This paper presents a bottom-up modelling approach for stochastic production of electricity consumption profiles in households. It represents a preliminary work on individual appliance use modelling in households, as part of a bottom-up simulation to assess the impact of household consumption, and changes to consumption patterns and behavior, on the overall energy grid. By collecting household electricity consumption data, a model is developed based on daily activity profiles for individual appliances. The domestic load model obtained from simulating electricity consumption for household appliances will enable the large-scale simulation of multiple households to gain insight into individual household implications of demand-side load management strategies, as well as the combined effects on the electricity grid.