“…Nevertheless, solar energy conversion technologies face costs and scalability obstacles in the technologies required for a complete energy system, because of to provide a truly extended primary energy source, solar energy must be captured, converted and stored cost-effectively (Trainer, 2017;Keck et al, 2019;Obeng-darko, 2019;Azhgaliyeva, 2019). New developments in nanotechnology, biotechnology, materials and physical sciences may allow approaches of gradual change of cost-effective systems (Kartite and Cherkaoui, 2019), and scalable on a global scale for the use of solar energy. China (PRC) is the world's largest market for photovoltaics and solar thermal, but solar energy production accounted for only 1% of China's total energy demand in 2017 (Liu, 2019), (Hou et al, 2018), and the 66% of demand still comes from coal, something the country's National Energy Administration wants to change drastically by 2050, partly because of China's known air pollution problems , but a very different energy mix could be propelling China in 2050 (Camargo-Ramirez et al, 2018), (Nguyen et al, 2019).…”