Menu Toggle Software

Indoor Lighting Controls

Measure Description

The proposed code changes for indoor lighting controls are listed below.

Mandatory Autometic 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.


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.

Presentations amd Meetings

  1. Presentation from September 2016 Stakeholder Meeting
  2. Notes from September 2016 Stakeholder Meeting
  3. Presentation from March 2017 Stakeholder Meeting
  4. Notes from March 22, 2017 Stakeholder Meeting


  1. Needs Assessment Report
  2. CASE Study Results Report
  3. Final CASE Report
  4. Draft CASE Report

Give Us Your Feedback

The Statewide CASE Team values input from all stakeholders engaged in the Title 24, Part 6 code change process. We encourage the open exchange of code change comments and concerns.

  • Use the form above to provide feedback on this measure.

Verified by MonsterInsights