Spatial optimization of the economic benefits of the potential hydropower locations: study case upper citarum riverAssyifa Rosani, Faizal Immaddudin Wira Rohmat, Azman Syah Barran Roesbianto, Nabila Siti Burnama, Hadi Kardhana, Arno Adi Kuntoro and Mohammad FaridE3S Web Conf., 467 (2023) 04009DOI: https://doi.org/10.1051/e3sconf/202346704009