APEC electricity grids and energy systems are under immense pressure. Rising demand, the shift to variable renewable energy, and more frequent extreme weather events are challenging its legacy infrastructure. Artificial Intelligence (AI) offers a transformative tool to help modernise electricity systems, improve efficiency and strengthen resilience amid these challenges. Drawing on expert interviews from various international organisations, case studies, and regional data, this policy brief showcases practical AI applications already delivering results in optimising grid operations, unlocking energy savings in buildings and industry, and increasing energy market efficiency. It then lays out policy options at the regional and domestic levels to enable AI uptake, integration, and acceptance in energy systems.