X-energy, a nuclear technology startup, announced Monday that it has received federal authorization to construct its first four commercial reactors. The Nuclear Regulatory Commission (NRC) approved the construction permit application for the Xe-100 units, which will be installed at a Dow chemical plant in Texas. This approval represents the first time an advanced nuclear reactor has been cleared for construction at an industrial facility in the United States.
Xe-100 Reactors at Dow Chemical Site
Each of the four reactors is designed to generate 80 megawatts of electricity and 200 megawatts of heat. The facility will utilize X-energy’s proprietary design, which circulates helium gas over fuel pellets containing uranium. The company states that this configuration offers enhanced safety features compared to many existing reactor models. However, the project is not expected to become operational until the early 2030s, reflecting the long timelines typical for nuclear infrastructure.
The U.S. nuclear industry has placed significant expectations on small modular nuclear reactors to modernize energy production. Proponents argue that shrinking reactor components will accelerate construction schedules and lower overall costs. Despite these theoretical advantages, no small modular reactor is currently in operation within the United States. X-energy’s approval is a critical test case for whether these efficiency promises can be realized at scale.
Safety Concerns and Market Reaction
The rapid pace of the NRC’s decision has drawn scrutiny from safety advocates. Edwin Lyman, director of nuclear power safety at the Union of Concerned Scientists, criticized the regulatory body for deferring critical safety evaluations. He stated that the NRC pushed consideration of essential safety questions to a later date, arguing these issues should have been fully resolved before granting construction permission.
Financial markets have responded cautiously to the news. X-energy’s stock price experienced a slight increase following the announcement, but it remains less than half of its initial public offering price from April. The company raised $1 billion in that initial public offering, fueled by strong interest from technology giants seeking reliable power sources. Amazon’s Climate Pledge Fund led a $500 million Series C-1 funding round and has committed to purchasing 5 gigawatts of capacity from X-energy.
Investor enthusiasm has cooled since the initial public offering, as the reality of nuclear construction costs sets in. Building nuclear plants is capital-intensive and time-consuming. While X-energy aims to reduce these barriers with its modular approach, the first reactors are likely to carry high price tags. The company’s ability to deliver on its cost and timeline promises will be closely watched by stakeholders and the broader energy sector.
Source: TechCrunch
