Psychic energy

Psychic energy was a type of energy that powered (or was powered by) mental processes.

Overview
Both the Nestene Consciousness (DW: Spearhead from Space) and the planet Siralos are made of pure psychic energy. (VG: Destiny of the Doctors) Silverberg energy was present when there are signs of psychic energy. (EDA: Alien Bodies)

The destruction of other planets by Zanak liberated energy of many different kinds, including some on the psychic spectrum. This powered the psychic abilities of the Mentiads. K9 Mark II had the power to track mental wavelengths of psychic energy. (DW: The Pirate Planet)