We propose a household power consumption simulator with a compact representation of household occupant behaviors. The proposed simulator models a working cycle of occupant behavior using start time intervals and duration. Such easily interpreted and compact parameter representation simplifies the operation processes of the simulator in trials involving energy management services. Based on a numerical experiment and theoretical analysis, we reveal that the proposed simulator can simulate power consumption more accurately in terms of a temporal drift compared to conventional simulators, in spite of the limitation of model complexity.