1. Step Up (2006)
2. Step Up 2: The Streets (2008)
3. Step Up 3D (2010)
4. Step Up: Revolution (2012)

They do not step up energy. They can step up voltage.

yes,exept that step up 3D is in 3D while step up 3 is in 2D

No. You can not step up power with a transformer. You can step up voltage, while stepping down current, or you can step up current, while stepping down voltage, but you cannot step up (or down) power.

As of right now, there as been four Step up movies released since their introduction in 2006. The titles are Step Up, Step Up 2: The Streets, Step Up 3-d and the recently released Step Up Revolution.