I have never thought about this as an actual action against excesive energy consumption -- moreover, I am surprised that anyone could. It's just one hour. Some

I have never thought about this as an actual action against excesive energy consumption -- moreover, I am surprised that anyone could. It's just one hour. Some years ago I lived in a student's dormitory (a big and tall building), and there were people who organized similar project every year: they negotiated with students that only some rooms in given hour would be lighten up. They made it so the building showed some image (lightbulb, for example). In this case, no one (I hope) thought that participants want to lower energy footprint of the building. It was all about a nearby highway and all the drivers.