Green Proving Ground

GSA's Green Proving Ground (GPG) program leverages GSA's real estate portfolio to evaluate innovative sustainable building technologies and provide recommendations for their deployment. As of 2015, GSA has deployed five GPG technologies in 215 locations, resulting in annual energy savings of 170,000 MMBTU and life-cycle energy cost avoidance of $33 million. Three of these technologies have been deployed through Energy Savings Performance Contracts.

GPG assesses technologies in the following categories: building envelope, energy management, HVAC, lighting, water, and on-site power and renewables. Technologies tested by GPG include:

  • Advanced power strips: Power strips that employ pre-progammed timers to de-energize plug-in devices effectively manage plug load energy and significantly reduce electricity consumption. GPG's evaluation found a 26% reduction in energy use at work stations and 50% in printer rooms and kitchens. Based on the results of this evaluation, GSA deployed over 16,000 advanced power strips throughout its portfolio in 2014.
An evaluation by GPG found a 26 percent reduction in energy use at work stations and a 50 percent reduction in energy use in printer rooms and kitchens. Schedule timer with refined controls resulted in average enery reduction of 48 percent. GSA deployed over 16,000 advanced power strips throughout its portfolio in 2014.
  • Condensing boilers: Condensing boilers offer greater efficiency than conventional boilers by capturing heat that is typically lost through steam. When return water temperatures (RWT) are less than 130°, condensing boilers will outperform conventional boilers by a significant margin. GPG's assessment found energy savings of greater than 14%. Based on the results of this evaluation, more than 60 condensing boilers have been deployed throughout the GSA portfolio as of 2015.
These charts show the efficiency of condensing boilers at various water temperatures. When return water temperatures (RWT) are less than 130 degrees, condensing boilers will outperform conventional boilers by a significant margin. The GPG assessment found energy savings of greater than 14 percent.
  • Wireless pneumatic thermostats (WPT): This new technology can be retrofitted to an existing pneumatic control system to give them the energy-conserving functionality of more contemporary control systems. GPG's evaluation found that WPT successfully brings direct digital control to conventional pneumatic systems at a fraction of the cost of a full system change-out. Based on the results of this evaluation, WPT is planned for deployment in over 2 million GSF of federally-owned space.
Wireless pneumatic thermostats (WPT) can help conserve energy by lowering the overall temperature when the building is unoccupied. WPT is planned for deployment in over two million square feet of federally-owned space.
Last Reviewed 2016-07-13