REN operates in the electricity, natural gas and, complementarily, telecommunications sectors and is therefore subject to a wide range of legal and regulatory standards. Its activities in the electricity and natural gas sectors are performed under a public service concession contract.
The legal framework resulting from the implementation of the European Union, which includes Directive 2009/72/EC and Regulation (EC) 714/2009 for the electricity sector and Directive 2009/73/EC and Regulation (EC) 715/2009 for the natural gas sector, requires an extra effort towards harmonisation and adaptation of regulation models and rules of access.
The main aims of the Third Energy Package are greater competition, effective regulation and incentives to investment to the benefit of consumers. It sets out measures designed to consolidate a market that operates to the benefit of all consumers, regardless of their size, and also guarantees more secure, competitive, sustainable energy supply in the European Union.
The transposition of these Directives into Portuguese law began in 2011 with the publication of Decree-Law 77/2011 for the natural gas sector and Decree-Law 78/2011 for the electricity sector, both dated 20 June. Decree-Law 215-A/2012 and Decree-Law 215-B/2012, both dated 8 October, completed the transposition of Directive 2009/72/EC of 13 July, which sets out the common rules for the internal electricity market.
The DGEG, ERSE (Regulator) and Autoridade da Concorrência (Competition Authority) are currently responsible for regulating the energy sector in Portugal.