DOE launches Geothermal Center of Excellence to push U.S. geothermal toward gigawatt scale The U.S. Department of Energy has launched a new Geothermal Center of Excellence in Golden, Colorado, with a clear mandate: connect industry with the national labs, accelerate geothermal innovation, and help move the technology toward gigawatt-scale deployment. The center is part of DOE’s effort to position geothermal as a more competitive source of reliable baseload electricity in the United States. The announcement matters because it comes at a time when geothermal is gaining fresh attention from policymakers, developers, and power buyers, especially as data centers and industrial users look for firm clean electricity. DOE says the U.S. already leads the world in geothermal electricity capacity at just over 4 GW, but that current output represents only a fraction of the country’s technical potential. [1] Why DOE created it DOE says the new center is designed to become industry’s main entry...
GEL’s Technical-Grade Lithium Milestone Could Reshape UK Critical Minerals Supply
Geothermal Engineering Ltd’s latest announcement is an important step for the UK’s lithium ambitions. The company says lithium carbonate produced from deep geothermal brine at United Downs now meets the 99.3% purity threshold for technical-grade material, which means it can be sold directly to battery supply chains without further refining.
Why this milestone matters
This is significant because it moves geothermal lithium closer to commercial relevance, not just technical proof. A material that already meets market specification is much easier to integrate into downstream battery and industrial supply chains. It also strengthens the case that geothermal brines can support both clean power generation and critical minerals production from the same asset base.
For the UK, the timing is especially relevant. The government has set a target of meeting 10% of domestic critical mineral demand from homegrown production by 2035, including at least 50,000 tonnes of lithium carbonate. GEL’s announcement positions the company as a potentially important contributor to that target.
What GEL has achieved
According to the company, the lithium carbonate from United Downs now exceeds the internationally recognised technical-grade purity threshold. That matters because battery producers generally require high-purity material, and achieving the specification at source reduces processing complexity and cost.
GEL says the milestone validates its proprietary approach and supports its transition from pilot development to larger-scale output. The company began production in February 2026 and currently has capacity of 100 tonnes per year, with ambitions to expand substantially over the coming years.
The scale-up plan
The company’s longer-term production forecast is ambitious. GEL says output at United Downs could reach about 2,000 tonnes per annum by 2029, and as additional sites are added, total production could rise to 30,000 tonnes per annum by 2033. If achieved, that would cover more than 60% of the UK’s 50,000-tonne lithium target on its own.
That projection is striking because it ties one company’s expansion plans directly to national industrial policy. It suggests that geothermal lithium could become a meaningful part of Britain’s clean-tech manufacturing strategy, not just an experimental side project.
Geothermal plus lithium
One of the most interesting aspects of GEL’s model is that it combines lithium extraction with geothermal electricity production. That makes the resource more attractive from both a financial and environmental standpoint because the same underground brine system can support multiple revenue streams.
The company also says benchmarking studies rank its lithium among the most sustainable globally, largely because the process is paired with geothermal power. In a market where battery supply chains are increasingly judged on emissions, water use, and traceability, that kind of profile can be a strong differentiator.
Why investors will care
From an investment perspective, the key point is that this announcement reduces uncertainty. Producing a marketable product at technical-grade purity shows that the company is moving beyond concept and toward commercial execution. That can improve credibility with investors, policymakers, and potential customers alike.
The reported market reference price of about $22,000 per tonne as of August 20, 2026, also helps frame the opportunity. Even modest early production can be economically meaningful if scaling proceeds as planned and if the company can maintain quality while increasing output.
The bigger UK context
This milestone also fits into a broader push to rebuild strategic industrial capacity in the UK. Lithium is one of the most important battery materials in the global energy transition, and securing domestic supply has become a policy priority across Europe. GEL’s project offers a rare example of a UK-based resource that can support both energy and materials goals.
Julian Hetherington of the Automotive Transformation Fund described United Downs as evidence of the “huge opportunity” for a domestic, sustainable lithium supply chain. That endorsement matters because it shows the project is being viewed not just as a company milestone, but as part of the country’s wider industrial strategy.
What happens next
The next challenge is scale. Producing high-purity lithium at 100 tonnes per year is an achievement, but the real test is whether GEL can move reliably toward thousands of tonnes without losing product quality or economic efficiency. The company’s expansion timeline will be watched closely by both the geothermal and battery sectors.
If the company delivers on those ambitions, it could become one of the clearest examples of geothermal-brine lithium moving from novelty to commercial supply. That would be an important development for the UK, and possibly a model for other geothermal regions looking to pair power generation with critical mineral extraction.
Source: Geothermal Engineering Limited
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