The Articles of the Energy Services Regulatory Authority (ERSE) have recently been subject to a comprehensive review, regarding its update and adaptation to the changes in the market for electricity and natural gas, ensuring the transposition of Directives that, under the 'Third Energy Package', establish common rules for the internal market for electricity and natural gas.

The whole transposition of such directives corresponds to one of the commitment s assumed by the Portuguese Government i n the Memorandum of Understanding with Troika, which aims to conclude the liberalization of the electricity and natural gas market, promote competition and strengthen the integration in the Iberian markets of energy .