Design and techno-economic analysis of impact of renewable energy on grid-connected power systems: Kakuri community, Nigeria as a case study.

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Abstract This research studied the technical, economic, and environmental analysis of system hybridisation of renewable energy systems connected to the conventional grid. The HOMER Pro software analysed the potential of using grid-connected energy systems. The location for the study is the Kakuri in Kaduna, Nigeria, which had an average load of 165.44kWh/day at a 20.46kWpeak. Hybridisation simulations were to showcase the availability of electricity supply and the impact on energy cost. Sensitivity analysis was conducted to understand the impact of the increase in the average yearly solar irradiance, depending on location and weather. The most optimised scenario was the PV/Converter/Grid system which supplied 25kW power, and which PV system supplied 52% of the annual electricity production, which stood at 45,721 kWh/yr. Cost analysis also indicated that the system had a Levelized cost of energy of ₦29.29/kWh and a Net Present Cost (NPC) of ₦28.9 million. 45% NPC made up the PV, while the grid and converter shared 42% and 13%, respectively. The hybrid model was also simulated via MATLAB/SIMULINK software to showcase, analyse and implement the system’s viability for practical scenario usage.

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