International Conference on Renewable Energy Research & Challenge (ICORER) 2019 is the scientific conference featuring energy symposium and green energy exhibition. The ICoRER 2019 is an excellent platform for researchers, academics and experts to share ideas and perspective as well as to establish further research cooperation in the development of renewable energy in Indonesia. In addition, the ICoRER 2019 invites various stakeholders during the symposium to discuss and formulate avenues to tackle the current challenges of renewable and sustainable energy implementation in Indonesia.In this year, ICoRER 2019 collaborating with the 12 th RCEneE (Regional Conference on Energy Engineering) by AUN-SEED. Selected paper will be published in AEJ (Asean Engineering Journal) and SCOPUS indexed proceeding.