Akhmad Rifkyansyah, & Setiawan, R. (2026). Merit Order as a Generation Portfolio Optimization Mechanism in PLN and PLN Nusantara Power: A Systematic Analysis of Operational Efficiency, PJBTL Contract Structure, and Digital Transformation. International Journal of Economics and Management Research, 5(1), 848–857. https://doi.org/10.55606/ijemr.v5i1.822