife and wetlands, a series of environmental mishaps and mismanagement have left the lake toxically salty, shrinking and often malodorous. Conditions have gotten so bad that Palm Springs Life Magazine called the region’s transformation “the biggest environmental disaster in California history” in March of 2020.
But against this unlikely backdrop, new life—or at least new industry—is scrambling to set up shop in the region. The Salton Sea, it turns out, is rich with lithium, an element that has taken center stage in the world’s transition to clean energy and its ever-growing demand for batteries. From smartphones to electric vehicles, there’s a pretty good chance that the last battery you used had lithium ions inside. Prices for the metal reached an all time high in September, and futures are up more than 400% since the start of 2021. With Biden’s new economic policy outlined in the Inflation Reduction Act, there are strong financial incentives to move battery production back to North America.
If that’s going to happen the Salton Sea could very well become the lithium capital of North America, or to paraphrase Governor Gavin Newsom, the region could become the “Saudi Arabia of lithium,” and the players are already starting to assemble.
Currently, there are three companies attempting to set up plants in the Salton Sea for direct lithium extraction: EnergySource Minerals, Controlled Thermal Resources and BHE Renewables, a branch of Berkshire Hathaway. All three companies have similar business strategies from a high level, all of which involve geothermal power plants. These plants, which are common in many parts of the world, draw hot, salty water from deep in the ground to create steam which drives a turbine to produce electricity. What makes the Salton Sea so special is that its geothermal brines just happen to contain lithium.
In a 2017 study, researchers from the U.S. DOE Office of Energy Efficiency and Renewable Energy analyzed more than 2,000 samples of geothermal fluid from U.S. sources and found that only 1% had significant lithium concentration. This rare confluence of geothermal activity and lithium presence provides an opportunity for companies to generate electricity and mine lithium simultaneously.
Beyond their marriage of geothermal energy and lithium extraction, the three companies begin to diverge.
According to former dot.LA engagement editor Luis Gomez — whose newsletter Lithium Valle, is essential reading on this topic — EnergySource seems to be out in front early.
“They claim to have the technology that’s patented, they claim to have done the research, they claim to have the funding, and they claim they're ready to go and start production,” says Gomez. “They are kind of considered the canary in the coal mine.”
According to a report from the United States Department of Energy, EnergySource plans to eventually scale production up to over 20,000 metric tons of lithium hydroxide per year using its proprietary Integrated Lithium Adsorption Desorption technology.
Construction on the plant was slated to start earlier this year, but has been delayed. EnergySource has said publicly that lithium production might begin in the second quarter of 2024, but it’s unclear whether this date will also be pushed back. The company has a long history of operating in the region, having run the John L. Featherstone geothermal plant since 2012. The new venture into lithium would leverage that same plant, but without more details about how their proprietary technology works, there’s not much to do but wait and see.
One potential problem facing all three lithium extraction companies is that the Salton Sea geothermal brines are not the same as the brines in evaporation ponds similar to those in Argentina, Chile and Bolivia, where more than half of the world’s lithium is produced. Specifically, the deep geothermal brines in the Salton Sea contain more silica and transition elements, which may complicate the chemistry of purifying the lithium. Still, many researchers are extremely bullish on the prospect of tapping into these reserves. Alex Grant, The Principal at Jade Cove, a research organization focusing on direct lithium extraction technologies, says that much of the skepticism surrounding the technology can be attributed to competing financial interests that are trying to squash the nascent tech’s potential in favor of an established method.
Lithium Mines in the Atacama Salt Flats, Chile from an altitude of 15km via Google Earth. The facility is about 10km wide.
Google Earth
For its part, BHE Renewables, operating as CalEnergy, runs a fleet of 10 geothermal plants in the Imperial Valley. The company had previously announced its intent to set up a direct lithium extraction demonstration plant sometime before the end of 2022 to assess the viability of lithium extraction. If that pilot program goes well, the company could build a commercial-scale facility as early as 2026 with a projected annual capacity of 90,000 metric tons of lithium.
Obviously, having the backing of Berkshire Hathaway comes with advantages and capital. Add into the equation another $15 million in DoE grant money obtained last winter, and BHE appears to be well positioned as a major player in the long term.
Finally, there’s Controlled Thermal Resources. As the only company not already operating a geothermal business in the region, CTR is something of an outsider and dark horse. By 2024, the company hopes to build both a geothermal energy plant and a direct lithium extraction plant to operate in parallel, projecting a capacity to extract 300,000 metric tons of lithium carbonate equivalent annually by 2030. As dot.LA previously reported, Controlled Thermal Resources has partnered with Statevolt, a company that intends to build a $4 billion gigafactory nearby that will run on power from CTR’s geothermal plant and make batteries from the lithium it extracts. It’s a beautiful closed-loop business model. But again, all of this relies on the direct lithium extraction technology, and details are scant.
According to Gomez, despite the typically cut-throat nature of the energy industry, the relationship between the three upstarts in the Salton Sea is often surprisingly cooperative at the moment.
“They want the others to succeed because it kind of gives them the confidence that their technology is also eventually going to succeed,” he says. “It gives confidence to investors.”
Which is all to say, there may well be space for all three companies if the technology is as solid as they claim. If that’s the case, the Salton Sea and its surrounding region may have yet another miraculous transformation up its sleeve.
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David Shultz
David Shultz reports on clean technology and electric vehicles, among other industries, for dot.LA. His writing has appeared in The Atlantic, Outside, Nautilus and many other publications.
LA’s Upgrade in Travel and NBA Viewing
08:41 AM | July 26, 2024
Image Source: Los Angeles World Airports
🔦 Spotlight
Exciting developments are underway for Los Angeles as the city prepares for major upgrades in both travel and entertainment. The Los Angeles Board of Airport Commissioners has approved an additional $400 million for the Automated People Mover (APM) at LAX, increasing its total budget to $3.34 billion. This boost ensures the elevated train’s completion by December 8, 2025, with service starting in January 2026. For Angelenos, this means a significant improvement in travel convenience. The APM will streamline connections between parking, rental car facilities, and the new Metro transit station, drastically cutting traffic congestion around the airport. Imagine a future without the dreaded 30-minute traffic delays at LAX! The APM will operate 24/7, reducing airport traffic by 42 million vehicle miles annually and carrying 30 million passengers each year, while also creating thousands of local jobs and supporting small businesses.
Meanwhile, the NBA is also making waves with its new broadcasting deals. The league has signed multi-year agreements with ESPN, NBC, and Amazon Prime Video, marking a notable shift in media partnerships. ESPN will maintain its long-standing role, NBC returns as a network broadcaster after years away, and Amazon Prime Video will provide NBA games through its streaming platform. Starting with the 2025-2026 season, these deals will enhance the league's reach and revenue, aligning with the NBA's goal to expand its audience and adapt to evolving viewing habits. Whether you're catching the action on TV or streaming online, these changes promise to elevate the fan experience and bring more basketball excitement to Los Angeles.
🤝 Venture Deals
LA Companies
- Pearl, a startup that makes AI-powered software that assists dentists in identifying cavities, gum disease, and other dental conditions, raised a $58M Series B funding led by Left Lane Capital with Smash Capital, and others also participating. - learn more
LA Venture Funds
- Fulcrum Venture Group participated in a prior $3.5M Pre-Seed Round for Code Metal, a developer tools startup. - learn more
- B Capital co-led a $12.5M Seed Round for Star Catcher, a startup that aims to develop a space-based grid that captures solar energy in space and distributes it to satellites and other space assets. - learn more
- Mantis VC and Amplify participated in a $140M Series C for Chainguard, an open source security startup. - learn more
- Prominent LA venture capitalist, Carter Reum and wife, Paris Hilton, participated in a $14M Seed/Series A for W, the men’s personal care brand from Jake Paul. - learn more
LA Exits
- Warner Bros. Games acquired Player First Games, developer of the recently launched MultiVersus free-to-play platform fighter videogame. - learn more
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Dental Startup Pearl Gets FDA Clearance for AI-Powered X-Ray Platform
04:57 PM | March 08, 2022
Courtesy of Pearl
Sign up for dot.LA’s daily newsletter for the latest news on Southern California’s tech, startup and venture capital scene.
A West Hollywood-based startup has received Food and Drug Administration clearance for what it calls the first artificial intelligence-enabled product that can read dental x-rays and identify cavities, plaque and other dental conditions.
Second Opinion is an AI detection platform created by Pearl, a dentistry startup founded in 2019 to leverage machine learning and AI to help dentists detect problems in otherwise healthy teeth. The startup raised $11 million in Series A funding in 2019 from Craft Ventures and Santa Monica-based Crosscut Ventures.
To develop Second Opinion, Pearl gathered over 100 million dental x-rays from dental practices and academic institutions. The AI platform points out discrepancies found in an x-ray and also serves as a patient communication tool, allowing dentists to show different models of a patient’s teeth and point out problem areas.
“I do think that this is going to become very fundamental to the category [of dentistry] very quickly, and therefore will actually serve as a model for the rest of medicine—for how to infuse and deploy a AI widely at scale, with the ultimate benefit and potential of really elevating the standard of care in a provable way,” Pearl founder and CEO Ophir Tanz told dot.LA.
Pearl’s AI program examine teeth.Courtesy of Pearl
The FDA’s clearance comes amid ongoing skepticism from some within the medical community about the effectiveness of AI applications. A presentation made by the American College of Radiology to the FDA in 2020 reported that 95% of clinicians thought AI was too inconsistent or inaccurate to be used by medical practices. Though the FDA is the largest regulatory body in health care, it has no consistent framework for signing off on a piece of AI that can guide diagnostics, such as the number of reference images used, the diversity of its dataset or its accuracy rate. This has slowed down the clinical adoption rate of such technologies—and while the FDA has proposed a framework to address some of these challenges, nothing has been implemented yet.
Second Opinion’s journey to receiving FDA clearance involved a multi-year process to test every single use case that the platform is trained to do—such as identifying tooth decay, plaque, bone lesions around a tooth and a handful of other discrepancies in otherwise-healthy teeth. Receiving FDA clearance entails a separate and different process than receiving FDA approval; while the former indicates that a product is as good as existing alternatives already on the market, the latter requires a different set of processes for more novel or riskier products to prove that their benefits outweigh potential drawbacks. Tanz noted that the FDA sought only clearance for Second Opinion, and neither required nor asked for approval to allow the product to be marketed in the U.S.
A patient goes under the lights in the dentist’s office.Courtesy of Pearl
Though some critics claim that AI can’t pick up on certain nuances that a human dentist might, Pearl contends that those critics often fail to account for the counter-argument of human error. Through the nonprofit Dental AI Council, the startup commissioned a study that found when presenting a panel of 136 dentists with an X-ray to review, roughly half of them found a cavity, while the other half found none.
Tanz said he is not interested in expanding Pearl’s services into radiology at large, and acknowledged that bottlenecks in the FDA process make it harder to develop, clear and adopt similar technology. Already, the startup has received regulatory approvals from Canada, Australia, the U.K., the European Union and the United Arab Emirates, and is working with roughly 4,000 dental organizations and radiograph manufacturers.
“We think of this as a utility, kind of like water or power,” Tanz said. “You're not going to have any dental practice where this is not going to be powering the radiographic side of things… We really do believe that this will be integrated into every practice in the world in a relatively short period of time.”
Update, March 10: This article has been updated to clarify the difference between FDA clearance and FDA approval, and to specify that Pearl's Second Opinion product did not require FDA approval to be marketed in the U.S.
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Keerthi Vedantam
Keerthi Vedantam is a bioscience reporter at dot.LA. She cut her teeth covering everything from cloud computing to 5G in San Francisco and Seattle. Before she covered tech, Keerthi reported on tribal lands and congressional policy in Washington, D.C. Connect with her on Twitter, Clubhouse (@keerthivedantam) or Signal at 408-470-0776.
https://twitter.com/KeerthiVedantam
keerthi@dot.la
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