A Plasma Reactor, also called a Generatorium in High Gothic, is a form of advanced generator used by the Imperium of Man to power its voidships, planetary settlements, hive cities, void stations, some vehicles and other large installations. It produces electric power in the form of a high-temperature phase of matter known as plasma generated by a nuclear fusion reaction. Plasma Reactors come in a wide variety of sizes, capacities, patterns and marks officially approved by the Magi of the Adeptus Mechanicus, and form the core of the primary Imperial subluminal voidcraft propulsion system known as a Plasma Drive.
- Rogue Trader: Battlefleet Koronus (RPG), pp. 31-33