Whichever way you cut it, this has been an absolute banner year for nuclear deals in the U.S. It doesn’t much matter the metric — the amount of venture funding flowing to nuclear startups, the number of announcements regarding planned reactor restarts and upgrades, gigawatts of new construction added to the pipeline — it’s basically all peaking. Stock prices are up across all major publicly traded nuclear companies this year, in some cases by over 100%.
“This year is by far the biggest year in terms of nuclear deals that has occurred, probably, since the 70s,” Adam Stein, the director of nuclear innovation at The Breakthrough Institute, told me. “It’s spanning the gamut from bringing a 40-year-old reactor back to things that have not even been proven scientifically yet.”
To name just a few announcements from this year: planning for a 4.4-gigawatt nuclear power complex is now underway in Texas; South Carolina’s state-owned utility is seeking buyers to restart construction on two partially built AP1000 reactors; New York governor Kathy Hochul is looking to build a new reactor in upstate New York; The Tennessee Valley Authority submitted a construction permit for a small modular reactor; Google signed a power purchase agreement with Commonwealth Fusion Systems; and another fusion company, Helion Energy, raised a whopping $425 million round of venture capital. On top of all that there’s the Palisades nuclear power plant in Michigan, which is targeted to restart by year’s end, bringing 800 megawatts of new nuclear power online.
Heading into the second Trump term, there were plenty of indications that the administration would support this technology with increasingly bipartisan appeal. So it wasn’t exactly a surprise that while the One Big Beautiful Bill eviscerated tax credits for solar and wind, it preserved them for both existing and new nuclear facilities. Now that this support is assured, Stein expects the nuclear announcements to keep rolling in. “We might have seen more deals earlier this year if there wasn’t uncertainty about what was going to happen with tax credits. But now that that’s resolved, I expect to hear more later this year,” he told me.
How much of this is, I asked him, is due to data centers and their seemingly insatiable demand for clean, firm power? “Most of it,” he said simply. By way of example, he pointed out how data center load growth has changed the outlooks for two small modular reactor companies in particular. “NuScale has been trying to find their first project for a long time now, after they had to cancel their [Utah Associated Municipal Power Systems] project. Kairos didn’t have a clear buyer for its first-of-a-kind, even though it was building two test reactors,” Stein explained. “Then all of a sudden, they all had additional deals in the works because of data center demand.”
Last year, Kairos inked a 500-megawatt deal with Google to meet the hyperscaler’s growing data center needs, while this year, Texas A&M selected the company — along with three others — to build a reactor at the university’s research and development campus. And while NuScale infamously canceled its first project in 2023 due to rising costs, this year it received approval from the Nuclear Regulatory Commission for a new and improved reactor design. Now the company’s CEO, John Hopkins, told Reuters that NuScale is in talks to deploy its tech with five unnamed “tier one hyperscalers.” Its stock is up more than 150% on the year.
That’s a big turnaround for a company that, less than two years ago, was widely considered a cautionary tale — and it’s not the only one in the industry with this type of comeback story. Right before NuScale’s project failed, another nuclear company, X-energy, announced that it would no longer go public due to “challenging market conditions” and “peer company trading performance.” But while X-energy still has yet to IPO, it appears to be doing just fine. In February, the company announced the close of a $700 million Series C follow-on round, coming on the heels of Amazon’s strategic investment last year.
“I think every company has their stories about how things are changing,” Seth Grae, CEO of the advanced nuclear fuel company Lightbridge, told me. Things have moved a lot faster, Grae said, since Trump released a series of executive orders aimed at accelerating nuclear energy deployment. “Just since May, we’ve received this highly enriched uranium [from the Department of Energy], made these fuel samples, got them qualified already at Idaho National Lab. We expect they’ll be in the reactor this year. Grae told me. “Things didn’t used to happen that fast in nuclear.”
Trump’s plans to fast track nuclear development have also raised serious concerns, however, as critics worry that acceleration could lead to laxer safety standards The executive orders call for, among other things, cutting staff at the Nuclear Regulatory Commission, just as the industry enters a period of intense activity. In June, the President fired one of the agency’s commissioners, Christopher Hanson, without cause. Another commissioner, Annie Caputo, resigned in July.
But right now, the nuclear industry is mostly basking in optimism. Grae credits the government’s strong support for the surge in nuclear stocks — Lightbridge’s own stock price has jumped 180% this year, while another nuclear fuel company, Centrus Energy, is up even more. The small modular reactor company Oklo is up 285% for the year, on the heels of last year’s 12-gigawatt non-binding deal with the data center company Switch — one of the largest corporate clean power agreements to date.
Last year’s slew of deals involving Oklo, X-energy, and Kairos show that the sector’s momentum had been building well before Trump took office. By 2023, the writing was already on the wall in terms of data center load growth, as grid planners began to predict a sharp rise in electricity demand after over a decade of stagnation. But when I asked Erik Funkhauser of the Good Energy Collective whether the prior two years compared with this one, he concurred with Stein. “Nope,” he told me. “We’re seeing capital infusion at a really, really high pace, as high of a pace as the company’s suppliers can keep up with on projects.”
Still, the party may not go on forever. “I see a potential for a Valley of Death,” Stein told me, similar to what many startups go through when they’re trying to raise later-stage funding rounds.
“If things don’t start to actually move forward with real progress, either getting licenses or building prototypes on time, then all of that investment will be pulled back.” That’s what the U.S. saw during the last so-called “nuclear renaissance” in the late 2000s, he explained, when a rash of large reactors were proposed with only two actually reaching completion.
These were the notorious Vogtle reactors 3 and 4 in Georgia, which finally came online in 2023 and 2024 respectively, running billions over budget and years behind schedule. In order for this latest round of nuclear enthusiasm to avoid the same fate, Stein told me it’s critical that leading projects demonstrate enough early success to maintain developer confidence in the economic and technical viability of new — and old — nuclear technologies.
That being said, the sector will inevitably contract. “Back when we saw this last scale-up, there were three designs that were really competing for attention, and now there are 75. So we’re going to see a lot of failures,” Stein said. The question for venture investors, he told me, is “how many failures of startups that you didn’t invest in are you willing to tolerate before you start to think the whole segment has trouble?”
The second main way this could all fall to pieces, he told me, is if “somebody tries to move too fast,” and that recklessness leads to “either a bankruptcy or an accident or something like that that will send ripples or shock waves through the whole sector.”
Indeed, a metaphorical or literal meltdown in the sector could put a quick halt to this year’s frenzied momentum. But within the next few years, as these announced projects begin to line up their licenses and come online — or fall apart— we’ll soon see whether this latest nuclear revival is a true turning point or just another bubble.
