A comparative energy analysis of three electrochromic glazing technologies in commercial and residential buildings

Results indicate that the DBEC glazings are capable of outperforming alternatives in a diverse set of locations and building types, including both heating and cooling-dominated regions. Relative to code-compliant static windows, the DBEC is capable of achieving annual primary energy savings between 6 and 30 kW h/ft2 of window area from reduced heating, cooling, and lighting demand. Relative to other advanced glazings, the savings are significantly lower, ranging from 0 to 1.2 kW h/ft2. Regional DBEC energy cost savings versus high performance static windows are presented to identify early potential market entries based on energy savings. Finally, the impacts of widespread deployment of high-efficiency LED lighting on DBEC energy savings potentials are also presented.