Analysis of hybrid energy system for supply residential electrical load by HOMER and RETScreen: A case in Rajasthan, India

This paper presents optimization of hybrid energy system to supply electrical load of a residential house located at Jahazpur, Bhilwara in East-South region of Rajasthan, India. The electrical load of the house is calculated by energy consumption of various electrical appliances used and supplied by hybrid energy system includes Solar Photo Voltaic (PV), Small Wind Turbine (WT), Battery, and Diesel Generator system. The modeling and optimization of hybrid energy system done using HOMER (Hybrid Optimization Model for Electric Renewable) developed by NREL (National Renewable Energy Laboratory). HOMER gives the optimum configuration of hybrid energy system for minimizing the Net Present Cost (NPC) of the system. Optimized system configuration further analysed by using RETScreen software tools developed by ministry of natural resources, Canada. The various analysis done in RETScreen includes Net Present Value (NPV) analysis, payback period analysis, internal rate of return (IRR) analysis, and effect of tax and subsidies.