EU Member States must transpose the third energy package ( link ) by 3 March 2011 , for most of the provisions contained in: Directive 2009/72/EC on the internal market in electricity , and Directive 2009/73/EC on the internal market in natural gas. The provisions of Regulation (EC) No. 714/2009 on conditions for access to the network for cross-border exchanges in electricity, and of Regulation (EC) No. 715/2009 on conditions for access to the natural gas transmission networks also apply from 3 March 2011. Finally, Articles 5 to 11 of Regulation (EC) No. 713/2009 establishing the Agency for the Cooperation of Energy Regulators ( ACER ) apply from 3 March 2011. ACER will be officially inaugurated in Ljubljana, Slovenia , today (see, press release European Commission ). Meanwhile, the European Commissioner for Energy, GĂĽnther Oettinger, speaking at the occasion of the Energy Ministers Council on 28 February (see, video press conference ), made clear that 3 March 2011 " is not...