What is the cap? Why has the Commission taken this decision? At what level has the cap for 2013 been determined? What will happen to the cap after 2013? What happens if the EU increases its greenhouse gas reduction target for 2020 from 20% to 30%? Which allowances can be taken into account in order to determine the cap? Is aviation included in the decision? Find out the answers to all your questions concerning the Commission Decision on the EU ETS cap for 2013!