A Dawning Day for Energy-Efficient Electrochromic Windows

Photo of an Advanced Windows Testbed room
January 2007

To help EC windows realize their potential to save energy in California and throughout the U.S., DOE and the California Energy Commission funded Berkeley Lab's Environmental Energy Technologies Division to conduct a three-year field test of EC windows in a realistic office-building setting. This test, along with other tests and computer simulations, was intended to allow the Berkeley Lab researchers to quantify the performance of EC windows and refine the system to improve its performance and reliability.