Planning and managing the complex hydroelectric system relies on simulation and optimization models. The Hydro Simulation model (HYSIM) is used to determine the reservoir operation strategy that would optimize the operating value of BC Hydro’s generation system while meeting increasing load obligations economically and sustainably under the electrification plan. The existing HYSIM modelling procedure could benefit from the research collaboration between BC Hydro and UBC, which will develop a new approach with state-of-the-art machine learning and optimization techniques. This new approach will produce hydro operation results with higher system benefits and reduce computational time, improving the modelling efficiency of long-term planning.