Impacts of Battery Energy Storage System for Energy Shifting on Generation Dispatch and Generation Cost of Sulutgo Power System, Indonesia

This study investigates the operational and economic impacts of Battery Energy Storage Systems (BESS) for energy shifting in the Sulutgo power system, Indonesia. The utilization of a BESS as an energy shifting strategy and a support for low-cost power plants to operate at optimum capacity is expected to be a solution for reducing generation cost. First, an energy simulation was conducted using an energy analyzer software to obtain energy allocation of each power plant unit for baseline scenario. The results then imported into power system analyzer software to identify the system parameters such as load factor and busbar loading, which are subsequently analyzed to determine the placement and capacity of the BESS to be integrated. Next, simulation in energy analyzer and power system analyzer software are repeated for BESS integration scenario to assess its operational and economic impacts on the system. The results show that BESS can increase the utilization of coal-fired power plants and reduce gas-fired generation during peak hours. Consequently, the overall generation cost of the system decreases.