1. Carbone, R. (2009, January 19–20). Grid-connected photovoltaic systems with energy storage. Proceedings of the IEEE International Conference on Clean Electrical Power, Coimbatore, India.
2. European Commission (2009). 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, Publications Office of the European Union. Official Journal of the European Union L 140/16.
3. A Review of Hybrid Solar PV and Wind Energy System;Abusara;Smart Sci.,2015
4. European Commission (2009). Directive 2009/29/EC of the European Parliament and of the Council of 23 April 2009 Amending Directive 2003/87/EC so as to Improve and Extend the Greenhouse Gas Emission Allowance Trading Scheme of the Community, Publications Office of the European Union. Official Journal of the European Union L 140/63.
5. Capros, P., De Vita, A., Tasios, N., Papadopoulos, D., Siskos, P., Apostolaki, E., Zampara, M., Paroussos, L., Fragiadakis, K., and Kouvartakis, N. (2014). EU Energy, Transport and GHG Emissions. Trends to 2050. Reference Scenario 2013, Publications Office of the European Union.