In a city as hot and humid as Washington, DC, the difference between what is comfortable to wear outside, and what is comfortable to wear inside, can be drastic. Having the air conditioning turned up so high in the building that I need to keep a sweater in my desk and take afternoon walks outside to warm up is a waste of energy, as well as being uncomfortable. Install adjustable thermostats in buildings - even the old ones - and set the termperature to one that matches the season (it is also often too hot in the winter). Or, follow the example of Bangladesh: http://www.csmonitor.com/Environment/Bright-Green/2009/0905/to-save-power-bangladesh-bans-suits-and-ties to make employees more comfortable outdoors, as well as indoors.
Idea No. 14923