Optimal Design of Hybrid Renewable Energy System on Grid Based on Energy Consumption: A Case Study

There is a serious need for reducing the carbon dioxide emissions due to the increase in the global warming.Besides, owing to the unavailability of clean energy sources throughout an entire the year, hybrid renewable energy systems (HRESs) are required.On other hand, the importance of optimal HRES design is to achieve a low cost with using a high green energy.Helioscope and HOMER Pro software were used to design a small grid-connected model and estimate the consumption energy for optimization.The analysis of the system showed how a grid-connected PV system with a battery backup affected on the total energy costs.In addition, the role of power supply irregularity from the national grid was highlighted by calculating the likelihood of a power outage and its impact on HRES.The results showed the internal rate of return (IRR) is 13%, and the return on investment (ROI) is around 9%.Also, the value of renewable fraction was around 63.4%.In conclusion, the proposed system was an efficient according to the energy consumption.This case study can extend to be applied in any country, especially the countries have longer summer like Iraq.