Daylighting

LD+A Research Matters: Performance Evaluation of a Solar Tracking Lighting System

06/07/2022
CLTC recently partnered with the California Energy Commission, Sonoma Clean Power Authority, and Frontier Energy Inc. to evaluate opportunities in emerging daylighting technologies. One such technology is a solar-tracking lighting system, which delivers daylight via optical fibers to core building areas that otherwise do not have access to daylight.

Energy Code Lighting Language Cleanup Initiative

The California Lighting Technology Center, in collaboration with Southern California Edison, RMS Energy Consulting LLC, and the California Energy Alliance, are establishing a working group of industry stakeholders to help develop recommendations that will simplify and clarify the nonresidential lighting and lighting controls language contained in the 2022 Title 24, Part 6 Building Energy Efficiency Standards.

CLTC Releases 2019 Update to the Daylight Harvesting for Commercial Buildings Guide

Published: Fri, 04/23/2021

CLTC is excited to release our updated Daylight Harvesting for Commercial Buildings guide!  This publication provides guidance towards meeting and exceeding California's 2019 Energy Code for daylight harvesting.

Daylight design guidelines and Energy Code requirements are provided in an easy to read, side-by-side layout, organized into sections for each building-related discipline that impacts daylight performance from building siting, through architectural and interior design, to construction, commissioning and operation. 

Daylight Harvesting for Commercial Buildings

Daylight Harvesting for Commercial Buildings for 2019 Building Energy Efficiency Standards
04/13/2021

CLTC is excited to announce an update to the Daylight Harvesting for Commercial Buildings publication!  This in-depth tool provides guidance towards meeting and exceeding California's 2019 Energy Code for daylight harvesting.

Daylight design guidance and associated Energy Code are provided in an easy to read, side-by-side layout, organized into sections for each building-related discipline that impacts daylight performance from building siting, through architectural and interior design, to construction, commissioning and operation. 

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. 

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