Methods, systems and hardware monitors for verifying that an integrated circuit defined by a hardware design meets a power requirement including detecting whether a power consuming transition has occurred for one or more flip-flops of an instantiation of the hardware design; in response to detecting that a power consuming transition has occurred, updating a count of power consuming transitions for the instantiation of the hardware design; and determining, whether the power requirement is met at a particular point in time by evaluating one or more properties that are based on the count of power consuming transitions.