Acciona, Repsol, Iberdrola and Inditex are the only Spanish companies listed in the ranking of the 100 most sustainable companies in the world –’Global 100 Most Sustainable Corporations in the World 2012 ‘– that was presented during the celebration of the Davos World Economic Forum and developed by the magazine ‘Corporate Knights’. Acciona is the first Spanish company to appear in the ranking, where it stands at place 37, it is followed…