1. GWEC reported a Wind capacity installed of 318 GW by the end of 2013 in its document Global installed wind power capacity in 2013.
2. EPIA reflects in its Global Market Outlook a capacity installed of 139 GW by the end of 2013.
3. Technology Roadmap, Solar Thermal Electricity, International Energy Agency, Paris, 2014.
4. Base Case Analysis of a HYSOL Power Plant, J Servert el all, Proceedings, SolarPACES Conference 2014.