X-energy is pioneering the development of small modular reactors (SMRs) specifically designed to cater to industries with substantial energy demands, such as concrete, plastics, chemicals, and fibers manufacturing. These sectors require significant amounts of high-temperature heat, which traditional renewable sources like solar panels and wind turbines cannot adequately provide. Often, heavy industrial processes rely on fossil fuels to meet their thermal needs, making a transition to cleaner alternatives essential.
Conventional nuclear reactors have limitations due to their reliance on water for cooling, which restricts their operating temperatures. X-energy’s innovative Xe-100 reactor addresses this challenge by utilizing helium gas as a coolant. This approach not only allows for higher operational temperatures but also reduces the pressure requirements compared to traditional water-cooled systems. The Xe-100 can produce super-heated steam to directly supply heat or generate approximately 80 megawatts (MW) of electricity, marking a significant step forward in nuclear technology.
The Xe-100 reactor employs advanced TRISO (tristructural-isotropic) fuel technology, known for its resilience against corrosion and melting. This fuel is continuously added to the reactor, ensuring a consistent energy output while also promoting safety. In case of power loss, the reactor’s design inherently mitigates risks by slowing down the nuclear reaction. Beyond conventional industrial usage, the Xe-100 can also benefit sectors like oil recovery—notably in tar sands extraction—by providing the necessary heat without relying on extensive natural gas supplies.
Despite the promising technology, challenges remain for X-energy. The only existing commercial helium-cooled reactors are in China, where operational issues have been reported. X-energy asserts that its vertically integrated fuel supply will lead to reliable performance over a projected reactor lifespan of 60 years. However, economic viability is still unproven; costs associated with SMRs can be significantly higher than solar energy. Additionally, while TRISO technology enhances safety and nonproliferation efforts, it may generate more nuclear waste than traditional reactors.
Looking ahead, X-energy is making strides in regulatory compliance, having received a fuel fabrication license for its TRISO-X pebbles, with its first production facility slated for completion in 2028. The company is also pursuing projects to deploy the Xe-100 reactor to power a Dow chemical facility in Texas, which could become operational by the early 2030s. Concurrently, X-energy is collaborating with Amazon to develop a cluster of four Xe-100 reactors in Washington, along with a larger fleet in the UK, both targeting electricity generation in the next decade.
Source: X-energy and its helium-cooled nuclear reactors via MIT Technology Review