An Assessment to Determine Energy Surplus in an Isolated Hybrid Energy System

Stand-alone hybrid Renewable Energy Systems (HRES) are a promising method for supplying power to distant regions such as islands and towns where grid expansion is problematic. However, the majority of the standalone energy systems suffer from high energy costs and unpredictable energy delivery. This study discovers various electricity supply methods to meet the dynamic demand for power in a distant place, which is then assessed in terms of energy cost and factors. Unusable energy (electricity excess) created during demand fulfilment is a key contributor to high energy costs. Additionally, the significance of energy storage systems in isolated energy systems is explored. In this case study, up to 97% of the extra electricity is observed yearly, which may be used in a variety of ways to minimize overall energy costs. Electricity surplus profiles for various energy models, their implications, and potential solutions with open viewpoints are addressed