If the Kyoto Protocol had as its objective a reduction of greenhouse gas emissions - GHG - from developed countries and with economies in transition by approximately 5% in the period 2008-2012 compared to 1990, the studies carried out indicated that to prevent irreversible effects caused by climate change, global emissions must be reduced by approximately 50% by 2050 compared to the levels recorded in 1990. The package distributes among the member states, by means of criteria and targets, the EU objectives assumed at the 2007 Spring European Council, respectively of reducing, by 2020, by 20% of CO emissions at the EU level and increasing, in the same period of time, by up to to 20% of the share of renewable energies in total energy consumption, as well as increasing energy efficiency by 20%. In December 2012, at the 18th Conference of the Parties - COP 18 to the United Nations Framework Convention on Climate Change, the amendment to the Kyoto Protocol defining the regulatory norms for the second commitment period was adopted, respectively 2013-2020, and which will be applied from January 1, 2013. The EU and its member states have undertaken a commitment in accordance with the internal objective of reducing emissions by 20% compared to 1990 levels by 2020, which will be fulfilled jointly by the EU and its member states and Iceland.