The Nuclear Reactor processes Uraninite Crystal-based Reactor Rods into Energy for use by a Seabase. The reactor is constructed with the Habitat Builder, and can only be placed in the centre of a Multipurpose Room. The Nuclear Reactor generates energy at a rate of 250 power units per minute (4.166667 per second) regardless of how many reactor rods are installed. Each reactor can store a maximum of 2500 energy units. The Reactor can hold a maximum of four reactor rods, which will become depleted reactor rods once fully consumed.