Nuclear power's latest big-money moment arrived Monday as Valar Atomics confirmed a $1 billion equity round led by Sequoia, with the startup's founder and CEO Isaiah Taylor announcing the deal alongside a $200 million credit line from Erebor and other banks. The funding vaults the small modular reactor (SMR) builder into the upper echelon of private nuclear ventures, even as it declined to disclose its valuation—though Bloomberg pegged it at $6 billion. Main Developments Sequoia partner Shaun Maguire is joining Valar's board as part of the round, which also drew participation from Apandion Capital, Atreides Management, Conviction, Dream Ventures, HOF Capital, Point72, Riot Ventures, Snowpoint Ventures, and Valor Equity Partners. The company plans to use the capital to reach its next milestone: manufacturing fleets of its SMRs, which are factory-built power plants designed to be cheaper and faster to deploy than traditional reactors. Read also: 5 Key Facts About Base Power's $1B Bet on Home Batteries Valar's technology appears to be advancing quickly. In June, the company said its Ward 250 reactor successfully powered an Nvidia Blackwell system, and it announced a deal with Nvidia to develop a waterless 30MW AI factory. The startup claims its reactors generate engineering, manufacturing, and operational data that feed back into improving next-generation designs, accelerating development cycles. Background Valar's timeline highlights the pace it's chasing. The NOVA core took two years to complete, while Ward 250 went critical in just seven months. The company says that with each reactor built, the "tick rate"—the time between milestones—shrinks, eventually enabling production of tens, then hundreds, then thousands of reactors annually. That ambition places Valar in a crowded field. Over the past few months, Antares raised $470 million and X-energy pulled in $1 billion through its IPO, underscoring a surge of investor interest in advanced nuclear as a clean-energy solution. Why It Matters The round signals growing confidence that SMRs can address two pressing demands: decarbonizing power grids and meeting the voracious electricity needs of AI data centers. Valar's partnership with Nvidia, specifically targeting waterless operation, positions it to serve AI infrastructure without straining water resources—a key differentiator in arid regions. For Sequoia, backing a nuclear startup at this scale is a bet that factory-built reactors can overcome the cost and schedule overruns that have plagued traditional nuclear projects. If Valar delivers on its manufacturing vision, it could reshape how power is generated for both industrial and tech customers. What's Next With the fresh capital, Valar now moves toward scaling production of its SMRs, with the next milestone being fleet manufacturing. The company hasn't disclosed a timeline for commercial deployment, but its rapid progress on Ward 250 suggests it could move faster than traditional reactor projects. Observers will be watching whether Valar can maintain its development velocity while navigating regulatory hurdles and supply chain challenges. The Nvidia partnership also raises expectations for near-term AI factory deployments, though no specific dates have been announced.