This book contains selected papers presented at Third International Symposium on Sustainable Energy and Technological Advancements (ISSETA 2024), organized by the Department of Electrical Engineering, NIT Meghalaya, Shillong, India, during February 23–24, 2024. The topics covered in the book are the cutting-edge research involved in sustainable energy technologies, smart building technology, integration and application of multiple energy sources; advanced power converter topologies and their modulation techniques; and information and communication technologies for smart micro-grids.