Published Findings

GPG has completed assessments of the following technologies:

BUILDING ENVELOPE

• Chromogenic Windows: Electrochromic and Thermochromic, March 2014
• Dual-Zone Indoor Shades, September 2018
• Electrochromic Windows for Office Space, November 2017*
• Electrochromic Windows for Land Ports of Entry, May 2015*
• Hi-R Low-E Window Retrofit System, December 2013*
• Low-E Window Film, February 2017*
• Solar Control Films, January 2015
• Vacuum Insulated Panels for Roofing Applications, March 2014

ENERGY MANAGEMENT

• Advanced Power Strips for Plug Load Control, September 2012*
• Chiller Plant Control Optimization System, September 2016*
• Socially Driven HVAC for Personal Control, December 2015*
• Submeters and Analytics: Full Panel, May 2019*
• Submeters and Analytics: Wireless Current Transformers, June 2019*
• Wireless Thermostats for Pneumatic Systems, March 2015*
• Wireless Sensor Networks for Data Centers, March 2012*

HVAC

• Condensing Boilers, Updated July 2014*
• Fan Belts: Synchronous and Cogged, March 2014*
• High-Performing Commercial Rooftop Units, April 2018*
• Indirect Evaporative Cooler, March 2014
• Software-Controlled Switched Reluctance Motor, November 2019*
• Small Circulator Pumps with Automated Control, September 2018*
• Smart Ceiling Fans, September 2016
• Variable Refrigerant Flow, December 2012*
• Variable-Speed Direct-Drive Screw Chiller, Updated November 2017*
• Variable-Speed Magnetic Bearing Chiller, December 2013*

LIGHTING

• Advanced Lighting Controls and LED, November 2018*
• Integrated Daylighting Systems, July 2014*
• LED Downlight Replacement Lamps for CFL Fixtures, April 2016*
• LED Fixtures with Integrated Advanced Lighting Controls, August 2015*
• Occupant Responsive Lighting, September 2012*
• TLED Lighting Retrofits with Dedicated Drivers, September 2016*
• Wireless Advanced Lighting Controls, May 2015*

ON-SITE POWER & RENEWABLES

• Honeycomb Solar Thermal Collector, August 2016*
• Photovoltaic System Performance, December 2012*
• Photovoltaic-Thermal Hybrid Solar System, January 2015
• PV Guidance, December 2013
• Wood-Pellet Biomass Boilers, June 2014*

WATER

• AWT: Advanced Oxidation Process for Cooling Towers, January 2019*
• AWT: Catalyst-Based Scale Prevention for Domestic Hot Water Systems, February 2015*
• AWT: Electrochemical for Cooling Towers, December 2018*
• AWT: GSA Guidance for Cooling Towers, January 2020*
• AWT: Monitoring & Partial Softening, October 2020*
• AWT: Salt-Based and Chemical Inhibition for Cooling Towers, February 2019*
• Weather Station for Irrigation Control, January 2015*
• Wireless Soil-Moisture Sensors for Irrigation Control, April 2015

*M&V Results Demonstrate Deployment Potential for GSA