As electrochromic device (ECD) emerges into the market, the necessity of cost reduction via high-throughput manufacturing is,unavoidable. Inorganic monolithic ECD has compatibility in its manufacturing steps, allows continuous processing and hence low-cost ECD. A roll-to-roll (R2R) production is the industrial standard for high-throughput processing and was chosen to synthesize ECD on polymeric substrates. Preliminary success by implementing methods compatible to the aforementioned R2R processing has been achieved; however, continuous test-runs on an R2R machine are still limited. (c) 2007 Elsevier B.V. All rights reserved.