1. Climate action and renewable energy package;European Union,2008
2. Attuazione della direttiva 96/92/CE recante norme comuni per il mercato interno dell’energia elettrica;Decreto legislativo 79,1999
3. Directive 96/92/EC concerning common rules for the internal market in electricity.
4. EU directive 2009/28, On the promotion of the use of energy from renewable sources and amending and subsequently repealing directives 2001/77/EC and 2003/30/ec.
5. On the promotion of cogeneration based on a useful heat demand in the internal energy market and amending Directive 92/42/EEC;EU Directive 2004/8/EC,2004