An excellent app for this is ....[RELEASE] Hub Information Driver v3. You can download it via Hubitat Package Manager.
Before you unplug power you should go to settings and use the shutdown button. Once the hub led turns red then you can unplug and wait a minute or so. Uncontrolled unplugging can cause database corruption.
Always unplug from the outlet, not from the hub, which could cause a weak connection. You can also use the reboot button from the settings page.
