Designed to meet the demands of today.

engineer wearing safety glasses adjusts tubing in Liquid Metal system

Fission Technology

Zap's advanced fission reactors unlock the power of the atom to provide carbon-free, on-demand energy tailored to the site and the customer. No billion-dollar megaprojects. No multi-decade construction timelines.

  • Engineer working on a bunch of tubing and equipment with a welding mask on his head but open visor
  • metal calipers and metal tubing sit on breadboard in industrial setting
  • Uranium 92 U
  • Green lights lit up on a console

Sodium-cooled modular reactors

Introducing the ZMR, Zap's compact, factory-built, modular reactor. Zap Modular Reactors advance, improve on, and simplify the designs of past pioneering sodium-cooled nuclear technologies by applying modern analysis and design, advanced manufacturing techniques, up-to-date standards, improved regulatory pathways, and digital engineering.

A tall skinny nuclear reactor animation image
  1. 01

    U-Zr metallic fuel in a compact, high-efficiency design

    Zap’s modular fission reactors use uranium-zirconium metallic fuel. Once critical, the uranium sustains a controlled chain of fission reactions that generate a steady flow of energetic neutrons. Zirconium provides structural stability and improved heat conductivity.

  2. 02

    Liquid sodium cooling

    Liquid sodium circulates through the reactor core, changing the neutron energy into heat energy. Its high thermal conductivity and low neutron absorption make it ideal for safely transferring energy away from the core and out to the plant.

  3. 03

    3-4 meter core scale, up to 25 MW electric output

    Though only three to four meters in diameter, each module can produce up to 25 MW of electricity — enough to reliably power a large data center, industrial hub, military base, or small community.

  4. 04

    Factory-built and transportable

    Construction focused at the factory dramatically improves economics and ensures consistent quality. Units ship directly to site, reducing costly on-site construction and making nuclear power accessible to more locations with lower capital requirements.

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Walk-away safe

The ZMR is inherently safe, preventing runaway reactions. ZMRs feature fully passive safety systems that use the sodium coolant's natural properties to automatically shut down and cool the reactor — no human intervention or external power required.

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