Juherwin, M. et al. 2026. Adaptive Energy Balance Control System via State of Charge (SoC) for a Sustainable Solar-Powered Outdoor-Hydroponics in Tropical Islands. IIUM Engineering Journal. 27, 1 (Jan. 2026), 304–320. DOI:https://doi.org/10.31436/iiumej.v27i1.3780.