Invited Speakers in International Seminar on Energy Storage Technology and Applications (ISESTA) 2025 September 8, 2025September 8, 2025 materialsgroup0 commentsNews and Events Retno Asih, Ph.D. and Fahmi Astuti, Ph.D. have delivered their talks as invited speakers in the International Seminar on Energy Storage Technology and Applications (ISESTA) 2025, held in Universitas Negeri Sebelas Maret (UNS), on May 28, 2025.