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Reading between the lines of Governor Kathy Hochul’s big nuclear announcement.

With New York City temperatures reaching well into the 90s, the state grid running on almost two-thirds fossil fuels, and the man who was instrumental in shutting down one of the state’s largest sources of carbon-free power vying for a political comeback on Tuesday, New York Governor Kathy Hochul announced on Monday that she wants to bring new, public nuclear power back to the state.
Specifically, Hochul directed the New York Power Authority, the state power agency, to develop at least 1 gigawatt of new nuclear capacity upstate. While the New York City region hasn’t had a nuclear power plant since then-Governor Andrew Cuomo shut down Indian Point in 2021, there are three nuclear power plants currently operating closer to the 49th Parallel: Ginna, FitzPatrick, and Nine Mile Point, which together have almost 3.5 gigawatts of capacity and provide about a fifth of the state’s electric power, according to the nuclear advocacy group Nuclear New York. All three are now owned and operated by Constellation Energy, though FitzPatrick was previously owned by NYPA.
Hochul’s announcement did not specify a design or even a location for the new plant, but there were some hints. The press release describes “at least one new nuclear energy facility with no less than one gigawatt of electricity.” While 1 gigawatt is the capacity of a Westinghouse AP1000, the large, light-water reactor built at Plant Vogtle in Georgia, the explanation seems to leave room for the possibility of multiple, smaller plants.
Then there was where Hochul chose to make the announcement, in front of the monumental Robert Moses Niagara Power Plant, which, when it was built in 1961, was the largest hydropower plant in the western hemisphere. The release includes an intriguing reference to the country just on the other side of the river, saying that the plan “will allow for future collaboration with other states and Ontario, building on regional momentum to strengthen nuclear supply chains, share best practices, and support the responsible deployment of advanced nuclear technologies.”
To me at least, all this points to the possibility that we could actually be talking about a small modular reactor, specifically GE Hitachi’s BWRX-300, one of a handful of SMR designs vying for both regulatory approval and commercial viability in the U.S. Canada’s Ontario Power Generation recently approved a plan to build one, with the idea to eventually build three more for a total 1.2 gigawatts of generating capacity, i.e. roughly the amount Hochul’s targeting. The Tennessee Valley Authority, America’s largest public power provider, is also looking at building a BWRX-300. Whichever is completed first will become the first operating SMR in North America. (A NYPA spokesperson told me there has been “no determination on technology yet,” nor on location.)
There are a few policy conclusions we can draw from the announcement, as well, one being that Hochul has determined New York’s energy needs do not match up with its current, renewables-heavy energy roadmap set out more than five years ago. The 2019 Climate Leadership and Community Protection Act (signed by Cuomo) set out a goal for New York to supply 70% of its electricity with renewables by 2030; about a year ago, the Hochul administration said that it would likely not meet that target, which has only slipped farther from view under the Trump administration’s assault on the offshore wind industry, which was supposed to anchor the state’s renewables supply — especially near New York City, where land is scarce but shoreline is plentiful.
The new nuclear plan also has a distinctively upstate appeal, which is not surprising considering Hochul’s Buffalo roots. (She said during the announcement that she had visited the Niagara plant, which is just outside Buffalo, “so many times.”) The upstate power grid is less carbon intensive than the downstate grid and is due to receive much of the wind and solar development necessary to meet New York’s climate goals. But the northern reaches of the state are also more politically conservative and more rural, making it both an inviting target for renewables development and a potential wellspring of opposition.
“The fundamental challenge of wind, solar, and storage across upstate is that it’s subject to a lot of local opposition,” Ben Furnas, who served as director of the Mayor’s Office of Climate and Sustainability in New York City, told me. “Something that’s remarkable about nuclear power is that the land footprint is more modest.” (The NYPA spokesperson said that NYPA’s own plans for renewable development were not being altered.)
Nuclear power plants can also be economic lifelines — especially in rural areas — due to the permanent, high-paying jobs they support and direct economic benefits to the surrounding communities.
“There’s a lot of real win-win deals to be struck,” Furnas said. “It’s not an unknown, radical, alien notion. Plenty of people work in those plants and live near them. It’s a very different politics than what was happening in Hudson Valley around Indian Point,” where environmental groups like Riverkeeper (long associated with former Cuomo associate and current Secretary of Health and Human Services Robert F. Kennedy, Jr.), had worked for years to shut down the plant.
Monday’s nuclear announcement included supportive quotes not just from the usual suspects of state energy and environmental officials and union leaders, but also from the chief executive of Micron, which is set to start working on a semiconductor fabrication facility in the central part of the state. “A critical factor in the success of the semiconductor ecosystem is access to affordable, reliable energy. We commend New York State for advancing an all-of-the-above energy strategy — including nuclear power,” Micron CEO Sanjay Mehrotra said in a statement.
“To power this one facility, Micron is going to need so much power — so much incredible power — and there’s only one commercially viable option that can deliver that much clean, renewable, reliable power, and that’s what’s been operating in New York for decades: nuclear energy,” Hochul said Monday. “Harnessing the power of the atom is the best way to generate steady zero-emission electricity, and to help this transition.”
The mainstream environmental groups that supported the renewables-focused 2019 law (many of which either oppose nuclear power or are at best neutral towards it) were nowhere to be found during today’s announcement, however, and the plan has already drawn skepticism from some progressives.
Liz Krueger, a Manhattan Democrat who chairs the New York state senate’s finance committee, said in a statement that she had “significant concerns” about the nuclear plan, including its cost effectiveness, how to dispose of nuclear waste, the time required to site and build the project, whether other renewable options could fill the gap instead, and whether it has the “full informed consent from impacted communities.”
“I have yet to see any real-world examples of new nuclear development” that have met all these concerns, Krueger said. New York has a checkered history of nuclear development: Long Island ratepayers spent decades paying for the completed but never operational Shoreham nuclear plant, whose costs ballooned by billions of dollars as construction dragged on from 1973 to 1984.
But the announcement comes at a time when the federal regulatory and tax balance is tipping toward nuclear regardless. The Trump administration issued a fleet of executive orders looking to speed up nuclear construction and regulatory approvals, and Senate Republicans’ version of the mega budget reconciliation bill includes far more generous treatment of nuclear development compared to wind and solar.
Public Power NY, an advocacy group that supports renewables development by NYPA, expressed skepticism about the nuclear plan in spite of these supportive signs.
“Hochul’s decision to step in based on promises from Donald Trump shows just how unserious she is about New Yorker’s energy bills and climate future. NYPA should be laser focused on rapidly scaling up their buildout of affordable solar and wind which is the only way to meet the state’s science-based climate goals and lower energy bills,” the group said in a statement.
For his part, Furnas was more pragmatic. “It’s really good that Governor Hochul is putting everything on the table when it comes to ensuring reliable generation for New York State and to meet clean air and carbon emission goals,” he said. “It would be foolish and unfortunate to not look at everything she can.”
Hochul herself appears determined to push through.
During the announcement, referring to the buzzing power plant behind her, Hochul said that “belief in sometimes impossible ideas” can bring people together. The power plant currently standing on that site was built in less than three years after an earlier plant on the Niagara collapsed. New nuclear power in New York may have seemed impossible, but it might still happen.
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The seed-stage startup is eyeing a Series A after successfully enriching lithium and hydrogen isotopes.
While most coverage of the buzzy fusion energy industry — including my own — tends to focus on the startups promising to build commercial reactors within the next decade, a whole host of supporting industries will also need to mature in order to make that long-held scientific dream a reality. Isotope production is one of the biggest. No matter a company’s technical approach to fusion, it likely demands hydrogen and lithium isotopes — the former to fuel reactors, and the latter to breed more of that fuel.
That’s where Marathon Fusion comes in. The San Francisco-based seed-stage startup is developing isotope separation technology for two key purposes: recycling tritium — an extremely rare hydrogen isotope — from reactor exhaust so it can be reused as fusion fuel, and enriching lithium-6, which is needed to breed new tritium. On Thursday, the company announced that it succeeded in using its plasma centrifuge technology to enrich lithium-6 and hydrogen isotopes in the lab. (It can’t yet test the tech on actual tritium, which is expensive, radioactive, and tightly regulated by the Nuclear Regulatory Commission, so Marathon is validating its separation physics using the non-radioactive proxies deuterium and protium.) Marathon now plans to raise a Series A based on the results.
“People have wondered for a very long time when fusion is going to come, and everyone’s waiting on the big scientific announcements,” Marathon’s CEO Kyle Schiller told me. But while the industry waits for those breakthroughs, he argued, it’s high time to start commercializing the infrastructure fusion will need to become an actual commercial industry. “Ultimately, what we’re doing is reactor agnostic. Everyone’s going to need it.”
In the near term at least, most fusion companies plan to use deuterium-tritium plasmas to power the fusion reaction. But the process is inherently inefficient — only a small fraction of the fuel actually fuses in the reaction, while the rest gets expelled, even though it still contains valuable, unburned tritium that can be captured and reused.
Today, neither tritium nor the lithium-6 needed to make more of it are produced at anything close to the scale even a single commercial fusion reactor would require to get up and running. And existing isotope separation technologies — largely designed for small-volume defense programs and experimental reactors — aren’t sufficient to bridge the gap.
“When you have a single fusion power plant, that’s going to need about 1,000 times more lithium than anyone is producing today in any country,” Schiller told me, referring to lithium-6. “It would be totally prohibitive to build a fusion power plant at those economics.”
And while it’s at least possible to produce enough of this isotope to supply a future fusion industry by enriching lithium mined from rock, tritium presents a more fundamental problem. Because it’s radioactive and decays relatively quickly, it doesn’t occur naturally in meaningful quantities. Today it’s produced commercially as a byproduct of some fission reactors, but that supply amounts to just a few kilograms per year. A single 1-gigawatt commercial fusion reactor, by contrast, would need an estimated 56 kilograms annually. Meeting that demand will require fusion companies to breed their own tritium inside the reactor, a process that involves fusion-generated neutrons hitting lithium-6 nuclei, splitting them into tritium and helium.
It will also necessitate recycling the substantial amount of tritium that passes through the reactor without burning up. That’s where Marathon’s plasma centrifuge comes in. Centrifuges themselves are nothing new — engineers have used them for decades to separate uranium isotopes for nuclear fuel, spinning the gas at such high speeds that isotopes with different masses separate. Plasma centrifuges work on the same principle and have been studied since the Manhattan Project, but no one has yet successfully commercialized the approach for lithium and hydrogen.
Part of the reason is that, until recently, there simply wasn’t much demand for these isotopes. But the raw materials also present a physics challenge: Lithium and hydrogen isotopes have very similar masses. Separating them thus requires spinning the plasma so rapidly that, historically, the resulting heat has undermined the separation process itself. To address this, Marathon’s proprietary centrifuge tech uses a “partially ionized” plasma, in which some atoms have been stripped of their electrons while others remain neutral. The company says this configuration allows the centrifuge to operate at lower temperatures.
The materials testing lab Covalent has certified Marathon’s lithium-6 enrichment. The company hasn’t had its hydrogen separation results independently verified, though an MIT nuclear engineering professor has reviewed the device’s design. As a participant in ARPA-E’s Vision OPEN program, which solicits and supports ambitious energy projects, Marathon has also presented its hydrogen separation methodology and results at the ARPA-E fusion programs meeting in June.
Now, Schiller told me, the challenge is scaling up the technology’s core systems. “We need bigger magnets, better cooling, bigger power systems, and so that’s a buildout that’s going to take time and more capital,” he said. “But as far as the science is concerned, we feel like it’s at the point where we’re ready to make those kinds of commitments.”
Marathon is now looking to raise capital to build its first commercial pilot facility, with the goal of reaching full-scale production by 2029. Schiller told me the company expects its first full-scale facility to produce tens of tons of lithium-6 per year — enough, he says, to fuel a new gigawatt-scale fusion plant roughly every two years. Marathon also plans to recover and repurpose about 560 kilograms of tritium annually — roughly the amount that cycles through a 1-gigawatt reactor’s fuel system each year, most of which exits in the reactor’s exhaust without ever fusing.
Once fusion reactors are operating at scale, Marathon has a few other tricks up its sleeve. The startup also plans to build an “isotope production” business, using the copious volume of high-energy neutrons generated by fusion to manufacture valuable isotopes. The company made headlines last year with its claim that fusion-generated neutrons could transmute mercury into an unstable isotope that eventually decays into gold — potentially doubling a fusion reactor’s economic output (and proving the old alchemists right). But that work is still theoretical, based on computer simulations rather than peer-reviewed or experimentally validated work.
Marathon certainly has plenty to keep it busy in the near term, though. “There is a really amazing opportunity right now to say, look, the fusion supply chain is ready to go. We can start scaling up,” Schiller told me. “The science will progress in parallel, and we really want to land this together — not wait another 10 years after scientific results come in.”
Current conditions: Temperatures in Sicily and southern Italy are approaching 100 degrees Fahrenheit as a heat dome settles over the north-central Mediterranean • After pounding Okinawa and injuring two people on Japan’s remote southern islands, Typhoon Saudel is barreling west toward China • A geomagnetic storm known as a coronal hole could create a visible aurora from New York to Idaho, causing minor disruptions to technological devices such as GPS.

It’s like something out of an apocalyptic disaster film. From a camera situated on a cliffside overlooking the Rasuwagadhi border checkpoint in a valley between Nepal and Tibet, you watch as several — then dozens — of people start running away from the building. Birds fly across the screen in the same direction. Finally, after a few seconds, you see what they’re trying to escape: A giant wall of gray, muddy water crashing into the roughly six-story building like an ocean wave against a sand castle. In other videos, cars, trees, and homes disappear under the roar of a river of mud and rocks. Goliath boulders roll like basketballs. Men run for their lives. An avalanche on the Chinese side of the border “triggered a wall of water with no warning,” wrote The Kathmandu Post, an English-language daily in the Nepali capital, declaring this “one of Nepal’s deadliest disasters in decades.” By Thursday morning, the death toll counted at least 332, with hundreds more people still missing. Nepal’s disaster authority told the Indian broadcaster NDTV that a “chunk of snow and rock broke off near a glacier zone” on the border and either “fell into a glacial lake or blocked the river channel” resulting in a surge that swelled into a wave of glacial ice, meltwater, and debris. While initial reports suggested the avalanche started with an earthquake, a U.S. Geological Survey analysis found that the avalanche itself set off a magnitude 5.2 landslide.
Last month the Federal Communications Commission banned the use of new types of foreign-made inverters, the equipment needed to patch solar panels and batteries onto the grid, citing the need to protect the U.S. artificial intelligence buildout from Chinese sabotage. Now the White House is stepping in to block foreign imports of yet more types of grid equipment. In an executive order Wednesday, President Donald Trump said that “continued United States reliance on foreign sources of bulk-power system electric equipment with these potential national security vulnerabilities also creates a supply chain vulnerability that could eliminate the supply of these products in the United States as a result of disruptions in international trade.” In particular, the order will affect transformers, which are facing a years-long backlog as manufacturers struggle to keep up with demand from both the data center buildout and repairs to the grid after extreme weather mangles power equipment. The Biden administration had sought to increase the energy efficiency standards for transformers, paralyzing manufacturers who opposed the regulation and could not make investments into new assembly lines to meet surging demand until the fate of the rule was resolved. The Biden-era Department of Energy ultimately withdrew its proposal. While the Trump administration policy now will further protect those domestic factories, the import restrictions could, in the meantime, make obtaining the equipment primarily made overseas more difficult.
The Trump administration is set to speed up permitting reviews for oil and gas drilling in the Arctic. On Wednesday, Public Domain broke news that the Department of the Interior is planning to publish a categorical exclusion to the National Environmental Policy Act “that would make it easier for the oil and gas industry to conduct seismic surveys, obtain rights of way, and drill new exploration wells” in the National Petroleum Reserve in Alaska, a nearly 36,000-square-mile area on the continent’s northern Arctic Ocean coast.
The proposal, which the Interior Department confirmed, comes as a particularly devastating blow to the Native Village of Nuiqsut, which had brokered a deal with the Biden administration to create a nearly million-acre caribou reserve to foster a herd on which the indigenous residents have long depended. But former Nuiqsut Mayor Rosemary Ahtuangaruak told the public-lands-focused investigative site that new drilling activity around the village has already changed the herd’s migration patterns. “All of the contractual agreements that were supposed to guide how development is going to occur have been ripped out of the books,” she said. “We feel that it doesn’t matter that we have a unique DNA, a small community of 500 people, that are just being totally disregarded and sacrificed for the greed of development.”
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Back in May, I told you about Otovo, the new startup from the former chief executive of defunct rooftop solar giant Sunnova. Instead of installing solar panels, the new company repairs rooftop photovoltaic units, in addition to batteries and generators — a sort of AAA for home energy equipment. Otovo started in Norway, targeting millions of homeowners across Europe with solar panels from installers that went out of business and left customers without maintenance service. The company has mounted a global expansion into the United States by buying smaller solar companies and maintenance providers. On Thursday, Otovo plans to announce two deals to make its latest acquisitions: Oahu-based PV Hawaii and Mr. Elektro in Norway and Sweden. The combined value of the deals — which are being reported first in this newsletter — is about $4.6 million. “PV Hawaii and Mr. Elektro bring licensed, experienced local teams that strengthen how we serve customers, and they extend our platform into Hawaii for the first time while deepening our reach across Norway and Sweden,” Otovo CEO John Berger told me in a statement.

You read that right. Unless you (like, uh, some people…) are familiar with late 20th century Melanesian geopolitics, you may not know the story of Bougainville. The island province off Papua New Guinea long had a troubled history. Ethnically, its people are related to those of the Solomon Islands, but German colonial borders hemmed the mineral-rich isle into the territory controlled by Port Moresby. In the 1970s, Anglo-Australian mining giant Rio Tinto built the Panguna mine in the center of the island. Pollution and labor violations plagued the open-pit copper and gold mine, ultimately fueling a separatist rebellion. A conflict, known as the Bougainvillean Civil War, erupted in 1988 and lasted for 10 years, only ending with a peace accord that allowed for a referendum on independence. In 2019, the autonomous province voted nearly unanimously in favor of breaking away from Papua New Guinea. The non-binding vote has yet to be ratified by the parliament in Port Moresby. But the leaders of Bougainville expect to become the world’s newest country by 2030.
To fund its sovereignty, the island wants to reopen Panguna. Last November, Ishmael Toroama, the president of Bougainville, signed a memorandum of understanding with Lloyds Metals and Energy. The Indian iron-ore miner won the deal “despite warnings from Bougainville’s majority state-owned mining company, Bougainville Copper, that Lloyds lacked the technical and financial capacity of rival bidders,” the Organized Crime and Corruption Reporting Project reported in a major new investigation. Just a month earlier, Toroama confirmed to OCCRP, “he accepted an offer from Lloyds’ managing director Balasubramanian Prabhakaran to arrange for his wife to travel to India and have a life-saving kidney operation at no cost to the president.” Toroama told OCCRP that the gift did not weigh on his decision to select the Mumbai-based Lloyds for the project.
The first step in the Department of Energy’s effort to propel new reactor technologies to market was a pair of pilot programs to speed up development of projects from both power and fuel producers. The next step is the “nuclear launch pad” initiative at the Idaho National Laboratory’s National Reactor Innovation Center. This week, the agency announced the first 12 companies to participate in the new program, which bills itself as providing “flexible technical and regulatory frameworks designed to fast-track paths from concept to deployment.” The list includes microreactor developers Antares Nuclear, Atlas Atomics, Oklo, Valar Atomics, Scaled Atomics, and two projects from Deployable Energy; fuel makers Forge Atomics, Hexium, Lightbridge Corporation, Raven-Flint Nuclear, and Sublime Nuclear; and medical isotope startup Nusano. “These selections show a strong and growing interest from developers ready to move their technologies forward,” Brad Tomer, the director of the National Reactor Innovation Center, said in a statement. Meanwhile, another startup spinning out from the Massachusetts Institute of Technology announced a big initial funding round. Apollo Atomics — which aims to build next-generation pressurized water reactors, the type of reactor that makes up the bulk of the global fleet — announced a $31 million seed financing round, NucNet reported.
Rob talks with Amanda Levin, head of climate science and policy at the Natural Resources Defense Council, about why we shouldn’t give up on renewable subsidies just yet.
Two years ago, Donald Trump made an outlandish campaign promise: He would cut Americans’ power bills in half.
It was a ridiculous, impossible pledge — but even so, the affordability problem didn’t need to get this bad. A new report, out this week from the Natural Resources Defense Council, looks at the economic, environmental, and public health costs of Trump’s regulatory and legislative clean energy policies, including his rollback of the wind and solar tax credits.
The report’s author, Amanda Levin, joins Rob on this episode of Shift Key. Levin is a Director of Policy Analysis at the NRDC’s Science Office. They discuss why Trump’s repeal will have long-term effects, the underrated public health impacts of the rollback, and why Levin believes the credits should be restored.
Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap News.
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Here is an excerpt from their conversation:
Robinson Meyer: So you’ve said that we should have tax credits that buy down the cost of technologies while we’re installing them. We had Lily Bermel on Shift Key a few weeks ago with her report, and she looked at a different set of questions here, and I think it’s worth kind of talking about them in a second. But her view of the data — which I would say I’ve also heard now from some solar developers, who obviously represent the interests of their industry — but her view of the data was like, look, there’s a lot of solar and batteries that are about to get built as developers rush to hit a deadline, rush to hit the deadline in the One Big Beautiful Bill Act. Her view is, if you look at this from an emissions perspective, you don’t need wind and solar tax credits. So really ,money would be better spent elsewhere. It would be better spent buying down the cost of clean firm technologies like advanced geothermal, like fusion, perhaps, that can run 24/7 and start to push gas out of the system.
You’ve written an op-ed for Heatmap kind of taking issue with some of those claims, and I want to actually lean into that disagreement. Why should the U.S. restore wind and solar tax credits? Because I would say we’ve learned one thing, actually, in the past month since Lily was on the show. It is that deficit concerns are going to be even more pressing for lawmakers, it seems like, in 2029, even in 2027, than they were in 2024 or 2022, because interest rates are going to be high. They seem to be getting higher. Among the crises that Democrats will have promised to solve is this deficit crisis that is of Trump’s own creation. And so why should a scarce dollar go to wind and solar tax credits?
Amanda Levin: I think it’s important to remember that renewables have a lot of benefits, and not all of them are reflected in the decisions that a utility might make on behalf of its customers. Renewables both lower pollution, which can help reduce the costs and the burden that we have both from public health pollution as well as from climate pollution. They also can enhance energy security and increase economic opportunities.
But I think importantly, it’s a recognition of, one, we need to build a lot of energy fast, and we want to build it clean, as well. And that is going to take quite a bit of money up front. Even if wind and solar are some of the cheapest, lowest cost options over the life of their investment, when looking at something more simplistic, like a levelized cost of energy, it doesn’t mean that they don’t have large upfront costs that need to then be recovered from someone. And in the structure of many of our states, that someone is going to be ratepayers. And often the way that we recover money through electricity bills and rates is not progressive. It’s pretty regressive. So I think the way that we see the kind of tax credits playing into this is it’s an essential part of ensuring that as we transition towards a cleaner system, it remains affordable for everyone by moving costs off of ratepayers, who are going to be much more regressively taxed, and putting them onto the federal government, when we know that we need to be spending more on clean energy to meet our growing load, and also just to invest in our grid that is, in many cases, reaching the end of its life for certain investments.
And so I think to that kind of question of what are we trying to solve here? Obviously, wind and solar, we still see that they are being built, and they make up the bulk of anything that’s going to be built in the next decade. But we’re definitely not building enough.
There was a paper that I was part of at the beginning of 2025 that found that in order to meet our climate commitments, we would need to quadruple the amount of wind, solar, and battery storage that was being added to the system compared to recent day records. The IRA got us basically halfway there. And if you look at where we are now with Trump, we’ve basically lost that halfway there. But what we know is, if we want to actually tackle our societal challenges — climate, health, everything — and affordability, we’re going to both need to build a lot of clean energy, but also we can’t put that on the backs of ratepayers. We need to explore other ways to mitigate the near-term affordability shock that will come from just having to invest in our system.
You can find a full transcript of the episode here.
Mentioned:
Amanda Levin’s new report: An Affordability Crisis of Trump’s Own Making
A ‘Glass Half Full’ Isn’t Enough to Fight Climate Change
Previously on Shift Key: The New Paper Arguing Biden’s Power Sector Emissions Cuts Are Largely Intact — Even Under Trump
This episode of Shift Key is sponsored by ...
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Verse's software platform Aria helps data centers connect to the grid faster and optimize power operations in real time. Learn more at verse.inc.
Music for Shift Key is by Adam Kromelow.