Plasma display apparatus and driving method thereof

A plasma display apparatus which can increase driving efficiency of a plasma display panel includes a plasma display panel comprising a plurality of electrodes, a driver for driving the plurality of electrodes, and a sustain pulse controller for controlling the driver and for adjusting at least one of an ER (energy recovery)-Up time period and an ER (energy recovery)-Down time period of a sustain pulse supplied to the plurality of electrodes depending on an average picture level (APL) in a sustain period. Adjusting the pulse rise and fall times according to picture level ensures that energy recovery is not affected for high APL and that instability is prevented for low APL.