1. Renewables 2021. Analysis and forecast to 2026,2021
2. Renewable capacity statistics 2020,2021
3. SolarPACES. Potential for Solar Thermal Energy By Country 2008. https://www.solarpaces.org/csp-technologies/csp-potential-solar-thermal-energy-by-member-nation/.
4. ESTELA. The value of thermal storage 2016. https://www.estelasolar.org/.
5. Estimating the Value of utility-scale solar technologies in California under a 40% renewable portfolio standard;Jorgenson,2014