Why are wind power and photovoltaics developing better than solar thermal?
Solar heat occupies a large area and requires a large amount of water. It has poor flexibility but is relatively stable. It basically collects heat to boil water and the steam turbine does work.
Photovoltaics generate electrical energy through the photoelectric effect and have the highest flexibility.
Wind power is the conversion of potential energy into mechanical energy to generate electricity. Compared with light, wind has higher conversion efficiency and higher income.
Generally speaking, the cost of solar thermal is still too high and the land area is too large to get rid of water constraints. It is not economically feasible to build in a water-scarce area in the northwest, and there is no shortage of electricity in the northwest. Built in a developed coastal area, the cost of every inch of land is too high to justify.
The restrictions on photovoltaic and wind power are much smaller. Although photovoltaic power generation hours are low, rooftop fish ponds and the like can be deployed as long as there is no obstruction. Although the wind farm is large in area, except for the small space occupied by the wind turbine foundation and booster station, it is enough to leave a road for maintenance in other places.