Daylighting

CLTC Releases 2019 Nonresidential Lighting & Electrical Power Distribution Guide

Published: Fri, 04/03/2020

CLTC is excited to announce that our 2019 Nonresidential Lighting and Electrical Power Distribution Guide is now available!  The guide assists builders and lighting industry professionals in navigating the nonresidential lighting and electrical power distribution portions of California’s Building Energy Efficiency Standards (Title 24, Part 6 or Energy Code) that took effect on January 1, 2020. 

Evaluating Opportunities in Advanced Daylighting Retrofits

Interior lighting remains a large component of electricity use in non-residential buildings. In California, electric lighting has both a direct effect on peak load, and an indirect effect by increasing cooling requirements during summer peak hours. Effective daylighting combined with electric lighting dimming controls can directly offset electric lighting energy by reducing lighting levels when necessary to reduce the load on the cooling system.

Nonresidential Lighting & Electrical Power Distribution Guide for 2019 Building Energy Efficiency Standards

04/07/2020

The California Lighting Technology Center’s Nonresidential Lighting and Electrical Power Distribution Guide assists builders and lighting industry professionals in navigating the nonresidential lighting and electrical power distribution portions of California’s Building Energy Efficiency Standards (Title 24, Part 6 or Energy Code). The 2019 iteration of the Energy Code took effect on January 1, 2020. 

What’s New in CLTC’s Project Portfolio

Published: Mon, 11/23/2015
Energy-Efficient Lighting System Evaluations for Commercial Applications

The potential to reduce energy consumption in existing and commercial buildings is enormous. On average, 30% of the energy used in commercial buildings is wasted, according to the U.S. Environmental Protection Agency. Lighting has a large potential for energy savings for any U.S. building end use, with a significant fraction of that potential coming from lighting controls.

Energy-Efficient Lighting Systems Evaluations for Commercial Applications

Energy-Efficient Lighting Systems Evaluations for Commercial Applications

CLTC, in partnership with Southern California Edison, completed a project portfolio from 2014-2018 to assess controls, lighting, and daylighting technologies and their potential for commercial applications. The projects have elements of market assessment, EM&V, and selected demonstrations.

The project focus is on evaluating the following technologies:

LD+A Research Matters: Core Concepts

05/01/2011

LD+A— Core sunlighting is a practical, natural alternative for interior illumination deep within a building. Unlike other solar technologies, core sunlighting involves capturing sunlight at the building envelope, concentrating it, transporting it and regulating its release deep within the building at useful indoor lighting levels, typically only 1 percent of outdoor illumination. Significant electrical energy savings can be realized if the system incorporates automated electric lighting controls that substantially dim or completely turn off the electric lights.

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