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Energy Management


Preliminary Technology Assessments

The Green Proving Ground program, in association with federal laboratories, is currently subjecting the following technologies to real-world measurement and verification in GSA buildings. Preliminary technology assessments are available below as PDFs. Findings from these investigations will be available by 2015.

Central Plant Optimization Strategy > This central plant control technology is designed to optimize energy use in chilled water systems. To reduce energy consumption, chillers, cooling towers, and associated pumps are operated as a single system. In combination with the necessary Variable Frequency Drive (VFD) equipment, this technology applies a control algorithm to maintain optimal differential system pressure, reducing pumping energy and equipment runtime.

Socially Driven HVAC > The socially driven web-based thermostat is a heating, ventilation, and air conditioning (HVAC) control system that enables office building occupants to control their thermal environment through a mobile device or web page. The software collects and processes occupant preferences in a “social networking /gaming” environment; artificial intelligence technologies then calculate the most efficient way to satisfy those preferences using the building’s HVAC system.

Variable-Speed Chiller Plant Control > By treating the chilled water plant as an optimized complete system, variable-speed chiller plant control technology saves energy, water, and even provides the possibility of an overall plant-size reduction. 


The Green Proving Ground program leverages GSA’s real estate portfolio to evaluate innovative sustainable building technologies.



Green Proving Ground

GPG, GPG Technologies, Green Proving Ground, HVAC