“Japan has quietly taken a radical step in nuclear energy innovation with the deployment of the Yoroi Reactor — a compact, self-contained nuclear power unit designed to operate autonomously in remote or disaster-prone regions. Unlike conventional reactors, Yoroi requires no towers, no operating crew, and no on-site refueling for up to a decade.

Roughly the size of a standard shipping container, the Yoroi Reactor is engineered to be buried underground, where it can deliver stable, zero-emission power without posing the risks historically associated with nuclear energy. Its name, ‘Yoroi,’ which means armor in Japanese, reflects its ruggedized design philosophy — built for resilience, reliability, and total containment.

The reactor leverages molten salt cooling and low-enriched uranium fuel in a sealed, factory-built unit. This approach eliminates the high-pressure water systems used in traditional reactors and significantly reduces complexity. It also means the unit is incapable of melting down — a common fear associated with older nuclear technologies.”

From Tehrani on Tech.