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Solar thermal energy

太陽熱能發電
Solar thermal energy (STE) is a technology for harnessing solar energy for thermal energy (heat). I guess reflectors become damage by solar thermal energy and weathering, because such devices are exposed. Diamond membrane is possible to protect reflectors from natural disaster.

Solar tower experimental solar power plant in California & Principle of collecting solar thermal energy
(Wikipedia: Solar thermal energy)

Application (Place)
The solar furnace at Odeillo in the French
Atacama Desert
The Solar Bowl in Auroville, India etc.
World market & Investment
German cartel will invest 52 trillion JPY for solar thermal energy plant in Sahara desert, North Africa(1).
Reference
(1) Sankei news