Is there a way to power up a Mac Mini remotely? Is there ANY way to Power Up a Mac Mini remotely?
Just to be clear, I don´t mean wake up from sleep but boot up.
Depending on how your Mac Mini is connected to the internet (wifi, ethernet, firewall, age of the machine, NAT, …) it should be possible to do it using Wake On LAN.

You could, for example, use a GUI software like WakeOnLan.