Publications

IES LD+A Research Matters: Short-term Color Preference Comparisons are Inadequate for Optimizing Long-term Illumination

04/01/2016

The evaluation of the color rendering performance of electric lighting sources has become a controversial issue, especially in California, where high color fidelity requirements were recently unanimously approved by the California Energy Commission for the next version of energy efficiency requirements for new buildings and major retrofits (Title 24) and light sources (Title 20).  Opponents of the new version of the California energy codes have claimed that the new requirements will result in increased energy consumption and higher cost.  Further, they have claimed that color fidelity metri

Residential Lighting: What's New in the 2016 Title 24, Part 6 Code?

Residential Lighting: What's New in the 2016 Code?
02/08/2016

California's new residential Building Energy Efficiency Standards take effect on January 1, 2017. The 2016 Standards focus on several key areas to improve the energy efficiency of newly constructed buildings, additions and alterations to existing buildings. The most significant efficiency improvements address attics, walls, water heating and lighting. The California Energy Commission estimates that the 2016 standards will deliver approximately 281 gigawatt-hours of electricity savings annually and reduce statewide greenhouse gas emissions by 160,000 metric tons.

Nonresidential Lighting: What's New in the 2016 Title 24, Part 6 Code?

Nonresidential Lighting: What's New in the 2016 Title 24, Part 6 Code?
02/08/2016

California's new nonresidential Building Energy Efficiency Standards take effect on January 1, 2017. The 2016 Standards focus on several key areas to improve the energy efficiency of newly constructed buildings, additions and alterations to existing buildings. California's Standards now align with ASHRAE 90.1 2013 standards and include more stringent lighting power density limits for many indoor and outdoor spaces. Updates enhance and simplify many aspects of the 2013 requirements including indoor lighting control requirements for new construction and alterations.

2015 Lighting Technology Overview

2015 Lighting Technology Overview
11/30/2015

The 2015 Lighting Technology Overview (LTO) provides overviews of commercial and residential lighting technologies and strategies with the potential to significantly reduce California’s lighting energy use. The guide includes information on expected energy savings, factors to consider when comparing products, sample products, and case studies for indoor and outdoor lighting and controls technologies. Products in the guide include:

Advanced Lighting Control Systems: Bench Testing

11/04/2015

Advanced lighting control systems provide networked control and monitoring capabilities of connected luminaires via onboard metering and system reporting features.  These advanced features allow system owners to dynamically balance visual comfort and lighting energy use.  CLTC, in collaboration with SDG&E, developed a technology validation program to determine the accuracy and reliability of onboard metering and system reporting features of advanced lighting control systems.

IES LD+A Research Matters: Defining Accuracy - Energy Use Reporting through Lighting Control Systems

11/01/2015

One of the promises of networked lighting controls is to monitor energy use over time and adjust the system to achieve the best possible performance.  Facility managers can match the reporting to expectations and change settings to capture maximum savings.  The promise of real-time energy monitoring has also piqued the interest of utility program managers in locations in the U.S. where rebates assist with the accelerated adoption of emerging technologies. 

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