This book is a second volume and contains selected papers presented at Second International Symposium on Sustainable Energy and Technological Advancements (ISSETA 2023), organized by the Department of Electrical Engineering, NIT Meghalaya, Shillong, India, during 24 – 25 February 2023. The topics covered in the book are the cutting-edge research involved in sustainable energy technologies, smart buildingtechnology, integration and application of multiple energy sources; advanced power converter topologies and their modulation techniques; and information and communication technologies for smart microgrids.