While not anything necessarily "groundbreaking," I think that a building with several busy elevators could see a slight drop in power usage if they tweaked the settings so that the elevator doors stayed open slightly longer when it was lighter (less full).
As I drove in to work this morning, with my wife and sick child at home behind me and my as-of-yet unfullfilling and more than a little frustrating job ahead of me... with the morning sun shining directly into my eyes... I had a somewhat existential moment. On a side note, I wish the taco trucks opened early so I could get huevos ranchero y chorizo in a warm tortilla.
