Sudarmaji, Eka, Noer Azam Achsani, Yandra Arkeman, and Idqan Fahmi. 2021. “Alternative PSS Business Models of ESCO: Towards an Innovative New Model”. Indonesian Journal of Business and Entrepreneurship (IJBE) 7 (3), 296. https://doi.org/10.17358/ijbe.7.3.296.