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What even is “energy independence”?

For being so cozy with (not to mention bankrolled by) the oil and gas industry, Donald Trump still manages to get a lot wrong about the world’s dominant petroleum industry. Here’s everything he’s gotten wrong, and occasionally right, about the oil and gas industry while on the 2024 campaign trail.
“On January 6, we were energy independent.” [June 27, 2024]
Fact check: What does “energy independence” actually mean? Experts frequently dismiss the term as a political buzzword that isn’t helpful for understanding the United States’ position in the global energy market.
According to one definition, “energy independence” means that the United States produces more energy than it consumes. By this metric, the U.S. became energy independent in 2019, during the Trump administration, for the first time in 40 years, though it was the cumulative result of the shale boom that started in 2005 and stretched across three presidential administrations. By this same metric, U.S. “energy independence” actually reached its highest level in 70 years in 2022 under President Biden, not Trump.
Another way to define “energy independence” would be that the U.S. doesn’t import any energy. This definition would also make Trump’s statement inaccurate: In 2020 under Trump, the U.S. imported 7.9 million barrels of crude oil and petroleum products per day. In 2023, under Biden, that number rose to 8.51 million barrels per day. Under both Trump and Biden, the U.S. has been a net exporter of oil products due in large part to its processing of crude oil. Check out this visualization from the U.S. from the Energy Information Administration for more granular detail on U.S. petroleum flows.
“We’re refining the oil. We have our refinery for that oil. It’s really, I call it tar. It’s not oil. It’s terrible. We have real stuff, but we’re refining it in Houston. So for all of the environmentalists, you ought to look at that because all of that tar is going right up into the atmosphere. You just ought to take a look. It’s the only plant that can do it. We have the only plants that can take tar and make it into oil.” [ March 6, 2024]
Fact check: Just because Trump decides to call something “tar” doesn’t mean it actually is tar. What he seems to be talking about here are the Canadian oil sands, sometimes called tar sands, which contain bitumen. The heavy, dirty, and diluted crude oil is transported via rail and pipeline from Canada to Texas, which is where most (but contrary to Trump’s claim, not all) of the world’s specialized heavy oil refineries are located.
Extracting, transporting, and refining bitumen is a pollution-heavy process. “All of that tar” doesn’t literally go “right up into the atmosphere,” but the refining process does emit benzene, carbon monoxide, and sulfur dioxide, which are known to increase instances of cancer, asthma, and other health conditions in the people who live or work nearby.
“Just yesterday, Biden blocked the export of American natural gas to other countries … Now, why he stopped it, I guess it was the environmentalists. I guess. But it’s good for the environment, not bad. And it’s good for our country. I will approve the export terminals on my very first day back.” [Jan. 27, 2024]
Fact check: This is wrong in a number of ways. Let’s take it from the top: First, Biden did not block the export of liquified natural gas to other countries; he temporarily paused the approval of new licenses to export LNG, including 17 that had been in the, er, pipeline. The United States is already the top exporter of LNG in the world, with output expected to double by the end of the decade from projects that are already licensed and under construction. The LNG licensing pause “will not impact our ability to continue supplying LNG to our allies in the near-term,” the Biden administration has said; current exports have been more than enough to meet Europe’s needs so far, even accounting for the war in Ukraine.
The permitting process will resume once the Department of Energy has updated its criteria for determining whether new LNG export terminals are in the “public interest” once their climate impacts are considered.
Now, about those climate impacts: It’s true that natural gas burns “cleaner” than coal, producing about 40% less carbon dioxide (and about 30% less than oil). But natural gas is also largely composed of methane, “a climate-altering super pollutant,” Jeremy Symons, an environmental and political analyst and strategist, told Heatmap.
While methane breaks down more quickly in the atmosphere than CO2, it also traps more heat — about 80 times more heat over the course of 20 years. The process of liquifying natural gas not only requires additional energy, it also introduces new opportunities for methane to leak, adding to the fuel’s climate impacts. Once all those leaks have been quantified, argues Cornell University researcher Robert Howarth, LNG is not only not beneficial to the environment, it’s actually worse than other fossil fuels. Howarth’s paper has not yet been peer-reviewed, and some have questioned his conclusions in the past. But there’s no question that building new LNG facilities will lock the U.S. into producing planet-warming fuel for years to come.
LNG certainly isn’t “good for the environment” of the people who live near fracking sites and export terminals, either, where health issues are rampant. In addition to methane, LNG plants release volatile organic compounds, which have been linked to higher instances of cancer, asthma, and birth defects.
“You have the highest energy costs in the entire country. In the first year, they’re going to be reduced by 50% because we’re going to drill, baby, drill.” [Jan. 23, 2024]
Fact check: Trump made these remarks after winning the New Hampshire primary — and they’re wrong. For one thing, while energy is expensive in the Granite State, New Hampshire’s Department of Energy says its energy costs are the fifth-highest in the lower 48.
There’s an even bigger fallacy in Trump’s statement, though: that drilling can quickly lower energy prices. For one thing, oil from new leases doesn’t hit the market for at least four years, according to the Government Accountability Office. (Offshore drilling takes even longer since building the rigs alone can take two to three years.) As NPR explains, there are also operational limits; drilling new wells is “not as simple as turning a spigot and watching oil gush out.”
Much to the dismay of environmentalists, the Biden administration has also been keeping pace with Trump’s historic drilling. In fact, as of 2024, the U.S. is producing more domestic crude than at any point during Trump’s presidency.
But even with all this new domestic crude, the U.S. is still susceptible to fluctuations in the global price of oil. That’s partially because the U.S. imports a different kind of oil than it exports — what those in the trade call light, sweet crude, compared to the gunkier, heavy crude most U.S. refineries are set up for. Reconfiguring refineries to handle the light crude oil “could underserve some product markets and idle (or even strand) the hundreds of billions of dollars invested in refinery conversion capacity,” the American Petroleum Institute warns. Plus, it would also take even more time.
All that means that the U.S. is stuck relying on importing and exporting oil even if domestic production ramps up even more than it already has. And that, in turn, means we’re at the mercy of fluctuations in global energy costs, which remain out of the White House’s singular control.
One more thing to note: “The oil industry can decide to produce more oil whenever it wants,” the Center for American Progress, a liberal public policy think tank, explains, noting that the oil industry is sitting on “more than 9,000 approved — but unused — drilling permits on federal lands.” This is the base of the criticism that the oil industry is raking in “unprecedented profits” and burdening Americans with an artificially high cost of energy.
“Energy caused inflation, and energy has destroyed many families. Energy is considered very strongly. Energy is considered a country killer.” [Dec. 17, 2023]
Fact check: Economists mostly agree that “energy caused” the spike in inflation that we’ve seen since 2020, so in that sense, Trump is correct. But in making this argument, he inadvertently endorses the case for clean energy — since renewables aren’t subject to the same kinds of supply volatility as fossil fuels, they are therefore considered intrinsically deflationary.
“We are a nation that is begging Venezuela and others for oil. ‘Please, please, please help us,’ Joe Biden says, and yet we have more liquid gold under our feet than any other country anywhere in the world. We are a nation that just recently heard that Saudi Arabia and Russia will be reducing their oil production while at the same time substantially increasing the price. And we met that threat by announcing that we will no longer be drilling for oil in large areas in Alaska or elsewhere, anywhere in our states. We are a nation that is consumed by the radical left’s Green New Deal, yet everyone knows that the Green New Deal is fake. It is really the green new scam.” [Dec. 17, 2023]
Fact check: First, the United States is the top oil-producing country globally, followed by Russia and Saudi Arabia. It is true that the U.S. eased oil sanctions on Venezuela late last year, though that reprieve was explicitly temporary and contingent on the country holding free and fair elections.
Trump also appears to be referencing the Biden administration’s recent decision to cancel oil and gas leases in the Arctic National Wildlife Refuge and block 13 million acres in the National Petroleum Reserve in Alaska from new drilling. While that does qualify as a large area in Alaska, the moves notably do not stop ConocoPhillips’ controversial Willow drilling project from going forward.
Trump further seems to be alluding to Biden’s campaign promise to not approve any new drilling (“ ...anywhere in our states!”), but that hasn’t exactly gone to plan; although Biden issued a pause on new oil and gas leases on federal lands one week after taking office, the administration then lifted that pause a little over a year later in the face of numerous legal and political challenges. Over the summer, however, the Interior Department did raise the cost of drilling on federal lands.
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Risk-averse but deep-pocked institutional investors join the party.
When the Fusion Industry Association surveyed the sector earlier this month, it found that the industry’s 56 active companies had collectively raised more than $14.2 billion over the past five years. But an ever-larger share of that money is ending up in the hands of one startup: Commonwealth Fusion Systems.
With its latest $1 billion funding round, announced today, the MIT spinout now accounts for nearly 30% of all capital in the industry. The new financing, led by a wave of institutional investors entering the sector for the first time, will support construction of the company’s first commercial power plant in Chesterfield County, Virginia, which CEO Bob Mumgaard says is on track to come online in the early 2030s.
In a media briefing, Mumgaard noted that this latest raise marks “the largest single funding round among fusion energy companies since our last large round of $1.8 billion in 2021.” It brings the total capital raised by CFS to an even $4 billion as the company races to complete construction of SPARC, its demo reactor. If all goes according to plan, it should begin operating sometime next year, proving out the physics and engineering approach underpinning ARC, the planned commercial plant.
The new financing deviates from the typical venture capital round, as it brings in a broad but unnamed mix of “large pension funds, sovereign wealth funds, infrastructure funds doing project finance, and industrial corporates.” These risk-averse investors would typically steer clear of expensive, first-of-a-kind facilities, demonstrating the degree to which CFS has succeeded in building confidence in an industry long critiqued for overpromising and underdelivering.
The company credits the trust it built to its extensive peer-reviewed research as well as its decision to build a tokamak — widely regarded as the most mature fusion reactor design. “I don’t think there’s any other company that’s been as transparent and open with their physics and how it actually works,” Katie Rae, CEO and managing partner at Engine Ventures, told me. Rae has participated in every one of CFS’s funding rounds, and while she says her firm has evaluated virtually every startup in the sector, the company remains its only fusion investment.
But even flush with institutional capital, Mumgaard is clear that the company will need billions more to fully finance ARC and the numerous reactors to follow. It’s unclear where exactly that money will come from, though he’s pushing for government involvement. Alongside the Fusion Industry Association, Mumgaard is advocating for a one-time, roughly $10 billion federal infusion of cash into the broader industry to expand public-private partnerships, build shared research infrastructure, and help finance first-of-a-kind plants in an effort to keep pace with China’s rapidly growing fusion program.
According to reporting from Politico, a Department of Energy official told CFS and other fusion companies that such a level of federal funding is “unrealistic in this environment.” But though insiders argue it’s what the industry needs to scale, Rae says CFS doesn’t depend on it. “I think it is the right kind of investment to make, but we didn’t count on it from an investor perspective,” she told me.
One obvious alternative is the public markets. The IPO window for climate tech has reopened, with geothermal giant Fervo and nuclear fission startup X-energy both completing successful public offerings in recent months. SPACs have also made a comeback, as numerous nuclear companies are opting for this faster, though riskier, path to the public markets. But CFS’s newly appointed CFO, Lorence Kim, said during the briefing that this latest round proves “that the private markets have a lot of capital to deploy toward our mission.” Whether an IPO is in the company’s near future remains an open question, though he cautioned against interpreting his hiring as any indication of “IPO prep in a specific way.”
For what it’s worth though, Kim has taken another high-profile, pre-revenue startup public before: Moderna. As CFO from 2014 to 2020, he helped the company scale its mRNA platform and lead its blockbuster $600 million IPO in late 2018 — the largest ever in the biotech industry at the time. Notably, this all happened before Moderna had an approved product or the Covid pandemic made its signature vaccine a household name, similar to where Commonwealth finds itself today.
“Moderna was in this moment in time where the science worked, and the strategy was focused on execution and scale and deploying capital in a way that could enable real impact on the world,” Kim explained. CFS is now at the same juncture, he said. “And so in the same way that Moderna industrialized mRNA and made it inevitable and made it ubiquitous, it was really clear to me that CFS could do the same for fusion.”
Of course, CFS is not alone in its confidence — other fusion companies are equally bullish on their own approach. Take Inertia Enterprises, a Lawrence Livermore National Laboratory spinout, which last week unveiled its own commercial roadmap for a laser-driven fusion reactor. The company emphasized it’s the only one to have definitively demonstrated the viability of its underlying physics in a real-world experiment, rather than through theoretical work or simulations.
Or take Helion, which has raised $1.5 billion and secured a highly ambitious power purchase agreement with Microsoft to supply electricity to the tech giant by 2028. Or Pacific Fusion, which netted a staggering $900 million Series A to be doled out in milestone-based tranches. There are dozens of others — many with hundreds of millions in funding — pursuing a range of approaches that some of the field’s brightest minds consider technically feasible.
But when I mused to Rae about how exciting it is that institutional investors now appear willing to back an industry once viewed as bordering on science fiction, she was quick to correct me.
“They’re willing to bet on Commonwealth Fusion — that’s what you mean.”
At least one hyperscaler’s big bets seem to be paying off.
This is an edition of Heatmap Daily, an evening review of the day’s news written by our executive editor. Sign up for it here.
Good evening. Let’s start with the news. Meta and Microsoft released their most recent quarterly earnings this evening, and Wall Street was watching to figure out if their enormous AI spending plans are paying off. We were watching because those proposals are shaping one of the most important energy stories today: the data center boom and the sharp return of electricity demand.
The returns were … mixed. Meta missed analysts’ estimates, and its profit fell 14% from the same quarter a year earlier. It increased the lower bound of how much it plans to spend on capital expenditures such as data centers this year, from $125 billion to $130 billion, but left the upper bound of $145 billion unchanged.
Microsoft, meanwhile, said its AI investments are starting to pay off. Revenue at its cloud business, which uses its data center space, increased by 43%, more than analysts expected. It spent $41 billion on capital expenses in the three months ending in June.
Meta’s stock was down 7% in after-hours trading, while Microsoft is up 8%. When Heatmap surveyed climate insiders last year, they ranked Microsoft as among the most decarbonization-friendly hyperscaler and Meta as among the worst.
Permitting odds up — thanks to Shift Key?
I do not regularly follow such things, but this afternoon I was told that the Kalshi market for “Will permitting reform become law this year?” surged to 77% today after trading for days around 50%:
I have no idea why it budged today, but perhaps what moved the market was our new episode of the Shift Key podcast (Apple, Spotify). On today’s show, I spoke with Daniel Palken, a former Capitol Hill policy staffer now at Arnold Ventures, about the current state of permitting reform negotiations in Congress. While we don’t know the exact shape of a deal yet, permitting reform is likely to be the biggest new policy for clean energy that we could get by the end of the year.
Daniel is a fantastic guide to the negotiations, and if you’re curious about the policy at all, I recommend that you listen. Here are few of my takeaways from the conversation:
1. A permitting reform deal will probably have six buckets.
They are (1) changes to the National Environmental Policy Act and the judicial review process that environmental studies face after completion; (2) reforms to the transmission process; (3) changes to the Clean Water Act; (4) a deal to make it harder for presidents to yank permits from approved projects; (5) changes to the National Historic Preservation Act, and (6) “everything else,” a grab bag of smaller fixes including to geothermal energy.
2. Wonky committee politics are shaping the deal.
The National Historic Preservation Act, for instance, is an archeological law that hasn’t been in the mix for previous reform proposals. It’s up for discussion now because Senator Mike Lee of Utah chairs the Senate Energy and Natural Resources Committee — and the NHPA is the major environmental bill under his jurisdiction. Likewise, observers think that a permitting deal has a much better shot of passing during this Congress (as compared to next year) because of an expected series of changes to committee chairs.
3. It’s way, way better to hook data centers to the power grid than run them off behind-the-meter power plants — even if they run off 100% natural gas.
Any permitting reform proposal will seek to expand the transmission system. That could have big benefits for the emissions intensity of data centers. Why? I’ll let Daniel explain:
If you look at the data centers that are hooking up off grid — when they’re not using repurposed jet engines, they’re using 20% thermally efficient gas plants. Whereas if you’re hooked up to the grid, there’s really two types of gas plants that live on the grid. There’s like 60% efficient combined-cycle gas turbines, which are most of the gas power that’s generated, and then there’s peaker [plants], which have low efficiency, but are run at capacity factors of like 5% — so from an emissions perspective, they don’t matter all that much.
So even if solar and wind didn’t exist at all, and nuclear didn’t exist, and hydro didn’t exist, it would still be a much, much cleaner option [to connect data centers to the power grid]. Like we’re talking factors of three in efficiency to connect your data center to the grid if it was purely powered by gas, which is, I think, an important point to understand.
I thought that was an interesting point, and while I’d seen some of those ideas in isolation, I’d never seen them laid out in one place. (And even if grid-scale gas plants are much more efficient than behind-the-meter plants, it’s still even better to power data centers with solar, batteries, and other clean firm power plants — which is also easier when they’re hooked up to the grid.)
I’ll stop glossing the episode and just link to it one more time. Thanks for reading.
On nuclear waste, a Nevada solar farm, and lithium-harvesting nanorobots
Current conditions: France just ordered 4,000 more people to evacuate the wildfires that have now displaced a third of a million people across southwestern Europe • The heat dome in the southwestern United States is driving temperatures in Phoenix up to 113 degrees Fahrenheit by the end of the week • Temperatures in Tuscany are topping 100 degrees this week as Europe’s latest heat wave takes hold.
Just yesterday, I told you that China’s dominance over the manufacturing of the inverters needed to patch solar panels and batteries onto the grid and into data centers had peaked two years ago as Europe’s factories began booming. Hours after the newsletter landed in your inbox, the Trump administration unveiled plans to ban imports of Chinese power inverters in a bid to protect the U.S. buildout of artificial intelligence from sabotage and competition. On Tuesday, the Federal Communications Commission told CNBC its new restrictions aimed to safeguard the AI supply chain “from Chinese threats of disruption, data threat, and cyber attacks.” The measures also bar imports of Chinese-made humanoid and quadruped robots. As you may recall, Reuters broke news in May 2025 that the U.S. government had discovered rogue communications devices in the Chinese-made inverters. The story came out just a month after a frequency problem that stemmed from Spain’s struggle to sufficiently patch all of its solar generation on the grid triggered a blackout across Iberia, highlighting the sort of scenario a compromised “killswitch” device could set off in a bid to attack energy systems.
The ban is good news for America’s beleaguered solar manufacturing industry, which the Trump administration has championed with tariffs but hobbled by axing key federal tax credits that included bonuses for projects using domestically produced panels. T1 Energy, shares of which nosedived this week after the latest quarterly earnings showed losses far outpacing revenue, just spent another $135 million on patents from a rival in Singapore in a bid to vertically integrate production of a more efficient type of photovoltaic technology. Tesla, meanwhile, is promising to “multiply” American solar production by “an order of magnitude.” Yet Elon Musk’s behemoth is cutting long-term deals to buy other people’s solar power. The company just inked an agreement with a KKR-backed solar and battery project in Arizona to buy 90% of its output.

Reasonable people debate just how much electricity is needed to satisfy the demands of the data center boom — and the bears are likely to get a boost amid this week’s selloff of AI stocks. But the latest projections from the Rhodium Group forecast U.S. electricity demand growth to accelerate over the next 15 years, “growing faster than it has since the turn of the century.” Data centers will account for between 62% and 77% of the growth in 2030, and between 59% and 66% in 2040, ultimately reaching 17% of total electricity demand that year. Electric vehicles will make up the second-largest source of new demand growth in the low- and mid-emissions scenarios the consultancy outlined through 2040. In the high-emissions scenario, heavy industry will account for a quarter of the demand growth between 2025 and 2040. Overall, the findings show divergent pathways in the 2030s. By 2040, the U.S. will either reduce its greenhouse gas emissions by 41% below 2005 levels — or just 27%. Across all three scenarios, the “historic influx of renewables” coming online between now and 2030 keeps emissions declining. After 2030, however, the grid’s trajectory either continues to deploy nearly 53 gigawatts of renewables per year through 2040 in a low-emissions scenario or drops to 3 gigawatts per year in a high-emissions scenario where cheap natural gas dominates.
For months now, the Greenhouse Gas Protocol, the nonprofit behind a voluntary but widely used corporate standard for carbon accounting rules, has been revising its approach. Last year, my colleague Emily Pontecorvo explained the stakes of the revision process as an “obscure philosophical battle that could reshape the clean energy economy. In April, she broke news from whistleblowers that the changes underway were drumming up controversy. This morning she’s out with a new story on Greenhouse Gas Protocol’s plans to marry its standard to those by the International Organization for Standardization. The short of it is this: the changes are getting a lot of pushback, and credibility of the forthcoming new standard remains an open question.
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For decades, the U.S. plan to deal with nuclear waste has focused on building a highly controversial repository in the Nevada desert. But that effort, as I explained yesterday, was put on indefinite hiatus in 2010 when the Obama administration canceled funding on behalf of then-Senate Majority Leader Harry Reid, a Nevada Democrat. In the meantime, states such as Texas and New Mexico have demonstrated that both Republican and Democratic governments are still willing to fight efforts to build intermediate-term storage facilities for nuclear waste in their states. On Tuesday, five states officially stepped up and made bids to host what the Department of Energy is calling its Nuclear Lifecycle Innovation Campuses, which will house startups that recycle spent nuclear waste into fresh fuel and medical isotopes. The Energy Department named Utah, Tennessee, Oklahoma, Louisiana, and Idaho as finalists for the facilities. “I’m pleased to announce that after reviewing 28 applications from 26 states, the Energy Department has selected five initial contenders to further explore building Nuclear Lifecycle Innovation Campuses,” Secretary of Energy Chris Wright said in a statement. “These campuses will be massive generators of economic growth, create thousands of high-paying jobs, and be crucial to unleashing America’s nuclear renaissance.”
Just last week, the Energy Department opened the door to nuclear projects sited on floating offshore platforms. It’s a novel idea for the U.S., but Russia launched its Akademik Lomonosov, a floating nuclear station, in 2019 in what is widely recognized as the world’s first real small modular reactor and only operating non-land nuclear plant. A new peer-reviewed study the World Nuclear Association conducted on the Rosatom-owned plant ranked it “on par with Russia’s top units,” World Nuclear News reported.
Trump’s permitting freeze for renewables projects started to thaw for solar in particular earlier this year as the administration faced mounting pressure to stop thwarting the fastest-growing source of power in a country increasingly starved for new and swiftly available sources of electricity. The easing, as my colleague Jael Holzman wrote, was also part of a legal strategy. Regardless of the reasoning, the thaw is continuing — and not just because of the literal heat dome pushing temperatures in the Southwest into the triple digits. On Tuesday, the Department of the Interior’s Bureau of Land Management announced plans to advance a solar project in the Nevada desert. The Mosey solar farm, which would produce enough power at maximum output for 200,000 homes, is now under evaluation at the agency’s Nevada office, the agency notified the Federal Register. The regulator plans to conduct an environmental analysis and a resource management plan tweak needed for a project in a utility corridor. E&E News credited the administration’s shift on this particular project to lobbying by the state’s Republican governor, Joe Lombardo.
The project is part of developer Clearway’s larger efforts in Nevada. Separately, the company has volunteered to scrap one of its other solar projects in favor of building a gas plant, Jael reported this week.
Yesterday, I told you the board of PJM Interconnection had scheduled an emergency auction to drum up 7 gigawatts of additional capacity to supply the electricity demand from data centers starting in 2028. It’s just one incremental way the nation’s largest grid system is “lurching toward reforms,” as my colleague Matthew Zeitlin wrote. It’s also inching toward more actual power infrastructure. On Wednesday, the developer Eolian Energy started construction on Flint Grid, a 1 gigawatt-hour storage project outside Columbus, Ohio. Located near a hub of data center and industrial power users, the Flint Grid project is “the first large-scale battery energy storage system to qualify for the PJM capacity market.” If it comes online in spring 2027 as promised on the project’s new website, it will represent more than half the new battery storage capacity in PJM’s line up for 2027 to 2028. The project is also the first grid-scale battery project permitted by the Ohio Power Siting Board and the largest in the PJM territory to date.
“There’s growing consternation about how the US can rapidly scale infrastructure to support America’s growing electricity demand, but not nearly enough conversation about how to use existing technology to unlock the wasted capacity that already exists on the grid,” Eolian founder and CEO Aaron Zubaty said in a statement. “This project requires hundreds of millions of dollars to construct, and we committed the necessary capital and resources years before today’s demand forecasts became headline news. As policymakers consider changes to competitive electricity markets, it’s critical that they avoid undermining the long-term investments already.”
Lithium production typically involves either mining hard rocks or extracting salts through brines. Both are water intensive processes with considerable environmental tolls. Scientists at Texas A&M University are now developing a new approach involving the deployment of tiny, fish-like swimming nanorobots that capture lithium ions from seawater. Backed by a $1 million Energy Department grant, it’s among more than a dozen projects the agency is supporting in a bid to bolster domestic critical mineral supplies. “Unlike traditional mining that digs up land or pumps brine from underground and requires massive amounts of energy, these autonomous micro/nanorobots move freely through seawater to harvest lithium with virtually zero infrastructure footprint,” Jingjing Qiu, one of the mechanical engineers leading the research, said in a statement.