1. IEA PVPS 2020 Snapshot Report Task 1 2020.
2. Fraunhofer ISE 2020 Photovoltaics Report Freiburg im Breisgau 2020.
3. IRENA Global Energy Transformation: A Roadmap to 2050 (2019 Edition) International Renewable Energy Agency (IRENA) Abu Dhabi 2019.
4. Future of Solar Photovoltaic: Deployment investment technology grid integration and socio‐economic aspects (A Global Energy Transformation: Paper) International Renewable Energy Agency (IRENA) Abu Dhabi 2019.
5. U.S. Energy Information Administration (EIA).https://www.eia.gov/todayinenergy/detail.php?id=34112. (Accessed 13 January 2021).