Simulation of a solar PV-battery renewable energy system and performance comparison with conventional energy system at Pulau Tuba, Langkawi, Malaysia

Abstract

Simulation of a solar photovoltaic-battery energy system for domestic applications was simulated using HOMER software. Electric load and components' specifications are the same as those set for a previous study on conventional diesel generator-battery energy system at Pulau Tuba, Langkawi, Malaysia. Based on the simulation results, the renewable energy system can provide adequate electric energy to satisfy existing demands, set at 84 kWh/day average, with 14 kW peak, with some surplus for future demand increase. By comparison, both conventional and renewable energy systems have comparable net present cost, at $179363 and $166576, respectively; and levelized cost of energy, at $0.511/kWh and $0.480/kWh, respectively; despite relatively higher capital cost of the renewable energy system. Renewable energy system is shown to be more beneficial to the environment since it can eliminate air pollutant emissions. Future price reduction and performance improvement of renewable system would make it more competitive.