A microfusion reactor was a power generation device utilized by several civilizations. Jareth told Korenna Mirell, that he couldn't understand why the regressives wanted to live their lives without microfusion generators or a communications interlink. (VOY: "Remember") In 2373, Crewmen Pechetti and Stolzoff were tasked with bringing Empok Nor's microfusion reactor, located in the habitat ring, back online in order to assist in boosting power to the station's induction grid. (DS9: "Empok Nor")