Heliotrope, the winner of the competition was awarded the top cash prize of $50,000 (about €38,000). Based in Oakland, CA, Heliotrope is a developer of energy-efficient electrochromic (EC) glass that switch reversibly between three states: solar transparent, heat blocking, and heat and light blocking (i.e. darkened). Heliotrope's technology can be relevant to a range of windows products, including buildings, satellites and automobiles. The company is focused on the commercial window market given the immediate potential of its technology to improve the efficiency of building lighting, heating, and cooling. Heliotrope's smart window technology leverages a novel electrochromic effect discovered by the founders to control light and heat transmission dynamically. A small voltage controls the optical state of the device. Minimal power is consumed during switching and almost none is used to maintain either of the two solar blocking states. This yields great flexibility for system integration and low cost installation. PlanGrid, the second-place winner received a cash-prize of $25,000 (about € 19,000). Based in San Francisco, Calif., PlanGrid is a complete collaborative platform for construction information and the fastest PDF viewer in the universe. PlanGrid is a platform that combines the power of the cloud with the mobility of the iPad to provide a service that finally allows builders to view and communicate with all their project information right from the field. PlanGrid allows builders to easily distribute, version and view all their drawings, specifications, submittals, schedules and progress photos right on the iPad. PlanGrid is a SaaS (Software as a Service) business that charges a monthly recurring subscription fee per user. By leveraging cloud-based computing, PlanGrid can perform computation and image processing on people's construction documents to make the rendering of them instantaneous, even on relatively underpowered devices like tablets. SmarterShade, the third-place winner was awarded a cash-prize of $10,000 (about €7,700). Based in South Bend, Indiana, SmarterShade is a unique approach to the emerging technology being called "smart windows." A user can control the amount of light and heat entering a home or office through controlling the tint level on their window. The first generation of SmarterShade is a retrofit film system that is integrated into the window itself. This film is designed so that it will selectively tint at the push of a button. Unique features of the SmarterShade system are that it does not require wires or electricity, it is instantly switchable, and achieves full privacy- eliminating the need for blinds and shades. All of this while reducing energy usage in a home or office. SmarterShade not only gives the user the ability to tint the window, but also to control the level of tinting. A window can go from clear to dark or anywhere in between. Its products can be applied to windows that are positioned in difficult places where a traditional blind or shade is not possible; such as doors, skylights, and transportation windows. The SmarterShade system is also a well suited wire-free alternative to other "smart window" technologies that utilize electric current.The bigger prize for all NOVA Innovation Competition contestants is the opportunity to partner with Saint-Gobain in exploring potential joint development, licensing or other collaboration agreements. "This year's NOVA Innovation Competition attracted our largest and most innovative field of contestants yet," said Rakesh Kapoor, director of NOVA External Venturing. "We congratulate Heliotrope, PlanGrid and SmarterShade on their winning presentations, and we look forward to forging long lasting relationships with any NOVA Competition participant whose innovation and entrepreneurial drive aligns well with Saint-Gobain's market objectives." The NOVA Innovation Competition involved several months of assessment using an open, transparent judging process with experts from MIT, Lawrence Berkeley National Laboratory, the USGBC-NCC and Webcor, one of the world's top commercial building contractors. Of the 168 original entrants, eight finalists were notified at the end of September that they were selected to participate in the final speed-dating round at Greenbuild. The three winners were then chosen following the live speed-dating format where the eight finalists pitched their innovations to a judging panel of Saint-Gobain business leaders.