6e2b6f48_Building_Envelope_Technologies__Benefits
[Technology] Smart Windows [Application] Appropriate for deployment within most building categories and should be considered in building design, renovation, or during window replacement projects. [Weighted Score] 25 [Benefits] 
Electrochromic glass uses electrical energy to transition between clear and darkened states. Darkened glass transmits less light and reduces heat gain when darkened, especially in dual-pane windows.
Federal Energy Management Program: New and Underutilized Building Envelope Technologies