Optimization Of Generation Expansion Planning For The Achievement Of Renewable Energy Target
Electricity has become one of the important needs for the society. However, the increasing concern about global warming has made various policies to reduce CO2 emissions aimed at reducing the level of global warming, especially from the electricity sector. The Java-Bali electricity system is the largest electricity system in Indonesia. In 2019 the total electricity demand in the Java-Bali system is 189,606 GWh and the peak load is 27,973 MW. At present the energy mix in Java-Bali is still dominated by coal by 70%, and natural gas by 21.22%, while the utilization of renewable energy is only 7.71% and the rest are still using fuel by 0.14%. To increase the utilization of renewable energy sources and reduce the use of fossil fuels in meeting electricity demand, the government set a target of the energy mix in Indonesia for renewable energy by 23% in 2025 and 31% in 2050. Java-Bali itself has quite large potential in renewable energy sources. Therefore, to be able to fulfill the electricity demand by utilizing renewable energy sources, it is necessary to develop an optimal electricity system development planning strategy to obtain the most efficient investment plan. This paper evaluates several scenarios to find the potential future development of Java Bali electricity system with considering the potential of renewable energy source on a least cost basis.