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Image Credits:Matt Champlin / Getty Images10:55 AM PST · November 24, 2025
Nuclear startup X-energy raised $700 cardinal successful a Series D found, the institution told TechCrunch.
The caller fundraise comes little than a twelvemonth aft it expanded its Series C from $500 cardinal to $700 million, bringing the full raised successful the past twelvemonth oregon truthful to $1.4 billion, a sizable magnitude adjacent successful the heady satellite of atomic powerfulness startups. X-energy has raised $1.8 billion, to date.
X-energy said the caller infusion volition assistance physique the proviso concatenation for its tiny modular reactors (SMR). So far, the startup says it has orders for 144 SMRs susceptible of generating 11 gigawatts of electricity. Customers see Amazon, Dow, and British vigor institution Centrica.
The caller circular was led by Jane Street, which joined arsenic an capitalist successful the expanded Series C. Other investors participating see Ares Management funds, ARK Invest, Corner Capital, Emerson Collective, Galvanize, Hood River Capital Management, NGP, Point72, Reaves Asset Management, Segra Capital Management, and XTX Ventures.
X-energy is processing high-temperature, gas-cooled reactors, a benignant much precocious utilized successful Japan and China. Each of its Xe-100 reactors tin make 80 megawatts of electricity, and they are fueled by billiard ball-sized, carbon-coated pebbles containing uranium particles. Inside the reactor, helium state flows implicit the pebbles, collecting heat, which is transferred to a steam turbine to make electricity.
Like different atomic startups, X-energy has ridden a question of involvement from tech companies and information halfway developers.
Amazon’s Climate Pledge Fund led the archetypal installment of the startup’s Series C. The tech institution besides announced past twelvemonth it would bargain more than 600 megawatts of atomic capableness successful the Pacific Northwest and Virginia, with the reactors coming online successful the aboriginal 2030s. Altogether, Amazon’s woody with X-energy could spot arsenic overmuch arsenic 5 gigawatts deployed by 2039.
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X-energy is successful a contention with several different SMR startups to resuscitate the atomic manufacture successful the United States. While galore of the designs look promising, only a handful SMR powerfulness plants person been built to date, nary of which are successful the United States.
Tim De Chant is simply a elder clime newsman astatine TechCrunch. He has written for a wide scope of publications, including Wired magazine, the Chicago Tribune, Ars Technica, The Wire China, and NOVA Next, wherever helium was founding editor.
De Chant is besides a lecturer successful MIT’s Graduate Program successful Science Writing, and helium was awarded a Knight Science Journalism Fellowship astatine MIT successful 2018, during which clip helium studied clime technologies and explored caller concern models for journalism. He received his PhD successful biology science, policy, and absorption from the University of California, Berkeley, and his BA grade successful biology studies, English, and biology from St. Olaf College.
You tin interaction oregon verify outreach from Tim by emailing tim.dechant@techcrunch.com.
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