On a similar note, I was really impressed by Microsoft's team that manages this for their whole campus. There was an article a while back that described the cha

On a similar note, I was really impressed by Microsoft's team that manages this for their whole campus. There was an article a while back that described the challenges they faced, like heaters and AC in the same building competing to keep temperature within a certain range, and the huge benefits they realized when they hooked it all up to a central sensor/management system.