X-energy Shares Jump 27% in IPO Debut Amid AI-Driven Nuclear Demand

X-energy shares surged 27% in their market debut after the company raised more than $1 billion in its initial public offering, as strong investor demand tied to artificial intelligence-driven energy needs pushed the stock well above its offer price, CNBC reported.

The advanced nuclear reactor developer priced its IPO at $23 per share, above its initial target range of $16 to $19, and opened trading at $30.11 before closing at $29.20. The listing marks the largest nuclear public offering on record, reflecting growing investor interest in energy infrastructure supporting AI and electrification trends.

IPO Performance and Capital Raised

X-energy’s strong debut highlights robust demand for companies positioned at the intersection of energy and artificial intelligence. The company raised over $1 billion through its offering, significantly upsized from initial expectations due to high investor appetite.

The stock’s 27% gain on its first trading day underscores the market’s positive reception, with investors betting on long-term growth in nuclear energy as a stable and scalable power source for data centers and industrial applications.

Prior to its public listing, X-energy had already secured more than $1.4 billion in funding, including a $700 million Series D round completed in November. Backers include major institutional investors and technology-linked funds.

The company’s flagship Xe-100 reactor has a capacity of 80 megawatts and can be deployed in modular clusters to generate up to 960 megawatts. The design is based on high-temperature gas-cooled reactor technology, which enables not only electricity generation but also industrial applications such as chemical production.

Unlike traditional nuclear reactors in the United States, which are primarily light-water based, X-energy’s design focuses on flexibility and scalability. The high operating temperatures allow for broader use cases, particularly in sectors that are difficult to decarbonize.

This technological differentiation positions the company to address both power generation and industrial energy needs, aligning with broader global decarbonization efforts.

Business Model and Project Pipeline

X-energy plans to generate revenue primarily through licensing its reactor technology rather than owning and operating nuclear plants. In addition, the company will produce and sell nuclear fuel from its fabrication facility in Oak Ridge, Tennessee, where construction began in 2025.

Despite not yet beginning construction on any reactor facilities, the company has secured a project pipeline exceeding 11 gigawatts. In March 2025, X-energy and Dow submitted a construction permit application to the U.S. Nuclear Regulatory Commission for a proposed project in Texas. The approval process is expected to take approximately 18 months and represents a key step toward commercial deployment.

The company is also collaborating with Amazon to deploy 5 gigawatts of capacity across the United States by 2039, including an initial 320-megawatt project with Energy Northwest.

Industry Context and AI Demand

The IPO comes amid a resurgence of interest in nuclear energy, driven in part by the rapid expansion of artificial intelligence infrastructure. Data centers powering AI models require significant and reliable energy supplies, prompting increased focus on nuclear as a low-carbon, baseload solution.

The company had previously explored a SPAC merger but abandoned the plan in 2023 in favor of a conventional listing.

With strong investor backing, a growing project pipeline, and increasing demand for energy solutions tied to AI, X-energy’s market debut reflects broader shifts in both the energy and technology sectors.

The company’s performance in public markets will be closely watched as it moves toward project execution and regulatory approvals, key milestones that will determine its long-term growth trajectory.