Lifecycle Analysis of A Grid-Interactive Photovoltaic with Battery Storage: Case of South African Residential Loads

Stephen Marais and Kanzumba Kusakana (Central University of Technology, South Africa); Sandile Koko, SP (University of Technology & Researcher, South Africa)

In this paper, the lifecycle cost analysis of a residential grid-interactive photovoltaic system with a battery storage system is conducted. The proposed grid interactive system operates under the Time of Use (TOU) and Feed-in tariff (FIT) in the South African context. The main objective is to minimize the net electricity cost under a given period which is defined as the difference between the electricity cost, due to the power imported from the grid, and the electricity revenue, due to the power exported to the grid. Based on the simulation results relaying on the lifecycle cost analysis, it is found that the proposed system would break-even in 11.5 years as compared to the grid, with an approximate saving of 35%, translating into savings of R 270 022.83 for a 20 years' operation life

Conference: UKSim-AMSS 22nd International Conference on Computer Modelling and Simulation, UKSim2020

Published: Mar 25, 2020

DOI: 10.5013/IJSSST.a.21.02.30