Transmission in commercially available fluorine doped tin oxide conductive coatings on glass (FTOs) exhibits dramatic enhancement when coated with either an electrochromic tungsten oxide coating or an electrochemically active molybdenum doped tin oxide coating via a "wet chemical deposition" technique. The former acts as the primary electrochromic electrode while the latter behaves as the electrochemically inert (passive) counter electrode in electrochromic window (ECW) configuration. This paper furnishes an insight into how cloudy or poorly transmitting FTOs can be modified so as to be suitable candidates for the electrochromic window application. © 2002 Published by Elsevier Science B.V.