According to EPA’s Energy Star program, lighting consumes close to 35 percent of the electricity used in U.S. commercial buildings and affects other building systems through its electrical requirements and the waste heat it produces. Upgrading lighting systems with efficient light sources, fixtures, and controls can reduce lighting energy use, improve the visual environment, and affect the sizing of HVAC and electrical systems. The Green Proving Ground program is investigating the effectiveness of technologies such as Occupancy Responsive Lighting Solutions and Integrated Daylighting Systems in reducing lighting energy usage while maintaining occupant satisfaction.
Published Lighting Findings
The Green Proving Ground program, in association with federal laboratories, has subjected the following technologies to real-world measurement and verification in GSA buildings. Links to published results are listed below.
- 22. Wireless Advanced Lighting Controls, May 2015
- 15. Integrated Daylighting Systems, July 2014
- 02. Occupant Responsive Lighting, September 2012