During the summer months in the Postal Square Building, the lights in the halls of the BLS are either dimmed or a portion are turned off. This reduces the consumption of electricity (and saves money) during these months when A/C usage is high. However, I suggest that the building keep the lights dimmed throughout the year. The workers can see just as well in the hall and it uses less electricity. If the lights are dimmed or a portion are turned off throughout the entire year, then the government can save electricity and taxpayer dollars. Also, in the postal square museum, a switch to energy efficient bulbs (especially in the historic postal lobby) may also help reduce the consumption of electricity (and save taxpayer dollars).