I am wondering how much residual energy you use for your nerd equipment. As my graphs show I consume about 30 W for various gadgets: A cable modem, a WLAN router, a switch and my (brandnew) QNAP TS219P NAS server. I was using an old PC as a home server years ago, but the energy consumption of this beast was just to high. The new QNAP server runs Debian and runs several services. For example, the Fluksobot runs on it, and my continuous temperature monitoring.
Although I am pretty happy with my current setup: Do you see any room for improvement? How does your setup look like?