<![CDATA[Indonesia's Ministerial Regulation (Permen ESDM) No. 2/2024 abolished the export-import (net-metering) scheme for rooftop photovoltaic (PV) systems, effectively imposing a zero-export policy in which surplus generation fed into the grid is no longer compensated. This study evaluates the techno-economic performance of a 70.2 kWp fixed-tilt, bifacial on-grid rooftop PV system designed for the Pelalawan satellite campus (PSDKU) of Politeknik Negeri Padang (PNP) under this new regulatory regime. The system — 120 Trina Solar TSM-NEG19RC-585 bifacial modules and two Huawei SUN2000-30KTL-M3 string inverters — was modeled in PVsyst V7.4.6 using Meteonorm 8.1 weather data and a monthly load profile calibrated to the campus's metered base consumption of 32,105 kWh/year. Results show a specific yield of 1,273 kWh/kWp/year and a Performance Ratio of 76.27%, with temperature loss (−5.82%) dominating the loss cascade while DC and AC ohmic wiring losses remain below 1%, confirming a technically sound electrical design. However, load-matching analysis shows that only 14.9% of array output (14,020 kWh/year) is self-consumed, while 75,342 kWh/year (80.2%) is exported to the grid. Under the legacy net-metering assumption this configuration appears profitable (LCOE 661.72 IDR/kWh, NPV +IDR 282.9 million, 8.5-year payback), but recalculated strictly on self-consumption savings under Permen ESDM No. 2/2024, it yields a 25-year net loss of approximately IDR 952.5 million — proving that the design, while technically excellent, is not economically efficient at the campus's present base load. We argue that this apparent oversizing instead constitutes latent headroom for PNP Pelalawan's anticipated load growth and outline the interim mitigation and monitoring measures needed to justify retaining the larger capacity.]]>
