 Electrochromic windows, also known as smart windows, are a new technological arrangement for achieving energy efficiency in buildings, with variable transmittance of light and solar energy.These ‘‘smart windows’’ can automatically control the amount of light and solar energy passing through the windows which subsequently improves indoor comfort; for example, electrochromic glass provides better glare resistance than fritted glass in most direct sunlight applications.The efficiency of these windows will vary depending on their placement, size, and local climate conditions since these factors influence the amount of sunlight that comes in contact with these windows.