Lutron Title 24-2025: Application Summary
This document summarizes the lighting and receptacle control requirements for commercial buildings in California, effective January 1, 2026. It provides suggested code-compliant solutions based on total installed cost, simplicity of design, and basic functional needs for various spaces.
Note: This guide is for informational purposes only and does not replace official energy codes. Always refer to your local building energy code or authority having jurisdiction for precise requirements.
Suggested Code-Compliant Solutions
The following table outlines suggested solutions for different space types. Refer to the diagram key for understanding the symbols used.
Diagram Key: ? = New construction, ? = Lighting retrofit, ?? = New construction and retrofit
| Local Control / Automatic Control / Other | Atrium | Break Room | Classroom, Lecture Hall, Training Room | Conference, Multi-Purpose Room | Egress Corridor | Lobby | Open Office (>250 sq ft) | Private Office (<250 sq. ft) | Restroom | Egress Stairwell | Storage Room | Facade/Landscape | Parking Garage (Not Roof) | Other Exterior |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Switching | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Multi-level or dimming | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | |||
| Timeclock | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Occupancy sensor | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Full ON | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Partial ON | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | |||
| Full OFF | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Partial OFF | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | |||
| Daylight responsive control | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | |||
| Receptacle control | ? | ? | ? | ? | ? | ? | ? | |||||||
| Demand response | ? | ? | ? | ? | ? | ? | ? | ? | ? |
For more detailed information on energy codes, visit lutron.com/energycodes.
Contact: energycodes@lutron.com
Code Requirement Summary & Daylight Zone Requirements
| Minimum Control Type | Description | Section | Daylight Zone Requirements | Daylight Exceptions |
|---|---|---|---|---|
| Switching | Lighting shall be capable of turning ON and OFF. At least one manual device for control of lighting within a space. | 130.1 (a) | N/A | N/A |
| Multi-level or dimming | Spaces > 100 sq ft with lighting power > 0.5 W/sq ft require manual dimming controls (100% to 10% or lower) and OFF capability. | 130.1 (b) | N/A | N/A |
| Timeclock | Interior: Scheduled control based on time-of-day for typical occupancy. Exterior: Scheduled control based on time of day and sunrise/sunset. | 130.1 (c) 1, 130.2 (c) 1, 2 | N/A | N/A |
| Occupancy sensor | Automatic control turns lighting ON upon occupancy or OFF after vacancy (≤ 20 min). Manual ON with vacancy sensor for manual-ON, automatic-OFF functionality. | 130.1 (c) | N/A | N/A |
| Full ON | Lighting automatically turned ON to maximum lighting power when initiated by timeclock or occupancy sensor. | 130.1 (c) 1 | N/A | N/A |
| Partial ON | Lighting automatically turned ON to 50% - 70% of maximum lighting power when initiated by timeclock or occupancy sensor. | 130.1 (c) 5 | N/A | N/A |
| Full OFF | Lighting automatically turned OFF when initiated by timeclock or occupancy sensor. | 130.1 (c) 5, 130.2 (a) | N/A | N/A |
| Partial OFF | Lighting automatically reduced by at least 50% (interior) or 20%-50% (parking garages) of maximum lighting power. Exterior: Motion sensors reduce lighting power by 50%-90% or OFF when vacant (>15 min). | 130.1 (c) 6 & 7, 130.2 (c) 3 | N/A | N/A |
| Daylight responsive control | Sensor adjusts lighting in response to available daylight for sidelight and skylight zones. Photosensor can be used as an alternate to astronomical timeclock dawn/dusk operation for exterior lighting. | 130.1 (d), 130.2 (c) 1 | Sidelighted daylight zones must be controlled separately from toplighted zones. Primary daylight zone: 1.0 x HW. Secondary daylight zone: 2.0 x HW. | Daylight control not required when total lighting power of a daylight zone is ≤ 75 W (60 W for parking garages), or total glazing/opening area is ≤ 24 sq ft (36 sq ft for parking garages). Other exceptions exist based on space type, window area, neighboring obstructions, and glass transmittance. |
| Receptacle control | At least 50% of receptacles shall automatically turn OFF based on typical occupancy or vacancy (≤ 20 min). Controlled receptacle within 6 ft of each uncontrolled receptacle. One controlled receptacle per workstation in open offices with modular furniture. | 130.5 (d) | N/A | N/A |
| Demand response | Buildings with > 4,000 W lighting power in multi-level controlled spaces must have demand responsive controls to reduce lighting power in response to an OpenAPR signal. Controlled receptacles must be capable of automatically turning OFF loads in response to a demand response signal. | 130.1 (e), 110.12 (c), 110.12 (e) | N/A | N/A |
Diagrams:
Sidelighting (Window): Illustrates daylight zones based on window head height (HW) and average ceiling height (HC). Primary daylight zone is 1.0 x HW, secondary is 2.0 x HW. A section view shows the relationship between window height and ceiling height.
Toplighting (Skylight): Illustrates daylight zones based on skylight placement and average ceiling height (HC). Primary daylight zone is 1.0 x HW, secondary is 2.0 x HW. A section view and plan view show the skylight zone.
Note on Egress and Emergency Lighting: For areas used as a path of egress or for emergency lighting, verify compliance with your local authority having jurisdiction.
Acceptance Testing: Functional testing is required for all new construction applications to ensure control hardware and software are calibrated, programmed, and functioning properly (Section 130.4).
