Pérez Arriaga (Madrid, 1948) is a Spanish professor of Engineering, Economics and Regulation of the Electric Power Sector, currently at the Massachusetts Institute of Technology (MIT, United States) and the ICAI School of Engineering (Comillas Pontifical University, Spain).
He is a life member of the Royal Academy of Engineering of Spain.
He has been a major contributor across the spectrum of electric power systems, from system dynamic analysis, monitoring and diagnosis at the start of his academic career, to economic and regulatory analysis.