1. World Energy Outlook 2019;Fatih,2019
2. Energy Revolutionhttps://www.duesseldorf.greenpeace.de/sites/www.duesseldorf.greenpeace.de/files/greenpeace_energy-revolution_erneuerbare_2050_20150921.pdf
3. Global Energy System Based on 100% Renewable Energy—Power, Heat, Transport and Desalination Sectors;Ram,2019
4. PV Status Report 2019;Jäger-Waldau,2019
5. 2019 PV Manufacturing Capacity Review,2020