Select Page

Indoor Controls

Nonresidential Lighting

Codes and Standards Enhancement (CASE) Report

The Statewide CASE Team 2019 Title 24, Part 6 Final CASE Report is available below. The Final CASE Report incorporates feedback received during utility-sponsored stakeholder meetings, Energy Commission Pre-Rulemaking workshops, and personal communication with stakeholders. We encourage stakeholders to email feedback on the Final CASE Report to You can also participate in the 2019 Title 24, Part 6 Standards updated by attending the Energy Commission workshops and submitting written comments to the rulemaking docket. Refer to the Pre-Rulemaking and Rulemaking Workshop Notices for instructions on how to submit comments to the Energy Commission’s docket (available here).

Measure Description

Mandatory Automatic Daylight Dimming Plus OFF Controls

This measure proposes to require nonresidential automatic daylight dimming controls to include the OFF step to align with ASHRAE 90.1-2016. The proposed daylighting dimming plus OFF control step will be mandatory and apply to the luminaires in the Primary Sidelit Daylit Zone and Skylit Daylit Zone. The prescriptive approach for new construction and nonresidential lighting alteration projects would require luminaires in the Secondary Sidelit Daylit Zone, in addition to the Primary Sidelit Daylit Zone and Skylit Daylit Zone, to have the daylight dimming plus OFF control step. This measure also proposes to update the existing Title 24, Part 6 Power Adjustment Factor (PAF) for daylight dimming plus OFF controls to apply only to areas that are proposed to be exempt in Section 130.1(d)2C.

Mandatory Occupant Sensing Full OFF Controls in Nonresidential Restrooms

This measure proposes mandatory occupant sensing full OFF controls in nonresidential restrooms to align with ASHRAE 90.1-2016 for new construction and lighting alterations.

Manual ON Commissioning for Automatic Time-Switch Controls 

This measure proposes that automatic time-switch controls, should they be used to comply with Section 130.1(c), be commissioned as manual ON. The commissioning with a manual ON setting would be verified by Acceptance Test Technician Certification Providers (ATTCP) during acceptance testing, when applicable. This proposal would exempt automatic time-switch controls used in the following functional spaces: industrial, single tenant retail, malls, auditoriums, concourses, lobbies and other areas open to the general public. This measure will reduce the amount of time that nonresidential indoor lighting is turned ON when there are no occupants present in the space.

Request for Feedback

The Statewide Utility Team encourages participation in the CASE Report development process through the submission of data—both primary sources and references to existing data. We are requesting data on areas such as energy savings, costs, market impacts, industry practices, barriers to code compliance, etc. from stakeholders. The data will inform the energy savings estimates, cost-effectiveness analysis, compliance and enforcement, and market impacts that will be presented in CASE Reports. Do you have feedback or data to share? Send us an email at