The Caretaker's array was a large space station in the Delta Quadrant not far from Ocampa. It was 75,000 light-years from the Badlands and 50,000 from the galactic core. Built by the Nacene, and powered by a tetryon reactor the array served as a location from which the Caretaker could protect and serve the Ocampa. It acted as an energy source for the underground Ocampa settlements and continually pumped energy into the Ocampa city for nearly 1,500 years.