less Clark Kent finds the Green  Kryptonian Crystal at the Fortress of Solitude, he later returns  with his powers restored as Superman and no explanation is given as  to how he got them back. In the shooting script for the film, the  Green Kryptonian Crystal is actually what gives Superman his powers  back. When Clark grabs the Crystal, it glows and pulsates with a  powerful energy that is stored within and Clark trembles as its  Kryptonian power passes into his body, giving him back his powers.  The scene with the Crystals energy actually shown restoring Clarks  powers, though, was never filmed and it is only implied at the  Crystal restores his powers in the final cut.