1. Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 the Energy Performance of Buildingshttps://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A32010L0031
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 Sourceshttps://eur-lex.europa.eu/legal-content/EN/ALL/?uri=celex%3A32009L0028
3. Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on Energy Efficiencyhttps://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex:32012L0027
4. Commission Recommendation (EU) 2016/1318 of 29 July 2016 on Guidelines for the Promotion of Nearly Zero-Energy Buildings and Best Practices to Ensure That, by 2020, All New Buildings Are Nearly Zero-Energy Buildingshttps://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32016H1318
5. Nearly Zero Energy Buildings: An Overview of the Main Construction Features across Europe