The Nexus is the hub of every lasting Protoss settlement and is equally the centre of economy for its base and all neighbouring ones. Responsible for the production of the multi-tasked Probes, it is essential for any form of survival and technological growth. Due to its importance, the Nexus will not go unpowered if it is not in the Psionic Matrix, as it most probably has its own internal power source to sustain it at all times. The Nexus is the Protoss structure which takes the longest to Warp In.