In this document, issued on 9 March 2012, the European Commission has set out extensive recommendations regarding (i) data protection and security, (ii) methodology for the economic assessment of the long-term costs and benefits for the roll-out of smart metering systems, and (iii) common minimum functional requirements for smart metering systems for electricity. EU member states must take all necessary measures to follow the recommendation and to draw it to the attention of all stakeholders involved in designing and operating smart grid applications within the EU. By 3 September 2012, they should have reported to the Commission on the results of their cost-benefit analysis regarding the roll-out of smart metering systems and on the measures and plans they have adopted in relation to the Recommendation.