Ampera makes 3D-printed microreactor module

Ampera is developing subcritical thorium-based microreactor systems that are energy dense and do not require refuelling. Through its proprietary tri-structural isotropic (TRISO) fuel platform, neutron-source technology and advanced additive manufacturing, it aims to deliver scalable, factory-built, rapidly deployable, emission-free power for data centres, defence, industrial and maritime applications.

The company's first nuclear module unit, which includes the core and pressure vessel, was unveiled on 1 July at Ampera's innovation centre in Palm Beach Gardens, Florida, with more than 100 people, including local officials, business leaders and employees, in attendance.

"This next-generation nuclear core and pressure vessel sets the foundation for factory-built, mass-produced nuclear energy," said Ampera founder and CEO Brian Matthews. "The advanced technology and additive manufacturing used demonstrate a clear commercial path for new nuclear technology coming to market in an accelerated manner."

Ampera's spherical monolithic gyroid core is 3D printed with silicon carbide and designed for up to 30 years of life without refuelling.

In June, Ampera announced it established an Australian subsidiary to secure thorium supply and support US advanced nuclear fuel production.

The company said its core-for-life, ultra-safe modular nuclear systems are built with inherent stability by design. Safety is achieved through core design and physics characteristics, reducing reliance on active systems and operator intervention. Ampera's nuclear systems are expected to provide up to 30 MWe of power, with larger configurations planned.

"Our reactors are built for the markets that need power the most: AI data centres, defence, industrial and maritime," Matthews said. "We expect to be the first company to industrialise factory-built nuclear power with near-term deployment timelines."

In February, Ampera submitted a formal letter to the US Nuclear Regulatory Commission indicating its desire to begin the pre-application process for its factory-fabricated, containerised microreactor, and in April, it entered into a strategic collaboration with Monaco-based shipping company Scorpio Tankers Inc to jointly develop and commercialise advanced microreactors for marine, shipping and related maritime applications. The same month, Ampera opened its global headquarters in Florida. It has said it plans to produce TRISO thorium kernels at another location in the state.