control the switching unit to perform switchingwhen the power supply system is supplying power, control the switching unit to perform switching, so that the first energy storage unit is connected to the power supply system and the power supply system.
Those areas, including deep within terraced pits, could provide more than enough space to build all the solar energy we need for decades without encroaching on farmland or intact ecosystems — but getting solar facilities built on former mines is no simple task.