Power Generation is a stat already applied to your character. It ranges from 90%-130% base power generation from Bronze to Diamond Characters. It can only be upgraded from the Talent Tree, Feats of Strength or Equipment such as Raiden's Storm Hat, Liu Kang’s Red Headband or Ermac's Soul Medallion. The icon is 3 lines rising up from left to right, almost resembling Wi-Fi icons from certain phones.