Data centers have spent the past year taking the blame for two household problems at once: the power bill and the water supply. In a lot of American towns, the complaints stuck.<\/p>\n
More than 75 of these projects, worth around $130 billion, have been blocked or delayed across the US so far this year, according to a running tally at Tom’s Hardware<\/a>. Polling covered in the same reporting has 7 out of 10 Americans saying they don’t want one built anywhere near their home.<\/p>\n So the event a nuclear startup and Nvidia staged in the Utah desert on July 1 was aimed squarely at that mood. Valar Atomics wired a Blackwell-based Nvidia desktop unit to its Ward 250 microreactor, served a website off the electricity, and announced a plan for something much bigger that skips the local water entirely.<\/p>\n The demo itself was almost domestic. On stage at the San Rafael Energy Lab outside Orangeville, a Valar team member plugged an Nvidia Spark desktop unit, running the company’s Blackwell architecture, into a circuit fed from the reactor hall.<\/p>\n Inside that hall sits Ward 250, a TRISO-fueled high-temperature gas reactor cooled with pressurized helium instead of water. The hot helium feeds a thermoelectric generator, and usable current comes out the other end.<\/p>\n Valar says the reactor was running at 37% of its intended output during the show, which founder and CEO Isaiah Taylor put at roughly 100 kilowatts of thermal energy. The current, Taylor told the crowd in remarks carried by Tom’s Hardware<\/a>, was at that moment “powering Nvidia’s Blackwell chip, which is currently serving this website.”<\/p>\n The website is nuclearwebsite.com, and the company’s pitch is that it stays online only while the reactor does. Bloomberg<\/a> noted the output amounted to a tiny amount of electricity, and confirmed the part that matters: it’s the first time a next-generation reactor has produced power to run an AI chip in the US.<\/p>\n Ward 250 is the same machine that flew to Utah aboard Air Force C-17s in February<\/a> and went critical on June 18. The name is a family matter, too. Valar says it honors Taylor’s grandfather, Manhattan Project engineer Ward Schaap, along with the country’s 250th birthday.<\/p>\n A desktop PC needs a wall socket’s worth of power. Pointing a nuclear reactor at one, even a reactor at 37% output, is theater. Decent theater, but theater.<\/p>\n It’s honest theater, at least. The electron path was real, from fissioning uranium to helium loop to generator to chip, and no advanced US reactor had completed that particular circuit before.<\/p>\n The paperwork is the bigger caveat. Ward 250 runs under a Department of Energy authorization, not a Nuclear Regulatory Commission license, and the DOE program it belongs to covers research and demonstration rather than commercial sale.<\/p>\n Valar has also joined Texas and Utah in litigation arguing the NRC lacks licensing authority over some microreactors, according to Reuters. The company would rather answer to states.<\/p>\n And every performance figure from the stage came from Valar itself. Nobody independent has audited that 37%, or the 100 kilowatts, yet.<\/p>\n Alongside the demo, the two companies announced an agreement to jointly explore nuclear-powered AI systems. The concrete version under study is a 30-megawatt closed-loop AI factory in Utah, which Valar’s own announcement says “consumes no water from the local community.”<\/p>\n The trick is stacking two waterless technologies. The reactor already cools itself with helium. On the computing side, Nvidia says its DSX facility design cuts cooling water from roughly 2.6 million gallons per megawatt per year to near zero, with warm-water loops replacing the usual chillers.<\/p>\n Run Nvidia’s own number against a conventional 30 MW site and you land around 78 million gallons a year. The pitch here is zero of it, in a desert.<\/p>\n “Through this work with Valar Atomics, Nvidia is exploring how behind-the-meter, waterless advanced nuclear systems could support future AI factories,” John Josephakis, a global vice president at Nvidia, told Reuters.<\/p>\n Note the verb. Exploring. What nobody has published is a construction schedule, an investment figure, or a permit. FOX 13<\/a> reported the future Emery County factory drew big cheers at the event, and has no timeline attached.<\/p>\n Valar itself is a 2023-founded outfit from El Segundo, California, reportedly backed by Oculus founder Palmer Luckey and Palantir CTO Shyam Sankar, with CB Insights data putting its valuation around $2 billion as of March. Money is not the bottleneck here. Licenses are.<\/p>\n None of this lands in a vacuum. Utah spent the spring arguing over Kevin O’Leary’s Stratos data center project in Box Elder County, with public pushback centered on the Great Salt Lake, and Governor Spencer Cox responded with an executive order putting guardrails on data center development.<\/p>\n Emy Lesofski, who runs the state’s Office of Energy Development, told FOX 13 the position is blunt: use the resources responsibly, or the state won’t let you build.<\/p>\n Ward 250 sits in Emery County coal country on purpose, a proving ground pitched at the heart of Cox’s Operation Gigawatt plan to double state power production within a decade. Utah already hosts far thirstier neighbors, like the 9-gigawatt data center campus rising along I-15<\/a> that a state physicist compared to 23 atom bombs of heat per day.<\/p>\n The federal backdrop moved just as fast. Antares went critical first in early June, Valar second on June 18, and Deployable Energy’s Unity completed the set on June 30, three new reactor designs critical in a single month, per the Department of Energy<\/a>. That closes out the July 4 reactor race we covered<\/a>, with days to spare.<\/p>\n The scoreboard, minus the fireworks: one desktop PC ran on fission for an afternoon, one website exists as a stunt, and one 30-megawatt data center exists as a study.<\/p>\n “Nine months ago, this was an empty site,” Taylor said in the DOE’s criticality announcement. That pace is the company’s entire argument, and so far it keeps landing ahead of its own deadlines. Power by July 4 was the stated goal. It happened on July 1.<\/p>\n Whether that pace survives contact with a commercial license is the part no stage demo can answer. When a permit shows up with a wattage on it, that’s the day this stops being a party in the desert and starts showing up in somebody’s water bill. Just not yours, if the design works as advertised.<\/p>\n","protected":false},"excerpt":{"rendered":" Data centers have spent the past year taking the blame for two household problems at once: the power bill and … <\/p>\nOne desktop PC, one reactor, one website<\/h2>\n
The demo proves less than the cheering suggests<\/h2>\n
The 30-megawatt plan is the actual story<\/h2>\n
Utah has already had this fight<\/h2>\n
So what did July 1 actually change?<\/h2>\n