Tyas Wedhasari 2026. An Exploratory Evaluation of One-Hour Solar Irradiance Forecasting in the Tropics Using Physics-Constrained Ex-treme Learning Machine. Journal of Engineering, Electrical and Informatics. 6, 2 (Jul. 2026), 46–54. DOI:https://doi.org/10.55606/jeei.v6i2.7769.