**About the Editors**

### **Luis Hern ´andez-Callejo**

Luis Hernandez-Callejo is an electrical engineer at the Universidad Nacional de Educaci ´ on a ´ Distancia (UNED, Spain), a computer engineer at UNED, and a PhD candidate at the Universidad de Valladolid (Spain). Professor and researcher at the Universidad de Valladolid. His areas of interest are renewable energy, microgrids, photovoltaic energy, wind energy, smart cities, and artificial intelligence. He has participated in numerous research projects, directed many doctoral theses, and is the author of hundreds of scientific articles.

### **Sergio Nesmachnow**

Sergio Nesmachnow is a full professor at the Faculty of Engineering, Universidad de la Republica, Uruguay. He is a level III researcher (the maximum level) of the National System of ´ Researchers in Uruguay and a visiting professor at renowned universities and research centers in America and Europe. He has more than 400 publications in scientific journals and international conferences and is responsible for more than 50 research projects.

### **Sara Gallardo Saavedra**

Sara Gallardo Saavedra is a professor and researcher at the Campus Duques de Soria of the University of Valladolid, Spain. Her research focuses on the detection, characterization, and classification of defects in photovoltaic (PV) modules through the use of thermography, electroluminescence, I-V curves, and visual analysis. She has participated in numerous national and international R+D+I projects, carrying out active dissemination of the results with high regularity in the scientific production, including scientific publications in high impact factor journals, book chapters, and contributing to congresses on advanced maintenance in PV. She has made a predoctoral and a postdoctoral stay in the Unit of Solar PV Energy in the Energy Department of the Energy Research Center, Environment, and Technology (CIEMAT) in Madrid, and the researcher has collaborated with different institutions such as the University of Gavle in Sweden, the Universidad del Valle in Colombia, the National Polytechnic Institute of Mexico, and the University of Cuenca in Ecuador.
