1. IEA (International Energy Agency). Energy, climate change and environment: 2016 insights; 2016. (〈http://www.iea.org/publications/freepublications/publication/ECCE2016.pdf〉) [Accessed on January 2017].
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. (〈http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?Uri=CELEX:02009L0028-20130701〉) [Accessed on January 2017].
3. European Climate Foundation. Roadmap 2050: a practical guide to a prosperous, low carbon Europe; 2010. (〈http://www.roadmap2050.eu/attachments/files/Roadmap2050-AllData-MinimalSize.pdf〉) [Accessed on January 2017].
4. European Commission. Communication from the Commission to the European Arliament, the Council, the European Economic and Social Committee and the Committee of the Regions: a Roadmap for moving to a competetive low carbon economy in 2050; 2011. (〈http://www.cbss.org/wp-content/uploads/2012/12/EU-Low-Carbon-Road-Map-2050.pdf〉) [Accessed on January 2017].
5. European Commission. EU energy trends to 2030 – update 2009; 2010. (〈https://ec.europa.eu/energy/sites/ener/files/documents/trends_to_2030_update_2009.pdf〉) [Accessed on January 2017].