The successful Nasdaq debut of X-energy, backed by Amazon, highlights the growing link between artificial intelligence, data-centre expansion and renewed investor interest in small modular nuclear reactors.
X-energy’s successful Nasdaq debut has underlined a significant shift in the relationship between technology, energy security and nuclear investment. The Rockville, Maryland-based company, backed by Amazon, raised $1.02 billion in an upsized initial public offering, selling 44.3 million shares at $23 each, above the previously marketed $16-$19 range. Its shares rose sharply on their first day of trading, giving the company a market valuation of about $11.9 billion, according to Reuters reporting on the IPO.
The company is developing small modular reactors, or SMRs, with its flagship Xe-100 design using helium rather than water as a coolant. The concept differs from traditional large nuclear plants in both scale and method of construction. SMRs are intended to be built in standardised modules, with a larger share of production carried out in factories before installation on site. In theory, this should reduce construction time, improve cost predictability and allow power capacity to be added in smaller increments.
The market response to X-energy’s IPO reflects more than enthusiasm for a single company. It shows how nuclear power is being reassessed by investors at a time when electricity demand from artificial intelligence, cloud computing and data centres is increasing. These facilities require large volumes of stable, round-the-clock power. Intermittent renewable sources can form part of the supply mix, but they do not on their own resolve the problem of continuous baseload supply for digital infrastructure.
Amazon’s role is central to the X-energy story. In October 2024, the company led an investment of about $500 million in X-energy and agreed to support the deployment of more than five gigawatts of new nuclear power projects in the United States by 2039. Amazon said the initiative would help meet growing energy demand while supporting its target of net zero carbon emissions by 2040, according to X-energy’s announcement of the Amazon investment.
The wider technology sector is moving in the same direction. Google has signed an agreement with Kairos Power, while Microsoft has been linked to nuclear power through the planned restart of capacity at Three Mile Island. The pattern suggests that large technology companies are increasingly prepared to act not only as electricity consumers, but also as anchor customers and strategic investors in new power generation.
This changes the financing model for nuclear energy. Historically, nuclear power stations were financed largely through state-backed programmes or heavily regulated utility structures. The emerging SMR model depends more heavily on private capital, long-term purchase agreements and corporate demand. For investors, the presence of a large buyer such as Amazon offers a degree of revenue visibility that would otherwise be difficult for an unproven reactor developer to provide.
There are, however, substantial risks. No commercial SMR is yet operating in the United States. X-energy still has to complete regulatory approval, build its first reactors and demonstrate that its technology can be delivered on time and at competitive cost. The company also faces competition from NuScale, Oklo, TerraPower and other advanced nuclear developers. The first firms to secure licences and operate commercially are likely to gain a considerable advantage, but the sector remains exposed to regulatory, engineering and financing delays.
For Ukraine, X-energy’s listing has relevance beyond Wall Street. Ukraine is already one of Europe’s most nuclear-dependent states, with nuclear power providing a large share of electricity generation, particularly during periods of high demand. The country has also lost a significant part of its generating capacity as a result of Russia’s full-scale invasion, creating a long-term need for secure, decentralised and resilient electricity infrastructure.
Ukraine has been exploring SMRs as part of its post-war energy strategy. In October 2025, the Ministry of Energy said it was working with partners on a roadmap for SMR deployment, including the Phoenix and Hephaestus projects, which examine the potential use of SMRs at decommissioned thermal power plant sites and in energy-intensive industries. Energoatom and Holtec International have also discussed co-operation on SMR components and possible deployment in Ukraine, according to Ukraine’s Ministry of Energy.
The strategic argument is clear. Affordable and reliable electricity is a basic condition for industrial recovery, data-centre investment, advanced manufacturing and cleaner metallurgy. For Ukraine, SMRs could offer a route to rebuild capacity while using existing nuclear expertise and parts of the country’s energy infrastructure. Whether this can be achieved will depend on security conditions, regulation, financing, localisation of production and public confidence.
X-energy’s IPO does not prove that SMRs are ready for mass deployment. It does show that nuclear energy has returned to the centre of private investment debate. The driver is no longer only climate policy. It is also the commercial requirement for stable power in an economy increasingly shaped by artificial intelligence, cloud computing and energy-intensive industry.
