Power iMac and Mac Mini Remotely

My iMac and my Mac Mini are in my study and, for green reasons, I prefer to keep them powered off not sleeping.

I see many questions on here about getting the Apple devices to use Wake on LAN to wake from Powered OFF state. However, all the answers state that it is only possible to use WoL to wake from Sleep state.

With all my Windows and Linux machines, I can use Wake on LAN to wake them from the Powered OFF state. Not only that but it is EASY to set up.

I have even tried connecting the Apple devices to smart switches and enabling their capability to "Start up automatically after a power failure". If you shut down the device properly, this does not work! I don't want to just remove the power from a device (by turning off the smart switch) and risk loss of data or hardware damage by uncontrolled loss of power.

A very disgruntled

Joe.

[Edited by Moderator]