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]

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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)