Exterior lighting generally operates from early evening through early morning, a period of little to no renewable energy generation, which means this lighting is primarily powered by carbon-dense fossil fuels. Fossil fuel use is a significant contributor to greenhouse gas emissions (GHG), poor air quality, water pollution and land degradation. In addition, low-quality exterior lighting characterized by poor color, inappropriate light distribution, and inadequate light levels has also been linked to increased crime rates and reduced physical activity within the surrounding community.
Traditional outdoor lighting technologies operate at full power throughout the night, even when areas are vacant. This extra load, energy waste and light pollution can be averted by updating the lighting system with energy-efficient light sources and lighting controls. By installing these technologies, adaptive lighting strategies can be implemented that provide the right amount of light when and where it is needed.
The California Lighting Technology Center (CLTC) at the University of California Davis collaborated with the California Energy Commission to provide this educational video series in support of the 2016 Building Energy Efficiency Standards (Title 24). Sensors and controls can achieve significant energy savings by automatically adjusting lighting based on time of day, available task needs, daylight, occupancy, and electricity supply or cost.
CLTC is a trusted resource for up-to-date lighting information and practical guidance on energy-efficient building technologies. We would like to introduce our new Lighting Best Practices Series with the release of two publications:
CLTC, in collaboration with the Office of Naval Research, developed new, improved strategies and technologies for occupancy sensing in outdoor applications that address the shortcomings of existing strategies and technologies. The project approach included the systematic identification of the pros and cons of existing strategies and technologies, formulation of new strategies and/or technologies, and implementation of new approaches in the form of laboratory prototypes that will be tested and demonstrated in the laboratory and in the field.
CLTC is partnering with Liberty to create a zero net energy community in West Sacramento along the Sacramento River. The Liberty Lighting Guide provides design and technical specifications, application of directives, as well as Title 24 code compliance requirements for residential, outdoor, private community clubhouses, K – 8 schools, private clubhouses, neighborhood commercial spaces, parks, greenbelts, trails, sports, and recreation centers.
Due to the potential use of xenon lamps in outdoor applications, CLTC in collaboration with PG&E, developed an evaluation and testing program for xenon technology used in general illumination, outdoor applications. The research included under this project informed utilities about the performance and reliability of xenon lamps in these applications as compared to Light Emitting Diodes (LED), induction or other appropriate parking and area lighting solutions.