1. Directive 2010/31/UE of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (recast).
2. 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 Directives 2001/77/EC and 2003/30/EC.
3. 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/EC.
4. Communication from the commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions “Energy 2020 A strategy for competitive, sustainable and secure energy” Brussels, 10.11.2010.
5. P. G.M. Boonekamp, Evaluation of methods used to determine realized energy saving, Energy Policy, Volume 34 (2006) 3977-3992.