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They’ve become a stump speech punchline.

Donald Trump claims to be a “big fan” of electric vehicles despite making them a frequent target of derision on the campaign trail. He might be a bigger fan, though, if he got his facts straight. Here’s what Trump has gotten right and wrong about EVs since 2021.
“To China, if you’re listening — President Xi, you and I are friends, but he understands the way I deal. Those big monster car manufacturing plants that you are building in Mexico right now, and you think you are going to get that, not hire Americans, and you’re going to sell the car to us — no. We are going to put a 100% tariff on every single car that comes across the lot.” [March 16, 2024]
Fact check: “There actually are no operating Chinese-owned EV factories in Mexico,” Ilaria Mazzocco, a senior fellow at the Center for Strategic and International Studies and an expert on Chinese climate policy, told me. “So this is very preemptive at this point.”
But it is also, probably, only a matter of time: BYD, which last year passed Tesla as the world’s No. 1 EV maker, is reportedly scouting plant locations in Mexico, and could confirm plans as soon as the second half of 2024. That has made U.S. automakers justifiably nervous. As Robinson Meyer previously wrote for Heatmap, “BYD recently advertised an $11,000 plug-in hybrid targeted at the Chinese market … Even doubling its price with tariffs would keep it firmly among [the United States’] most affordable new vehicles.”
In Mazzocco’s opinion, this isn’t wholly a bad thing — “there’s a point of value to competition that we shouldn’t forget” — and the threat of cheap Chinese EVs has already driven American automakers like Ford to pivot their electric lineups.
But “EVs have encapsulated everybody’s fears of competition with China,” Mazzocco said. The rude awakening has been that they are “actually better at something than the Americans are.” As a result, Biden and Trump are jostling to look tougher on Beijing ahead of the election, especially since big auto manufacturing states like Michigan and Ohio could potentially decide control of the White House. Biden has already ordered the Commerce Department to investigate the potential national security threat of Chinese-made EVs, which currently make up only about 2% of EV imports; Polestar became the first Chinese-owned EV company to make moves in the U.S. last year, but it’s hardly thriving. Meanwhile, Trump has warned that “it’s gonna be a bloodbath for the country” if he isn’t elected.
“If we build all the charging booths that are necessary, our country would go bankrupt. It would cost like $3 trillion. It’s the craziest thing I’ve ever heard.” [Feb. 17, 2024]
Fact check: $3 trillion is a huge number, and it is also very inaccurate in this case. While there are valid concerns about the Biden administration’s high-speed electric vehicle push, Trump almost certainly got his “$3 trillion” price tag from the total cost of the Bipartisan Infrastructure Law, which aims to address significantly more than just the country’s EV-charging infrastructure.
In fact, the BIL earmarks a comparatively small $7.5 billion for the development of 500,000 public charging stations, although even this is a “generational-level investment,” Noah Barnes, the communications director of the Electrification Coalition, told me. With just a fraction of $3 trillion, the U.S. will be able to jumpstart the “national network of EV chargers that will be necessary to power the next generation of vehicles and end our dependence on oil from countries that don’t share our values.”
But what would it cost to build and operate all the charging booths necessary to meet the current federal target of zero-emission cars making up half of new vehicle sales by 2030? A 2022 report from McKinsey & Company estimated that the U.S. will need “1.2 million public EV chargers and 28 million private EV chargers” by 2030 to meet Biden’s zero-emission sales goals. Those public chargers would cost about $38 billion, including the hardware, planning, and installation. Wrap in the cost to residences, workplaces, and depots, and the total cost of public and private charging installation approaches $97 billion. In a separate analysis, AlixPartners, a consulting firm, found that it would take $50 billion to build the charging infrastructure to meet the 2030 zero-emission vehicle goal in the U.S., and $300 billion worldwide.
Needless to say, though, there are a thousand billions in a trillion, so whatever way you cut it, it certainly would not cost the U.S. $3 trillion to build enough charging stations to accommodate zero-emission vehicles.
“I will also rescue the ethanol industry by canceling crooked Joe Biden’s insane ethanol-killing electric vehicle mandate on day one.” [Dec. 20, 2023]
Fact check: It’s not wrong to say that Biden has tried to reduce the role of liquid fuel in vehicles. Trump has gunned for Iowa voters by claiming Biden’s goal (albeit not a binding mandate) of ramping up EV sales will kill the local ethanol industry. But Agriculture Secretary Tom Vilsack — Iowa’s former governor — has stressed that just because the administration is pushing for more EVs, “Does that mean we won’t have a need for E15 or E85” — gasoline blends that contain up to 15% and 85% ethanol content, respectively — “in the future? No.”
For example, new rules defining what qualifies as a “sustainable aviation fuel” — and thus for generous tax credits under the IRA — include ethanol and other plant-based fuels, despite opposition from environmental groups. “The Biden administration plans to invest $4.3 billion to support production of 35 billion gallons of sustainable aviation fuel annually by 2050,” presenting a significant opportunity for Iowa’s farmers, The Des Moines Register writes. As Vilsack added, “You have to think beyond cars and trucks.”
“They want to have electric trucks, so a truck — a big, beautiful truck like Peterbilt or one of them, with the big ones, 18 wheelers, they can go about 2,000 miles, they say, 2,000 on a big tank of diesel. An electric truck, comparable — which it can’t be comparable because you need so much room for the battery. Most of the area that you’re going to carry your goods, going to be battery. But assuming we take away that problem, which is not easy to take away, you’d have to stop approximately seven times to go 2,000 miles, right? You go about 300 miles, and they don’t want to change that.” [Dec. 20, 2023]
Fact check: There’s a lot to unpack here, but the gist is that most of these are the kind of early-stage problems you would find with any emerging technology. While the technology powering heavy-duty electric trucks is promising, there is still a long way to go when it comes to range and capacity.
Still, even a semi that goes only around 375 miles — longer than Trump’s estimate — on a single charge would ultimately be cheaper than a diesel truck, one 2021 study found. Because of the lower cost of ownership, electric semis have a net savings of $200,000 over a 15-year lifespan.
Battery size, and in particular battery weight, will be a major hurdle for long haul electric semis; shipping rates are often determined based on weight, among other factors, and since freight companies already operate on narrow margins, carrying less freight weight is a problem. But the technology is constantly improving. Plus, it’s pretty silly to claim electric truck developers “don’t want to change” their range per charge; electric truck manufacturers are constantly boasting about their new mileage numbers.
“This electric car thing is just crazy. If you want to drive, maybe, let’s say you are here. If you say, ‘Let’s take a drive to beautiful, safe Chicago. It’s so safe. Let’s drive there.’ How many times would you have to stop, about nine? It’s just crazy. They know it. They know it’s crazy.” [Dec. 20, 2023]
Fact check: The distance from Waterloo, Iowa — where Trump made these comments — to “beautiful, safe Chicago” is 269 miles. While the EVs with the worst range would have to charge one single time on a trip of that distance, in 2022, the average EV range was nearly 300 miles. Most cars would make it on a single charge.
“And now we are a nation that wants to make our revered and very powerful army tanks, the best in the world, all-electric, so that despite the fact they are also not able to go far, fewer pollutants will be released into the air as we blast our way through enemy territory, at least in an environmentally friendly way. And they also want to make our jet fighters with a green stamp of energy savings through losing 15% efficiency.” [Dec. 17, 2023]
Fact check: Trump has repeatedly slammed the Biden administration for supposedly wanting to switch to “all-electric” tanks. This is mostly false, though it has its roots in the Army’s first-ever climate strategy, released early last year. In it, the Army stated that it aims to electrify all noncombat vehicles by 2035 and some tactical vehicles by 2050.
The reason the Army wants to go electric isn’t because of some woke environmentalist agenda, though. “The primary reason the Army wants to electrify its fighting vehicles is to reduce wartime casualties,” Bloomberg writes. “An all-electric fleet would mean personnel wouldn’t have to go on dangerous refueling missions that draw combat forces away from fighting the enemy … [and] electric vehicles are also much quieter and harder to spot on enemy surveillance systems because they generate so little heat.”
Trump has also slammed the Air Force for its climate action plan, although the roots of his claim that Biden wants to make jet fighters green by “losing 15% efficiency” are much less clear. He may be referring to the Air Force’s exploration of alternative fuels — which again, it is doing primarily for strategic reasons, since the Air Force reports 30% of the casualties in Afghanistan came from attacks on fuel and water convoys. “We’re not doing the climate plan for climate’s sake … Everything is about increasing our combat capability,” Edwin Oshiba, assistant secretary of the Air Force for energy, installations, and the environment, told the Armed Forces Communications and Electronics Association.
“The problem is you won’t find a charger. And if you do, it’s got lines.” [Dec. 16, 2023]
Fact check: Many EV drivers are dissatisfied with the state of charging infrastructure in the U.S., and lines are an issue. While more charging stations will continue to open up as EVs become more popular — the IRA allotted $7.5 billion to build out 500,000 public chargers by 2030, with another $623 million in EV charging grants awarded last week — this seems, at the moment, to be a fair criticism.
“We are a nation whose leaders are demanding all-electric cars despite the fact that they can’t go far, cost too much, and whose batteries are produced in China with materials only available in China when an unlimited amount of gasoline is available inexpensively in the United States but is not available in China.” [Dec. 17, 2023]
Fact check: China indeed dominates the EV battery market. The Inflation Reduction Act — which Trump has promised to gut — has tried to change this by restricting EV tax credits only to models with batteries and components sourced from the U.S. or its trading partners. The law also includes funding to help seed a domestic EV battery and mineral supply chain.
And it’s working. As my colleague Neel Dhanesha wrote last year, “Battery manufacturers around the country — many of them automakers themselves — have announced over 1,000 gigawatt hours of U.S. battery production that’s slated to come online by 2028, far outpacing projected demand,” according to estimates from the Environmental Defense Fund. All told, domestic battery production has been the greatest beneficiary of the IRA, reports RMI, a clean energy research group.
“Let’s say your [electric] boat goes down and I’m sitting on top of this big powerful battery and the boat’s going down. Do I get electrocuted?” [Oct. 1, 2023]
Fact check: Battery packs on electric boats are designed to be watertight because, believe it or not, it’s crossed the mind of electric boat manufacturers that their products could potentially end up underwater. All the electric boat makers I spoke to in my lengthy investigation into this question told me the battery packs they use have a waterproofing standard that is either at, or just below, what is required for a submarine. The high-voltage batteries are also kept in “puncture-resistant shells” so they won't be exposed to the water even if the boat somehow got mangled in an accident.
All this is a very long way of saying: No, you very likely won’t be electrocuted if your electric boat sinks. But you may get eaten by a shark!
“Hundreds of thousands of American jobs, your jobs, will be gone forever. By most estimates, under Biden’s electric vehicle mandate, 40% of all U.S. auto jobs will disappear.” [Sept. 27, 2023]
Fact check: As Heatmap has reported, there is little evidence to suggest that making electric vehicles will result in fewer jobs. “A number of analyses showed that electric vehicles could actually require more labor to build than gas-powered cars in the U.S., at least for the foreseeable future,” Emily Pontecorvo writes.
“The happiest moment for somebody in an electric car is the first 10 minutes. In other words, you get it charged, and now for 10 minutes. The unhappiest part is the next hour because you’re petrified that you’re not going to be finding another charger.” [August 24, 2023]
Fact check: We don’t know what every single EV driver thinks, but EV drivers as a group tend to be pretty satisfied; plug-in hybrids were level with internal combustion vehicles in J.D. Power’s annual survey of performance, execution, and layout-based consumer satisfaction, with fully battery-powered EVs just a few points behind on a 1,000-point scale. Some 90% of EV drivers say they hope to buy another EV as their next car, a 2022 Plug-In America survey found.
And while range anxiety is real, studies show that it declines the longer someone owns an EV and gets comfortable with charging. Only 8% of EV drivers told Escalent they’ve ever run out of juice while driving.
It’ll take more than an hour for you to start getting anxious, too. The average EV sold in the U.S. last year had a range of 291 miles, or a little over four hours of driving at 70mph.
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This type of clean energy infrastructure is booming across the country.
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.
You know it, and I know it: The United States struggles to build certain kinds of large-scale energy infrastructure. That presents a challenge for people who, say, want to decarbonize the economy, because decarbonizing will require replacing the stock of fossil fuel-consuming power plants and pipelines with new clean alternatives. Even carbon-intensive industries, such as data centers, have started to hit bottlenecks.
Yet there is at least one energy industry that’s pulling off year-over-year, double-digit growth rates in the United States right now — and it’s not data centers.
It’s batteries. The battery storage industry is booming across the country, according to new data from the Energy Information Administration. The amount of utility-scale battery storage capacity has grown by an average of 70% over the past three years, according to a recent EIA article. Developers and utilities have added 8.3 gigawatts of capacity just in the first six months of this year, and the agency says that we could add another 14 gigawatts by the beginning of 2027.
Our nerdier readers will understand this, but this battery boom is changing the nature of electricity itself. Until recently, the easiest way to store electricity was to keep a stash of unused fuel on the same site as a power plant, usually in the form of coal, natural gas, diesel, or uranium. There were other ways to store power — perhaps by building a pumped storage hydropower facility — but they weren’t particularly easy, cheap, or modular, and their constraints only made them suitable for some sites.
But lithium-ion batteries have allowed developers to quickly build out battery storage facilities across the country. I recently came across such a site while hiking in Harriman State Park, 40 miles north of New York City, where the local utility had built grid-scale batteries near a substation to help stabilize the grid. (It was like meeting a celebrity.) And while batteries are not necessarily clean, per se — they can technically save any “type” of electricity for later — solar farms are building larger batteries than any other type of power plant, the EIA says.
It helps that the Inflation Reduction Act’s tax incentives for grid-scale battery construction survived President Donald Trump’s partial repeal last year. The battery boom has stabilized other parts of the clean energy economy. Ford and General Motors have invested in grid-scale battery technology or retooled what were once EV production lines to make grid-scale batteries instead.
None of this, to be clear, is to say it's always easy to develop batteries. There are now 74 gigawatts of pending battery projects across the country, according to Heatmap Pro data. About 34 projects — totaling at least 6.1 gigawatts — have been canceled over the past few years, our data shows.
Yet our data — and the EIA’s — also shows that dozens of battery projects have overcome public opposition and successfully gotten built. I expect we'll see even more power on in the future.
Jack Klein talks about how to protect New York City’s most vulnerable transit customers, why subway air conditioning has made platform heat worse.
You might already know Jack Klein. Last summer, he went viral on TikTok for his videos documenting the heat on various New York City subway platforms, including recording a whopping “feels like” temperature of 130 degrees Fahrenheit at the 6th Avenue/14th Street L train station.
“No one had collected subterranean data within the New York subway system,” he told me. The results of his unsanctioned citizen science project — which covered seven highly-trafficked stations up and down Manhattan — attracted the attention of The Weather Company, Google Public Sector, and the New York Post (which called it a “quirky art project.”) Building on the success of his weird videos, Klein formally founded New York Lab last fall. There, he works to bring together engineers, scientists, and public health experts to lobby the Metropolitan Transportation Authority — a state agency, believe it or not, which holds the ultimate decision-making powers — to do more for the populations hit worse by extreme temperatures during their commutes.
After many rejections and setbacks, it appears that someone is finally listening to Klein. On Tuesday, New York City Mayor Zohran Mamdani and New York Governor Kathy Hochul announced that the MTA is launching a feasibility study for the development of a thermal energy network at the Brooklyn Bridge-City Hall and Chambers Street station complex, funded by the New York State Energy Research and Development Authority. Essentially, the city and state want to know whether the stations are hot enough that the thermal energy could be captured — via 500-foot-deep boreholes that cool the platforms in the process — and used to warm nearby municipal buildings like City Hall in the winter.
I caught up with Klein to learn what he thinks about the project and what else the transit agency could do to bring relief to straphangers in the short term. Our conversation has been lightly edited and condensed for clarity.
What do you think about the location the city chose for this study?
I thought it was interesting they chose those stations. It seems like it’s a good place to test geothermal solutions because it sounds like there is a part of the tracks that isn’t being used, so they don’t have to stop service. That’s one of the challenges of these large infrastructure projects: The trains run 24/7, so you can’t really shut down the stations. [Editor’s note: The city also recently announced a multi-million-dollar restoration project for the Chambers Street station, funded by congestion pricing.]
Logistically it makes more sense because these other stations [I looked at] are really high in foot traffic — which I'm sure Chambers is, too — but because they're able to do the construction without disrupting traffic, they avoid a major roadblock. I feel like for a pilot, you don’t necessarily have to do it at the hottest station; the question is, what’s a hot station we can feasibly do this at?
Brooklyn Bridge-City Hall wasn’t a platform you monitored during your project last year, but the mayor’s office says it’s one of the hottest in the system, reaching 96 degrees Fahrenheit last summer. How does that compare with what you recorded?
I focused on the heat index, or the “feels like” temperature. They must be measuring the actual temperature of the station, but I don’t really ever go down there, so I don’t actually know. Of the stations I measured, 14th Street-Union Square and Times Square were in the 120s and 130s near the platform when the trains were in the station. So I imagine it’s quite similar.
Why was humidity important for you to factor in?
I remember two years ago, I had a digital thermometer, and I was pointing it at, like, a wet floor sign or the walls and floors of Union Square. There’s a shock value there, but it actually means nothing in terms of what my whole project is based around, which is that this is a health issue — especially for people in the most vulnerable populations, like the elderly, people with disabilities, pregnant people. So how do we measure what it actually feels like to stand waiting for a train? And we live in a subtropical environment, so humidity is a major factor. I mean, I’m literally sweating through my shirt in a [Brooklyn] school right now. There’s no AC, and it’s not even that hot; it’s just so humid.
And air-conditioned trains actually make the stations hotter, right?
It seems like one of the largest contributors to extreme heat in the stations during the summer is the AC onboard the trains. When a train pulls in, all the excess heat gets pushed onto the platform. You can feel that when you’re waiting for trains; when they pull in, it’s like an inferno of hot air on your face.
It’s a double-edged sword: They’re cooling the trains to be extremely cold, which is nice, but sometimes it’s a bit extreme, and it’s only making the stations hotter. I know there has been talk about not cooling them to such an insane degree, making them a bit warmer, so it wouldn’t heat the stations quite as much. But it’s a sort of paradoxical thing. There’s no right or wrong; it’s just the reality of having AC on trains. It makes the tunnels hotter and the stations hotter.
Did the possibility of a thermal energy network ever come up when you were talking with experts and the MTA about ways to deal with the subway heat?
Last summer, in September of 2025, the MTA issued a request for information on geothermal cooling technologies — specifically for the 168th Street 1 Station and the 181st 1 Station — because both are very deep, and there’s potential for Columbia and New York Presbyterian to use the heat during the winter. Some scientists and I, along with a geothermal engineering company I did this pro bono for, filled out a 14-question feasibility analysis. That was the RFI. Basically, it wasn’t a full analysis, but it was like, “If you were to pay us to do this, here’s what we could answer. Here’s a very quick explanation of how you could use boreholes. What other assets does the MTA already have that could be useful? How much money could you make off it?”
But now, we haven’t heard from the MTA in a year since our RFI. And I understand how RFIs work, which is that you don’t often hear back, but it does make me curious. What is the process for contracting out the pilot? Who gets chosen? Will we hear back? Because we did throw our hat in the ring a year ago, and now we’re hearing about it, and it’s obviously a direct result of those RFIs. So it’s exciting, but I’m also selfishly a bit like, Okay, well, are we going to be involved at all?
So you think there’s something to this idea, then.
I was relying on the engineers and scientists I partnered with to actually understand the technical side of these questions, but they are excited. They’re very confident in it.
The MTA put out another RFI in 2023 for geothermal, and though that didn’t go anywhere, there’s been talk about this for a while. That’s why this is exciting. But again, they announced the pilot, but it has to happen at one station, and there are all the financial and political hurdles still to come. So it’s cool that Mamdani is announcing it, but who knows what’s going to happen? Still, I think it’s the farthest the idea has gotten. And if they actually test it out, that’d be monumental.
What else could the MTA do to cool the stations down and keep people safe?
There’s another pilot right now [at the East Broadway Station] using radiant cooling technology, which runs pipes of water on the ceiling to soak up the heat. I’m focused right now on promoting access to water underground, more seating, and better ventilation — shorter-term, more adaptable, more realistic solutions. Because who knows how long these projects will take to actually implement in hundreds of stations?
Money is pouring into small modular and microreactor startups. But there can only be so many winners.
Investment in smaller, next-generation nuclear reactor designs is booming, with a flood of capital pouring into scaled-down models known as small modular reactors — or, if they’re extra tiny, microreactors. In just the past few weeks, Valar Atomics announced a $1 billion Series B, while Antares Nuclear closed its $470 million Series C. The two companies are attempting to serve different customers — Valar is targeting hyperscale data centers, while Antares is building for off-grid military applications — but both are betting on the same premise: that smaller, factory-built reactors can deliver reliable, carbon-free power far more quickly, flexibly, and cheaply than traditional large-scale nuclear plants.
Venture capital is eating it up. In addition to Valar and Antares’ raises this year, SMR startup X-Energy went public in April, raising over $1 billion at a $9.1 billion valuation. Last year alone, SMR companies TerraPower, Last Energy, Radiant Industries, Aalo Atomics, Arc Clean Technology, and Stellaria all raised rounds.
It seems like every week brings another announcement about an SMR company hitting a new milestone or a microreactor raising a new round. But some industry experts aren’t buying the hype. One 2024 report by the Institute for Energy Economics and Financial Analysis summarizes it neatly with the title, “Small Modular Reactors: Still too expensive, too slow and too risky.” One of the report’s co-authors, Dennis Wamsted, thinks this blunt analysis has held up remarkably well.
“I still think that’s one of the best-titled reports we ever wrote,” he told me, arguing that nothing in the past two years has changed his fundamental analysis of the sector. “I think it’s just as overhyped as it was a few years ago. There is a shiny new object mentality to SMRs. They’re going to work perfectly right out of the box.” Instead, the report argues, borrowing a phrase from NextEra Energy CEO John Ketchum, SMRs are “an opportunity to lose money in smaller batches.”
The report came out about six months after NuScale — still the only SMR company with a design certified by the U.S. Nuclear Regulatory Commission — canceled its inaugural project in Idaho before construction even began. It’s been a wild ride ever since: Buoyed by investor excitement over an artificial intelligence-driven nuclear renaissance, NuScale’s stock soared last year before losing most of its value once again as the company posted major losses.
The AI boom has driven much of the surge in SMR interest, as hyperscalers scramble to procure power for a rapidly expanding fleet of new data centers. Google, Amazon, and Meta have signed agreements with SMR developers Kairos Power, X-energy, and TerraPower and Oklo, respectively. At the same time, bipartisan support for nuclear is growing. Recent Gallup polls show that 46% of Americans believe the U.S. should put a greater emphasis on nuclear power and that 61% support the technology overall. Other surveys suggest SMRs in particular enjoy even higher levels of favorability.
The Trump administration has gone all in too, signing executive orders directing the Department of Energy and Department of Defense to prioritize deploying small reactors at domestic military bases and spinning up the Reactor Pilot Program to expedite testing of 11 new advanced reactor designs outside the jurisdiction of the Nuclear Regulatory Commission. The program aimed to have three reach criticality — the point at which a nuclear reaction becomes self-sustaining — by this July 4th. Four microreactor companies ended up beating the deadline: Antares, Valar, Deployable Energy, and Aalo Atomics, while the Sam Altman-backed SMR company Oklo achieved criticality last week.
“Say I was an advisor to the Department of Energy,” Wamsted’s co-auther David Schlissel, formerly director of resource planning analysis at the Institute for Energy Economics and Financial Analysis, posited to me. “Even with the risk, the smart way to go is, let’s pick two or three designs and go out and build them. Build one of each. See which ones work and which ones don’t. But what’s happening is the exact opposite of that.”
Whether federal policy is creating a durable new industry or not, there are still plenty of situations where customers need clean, firm power and today’s options fall short. Solar-plus-storage is broadly useful, but matching nuclear’s 24/7 availability can require significant overbuilding. And when it comes to large-scale nuclear, a customer may need power sooner than when a project that big could feasibly come online.
Many customers are also simply unwilling to take on the risk of a multibillion-dollar, decade-long nuclear megaproject, which tend to run over time and budget. The only new reactors built in the U.S. since the Three Mile Island accident in 1979 — two huge Westinghouse AP1000 units capable of generating 1.1 gigawatts of power apiece — have become poster children for this risk. Units 3 and 4 at the Vogtle Electricity Generating Plant in Georgia came online in 2023 and 2024, respectively, roughly seven years late and tens of billions of dollars over budget. Georgia Power customers will be paying off Vogtle well into the 2050s.
This has left many SMR entrepreneurs and industry boosters convinced there simply must be a better way. "The only customers capable of buying a reactor that large are either nation-state governments or essentially state-backed utilities,” Jordan Bramble, Antares’ co-founder and CEO, told me.
In part because of this, Bramble rejects the idea that small reactors are even competing with large-scale nuclear in the first place, explaining that the either/or framing overlooks the fact that these designs attract distinct pools of capital. “What a venture capitalist in private equity is going to invest in versus a municipal bond investor or a utility investor is going to invest in are two totally different things,” he told me.
And while SMRs may eventually seek institutional capital too, Bramble points to recent funding rounds by Anthropic, OpenAI, and Commonwealth Fusion Systems as evidence of just how much money companies can attract in today's private market even before their tech has come down the cost curve. “I think when the upside equation is there, there’s near limitless money in venture and growth equity right now,” he told me.
True? Largely. Indicative of a bubble? Possibly.
One lesson many developers took from NuScale seems to be about customer selection. While NuScale intended to serve a coalition of small, price-sensitive municipal utilities, today’s SMR startups are targeting early adopters with more room in their budgets: AI hyperscalers, of course, but also military and defense customers and industrial companies such as chemicals and metals producers that can put both nuclear’s heat and electricity to use. Modular, factory-based production is central to many of their strategies, along with even smaller reactor designs. While NuScale sought to build 77-megawatt reactors, Valar is targeting 5 megawatts while Antares is building in the 100-kilowatt to 1-gigawatt range.
But utility analyst Bill Tilles argues that scaling down further isn’t the answer. The fundamental issue with SMRs, he told me, is that they suffer from a "reverse economy of scale." That is, shrink the size of the reactor and the cost per watt of electricity produced goes up, not down. Add in a market crowded with dozens of these companies pursuing different reactor designs and fuel types but chasing the same data center, defense, and industrial customers, and it becomes difficult to see how any single one can attract the critical mass of customers needed to scale up a manufacturing line and become relatively cost-effective.
Of course, every SMR company says it’s uniquely positioned to emerge as a winner in what even Bramble acknowledges is an overcrowded field likely to see consolidation in the coming years through either mergers and acquisitions or outright failures. Still, he’s feeling confident in Antares’ decision to pursue the Department of Defense as a beachhead customer: In April, the Air Force selected the company to build a 500-kilowatt microreactor at a military base in San Antonio, set to come online in 2028.
“[Nuclear] actually was always a defense-first technology that eventually became commercial, and that’s how rocket propulsion worked. It’s how GPS worked. It’s how semiconductors worked. It’s even how the internet developed,” he told me. Bramble said he thinks Antares can follow a similar trajectory, riding the cost curve down before eventually bringing a grid-scale product to market.
While SMR skeptics may not be convinced this grid-scale goal is truly feasible, many do acknowledge that remote military bases offer a compelling, if niche, market for SMRs and microreactors. The military has operated nuclear-powered submarines for decades, so the concept of using small reactors in situations where conventional refueling is costly and dangerous is not without precedent. “You have these unique, price insensitive buyers that the government will try to encourage,” Tilles told me of remote deployments. “But one should not confuse that with anything resembling a commercial technology.”
That may be where the real debate lies — whether there are enough price insensitive customers for multiple companies to commercialize small reactors at scale and drive costs down.
There’s also the question of what the market will look like by the time these companies are ready to scale production — a milestone experts peg around the mid-2030s. Ultra-long-duration energy storage company Form Energy and advanced geothermal developer Fervo are already building out and turning on their first commercial projects, while multiple fusion companies are similarly targeting the mid-2030s for commercialization. If any or all of these technologies take off, they could reshape the market for clean, firm power — and thus the options available to SMRs’ potential customers.
But Benton Arnett, senior director at the industry group Nuclear Energy Institute, argues that multi-billion-dollar energy customers would be unwise to put all their eggs in one technological basket, betting that ultra-long duration storage or fusion alone will meet all their future energy needs. “You’ve got to have a diversity of investments and a diversity of plays so you can capture what’s going to be most available over the next 10 years, which can be really hard to predict,” he told me. He’s obviously betting SMRs will be among those technologies of the future. “I think everyone’s building right now not based on hype, but based on real dollars that are changing hands, building out this kind of new data center ecosystem.”
Bramble, for his part, thinks the hype cycle might be real. He just doesn’t see the exuberance as a negative for Antares or the industry at large. “Some of the most generational, economically transformational companies get built during a hype cycle,” he told me. “That was true of Google and Amazon in the dot-com bubble. This was true of the railroads. The best ones emerged during a period of mass overbuilding and overinvestment.”
So the question may not be whether the SMR boom will produce any winners, but how many — and how much capital investors and startups will burn in the process. Because while the Google of small nuclear may still be waiting to emerge, history suggests there will be plenty of nuclear equivalents of Pets.coms, Kozmo.coms, and Webvans along the way.