José Alberto Fuinhas, PhD (in Economics) is a professor of Applied Energy Economics, and Intermediate Econometrics at the Faculty of Economics, University of Coimbra (Portugal). He is a researcher in the areas of macroeconomics, energy economics, and environmental economics, at the CeBER - Centre for Business and Economics Research, sponsored by the Portuguese Foundation for the Development of Science and Technology. He has published in international journals, such as Energy, Economic Modelling; Energy Policy; Energy Economics; Renewable and Sustainable Energy Reviews; Applied Energy; Environmental Science and Policy; Environmental Resources and Economics, and Energy Sources Part B: Economics, Planning, and Policy. António Cardoso Marques, Ph.D. (in Economics) is Professor of Microeconomics and Energy Economics at the Management and Economics Department of the University of Beira Interior (Portugal).