In a landmark moment for the advanced nuclear sector, X-Energy, Inc. (NASDAQ: XE) has completed its initial public offering, raising approximately $1.02 billion in gross proceeds. The Maryland-based developer of small modular reactors (SMRs) and advanced nuclear fuel priced its upsized offering of roughly 44.3 million Class A shares at $23 per share—well above the initial $16–$19 range—on April 23, 2026. Shares begin trading today on the Nasdaq Global Select Market under the ticker “XE.”
The IPO comes at a pivotal time as surging electricity demand from AI data centers, manufacturing reshoring, and electrification drives renewed interest in reliable, carbon-free baseload power. X-Energy’s successful debut follows more than $1.8 billion in prior private capital raised and positions the company to accelerate the commercialization of its next-generation nuclear technology.
X-Energy’s Technology: The Xe-100 High-Temperature Gas-Cooled Reactor
X-Energy specializes in Generation IV high-temperature gas-cooled reactors (HTGRs) and proprietary TRISO-X fuel. Its flagship product, the Xe-100, is a pebble-bed SMR designed to deliver 80 megawatts electric (MWe) or 200 megawatts thermal (MWt) per module—or a flexible combination of both electricity and high-temperature process heat.
Key advantages include:Intrinsic safety: Helium-cooled, graphite-moderated pebble-bed design with TRISO fuel particles that can withstand extreme temperatures without meltdown risk.
Modularity: Deployed in “four-packs” (320 MWe) or larger plants up to 12 units, with independent modules that can come online sequentially.
Versatility: High operating temperatures enable not only electricity generation but also industrial steam production, hydrogen manufacturing, and desalination—expanding nuclear’s role beyond traditional grid power.
Efficiency and siting flexibility: Air-cooling options reduce water use; compact footprint suits co-location with data centers or industrial facilities.
X-Energy also operates a TRISO fuel fabrication facility in Oak Ridge, Tennessee, positioning it as one of the few companies controlling both reactor design and fuel supply.
Major Announcements and Strategic Partnerships
X-Energy has secured high-profile commercial commitments:Amazon: The tech giant led a $500 million Series C-1 funding round (later upsized) and made a direct equity investment. Amazon has committed to purchasing up to 5 gigawatts of X-Energy nuclear power by 2039 to support its data center and AI operations. The partnership includes an initial four-unit (320 MW) project with regional utility Energy Northwest in central Washington (the “Cascade” project), with potential expansion to 960 MW. Amazon is providing direct funding for early development.
Dow: X-Energy is advancing a demonstration project in Texas to supply clean electricity and high-temperature process steam to Dow’s chemical manufacturing operations. This project has secured up to $1.2 billion in cost-sharing support from the U.S. Department of Energy’s Advanced Reactor Demonstration Program (ARDP).
Talen Energy: A recent Letter of Intent to evaluate gigawatt-scale deployment of Xe-100 plants in the PJM market to serve data centers and other large loads.
These deals give X-Energy a combined customer pipeline exceeding 11 GW, one of the strongest in the SMR industry.
Amazon’s Role as Backer: Powering Data Centers and Beyond
Amazon’s involvement goes far beyond financial backing. As a hyperscaler with massive power needs for cloud and AI infrastructure, Amazon views X-Energy’s technology as a strategic solution for 24/7 carbon-free electricity that matches the always-on reliability of nuclear power.
Investment and manufacturing rights: Amazon secured priority allocation of reactor manufacturing slots and favorable pricing through 2039.
Project focus: The Energy Northwest Cascade project will supply power to Amazon data centers in the Pacific Northwest, with the utility acting as owner/operator. Additional deployments are planned to scale rapidly.
Behind-the-meter vs. consumer/grid projects?
X-Energy’s reactors are optimized for large, high-intensity loads such as data centers and industrial facilities—often via co-location or dedicated power purchase agreements (PPAs). “Behind-the-meter” arrangements (direct connection bypassing the broader grid) are ideal for hyperscalers seeking maximum reliability and control, as seen in several Amazon data center strategies. However, X-Energy’s technology is not limited to behind-the-meter only. Projects like Energy Northwest involve a public utility selling power through PPAs or grid integration, potentially serving a mix of industrial, commercial, and (indirectly) retail customers. Partnerships with utilities and evaluations in organized markets like PJM open the door to broader grid support. The company is not focused on direct residential/consumer retail sales but on powering the modern economy’s biggest energy users while contributing clean baseload capacity to regional grids.
Outlook
With IPO proceeds earmarked for reactor development, fuel fabrication scale-up, and commercialization, X-Energy aims to deliver its first commercial reactors in the early 2030s. The company’s progress—bolstered by federal support, hyperscaler demand, and proven Gen-IV technology—signals a new chapter for American nuclear innovation.
As CEO Clay Sell noted in recent interviews, Amazon’s commitment has been a “game changer” in anchoring the company’s path to market.Stay tuned to Energy News Beat for updates as X-Energy begins trading and advances its reactor deployments.
