Amount awarded to qualified suppliers Certified quality management system (ISO 9001 or equivalent) 84.5 83.7 84.4 Certified environmental management system (ISO 14001 or equivalent) 75.2 76.9 75.0 Certified risk prevention management system (OHSAS 18001 or equivalent) 69.2 71.5 69.1 Fuel purchases are also subject to the general principles stemming from Iberdrola’s social responsibility policies in order to foster socially responsible actions, respect for the environment, and the prevention of occupational risks at supplier companies.