Techno-economic analysis of microsystem based hybrid energy combination for island application

The analysis of hybrid PV/diesel/storage energy system in southern island of the province of South Leyte, Philippines is presented in this paper. Appropriate selection of PV module and battery storage system is done based on the microsystems technology, which enables to model and fabricate PV components, energy storages and power conversion systems with less cost and better efficiency. According to the generator status, load, meteorology and economic data, this research uses hybrid optimization models for energy resources software to analyze the techno-economic of stand-alone diesel system, PV/diesel hybrid system, and PV/diesel/storage hybrid system. In PV/diesel hybrid system, the lowest cost of energy (COE) for the capacity of PV system can be obtained by the simulation of capacity changes from 0 to 400 kWp. In addition, the relation between renewable fraction (RF), fuel saving, and excess electricity is evaluated. The RF, fuel saving and excess electricity increases as the PV system capacity increases. In PV/diesel/storage hybrid system, the simulation case for the lowest COE capacity focus on the RF is higher than 10% and excess electricity is below to 5%. The result shows that the optimal capacity of the system is calculated when RF is 15%. The optimal capacity analysis of hybrid system contains the sensitivity of global horizontal irradiation, diesel price, load consumption, real interest rate, capital cost and the result aims to evaluate the influence of net present cost, COE, and RF.