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Running servers when they are not needed can waste a considerable amount of energy. This project aims at sending Amahi server to suspend or poweroff when not needed. To do so, Amahi Energy Saver regularly scans for connected clients. If no client is connected, the system suspends after a configurable period. When the system is to be used again, simply wake it up with WOL (ref. http://en.wikipedia.org/wiki/Wake-on-LAN). There are many tools to generate WOL packets, and it is even possible to wake your server over the internet (good link: http://www.wakeonlan.me/). Part of this project is a Windows client, which allows to wake the server with two mouse clicks.