October 30, 2025 — Hadron Energy, Inc. has unveiled details of its 10 MWe Micro-Modular Reactor (MMR), the “Hadron Halo,” which features engineering and safety innovations.
The Hadron Halo is a compact, factory-built light-water reactor providing continuous, carbon-free power for up to 10 years without refueling, with a 50-year useful life. It uses familiar pressurized-water reactor (PWR) technology. Ross Ridenoure, Chief Nuclear Officer of Hadron Energy, stated that utilizing already-approved light-water reactor technology creates shorter licensing timelines, lower costs, and faster deployment of reliable clean power.
Each Hadron Halo unit will produce 10 MWe and occupy less than one acre. The sealed reactor core will operate at lower power density, reducing mechanical stress and extending component life. All primary-loop equipment is housed inside a single pressure vessel, minimizing external piping and eliminating the possibility of a large-break coolant accident. The reactor will be fueled by Low-Enriched Uranium Plus (LEU+), allowing Hadron to achieve a 10-year fuel cycle. Each unit will be assembled and tested in under a year, shipped by truck or rail, and installed with minimal on-site work.
Hadron’s technology development follows a recently announced $1.2Bn business combination agreement with GigCapital7 Corp. (Nasdaq: GIG).
Ross Ridenoure, Chief Nuclear Officer of Hadron Energy
