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Building Envelope

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

In the News: From the 2014 Program Lineup

Electrochromic Windows with Dynamic Controls > In GPG’s ongoing exploration of EC windows, dynamic controls introduce the ability for auto-tinting windows to learn from occupancy patterns and individual preferences to improve user satisfaction and environmental quality. Findings available in 2016.

Low-Emissivity Window Film > This film makes it possible achieve low-e glazing characteristics without heavy manufacturing or full window replacement. Findings available in 2016.


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 2016.


The Green Proving Ground program leverages GSA’s real estate portfolio to evaluate innovative sustainable building technologies.



Green Proving Ground

GPG, GPG Technologies, Green Proving Ground, High-Performance Glazing for Curtain Walls