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2. EU Renewable Energy Directive 2009/28/EC. s.l.: European Parliament and Council, 5 June 2009. L 140, pp. 16–62.
3. Directive on the energy performance of buildings 2002/91/EC (EPBD). s.l.: European Parliament and Council, 16 December 2002.
4. Directive 2010/31/EU on the energy performance of buildings (EPBD recast). s.l.: European Parliament and of the Council, 19 May 2010.
5. Directive 2012/27/EU on energy efficiency. s.l.: European Parliament and of the Council, 25 October 2012.