New in Solar energy: solar electricity day & night, 5 types of storages that are cheaper than Li-ion

0:00 About solar thermal energy which is 5…10 times cheaper than coal or natural gas 0:49 How solar thermal energy turns into electricity day and night 1:45 Heat storages on the basis of molten salt, and what is wrong with them 3:20 Concrete heat storages (Concrete instead of the molten salt) 4:49 Heat storages with gravel (or crushed stone) 7:28 Ceramics, stone casting, etc. 8:28 Sand-based heat storages 10:50 Cheaper materials These mirrors focus solar radiation and convert it into steam, and I am experimentally testing these 5 types of solar heaters and I want to start testing some more new types. My goal is to find the best type which can convert solar radiation into thermal energy at this cost, 0.5 cent / kWh, and it is about 5 times cheaper than the cost of heat from coal, and about 10 times cheaper than heat from natural gas. This cheapness of our solar heat allows a turbine to produce electricity so cheap that it wins competition against thermal and nuclear power plants.