Whether you should shut down the computer or switch to standby mode naturally depends on how long it will not be used.
"Shut down" for several days or longer, otherwise standby mode. Some computers even have their own standby switch or button. In the event of a hardware installation, the computer should be shut down completely.
The computer does not consume any energy.
After switching on the computer, all programs and documents have to be reopened.
The standby mode:
All information and currently used programs, as well as their position and arrangement, are completely saved. In contrast to shutdown, you do not have to reopen all programs and documents after turning on the computer.
Sleep mode uses 1 to 10 percent of the energy that a computer uses on average.