This book offers a timely report on challenges and solutions relating to electrical power engineering. It discusses current issues in generation, transmission, distribution and consumption of electricity, and presents improved methods for diagnostics, faults analysis and system control in power engineering. Further, it covers smart grids, applications of AI, and big data in power systems. A special emphasis is given to sustainable electricity production. Economic and business strategies are also discussed. Gathering the proceedings of the 12th International Scientific Symposium on Electrical Power Engineering, Elektroenergetika 2024, held on September 11–13, 2024, in Stará Lesná, Slovakia, this book offers extensive information and a source of inspiration for both scientists and professionals involved in developing safe, reliable and sustainable solutions for energy supplies of the future.