1. European Commission
https://ec.europa.eu/energy/topics/energy-strategy/national-energy-climate-plans_en
2. Renovation Strategies of Selected EU Countries. A Status Report on Compliance with Article 4 of the Energy Efficiency Directive,2014
3. Directive (EU) 2018/844 of the European Parliament and of the Council of 30 May 2018 amending Directive 2010/31/EU on the energy performance of buildings and Directive 2012/27/EU on energy efficiency; the European Parliament and the Council of the European Union;Off. J. Eur. Union,2018
4. Future-Proof Buildings for All Europeans,2019
5. COM/2020/562 Final. Investing in a Climate-Neutral Future for the Benefit of Our People. Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions. Stepping up Europe’s 2030 Climate Ambition Brussels
https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A52020DC0562