Tony Rahadinata, PhD. gave a lecture to the graduate students and researchers of Science and Technology at the 6th IROAST Seminar organized by Professor Toshiyuki Tosha, IROAST, on February 1, 2017. Dr. Rahadinata is a geophysicist from the Geothermal Division, Center for Mineral Coal and Geothermal Resource, Indonesia. He talked about "Indonesia’s Geothermal Energy: Barrier and proposed solutions for geothermal development."