This document discusses the application of artificial intelligence techniques, mainly expert systems, to power systems. It has been an active area of research for about a decade. The document outlines some key AI techniques used in power systems, including expert systems, artificial neural networks, and fuzzy logic. It provides examples of how each technique has been applied to problems in power systems like fault diagnosis, planning, control, and automation. Overall, the document presents an overview of the history and current applications of artificial intelligence in power systems.