Study of Technical-Economic Analysis of a Hybrid System with Battery Storage in the Off-Grid Case and on-Grid using Homer Pro®

This work deals with a highly relevant and topical subject regarding the integration of renewable energy sources into the electrical grid. The aim of this investigation is to demonstrate the applicability of a grid-connected photovoltaic-wind hybrid system compared with the same architecture in an isolated site. the methodology of this study was carried out in the bejaia region in northern Algeria (12.59°N and 80.14°E). the first part was the MATLAB/Simulink simulation of the wind- photovoltaic hybrid system with batteries to supply a residential daily load profile, under variable weather conditions. Management and supervision were successfully applied to manage the flow of energy between the three constituent sources of the off-grid system. The second part of this work, which is the main contribution, was carried out using Homer Pro software, and the results showed an optimal net present cost (NPC) value of $2091 for the grid-connected hybrid system, compared with the much more expensive stand-alone system, valued at $12177. These results clearly demonstrate the benefits of connecting renewable energy systems to the grid, in order to optimize investment costs and supply the load on a permanent basis, compensating for the intermittent nature of these green energy sources.