Contact Person : R. Priyoko Prayitnoadi, S.S.T., M.Eng., Ph.D 62-813-1206-9795; Last Date for the submission of abstract : 30-Apr-2019; ICoGEE will invite several keynote speakers from academician from local and abroad which has deep kledge and experience in sustainable energy and environment sustainability. Selected paper will be published at IOP Conference Series: Earth and Environmental Science, indexed SCOPUS