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On EPA’s CO2 math, the British atom, and Ram’s reversal

Current conditions: A prolonged heatwave in Mississippi is breaking nearly century-old temperature records and driving the thermometer up to 100 degrees Fahrenheit again this week • A surge of tropical moisture is steaming the West Coast, with temperatures up to 10 degrees higher than average • Heavy rainfall has set off landslide warnings in every major country in West Africa.
The Trump administration asked a federal judge on Friday to withdraw the Department of the Interior’s approval of a wind farm off the coast of Maryland, Reuters reported. Known as the Maryland Offshore Wind Project, the $6 billion array of as many as 114 turbines in a stretch of federal ocean was set to begin construction next year. Developer US Wind — a joint venture between the investment firm Apollo Global Management and a subsidiary of the Italian industrial giant Toto Holding SpA — had already faced pushback from Republicans. The town of Ocean City sued to overturn the project’s permits at the federal and state levels. When the Interior Department first announced it was reconsidering the permits in August, Mary Beth Carozza, the Republican state senator representing the area, welcomed the move but warned in a statement the news site Maryland Matters cited that opponents’ campaign against the project, known as Stop Offshore Wind, “won’t stop fighting until the Maryland offshore wind project is completely dead.”
It’s all part of President Donald Trump’s widening “war against wind” energy that kicked off the moment he returned to the White House and issued an order halting approvals for new offshore and onshore turbines. If you read the timeline Heatmap’s Emily Pontecorvo neatly charted out earlier this month, you’ll notice how quickly the administration’s multi-agency crackdown on wind power expanded, particularly after the passage of the One Big Beautiful Bill Act on July 4. The industry is just starting to push back. As I reported in this newsletter two weeks ago, the owners of the Rhode Island offshore project Revolution Wind that Trump halted unilaterally filed a lawsuit claiming the administration illegally withdrew its already-finalized permits. US Wind said it intends “to vigorously defend those permits in federal court, and we are confident that the court will uphold their validity and prevent any adverse action against them.”

The Environmental Protection Agency on Friday proposed killing the long-standing program requiring thousands of facilities across the country to report the amount of heat-trapping greenhouse gas they release into the atmosphere every year. Since 2010, the government has collected the data on emissions from coal-fired plants, oil refineries, steel mills, and other industrial sites, which now represents what The New York Times called “the country’s most comprehensive way to track greenhouse gases.”
The decision could have grave consequences for carbon capture and storage. Some had hoped Trump’s vision of unleashing fossil fuels might spur more investment in the technology to capture emissions before they enter the atmosphere and recycle the gas for industrial use or store it in wells underground. But the mix of hardware, pipelines, and storage sites remains so underdeveloped that the EPA in June said it’s “extremely unlikely that the infrastructure necessary for CCS can be deployed” by the 2032 deadline a previous Biden-era rule had set for equipping fossil fuel plants with carbon capture technology, E&E News reported at the time. Eliminating the Greenhouse Gas Reporting Program hampers all the federal programs that rely on its data. That includes the carbon capture subsidy, known by its tax code section head 45Q, which Republicans recently dialed up in Trump’s reconciliation law. The rules for claiming the tax credit include filing technical details to the EPA’s emissions program. When Heatmap’s Robinson Meyer reached out to the EPA to ask whether gutting the database posed a setback for companies looking to claim the credits, an agency spokesperson pointed him to a line in Friday’s proposal: “We anticipate that the Treasury Department and the IRS may need to revise the regulation,” the legal proposal says. “The EPA expects that such amendments could allow for different options for stakeholders to potentially qualify for tax credits.”
In a flurry of deals on Sunday night, at least a half-dozen U.S. nuclear companies unveiled plans for new facilities in the United Kingdom as Washington looks to fill order books for its fuel makers and next-generation reactor companies and London looks to ramp up its atomic energy output. Among the deals:
The announcements add to what Heatmap’s Katie Brigham called the “nuclear power dealmaking boom.” In a recent paper, policy experts at the center left think tank Third Way concluded that “the U.S. and U.K. are well-suited for further collaboration on nuclear, specifically SMR and Gen IV technologies,” and “could reduce deployment costs through learning rates and commissioning larger order books.”
Nearly a decade of bureaucratic tinkering at the Federal Energy Regulatory Commission came to an end so abruptly it’s most succinctly captured in onomatopoeia: “Womp,” Harvard Law School’s electricity law program director Ari Peskoe wrote on X. “With one paragraph, FERC ends a 7.5-year effort to update its approach to reviewing proposed interstate gas pipelines.” The measure would have implemented a new formula for assessing the value of new interstate gas lines that would have weighted the environment more heavily than the existing methodology, which was written in 1999. But the push to modernize the criteria after three decades “was never a serious effort,” former FERC Chairman Neil Chatterjee posted on X. “We got bullied into starting it and put on a show for years to hold protesters at bay. Just being honest. R and D led @ferc majorities both faked it.”
Ram has canceled its electric pickup truck, long expected to be a competitor to the battery-powered versions of the Ford F-150 and Chevrolet Silverado, InsideEVs reported. Parent company Stellantis said it would discontinue the 2026 battery-powered Ram 1500 REV “as demand for full-size battery-electric trucks slows in North America.” Rivals such as GM have seen a boom in EV sales in recent months, that is likely driven by the law Trump signed that rapidly phased out federal tax credits after this month. As Heatmap’s Matthew Zeitlin wrote recently, August turned out to be the best month for EV sales “in U.S. history, with just over 146,000 units sold, comprising almost 10% of total car sales that month.” Ford is still investing in what is billed as a Model T moment for EV construction. And, as I have reported here in this newsletter, Tesla’s plunge in popularity — even with former customers — has opened up more of the EV market to other vendors.
Though Ram’s all-electric pickup truck turned out to be a non-starter, its extended-range battery electric truck, formerly known as the Ramcharger, will now take on the 1500 REV moniker with a 2026 launch date. As Heatmap contributor and Shift Key podcast cohost Jesse Jenkins wrote when the Ramcharger was announced, “The economics and capabilities of a range-extended EV thus make a lot of sense, especially for massive vehicles like the full-size trucks and SUVs so many Americans love. And they squash any concerns about range anxiety that might give buyers pause.”
Scientists have long sought an economical way to harness renewable power from waves. But as Julian Spector wrote in Canary Media: “The first rule of wave power startups is that they always fail. But a plucky company called Eco Wave Power is doing its best to prove that rule wrong, and it just notched an important win in Los Angeles.” The company this month installed a 100-kilowatt system on a concrete wharf in the port of Los Angeles, with seven steel floaters affixed to a central structure that bobs in the waves, “building up hydraulic pressure that gets converted to electric power by machinery in shipping containers on shore.” If the pilot pans out and Eco Wave gets a chance to bid on a larger area of the port, the technology could — at least in theory — generate power 90% of the time, supplying electrons at a capacity factor higher than almost any other energy source besides nuclear.
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Talking with SVP of strategy Sarah Jewett about the competition, expansion plans, and how to get more Americans informed and onboard.
Just three years ago, enthusiasm for geothermal energy was lukewarm at best. In a sign of just how marginal it seemed, the firehose of federal money directed at clean energy investments under the Biden administration contained just $84 million for geothermal, specifically for next-generation technologies. By contrast, the next-generation nuclear industry received roughly 40 times more.
Geothermal electricity generation uses heat from the Earth’s molten core to spin turbines that generate carbon-free, 24/7, renewable energy — a pretty attractive offer in today’s age of rampant climate change and soaring demand. Though the technology has been in use since 1913, it’s been stymied since then by the industry’s dependence on finding rare and unique underground reservoirs of hot water.
Then in 2023, a little-known startup backed by Bill Gates, among others, achieved a breakthrough at a pilot project in Nevada, showing that fracking technology could be used to harvest energy from hot, dry rocks, which can be found virtually anywhere in the world.
Fervo Energy’s announcement hit the geothermal industry’s smoldering embers like a splash of gasoline. Investors saw a reliable new source of carbon-free electricity that could tap into existing oil and gas supply chains and workforces and clamored to put their money into the startup, which had raised roughly $1.5 billion from private investors prior to the IPO. As the need for more energy to power data centers for artificial intelligence has grown, that interest has only intensified. Case in point: The company actually upsized its initial public offering on the Nasdaq stock exchange this week.
The money from the IPO, the company said in its initial filing with the Securities and Exchange Commission, would go to Fervo’s flagship installation at its debut 500-megawatt Cape Station plant in Utah. When all was said and done after the company’s Tuesday debut, it had netted nearly $1.9 billion — about 50% more than the initially planned $1.3 billion. When trading picked up again on Wednesday, the price soared more than 30%, to over $36 per share.
Late Wednesday afternoon, I spoke to Sarah Jewett, Fervo’s senior vice president of strategy, to discuss the IPO and what’s next for the company. The transcript of our conversation, conducted over Zoom, has been lightly edited for clarity and length.
Congratulations, Fervo has just made quite the stock market debut. Just a few days ago, the company upsized its initial public offering. Then yesterday, when the FRVO ticker officially launched at the Nasdaq, you ended up raising nearly $1.9 billion, beyond the $1.3 billion you initially anticipated. You must be feeling pretty good today.
I’m teeing you up for the pun here, Alexander: Geothermal is so hot right now. The IPO is not a finish line for Fervo. It is a financing milestone that facilitates the build out of more clean, firm, reliable, affordable energy. That is what we are most excited about as we ring the bell in Nasdaq. As we celebrate, we are more excited than anything to get back to work, to put clean megawatts in the grid.
Well then, let’s drill down on that. What were you seeing from investors before the IPO?
Investors, when we went around to sell, sell, sell , they were familiar with the need for energy. They were familiar with what’s happening in tech and AI. They were familiar with the existing solutions for power. They saw us as a new entrant into the scene that is highly capable of bearing the weight of resolving this intense energy crunch. Because of that, as we sold our story over the IPO roadshow, we just saw insane demand and decided it was the right idea to upsize the round.
Beyond the big player in conventional geothermal, Ormat Technologies, there haven’t really been many pure-play options in the retail market for people who want a piece of the action more broadly within geothermal. Where do you draw the line between where investors are buying into Fervo, specifically, and where they are buying into geothermal, generally?
These are really sophisticated investors. It’s overly reductive to say they’re just investing in us because we are a leading contender in an interesting industry to them. These are sophisticated investors who have vetted our technology, our performance, our execution to date, how we think about growth. They really bought into that story, specifically, as being a story that they believe to have real sustainability.
Where do you see the biggest potential competition? Do you think it will come from an incumbent player who makes a pivot into the next-generation market? Or do you think one of these other startups in the mix such as Sage Geosystems or XGS Energy or Quaise Energy could find similar success to Fervo?
We’re driving a rising tide that should lift all boats. I’m not going to publicly place bets on who I think will be the closest follower. But I’m hopeful that we will start to see more successful competitors in the years to come. The market that we’re addressing is massive right now. Because of that, we should see enhanced competition going forward. In some ways, we would be disappointed if that weren’t the case. We have developed a technological solution that is really meaningful. It should encourage others to come try to do the same.
Fervo is really differentiated in the years of execution that we have under our belt. At this point in time, we’ve drilled 40 horizontal geothermal wells. That is a huge differentiating factor at this point in time. The demand is here now. We are well positioned to meet that demand in a way that is rapidly scalable. We are in the right place at the right time.
We like to say internally that, coming to this point, we didn’t have to contend with Fervo. Now competitors will have to contend with Fervo. We obviously believe in the geothermal energy industry, which is why we’ve been so public with publishing our data and talking about what we’re trying to do. But we do really think that we have a substantial lead on the market, just in execution. And then, of course, we have immense amounts of IP and data and learnings to go with it.
Do you plan for the primary business to remain electricity production? Do you foresee going into industrial heat, or district heating in Europe?
We will pursue all of those as business lines in the future. Right now, we are proving ourselves to be uniquely good at delivering power projects. That will be our focus for the near term.
I know you have been focused on the U.S. Where are you looking internationally?
The U.S. is a substantial market at this point in time, so while we do plenty of business development outside of the United States, right now we’re focused on developing at home.
How long will it take for the company and for the industry more broadly to start developing overseas projects in a big way?
We’re close to that already. It’s just a question of what is smart from a business model perspective, and when the timing is right. I’m probably not at liberty to say right now when the timing will be right to really lean into a thriving export side of the business.
If you had to estimate, what would you say is the share of your investors now who are classic energy investors — the types of people who would have been buying into or did buy into shale — versus the share you think are motivated by climate concerns and the clean energy potential of what geothermal is doing? Obviously I realize there’s plenty of overlap. But if you had to discern between those camps, where would you say you’re more indexed?
I would say the majority of energy sector specialists who are investing in this deal are either technology agnostic or are focused on the clean energy side of the business. We do have some marquee shale investors that we will be bringing on as part of the public offering that we’re really, really excited about. So, it’s probably a healthy mix.
Is the shale industry the best analog for how you expect geothermal to scale?
Certainly on the subsurface side it is the closest analog to what we’re doing. We are taking technology that was developed for the shale industry in the subsurface, then we’re deploying it in a similar fashion, which is just over and over and over repeated wells to ensure that we are learning at a really rapid rate and then achieving cost reduction on a learning curve in a single basin. That is a big part of our cost reduction story.
The other thing that we talk a lot about internally is bringing a manufacturing mindset to geothermal energy. It is an industry that has historically been much more akin to a construction industry, building bespoke projects that are tailored for a bespoke commercial need. That is not what we’re trying to do. We’re trying to build a much more scalable business. In order to build a scalable business, you have to establish what is the unit that you are standardizing around and iterating upon. We intend to standardize our design, and iterate and optimize off of a standardized design to allow us to move really fast and to get a lot better, to pull costs out of the business and to be able to scale.
Given how much faster you guys are coming to market, obviously, you have an advantage here over some of the new nuclear technologies being promoted right now. Do you think geothermal is mostly going to eat into the potential market that those could serve? Or do you see nuclear as having different use cases than what geothermal can do?
It’s an overlapping use case, for sure. We don’t talk a lot about eating market share, because the pie is really, really large right now.
How soon before we can anticipate building enhanced geothermal systems on the East Coast and in the Northeast, places where the subsurface heat is not as easily accessible as in the Southwest?
We like to remind people that the demand in the West is massive right now. Probably 18 months ago, we weren’t having as productive conversations with hyperscalers about siting the West as we are today. Today we are having tons and tons of conversations about siting and co-locating alongside geothermal projects in the Western U.S. So the market is really big. We like to mention that just to remind people that expansion is not the only marker of success here.
That said, there is hot rock everywhere, it’s just a question of how deep that hot rock is. We, through our standardized and iterative and repetitive approach in the subsurface, are meaningfully driving cost out of the subsurface, making depth much more of an economic question. If it is more expensive to drill to a certain depth but you already pulled an immense amount of cost per foot out of your drilling, then temperature at depth becomes more accessible even when it’s deeper.
Because drilling is just a portion of the capex of these projects, and a power plant doesn’t care whether it’s located in the West or the East, we basically think that we can move into the Eastern U.S. sooner than we probably had originally thought. It is our goal to do that sometime in the next decade.
In the scant polling I have seen on partisan attitudes on geothermal, most American voters are unaware of it, but among those who are, there seems to be a pretty close match to nuclear in terms of emerging as a rare purple form of energy with closely aligned support between Democrats and Republicans. As you grow, how are you thinking about maintaining that broad appeal and reaching more of those Americans still in the dark?
We benefit from being in an incredibly bipartisan seat right now, and that has been so helpful for our growth and development and is very important to us to maintain going forward. There’s no reason why it shouldn’t be bipartisan. It is a story that is relatable to all. We are highly adjacent to the oil and gas supply chain and oil and gas workforce. We are reliable energy. We are driving towards affordability. We are a clean energy industry with no operating emissions. And really, more than anything, we’re trying to build in a sustainable fashion. We’re trying to deliver projects the right way. It’s something that we have really been able to gain support on both sides of the aisle.
Obviously, that’s been hugely beneficial as we think about extending tax credits. Geothermal energy benefited from increasing tax credits under the Inflation Reduction Act, under President Biden. Then President Trump preserved geothermal energies tax credits in the One Big Beautiful Bill Act. That was hugely helpful to Fervo’s early development.
As we look to bring the cost of the technology down, we hope to continue educating a large group of stakeholders about this technology going forward, and continuing to bring people along with the story, no matter which side of the aisle they sit on.
The Secretary of the Interior said he “absolutely” planned to appeal a ruling that lifted blocks on wind and solar approvals.
The Trump administration is not backing down from its discriminatory policies for approving wind and solar projects. Interior Secretary Doug Burgum testified to Congress on Wednesday that his agency would appeal a recent district court ruling blocking it from enforcing these policies.
“We reject the whole premise,” Burgum said during a House Natural Resources Committee hearing.
Since Trump took office, the Interior Department has issued a series of memos and secretarial orders that systematically disadvantage wind and solar projects. Last July, it issued a memo requiring that nearly all approvals in the wind and solar permitting process be subject to additional reviews by the secretary’s office. A subsequent order required the agency to prioritize permitting projects with greater energy density, meaning ones that produce more power per acre of land, and deemed wind and solar “highly inefficient” compared with coal, nuclear, and natural gas projects.
The policies amounted to an effective freeze on wind and solar development on public lands, while also stalling projects on private lands that require federal consultations, affecting hundreds of clean energy projects. By the end of last year, Democrats saw no point in negotiating on permitting reform if the executive branch could simply make up its own permitting rules. They insisted on limits to executive power before they’d agree to a deal.
Around the same time, a coalition of clean energy groups, including the Clean Grid Alliance, Alliance for Clean Energy New York, and the Southern Renewable Energy Association, challenged the agency’s actions in the U.S. District court for the District of Massachusetts. The Interior’s permitting policies “place wind and solar technologies into second-class status without providing any rational justification for such disparate treatment or drastic policy shifts — unlawfully picking winners and losers among energy sources, contrary to Congress’ intent,” the lawsuit claimed. The groups argued the policies were arbitrary and capricious, in violation of the Administrative Procedures Act. In April, Judge Denise Casper sided with the plaintiffs, putting a temporary injunction on the agency’s wind and solar-hobbling memos.
During Wednesday’s hearing, Representative Susie Lee of Nevada told Burgum that his policies have “created a total permitting mess” in her sunny home state, and asked him what the immediate impact of the court’s order was within his agency. When Burgum responded by denigrating the judge’s decision, Lee asked if he was planning to appeal the order.
“Yeah, absolutely,” he said, asserting that “the idea that a single judge could decide” how the agency conducts permitting “is absurd.”
At the end of her questioning, Lee reaffirmed that the July 15 memo was the single thing stalling a permitting reform deal in Congress. “If you would just rescind that memo, we could get permitting reform passed this Congress, and we can start to talk about permitting all forms of energy.”
Later in the hearing, Burgum also defended another of the administration’s controversial actions regarding renewables. California Representative Dave Min questioned Burgum on his deal to pay the French energy company Total nearly $1 billion to walk away from its offshore wind leases. Was that an appropriate use of money, Min asked, considering so many Americans were struggling with high energy bills? Burgum rejected the premise, asserting several times that the agency merely “refunded” Total’s money.
Current conditions: The heat wave driving temperatures into the triple digits in the Southwest is moving northward to the Mountain West • Temperatures in Timbuktu are forecast to hit 115 degrees Fahrenheit as Mali devolves into a civil war between the government and Islamist militants • Malé, the Maldives’ densely packed island capital often called the Manhattan of the Indian Ocean, is facing days of intense thunderstorms.
Ever since South Korea built the United Arab Emirates’ first nuclear plant as close to on time and on budget as any democratic country has come in recent years, the East Asian nation has been considered one of the only real rivals to China and Russia on construction of new fission reactors. That’s in no small part because many American engineers whose projects dried up in the late 20th century took their skills there, building out more than two dozen commercial reactors and helping to vault Seoul to the vanguard of technological civilizations. Recently, Washington has wanted to re-shore that nuclear knowhow and learn the new project management tricks perfected by South Korea’s state-owned nuclear firm. But Korea Hydro & Nuclear Power’s flagship reactor mirrors the technology covered under the U.S. nuclear giant Westinghouse’s intellectual property. The yearslong standoff between the two companies came to a head last year with a global settlement that, in a controversial move, barred the Koreans from competing against Westinghouse on projects in Europe or North America. Still, the Trump administration has been trying to court Korean investment in the U.S. nuclear sector.
Now it’s coming closer. On Tuesday, KHNP inked a memorandum of understanding with the nuclear division of U.S. utility giant Southern Company to work together on engineering atomic power stations. It’s not a financing deal. Signed at KHNP’s headquarters in Gyeongju, the companies said the partnership would involve technology exchanges, workshops, and sharing best practices. “This agreement is expected to serve as an opportunity for KHNP engineers to expand their horizons globally and provide a growth chance for the domestic engineering system to take a leap forward,” Kim Young-seung, the head of KHNP’s engineering division, World Nuclear News. “We will continue to do our utmost to complete the Korean-style engineering system through close cooperation with overseas operators and international organisations.”
The Environmental Protection Agency has come up with a new way to speed up construction of data centers, power plants, and other industrial facilities: Let them start building before they obtain required federal air permits. The proposal would “bring flexibility to building non-emitting components or structures,” including cement pads and wiring, piping, and support structures. “Today’s proposal works to provide solutions to issues that have held up critical American infrastructure and advance the next great technological forefront,” EPA Administrator Lee Zeldin said in a statement. “Through commonsense permitting reform, the Trump EPA is fixing the broken system of government interference, while continuing to uphold our core mission to protect human health and the environment.”
Surging demand and shortages of raw materials are pushing lead times for high-capacity electrical transformers to as long as four years, PricewaterhouseCooper analysts said at a Reuters event this week. Demand for step-up transformers, which increase the voltage of electricity as it travels across power lines, increased by 274% between 2019 and 2025, while demand for substation transformers soared by 116%. Prices for essential components, meanwhile, have jumped by roughly 80% in five years. As a result, according to PV magazine, some firms are now paying premiums for production slots on projects that aren’t even finalized yet, while others buy refurbished as a stopgap until newer units arrive.
Transformers aren’t the only grid equipment attracting investment. Just this morning, TS Conductor, a manufacturer of advanced conductors that can bolster the capacity of existing power lines, announced the grand opening of its newest factory in South Carolina. The $134 million facility is now “poised to strengthen U.S. domestic supply chains as utilities work toward building a stronger, higher-capacity, more-efficient power grid — all with the speed that American industry needs and the affordability that American ratepayers deserve,” the company said.
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The Trump administration has removed the acting head of the Federal Emergency Management Agency, replacing the political appointee with a 30-year agency veteran who held senior positions in several previous administrations. On Tuesday, E&E News reported that the exit of Karen Evans, a political appointee put in charge of the embattled agency in December, would be the third such departure since President Donald Trump returned to the White House. Her temporary replacement as acting administrator is Robert Fenton, who began work as a regional administrator in 1996 and held the acting chief job twice under the first Trump and Biden administrations — for six months in 2017 and four months in 2021. “I know this year has been challenging for many across the agency,” Fenton wrote in a staff memo Tuesday, a copy of which the newswire obtained.
FEMA has struggled under Trump. As I told you last summer, the agency cracked down aggressively on internal dissent from staffers. Meanwhile, the funding shutdown at the Department of Homeland Security, where FEMA is housed alongside Immigration and Customs Enforcement, “starved” local disaster responses, Heatmap’s Jeva Lange reported in February..
Alsym Energy, as Heatmap’s Katie Brigham reported last year, “thinks it can break the U.S. battery manufacturing curse.” And not just by besting the incumbents already producing the market’s lithium-ion packs, but actually commercializing a whole new type of battery chemistry that instead relies on cheaper and far more abundant sodium as the main energy carrier. On Tuesday, the Massachusetts-headquartered startup inked a deal with the renewable developer Juniper Energy to deploy 500 megawatt-hours of Alsym’s battery systems in California. The deal, the companies said in a press release, “marks a significant shift away from fire-prone lithium-ion dependencies, prioritizing safety, domestic production, and operational efficiency in some of the United States’ most demanding climates.”

If you thought building batteries or transformers was tricky, how about an electricity distribution network in space? That’s what Star Catcher Industries is promising to do. The Jacksonville, Florida-based startup said Tuesday it had raised $65 million in an oversubscribed Series A round. The investment — led by venture capital firms B Capital, Shield Capital, and Cerberus Ventures — brings Star Catcher’s total capital raised so far to $88 million. Founded less than two years ago, the company is developing space-based infrastructure that can deliver electricity on demand to satellites and spacecraft using optical power beaming, a wireless technology involving high-intensity laser light. “This investment underscores the conviction that orbital infrastructure is now as fundamental as terrestrial infrastructure,” Andrew Rush, co-founder and chief executive of Star Catcher, said in a statement. “Every major application driving the space economy — connectivity, computing, security, sensing — is power-limited today. Star Catcher is lifting that ceiling — making it possible to build in orbit at the scale the next century of life on Earth will demand.”
Editor’s note: This story has been updated to correct the location of Terrapower’s isotope plant.