I. Introduction
South African main source of electricity is generated from coal powered power stations accounting for 67.90% of total energy and only 0.3% from renewable resources. Therefore, South Africa is one of the world's highest greenhouses gas (GHG) emitters [1] [2]. In 2011 South Africa launched Renewable energy Independent Power Procurement Programme (REIPPP) making it the most renewable energy invested country in the continent. Through REIPPP several large-scale renewable energy plants system has been installed thus reducing the dependency of fossils fuel power generation from 90% to 67.90% by 2017[3]. In most developing countries, the rural communities have depended more on diesel-based generators for electricity supply which comes at a higher price for operation and maintenance [4]. The generators alone are not cost effective as a solution to rural energy crisis. Although most developed countries in Africa have electricity supply, there is still a large percentage of communities that are not connected to the grid; furthermore, those that are on the grid suffer from power outages from time to time. These challenges have been mitigated across remote communities as well as urban cities by implementing Hybrid Renewable Energy System (HRES) [5].