Heriani and Muhammad Iqbal Nikmatullah 2026. THE EFFECT OF TILT ANGLE AND MOUNTING HEIGHT ON BIFACIAL GAIN AND ANNUAL ENERGY YIELD OF A ROOFTOP BIFACIAL PV SYSTEM: A PVSYST PARAMETRIC ANALYSIS IN THE HUMID TROPICAL CLIMATE OF SOUTH SULAWESI. Bulletin of Engineering Science, Technology and Industry. 4, 3 (Aug. 2026), 1068–1080.