GPG Validated Technologies

Below are testbed results for technologies with deployment potential for GSA’s real-estate portfolio. Results can be downloaded as an interactive PDF or viewed in the table below. Note that payback and performance are site-specific and will vary. Also, since the testbed results were published, prices may have changed and there may be other comparable technologies that meet performance specifications. Download the PDF to see top-level testbed results. [PDF - 546 KB]



GPG Validated Technologies with Deployment Potential for GSA

Category Technology Deploy where? Energy/water savings 1 Payback 2
Building Envelope Electrochromic Windows for Office Space Facilities where outside views are critical. Savings vary N/A
Building Envelope Electrochromic Windows for Land Ports of Entry Facilities where window glare compromises mission-critical outdoor visibility. N/A N/A
Building Envelope Hi-R Low-E Window Retrofit System Buildings in cold climates with single-pane windows. 41% 7
Building Envelope Low-E Window Film All Climates. Best payback for single-pane clear windows. 29% perimeter HVAC savings 2-6
Building Envelope Lightweight Quad-Pane Windows New construction and major renovation 24% heating and cooling 1-3
Building Envelope Lightweight Secondary Windows Retrofit for single-pane windows 15% whole building 7
Energy Mgmt. Advanced Power Strips for Plug Load Control Deploy broadly. 26-48% 1-2
Energy Mgmt. Chiller Plant Control Optimization System Centrifugal chillers with loads > 3 million ton-hrs/yr 35% 5
Energy Mgmt. Submeters and Analytics: Full Panel Overtime utility billing. N/A N/A
Energy Mgmt. Submeters and Analytics: Single-Circuit Meter Overtime utility billing. N/A N/A
Energy Mgmt. Submeters and Analytics: Wireless CTs Fault detection and diagnostics. N/A N/A
Energy Mgmt. Wireless Thermostats for Pneumatic Systems Facilities with pneumatic control. 43-52% heating, 20% cooling 2-10
Energy Mgmt. Wireless Sensor Networks for Data Centers Data Centers. 17% total, 48% cooling load reduction 2
HVAC Condensing Boilers End-of-life replacement of conventional boilers. Life-cycle cost effective when 3 -5 % more efficient than high-efficiency boilers. 14% 4-7
HVAC Fan Belts: Synchronous and Cogged VAV Fans, retrofit with synchronous drive belts. CV Fans, replace at end-of-life with cogged V-belts. 2-20% 1-4
HVAC High-Performing Commercial Rooftop Units End-of-life replacement 26% 3.8
HVAC Software-Controlled Switched Reluctance Motor End-of-life replacement 4% Immediate
HVAC Small Circulator Pumps with Automated Control End-of-life replacement 26-96% 6
HVAC Variable Refrigerant Flow Buildings that are 5,000 to 100,000 ft² with electric reheat in cold climates, with limited room for ductwork changes. 34% projected relative to code-compliant HVAC N/A
HVAC Variable-Speed Maglev Chiller End-of-life replacement of rotary screw chillers. 42% 5
HVAC Variable-Speed Direct-Drive Screw Chiller End-of-life replacement for water-cooled chillers 35% better than FEMP-standard, comparable to MBC chiller 2
Lighting Advanced Lighting Controls and LED Facilities with high utility rates. 43% compared to LED baseline 7
Lighting LED Downlight Replacement Lamps for CFL Fixtures Where advanced lighting controls are not desired or useful. 40-50% 3
Lighting LED Fixtures with Integrated Advanced Lighting Controls Consider for retrofits with EUI > 3.25 kWh/ft²/yr and utility rates > $0.10 kWh. 69% over GSA average 9-12 Retrofit; 2-3 New Construction
Lighting TLED Lighting Retrofits with Dedicated Drivers Fixtures where lenses and sockets are in good condition and ALC is useful. 27-29% 6
Lighting Wireless Advanced Lighting Controls Integrate with LED. Consider for retrofits with EUI > 3.25 kWh/ft²/yr and utility rates > $0.10 kWh. 54%, 78% with LED 3-6
On-Site Renewables Honeycomb Solar Thermal Collector Central hot water systems with electric heating and large uniform loads. N/A 10
On-Site Renewables Photovoltaics Price should drive PV selection. PV effective even in 4-season climates. N/A 10 in 2015 (19 @ 2011 pricing)
Water AWT: Salt-Based & Chemical Inhibition for Cooling Towers Consider for all cooling towers–both salt-based and chemical-scale inhibition systems can be retrofitted to any cooling tower. 23% water savings 3
Water AWT: Advanced Oxidation Process for Cooling Towers All cooling towers. Service plan should include leasing the system. The cost of AOP service+leasing approximates the cost of traditional chemical treatments. 26% water savings 2
Water AWT: Catalyst-Based Scale Prevention for Domestic Hot Water Systems Facilities with hard water > 121 MG/L. N/A 2
Water AWT: Electrochemical for Cooling Towers All cooling towers. Most cost-effective in areas with high water costs or where water is excessively hard, has high pH values and/or large amounts of total dissolved solids. 32% water savings 2.5
Water AWT: Monitoring & Partial Softening All cooling towers. Continues standard and familiar water treatment practices and may offer an easier and more failsafe deployment opportunity for GSA facilities. 15% water savings 3
Water Weather Station for Irrigation Control Turnkey weather-based irrigation systems recommended. Areas with intermittent rain will have higher savings. 20-40% savings projected 2-4

1 Savings compared to incumbent technology or practice.

2 Payback, expressed in years, is at average fuel cost ($0.11/kWh and $7.5/Mcf)

Last Reviewed: 2022-02-23