X-energy Files for $800M IPO Backed by Amazon

▼ Summary
– X-energy began its IPO roadshow with a target share price of $16–$19, which could raise up to $814 million at the high end.
– The company is benefiting from increased demand for nuclear power driven by AI data centers and broader electrification.
– Amazon is a major investor, having led a $500 million funding round and pledged to buy up to 5 gigawatts of power from X-energy by 2039.
– X-energy uses a high-temperature, gas-cooled reactor with TRISO fuel, a design considered safer than traditional nuclear fuels.
– The company is involved in an unresolved patent dispute with Standard Nuclear, which acquired assets from the bankrupt Ultra Safe Nuclear Corporation.
The nuclear energy sector is witnessing a significant capital event as X-energy, a developer of advanced reactor technology, has commenced its investor roadshow with plans for an initial public offering. The company aims to price its shares between $16 and $19, a move that could raise approximately $814 million at the higher end. This IPO arrives amid a resurgent interest in nuclear fission, driven largely by soaring electricity demand from AI data centers and broader societal electrification efforts.
A major pillar of X-energy’s financial backing comes from Amazon, which led a substantial $500 million funding round. The e-commerce and cloud computing giant has also committed to purchasing up to 5 gigawatts of nuclear power from the company by 2039, providing a significant future revenue anchor. For existing investors who have contributed roughly $1.8 billion, this public listing offers a welcome path forward. It follows a failed attempt to go public via a reverse merger with a SPAC in 2023, a deal that collapsed as the market for such vehicles cooled.
The company’s core technology is a high-temperature, gas-cooled reactor (HTGR). Its design utilizes TRISO fuel, where uranium particles are encased in ceramic and carbon spheres, cooled by helium gas. This configuration is considered inherently safer than traditional fuel arrangements, though it remains in limited commercial use. X-energy’s path is not without legal hurdles. The company is currently involved in a patent dispute related to its fuel fabrication technology with the now-bankrupt Ultra Safe Nuclear Corporation (USNC). X-energy alleges patent infringement, a matter it states was not adequately resolved during USNC’s bankruptcy proceedings, which resulted in its assets being sold to form a new entity called Standard Nuclear.
Globally, the development of new nuclear reactors outside of China has largely stalled, plagued by delays and budget overruns. A new generation of startups, including X-energy, believes that small modular reactor (SMR) designs can overcome the challenges of traditional, large-scale plants. However, none of these SMR companies have yet constructed an operational power plant. Several are working toward a regulatory deadline set for July 4 of this year, though many are expected to miss that target. The more significant milestone is achieving criticality, the point at which a sustained nuclear fission chain reaction begins.
The journey from that first critical reaction to operating profitable power plants will be lengthy. While mass manufacturing is seen as the key to reducing costs, the process of scaling production to achieve meaningful economies typically takes about a decade. Furthermore, the total number of reactors these companies plan to build, while ambitious, may still be insufficient to fully capture the cost advantages of standardized production. X-energy projects that once its manufacturing process matures to an “Nth-of-a-kind” stage, it can reduce costs by 30% compared to its first reactor. The final cost of that initial unit remains a pivotal variable, one that will critically shape the company’s long-term viability.
(Source: TechCrunch)


