**About the Editors**

**Francisco G. Montoya**, professor in the Engineering Department and the Electrical Engineering Section at the University of Almeria (Spain), received his M.S. from the University of Malaga and his Ph.D. from the University of Granada (Spain). He has published over 75 papers in JCR journals and is the author or coauthor of books published in different editorials. His main interests are power quality, smart metering, smart grids and evolutionary optimization applied to power systems, and renewable energy. Recently, he has become passionately interested in geometric algebra as applied to power theory.

**Ra ´ul Ba ˜nos Navarro** is an Associate Professor in the Department of Engineering at the University of Almeria (Spain). He received his M.S. in Computer Science at the University of Almeria and his second M.S. in Economics from the National University of Distance Education (UNED). He wrote his Ph.D. dissertation on computational methods applied to the optimization of energy distribution in power networks. His research activity includes computational optimization, power systems, renewable energy systems, and energy economics. He has been a research visitor at Napier University (Edinburgh, UK) and at the Universidade do Algarve (Portugal). As a result of his research, he has published more than 150 papers in peer-reviewed journals, books, and conference proceedings.
