This book entitled "Soft Computing Applications in Modern Power and Energy Systems" aims to offer in-depth discussions, case studies, and the latest advancements in the realm of soft computing as it pertains to power systems incorporating power electronics-based equipment, energy systems, and energy communities. It also explores topics such as optimal planning, analysis, operation, and control in the context of modern power and energy systems, along with the applications of various soft computing techniques. Readers will find valuable opportunities to enrich their understanding and expertise in these specialized domains. Furthermore, this book has the potential to inspire readers to generate novel and innovative ideas in the field.