Abstract: Analysis of power supply noise in simulations of a design of a circuit can use per instance dynamic voltage drops (DVD) in timing analyses so that the simulated DVD values on a per victim cell basis can accurately guide the timing analysis on each victim instead of a global DVD for all victims during the timing analysis. In one embodiment, a method can: determine, during a power analysis simulation, a representation of an energy lost, during each switching window at each output of each victim cell, at one or more power supply rails of each of the victim cells in the set of victim cells due to aggressors in the design; and provide the representation of the energy lost separately for each victim cell to a timing analysis system. The representation can be a rectangle having a width defined by a switching window of a victim's output.