The 100% solar powered Bullitt Center is about to open in Seattle.
… Wait a minute, isn’t that the city where it “always rains”? Yes, and that rain is harvested: The Bullit Center catches enough rainwater to survive a 100-day drought. Furthermore, the 6 stories high building has composting toilets, and geothermal wells for heating.
Since electric lighting accounts for over a quarter of the electricity consumed in a typical commercial office building, the building uses natural lightning.