Since being appointed as the Secretary of Energy Dr. Steven Chu has been talking all about the benefits of white roofs. Now he’s going to put his own department where his mouth is by mandating that all new roofs on Energy Department buildings be either white or reflective. In his statement this week he noted the cooling effect that white roofs have on buildings — especially air-conditioned ones — as well as their ability to drastically lower energy costs – $735 million per year to be exact, if 85% of all air-conditioned buildings in the US had white roofs.
