Glass in GSA Buildings

Embodied carbon in buildings is a key factor in building decarbonization and while it is generally small compared to operational carbon, the percentage is expected to grow over time. For this reason, GSA is dedicating $2.15 billion towards the procurement of low embodied carbon materials in the construction and alteration of GSA buildings. These materials must have substantially lower embodied carbon than the industry averages, as determined by the EPA, in order for them to qualify for the funds. In addition, the EPA is providing $250 million to assist the industry in EPD development. The GSA funds must be obligated by September 30, 2026, and have allowed for construction assemblies, such as window or curtain walls, to qualify if the EPDs covering 80% of the assembly cost or weight are submitted (therefore, minor parts such as sealants, hardware, fasteners, etc. can be ignored). In other words, the current flat glass EPD that covers the bulk of the carbon impact can be submitted as is. On the other hand, GSA maintained the requirements for facility-specific EPDs “where feasible,” as well as an ENERGY STAR Energy Performance Score for the supplying flat/float glass plant. Here is where the glass industry, specifically primary flat glass manufacturers, may find some obstacles.