Technological-economic study of a unique hydrogen-based hybrid energy system for on-grid and off-grid use: Tegal-Pesawaran-Lampung Islands, IndonesiaIwan Purwanto, Dikpride Despa and Aleksander PurbaE3S Web Conf., 448 (2023) 02040DOI: https://doi.org/10.1051/e3sconf/202344802040