1. Wolfsegger C, Fraile D, Philbin P, Teske S. Solar generation-solar electricity for over one billion people and two million jobs by 2020. In: European Photovoltaic Industry Association, Renewable Energy House, Belgium and Greenpeace International, The Netherlands, Report No. 5. 2008
2. Mohamed RG, Ibrahim DK, Youssef HK, Rakha HH. Optimal sizing and economic analysis of different configurations of photovoltaic systems. International Review of Electrical Engineering (I.R.E.E.). January–February 2014;9(1):146-156
3. Mohamed RG, Ibrahim DK. Optimal sizing and economic analysis of stand-alone photovoltaic system. In: The 2012 World Congress on Power and Energy Engineering (WCPEE’12); Apr. Vol. 4. 2012. pp. 188-195
4. Renewable Capacity Statistics 2018 (IRENA). https://www.irena.org/publications/2018/Mar/Renewable-Capacity-Statistics-2018
5. Annual Report 2018 (NREA). http://www.nrea.gov.eg/Content/reports/English%20AnnualReport.pdf