Not dissipated. Merged. That's what the version I read said anyway. Else how do you explain why he became so powerful inner power-wise after "dissipating" all of those energy streams and only sucked one guy (Ha Bai Zi?)? He was "dissipating" them but it was actually merging them to become his own. Just like what he would do to merge the new energy he sucked from another person to his own energy.