thin film that can be installed on to existing windows from inside a commercial or residential building. According to DOE energy models, their reflective electrochromic thin film is 43% more effective than the state of the art absorptive technologies and will be priced at less than 50% of competing smart windows. The use of their product can reduce air conditioning costs and related CO2 emissions by ~35%. It is wireless and user-controllable. Their product is transparent when switched off, allowing a maximum amount of light into the building. When switched to fully reflective, it will prevent ~90% of solar heating from entering. It is anticipated that it will have a 3rd mode, which will be visually transparent while rejecting infrared heating.