Power system decarbonization is one of the most important pillars for achieving net zero ambitions and accelerating the energy transition journey.This session focuses on the key roles that digitalization plays in accelerating the realization of decarbonization and energy transition ambitions and will showcase how grid digitalization tackles challenges such as the integration of more renewables at different grid voltage levels, heat and transport electrification, and the more "weather-dependent" grid. Additionally, light will be shed on technologies enabling grid digital transformation and on effective digital transformation strategies to realize value for the system.