Successful Green Proving Ground program technology evaluations lead to the deployment of energy-saving technologies throughout the GSA portfolio. To date, eleven technologies have been identified as having broad deployment potential. As of 2015, technologies evaluated by GPG have been deployed in 215 locations, resulting in annual energy savings of 154,000 MMBtu, and life-cycle energy cost avoidance of $28 million.
Technologies deployed and planned for deployment include:
Desk-based technologies and other electronics account for roughly 25% of a building’s electricity consumption and often continue to consume power even when turned off. Based on evaluation results that demonstrated a 26% reduction in workstation plug loads, more than 16,000 advanced power strips have been deployed throughout the GSA portfolio as of 2015.
Condensing boilers capture heat typically lost through steam, and were found to be cost-effective when just 3% to 5% more efficient than high-efficiency boilers. Based on the results of GPG’s evaluation, more than 60 condensing boilers have been deployed throughout the GSA portfolio as of 2015.
Hi-R window panel retrofits, which are installed on top of existing single-pane windows, reduced heating loads by up to 41% at a GSA test bed location in Provo, Utah. Hi-R window panel retrofits are planned for deployment covering a workspace of almost 3 million GSF.
Maglev chillers eliminate inefficiencies caused by friction, and demonstrate energy savings of 42%, compared to rotary-screw chillers. Based on the results of a GPG evaluation, almost 40 maglev chillers have been deployed throughout the GSA portfolio as of 2015, with an additional 20 pending installation.
Wireless pneumatic thermostats (WPT) provide conventional pneumatic control systems with direct digital control functionality, with payback as low as 2 years. Based on the results of a GPG evaluation, over one million GSF of workspace is planned for retrofit with WPTs beginning in 2015.
Data centers consume roughly two percent of all energy used in the United States. Based on evaluation results that showed a 48% reduction in cooling load and a 17% reduction in overall energy use, GPG supported the installation of wireless sensor networks in two GSA-operated data centers.
* Deployed through Energy Savings Performance Contracts (ESPCs)