Da Star Wars Wikia :
Uma hipótese razoável poderia ser que Sidious estivesse mais interessado em encontrar e colher a fonte de energia bruta do Lado Negro do que em desenvolver habilidades adicionais - ou talvez que o aumento de poder inferisse o ganho de novas habilidades.After the creation of his Sith Empire, Palpatine established himself in the old Jedi Temple on Coruscant, transforming it into the Imperial Palace. The Jedi had built the palace atop an ancient Sith shrine, in order to neutralize and cap the dark power that sprang from its depths.
During his rule, Sidious sent explorers to unmapped regions of the galaxy to search for the source of the dark side, believing it lay there.