1. Eurostat, Final energy consumption by sector, 2014, available at: 〈http://epp.eurostat.ec.europa.eu/portal/page/portal/statistics/search_database〉.
2. Directive 2002/91/EC. European Parliament and of the Council of 16 December 2002 on the Energy Performance of Buildings;Off. J. Eur. Communities,2003
3. Directive 2010/31/EU. European Parliament and of the Council of 19 May 2010 on the Energy Performance of Buildings (recast);EU;Off. J. Eur. Union,2010
4. EU, Directive 2012/27/EU, European Parliament and of the Council of 25 October 2012 on energy efficiency, amending Directives 2009/125/EC and 2010/30/EU and repealing Directives 2004/8/EC and 2006/32/EC.
5. EU, Directive 2009/28/EU, European Parliament and of the Council of 23 April 2009 on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC.