Ongoing Assessments

The GPG program is assessing technologies in the following areas:

In the News

Three technologies selected for evaluation from the 2017 RFI.

Ongoing Assessments


Dual Zone Indoor Shades [PDF - 246 KB] Dual zone indoor shades integrate two separate daylight control strategies into a single unit—an upper louvered blind that maximizes daylight harvesting and a lower roller shade that controls glare and reduces window heat gains and losses. Findings available in 2018.

Phase Change Materials [PDF - 215 KB] Phase change materials can be integrated into wall, roof, ceiling, attic and floor assemblies to improve the thermal performance of the building envelope and reduce air conditioning load. GPG Regional Project. Findings available in 2018.


Adaptive Control for Chilled Water Plants [PDF - 186 KB] This technology optimizes the operation of central plant cooling systems by using an adaptive control algorithm to achieve efficiencies across a building’s entire chilled water system, including chillers, air handling units, fan coils, and other distribution equipment. This technology claims to represent a significant improvement over the current state-of-the-art, which uses modeling, rather than real-time information, to optimize operations. GPG test-bed measurement and verification: Charles F. Prevedel Federal Building in Overland, MO.

Circuit-Level Energy Monitoring [PDF - 213 KB] This technology analyzes energy use in real time on a circuit-by-circuit basis. Compared to traditional submetering, the data delivered is more granular and installation promises to be less costly. Findings available 2018.

Predictive HVAC Optimization [PDF - 216 KB] This cloud-based software layers weather and building-use data on top of existing building automation systems to optimize HVAC operational strategies per each 24-hour period. This evaluation will be hosted as a joint effort with the Department of Energy. Findings available 2018.

Wireless Sensors and Analytics [PDF - 217 KB] This technology tests the promise of the Internet of Things (IoT) by using relatively inexpensive and easy-to-install wireless, lighting-fixture-based sensors that detect and record changes in occupancy, temperature, visible light, infrared radiation, and LED power consumption. Findings available 2018.


Drop-In Smart Switched Reluctance Motor [PDF - 186 KB] This “smart motor” combines an innovative electric motor design with a programmable variable speed drive and a controller that provides real time monitoring and cloud-based connectivity. Unlike induction or permanent-magnet motor designs that have remained largely unchanged for more than a century, this motor uses a switched reluctance (SR) design that purports to be simpler to manufacture and more reliable and efficient to operate. GPG test-bed measurement and verification: San Ysidro Port of Entry in San Ysidro, CA.

High Efficiency HVAC [PDF - 160 KB] High efficiency heating, ventilating, and air conditioning (HVAC) units are a new class of rooftop unit (RTU) that can reduce building energy needs by half without reducing HVAC effectiveness. Blowing conditioned air through central shafts and ceiling spaces, the new technology incorporates variable speed controls on the refrigerant compressor, valves, and fans to efficiently heat or cool designated spaces as desired. The high efficiency HVAC RTUs capture and reuse heat, cold, and humidity from a building’s exhaust air and utilize waste heat from the compressors to reheat air that has been purposely over-cooled. Greater Southwest Regional Project. Findings available in 2018.

High Performance Circulator Pump [PDF - 217 KB] This technology saves pump energy by incrementally adjusting a pump’s flow speed to a building’s changing demands. It also generates useful data by tracking temperature, flow rate, and energy use. Findings available in 2018.

Intelligent Energy Valves for Hydronic Systems [PDF - 213 KB] This technology reduces the power consumed by pumps in hydronic heating and cooling systems by maintaining an optimal temperature difference (Delta-T) between fluid supply and return lines. Findings available in 2018.

Smart Scrubbers for HVAC Load Reduction [PDF - 214 KB] This technology reduces the volume of outside air required to maintain indoor air quality (IAQ) by using absorbent materials to selectively remove contaminants from HVAC airflow. Findings available in 2018.


LED Retrofit Kits with ALC [PDF - 247 KB] This evaluation will test five different LED-based lighting systems with integrated advanced lighting controls (ALC). The retrofit kits are designed to upgrade existing recessed fluorescent troffer lighting to LED lighting without requiring a full fixture replacement or work in the ceiling plenum. Findings available in 2018.


Chemical-Free Water Treatment for Process Water [PDF - 244 KB] The chemical-free treatment under consideration uses an electro-catalytic process to control scale, corrosion, and bio contamination, thereby reducing or eliminating the need for blowdown water and chemical decontaminants. Findings available in 2018.

Monitoring and Partial Water Softening [PDF - 186 KB] This chilled water plant monitoring and control system optimizes chilled water system performance by reducing the amount of “blowdown” water used to remove mineral build-up. The technology consists of two components—continuous programmable logic control (PLC) monitoring and side-stream filtration. The combination of integrated monitoring and control promises a significant improvement over the current state-of-the-art. GPG test-bed measurement and verification: Lloyd D. George Courthouse in Las Vegas, NV.

The GPG program enables GSA to make sound investment decisions in next generation building technologies based on their real world performance.

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