Dr. Mustapha Adar is a physicist specializing in Materials and Energy, with a Ph.D. from the University Sultan Moulay Slimane (USMS), Morocco. His doctoral research focused on the study, characterization, and performance comparison of photovoltaic installations based on monocrystalline, polycrystalline, and amorphous silicon technologies. He has extensive experience in renewable energy systems, solar resource assessment, and the integration of photovoltaic technologies into sustainable urban environments. Dr. Adar has authored several scientific publications in peer-reviewed journals and has served as a reviewer for international journals in the fields of solar energy, materials science, and smart energy systems. He is actively involved in supervising students and teaching physics courses across multiple faculties at USMS. His recent work explores machine-learning-driven optimization of energy systems, smart city applications, and advanced monitoring of photovoltaic performance. He is a member of research groups working on renewable energy and sustainable development in Morocco and has contributed to international conferences in the field.