Our Publications

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LD+A Research Matters: Circadian Lighting Design - Leveraging the Melanopic Efficacy of Luminous Radiation Metric

Lighting design projects often include multiple design constraints. For example, a lighting design should meet target light levels, limit glare and provide appropriate color fidelity while not exceeding the power or energy budget defined for the project. For select projects, circadian considerations have recently been added to the design criteria list. Circadian lighting is defined as lighting that influences a non-visual, physiological response within the human body.

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Residential Lighting: What's New in 2019 Title 24, Part 6 Energy Code?

California's new residential Building Energy Efficiency Standards take effect on January 1, 2020. The 2019 Energy Standards focus on several key areas to improve the energy efficiency of newly constructed buildings, additions and alterations to existing buildings. 

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IES LD+A Research Matters: California's 'Million LED Challenge' Sets an Ambitious Goal

This year, California demonstrated leadership as the first state in the country to set appliance efficiency regulations for general service lamps that ensure both lighting quality and efficiency.  To build on this leadership and accelerate the adoption of the high-quality, energy efficient LED lamps, in July 2018 the University of California launched a new procurement program known as The Million LED Challenge.  The program supports the UC Office of the President’s Carbon Neutrality Initiative, which commits the UC to emitting net zero greenhouse gases from its buildings and vehic

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2019 Title 24, Part 11 CALGreen Moves to 3,000 K for Select Outdoor Applications

CLTC participated in the 2019 Title 24, Part 11 CALGreen code-development process to incorporate lower CCT standards for certain outdoor lighting applications. CLTC provided key testimony and support during public meetings in support of this specification.  Considerable scientific data currently exists indicating that light at night can be a significant issue in terms of circadian disruption leading to poor health and wellness outcomes.

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Daylight Harvesting for Commercial Buildings Guide

The CLTC is excited to announce a new publication in our Lighting Best Practices series, the Daylight Harvesting for Commercial Buildings Guide!  This publication provides guidance towards meeting and exceeding California's Building Energy Efficiency Standards for daylight harvesting.

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IES LD+A Research Matters: LiDAR Shows Potential for Increasing Sensor Coverage Area in Outdoor Applications

LiDAR has made the news in recent months as part of various high-profile archeological and geological projects. From discovering Mayan ruins to mapping our coastal seashores, LiDAR is the tool of choice. The technology also plays a critical role in autonomous vehicles, security systems and agriculture. LiDAR, shorthand for Light Detection and Ranging, may also prove useful in common lighting applications including potential use as a long-range occupancy detector to control outdoor lighting.

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Integrated Outdoor Lighting Solutions

The CLTC is providing an environment to test and evaluate an outdoor lighting solution comprised of components from multiple manufacturers. This test program is evaluating technology components from leading lighting manufacturers to evaluate performance and interoperability of smart lighting components from multiple manufacturers.  The solution for this test is comprised of outdoor light fixtures from Leotek, Xitanium SR LED Drivers from Philips Advance, network lighting controls from Silver Spring Networks and a CIMCON lighting controller.

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Resources for Today's Lighting Products!

CLTC, in collaboration with the California Energy Commission, hosted an educational webinar on Thursday, February 8, 2018 at 10 AM.  The webinar materials:

  • Provide an overview of what's new in the Title 20 lighting standards as of January 1, 2018;
  • Point manufacturers to key resources to assist with the product compliance process;
  • Detail the differences in today's lighting products for retailers and consumers; and
  • Link attendees to resources for future reference!

Webinar materials are provided here for your use.