1. Directive 2002/91/EC of the European Parliament and of the Council of 16 December 2002 on the Energy Performance of Buildingshttps://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2003:001:0065:0071:EN:PDF
2. Directive 2010/31/EC of the European Parliament and of the Council of 19 May 2010 on the Energy Performance of Buildings (Recast)https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:153:0013:0035:EN:PDF
3. Directive 2009/28/EC of the 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 Directive 2001/77/EC and 2003/77/EChttps://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:140:0016:0062:en:PDF
4. Directive 2012/27/EU of the 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/EChttps://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32012L0027
5. Energy Efficiency and its Contribution to Energy Security and the 2030 Framework for Climate and Energy Policy,2014