Each Greater Power can only be used once per game day.
http://www.uesp.net/wiki/Skyrim:Powers#Greater_Powers
Game time scale is 20 times faster than real time, so a day is 24 hours divided by 20 = 1.25 hours of real-time to recharge a Greater Power. https://www.youtube.com/v/JaAd8OuwwPk&autoplay=1&start=25&end=27 I don't want to use "sgtm" because it makes physics wonky and I'm in a location where I can't wait (Helgen escape).
So, is there a way—even via exploit, console command, or mod—to cleanly instantaneously cool down a Greater Power? Alternatively, is there a way to be able to use the wait option during the Helgen escape?
Best Answer
LFox' 'No Racial / Standing Stone / Vampire / Werewolf Form / Nightingale Power Cooldown' set of mods should be able to allow the game to do that. (Those mods don't support the Dawnguard and Dragonborn DLC greater powers, though.)
The mod, Shouts & Powers Enhanced works with DLC greater powers, but also modifies dragon shout cooldown.