The Hadron Energy Halo Micro-Modular Reactor (MMR) is a factory-built, 10-megawatt-electric (MWe) light-water SMR (small modular reactor) designed to provide clean, continuous power. It is a Pressurized-water reactor (PWR) using ordinary water as coolant and moderator and its fuel is Low-Enriched Uranium Plus (LEU+) with a multi-year fuel cycle.