The book constitutes proceedings of the International Conference on Green Energy and Sustainable Technology, ICGEST 2023. The book covers research in energy management, planning the operation of renewable energy systems, distributed generation and energy management, economics/ electricity market and policy/ regulatory aspects, data analytics & AI applications in smart grid. This book contains research papers from academicians, researchers, and students. This book is a valuable resource for students, academics, and practitioners in the industry working on energy areas.