The Green Proving Ground program has commissioned Department of Energy National Laboratories to perform real-world measurement and verification of the following technologies in pilot installations in federally-owned buildings. Preliminary technology assessments are available below as PDFs.
Preliminary Technology Assessments
Electrochromic Windows > Electrochromic (EC) windows switch from a clear to dark state with a small applied voltage, and promise to optimize daylighting, visual comfort, and solar heat gains without the need for blinds. Window tinting can be controlled manually (using a button or switch), or by an automated building control system, which programs sensors to respond to changing sunlight levels and heat conditions. Findings available in 2015.
Glazing Retrofit Coating > This clear, water-based spray-on window coating molecularly bonds to existing windows surfaces, and is designed to reduce heat gains across the entire solar spectrum without significantly reducing transmittance of visible light. Findings available in 2014.