1. Consumption of Energyhttp://ec.europa.eu/eurostat/statistics-explained/index.php?title=Consumption_of_energy
2. Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the Energy Performance of Buildings (Recast),2010
3. Directive 2012/27/EU of the European Parliament and 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,2012
4. Directive 2006/32/EC of the European Parliament and of the Council of 5 April 2006 on Energy End-Use Efficiency and Energy Services and Repealing Council Directive 93/76/EEC,2006
5. Closing the efficiency gap: barriers to the efficient use of energy