In the recent past, much attention has been given to models for generation and transmission equipment. The representation of the loads has received comparatively less attention and continues to be an area of greater uncertainty. There is therefore a need for studies into the development of power system load modelling techniques. Accurate modelling of loads continues to be a difficult task due to several factors, for example, lack of precise information for the composition of the load and changing load composition with time delays. Electric analysts and their management require evidence of the benefits of improved load representation in order to justify the effort and expense of collecting and processing load data, as well as to modify computer program load models. This paper seeks to develop an aggregation model that will be used to aggregate the industrial load of Bamburi Cement Company. The effect of power factor improvement at the load on voltage stability will also be analyzed.