Very nice visualization of power consumption at a coal plant in Finland by the folks at Nuage Vert (“Green Cloud”). 

In February 2008, they had 4000 residents and 5 “large scale” companies participate in an unplug event. As the power went down, they made their cloud get bigger (which is a bit odd, shouldnt it get smaller?). In any case, this is a nice concept and won the 2008 Ars Electronica Golden Nica.

Link (via archiact)