Critical Capacity Analysis for Optimal Sizing of PV and Energy Storage for a Household

This paper examines how the selection of the PV rating and energy storage capacity affects the economic benefits for a grid-connected household. It proposes a novel technique called the critical capacity method which provides useful intuitive insights into the optimisation as well as potential runtime improvements compared to conventional methods. The critical capacity method is applied to a case study of the optimisation of a particular household. A sensitivity analysis of the results to factors such as the household load profile, PV/storage pricing and averaging of the PV/load data is performed.