This Decree-Law, consisting of 74 articles divided in 9 Chapters, establishes the general basis for the organization and functioning of the National Natural Gas System Organization (SNGN). It implements at National level the EU Directive No. 2003/55 and regulates activities of reception, storing, transport, transport, distribution and trade of natural gas. The Decree-Law is divided as follows: General provisions (Chap. I); Organization, and functioning (Chap. II); Costumers (Chap. III); Regulati