Title 24 · California Energy Code

Demand-response and automated controls

This hub summarizes where Title 24 requires, defines, and tests demand‑response and automated controls and how those controls interact with compliance credits.

Last reviewed: July 6, 2026

Overview

This part of the California Energy Code (Title 24) covers mandatory requirements and acceptance testing for controls that automatically respond to utility or market signals to reduce or shift electrical load. The core mandatory demand‑management rules are in §110.12, which specifies how demand‑responsive controls must be implemented for thermostats, zonal HVAC, lighting, electronic message centers (EMCs), and controlled receptacles, and requires OpenADR‑compatible or Energy Commission‑certified devices . Definitions and the concept of a “demand response signal” and “demand responsive control” are also defined in the code glossary and related definitions .

The code ties demand‑response functionality into acceptance and test requirements so DR measures actually perform on site: demand‑responsive lighting and receptacle controls must be acceptance‑tested per the Reference Nonresidential Appendix procedures (see §130.4 and NA7.6.3) before occupancy . Where demand‑response measures interact with energy compliance credits, Title 24 also recognizes power‑adjustment factors (PAFs) for qualifying demand‑responsive lighting in the lighting PAF tables (Table 170.2‑L and similar tables) that affect prescriptive tradeoffs and performance calculations .

In this section

Code references

Grounded in the retrieved California Energy Code — click a citation to read the verbatim passage:

  • § 2.0 High relevance — show source text

    B. Certified to the Energy Commission as being capable of responding to a demand response signal from a certified OpenADR 2.0b or a certified Baseline Profile OpenADR 3.0 Virtual End Node by automatically implementing the control functions requested by the Virtual End Node for the equipment it controls. 2. All demand responsive controls shall be capable of communicating with the VEN using a wired or wireless bidirectional communication protocol.

    1. Reserved.

    2. When the demand response signal is disabled or unavailable, all demand responsive controls shall continue to perform all other control functions provided by the control.

    3. Demand responsive control thermostats shall comply with Reference Joint Appendix 5 (JA5), Technical Specifications for Occupant Controlled Smart Thermostats. (b) Demand Responsive Zonal HVAC Controls. Nonresidential HVAC systems with DDC to the Zone level shall be programmed to allow centralized demand shed for noncritical zones as follows:

    4. The controls shall have a capability to remotely increase the operating cooling temperature set points by 4 degrees or more in all noncritical zones on signal from a centralized contact or software point within an Energy Management Control System (EMCS).

    5. The controls shall have a capability to remotely decrease the operating heating temperature set points by 4 degrees or more in all noncritical zones on signal from a centralized contact or software point within an EMCS.

    6. The controls shall have capabilities to remotely reset the temperatures in all noncritical zones to original operating levels on signal from a centralized contact or software point within an EMCS.

    7. The controls shall be programmed to provide an adjustable rate of change for the temperature increase, decrease, and reset.

    8. The controls shall have the following features: A. Disabled. Disabled by authorized facility operators; and B. Manual control. Manual control by authorized facility operators to allow adjustment of heating and cooling set points globally from a single point in the EMCS; and C. Automatic Demand Shed Control. Upon receipt of a demand response signal, the space-conditioning systems shall conduct a centralized demand shed, as specified in Sections 110.12(b)1 and 110.12(b)2, for noncritical zones during the demand response period.

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    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    (c) Demand Responsive Lighting Controls. Buildings with nonresidential lighting systems having a total installed lighting power of 4,000 watts or greater that are subject to the requirements of Section 130.1(b) or 160.5(b)4B shall install controls that are capable of automatically reducing lighting power in response to a demand response signal.

    1. For compliance testing, the lighting controls shall demonstrate a 15-percent or greater reduction in lighting power as described in NA7.6.3. The controls may provide additional demand responsive functions or abilities.
    2. For buildings where demand response controls are required, demand responsive controls shall control the general lighting in the spaces required to meet Section 130.1(b) or 160.5(b)4B.
    3. General lighting shall be reduced in a manner consistent with the requirements of Section 130.1(b) or 160.5(b)4B. Exception to Section 110.12(c): Spaces where a health or life safety statute, ordinance, or regulation does not permit the general lighting to be reduced are not required to install demand responsive controls and do not count toward the 4,000-watt threshold.
  • § 110.11 High relevance — show source text

    (a) Low-voltage dry-type distribution transformer shall be certified by the Manufacturer as required by the Title 20 Appliance Efficiency Regulations.

    EXCEPTION to Section 110.11(a):

    1. autotransformer;

    2. drive (isolation) transformer;

    3. grounding transformer;

    4. machine-tool (control) transformer;

    5. nonventilated transformer;

    6. rectifier transformer;

    7. regulating transformer;

    8. sealed transformer;

    9. special-impedance transformer;

    10. testing transformer;

    11. transformer with tap range of 20 percent or more;

    12. uninterruptible power supply transformer; or

    13. welding transformer.

    Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.8, and 25943, Public Resources Code.

    SECTION 110.12 MANDATORY REQUIREMENTS FOR DEMAND MANAGEMENT

    Buildings, other than healthcare facilities, that install or are required to install demand responsive controls shall comply with the applicable demand responsive control requirements of Sections 110.12(a) through 110.12(e). (a) Demand responsive controls.

    1. All demand responsive controls shall be either: A. A certified OpenADR 2.0a or OpenADR 2.0b Virtual End Node (VEN), as specified under Clause 11, Conformance, in the applicable OpenADR 2.0 Specification; or a certified Baseline Profile OpenADR 3.0 Virtual End Node; or

    B. Certified to the Energy Commission as being capable of responding to a demand response signal from a certified OpenADR 2.0b or a certified Baseline Profile OpenADR 3.0 Virtual End Node by automatically implementing the control functions requested by the Virtual End Node for the equipment it controls. 2. All demand responsive controls shall be capable of communicating with the VEN using a wired or wireless bidirectional communication protocol.

    1. Reserved.

    2. When the demand response signal is disabled or unavailable, all demand responsive controls shall continue to perform all other control functions provided by the control.

    3. Demand responsive control thermostats shall comply with Reference Joint Appendix 5 (JA5), Technical Specifications for Occupant Controlled Smart Thermostats. (b) Demand Responsive Zonal HVAC Controls. Nonresidential HVAC systems with DDC to the Zone level shall be programmed to allow centralized demand shed for noncritical zones as follows:

    4. The controls shall have a capability to remotely increase the operating cooling temperature set points by 4 degrees or more in all noncritical zones on signal from a centralized contact or software point within an Energy Management Control System (EMCS).

    5. The controls shall have a capability to remotely decrease the operating heating temperature set points by 4 degrees or more in all noncritical zones on signal from a centralized contact or software point within an EMCS.

    6. The controls shall have capabilities to remotely reset the temperatures in all noncritical zones to original operating levels on signal from a centralized contact or software point within an EMCS.

    7. The controls shall be programmed to provide an adjustable rate of change for the temperature increase, decrease, and reset.

  • § 130.1 High relevance — show source text

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    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    (c) Demand Responsive Lighting Controls. Buildings with nonresidential lighting systems having a total installed lighting power of 4,000 watts or greater that are subject to the requirements of Section 130.1(b) or 160.5(b)4B shall install controls that are capable of automatically reducing lighting power in response to a demand response signal.

    1. For compliance testing, the lighting controls shall demonstrate a 15-percent or greater reduction in lighting power as described in NA7.6.3. The controls may provide additional demand responsive functions or abilities.
    2. For buildings where demand response controls are required, demand responsive controls shall control the general lighting in the spaces required to meet Section 130.1(b) or 160.5(b)4B.
    3. General lighting shall be reduced in a manner consistent with the requirements of Section 130.1(b) or 160.5(b)4B. Exception to Section 110.12(c): Spaces where a health or life safety statute, ordinance, or regulation does not permit the general lighting to be reduced are not required to install demand responsive controls and do not count toward the 4,000-watt threshold. (d) Demand Responsive Electronic Message Center Control. Controls for electronic message centers greater than 15 kW shall be capable of reducing the lighting power by a minimum of 30 percent when receiving a demand response signal. Exception to Section 110.12(d): Electronic message centers that are not permitted by a health or life safety statute, ordinance, or regulation to be reduced. (e) Demand Responsive Controlled Receptacles. In spaces required to have controlled receptacles per Section 130.5(d) or 160.6(d) and where demand responsive lighting controls are installed, the controlled receptacles shall be capable of automatically turning off all connected loads in response to a demand response signal. Exception to Section 110.12(e): Spaces where a health or life safety statute, ordinance or regulation does not permit the receptacles to be automatically controlled.

    Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.5, 25402.8, and 25943, Public Resources Code.

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    3 NONRESIDENTIAL, HOTEL/MOTEL OCCUPANCIES,

    AND COVERED PROCESSES—MANDATORY REQUIREMENTS

    SECTION 120.0—GENERAL

    Sections 120.1 through 120.10 establish requirements for the design and installation of building envelopes, ventilation, space-conditioning and service water-heating systems and equipment in nonresidential and hotel/motel buildings as well as covered processes that are within the scope of Section 100.0(a).

    Note: The requirements of Sections 120.1 through 120.10 apply to newly constructed buildings. Section 141.0 specifies which requirements of Sections 120.1 through 120.10 also apply to additions or alterations to existing buildings.

  • § 170.2 High relevance — show source text

    xi. To qualify for the PAF for a demand responsive control in Table 170.2-L, the general lighting wattage receiving the PAF shall not be within the scope of Section 110.12(c) and a demand responsive control shall meet all of the following requirements: a. The controlled lighting shall be capable of being automatically reduced in response to a demand response signal; and b. General lighting shall be reduced in a manner consistent with the illuminance uniformity requirements of Section 160.5(b)4B. xii. To qualify for the PAFs for clerestory fenestration, horizontal slats or light shelves in Table 170.2-L, the daylighting design shall meet the requirements in Section 170.2(b). The PAFs shall only apply to lighting in a primary or secondary sidelit daylit zone where continuous dimming daylighting controls meeting the requirements of Section 160.5(b)4D are installed.

    TABLE 170.2-L—LIGHTING POWER ADJUSTMENT FACTORS (PAF) Col2 Col3
    TYPE OF CONTROL TYPE OF AREA FACTOR
    1. Daylight Continuous
    Dimming Plus OFF Control
    Luminaires in skylit daylit zone or primary sidelit daylit zone 0.10
    2. Occupant Sensing Controls
    in Office Spaces Larger Than
    250 Square Feet
    In open plan offices > 250 square feet: One sensor controlling an area that is:
    No larger than 125 square feet
    0.30
    2. Occupant Sensing Controls
    in Office Spaces Larger Than
    250 Square Feet
    In open plan offices > 250 square feet: One sensor controlling an area that is:
    From 126 to 250 square feet
    0.20
    3. Institutional Tuning Luminaires in nondaylit areas.
    Luminaires that qualify for other PAFs in this table may also qualify for this tuning PAF.
    0.10
    3. Institutional Tuning Luminaires in daylit areas.
    Luminaires that qualify for other PAFs in this table may also qualify for this tuning PAF.
    0.05
    4. Demand Responsive
    Control
    General lighting luminaires not in the scope of Section 110.12(c). Luminaires that qualify for other
    PAFs in this table may also qualify for this demand responsive control PAF.
    0.05
    5. Clerestory Fenestration Luminaires in daylit areas adjacent to the clerestory. Luminaires that qualify for daylight dimming
    plus OFF control may also qualify for this PAF.
    0.05
    6. Horizontal Slats Luminaires in daylit areas adjacent to vertical fenestration with interior or exterior horizontal slats.
    Luminaires that qualify for daylight dimming plus OFF control may also qualify for this PAF.
    0.05
    7. Light Shelves Luminaires in daylit areas adjacent to clerestory fenestration with interior or exterior light shelves.
    This PAF may be combined with the PAF for clerestory fenestration. Luminaires that qualify for
    daylight dimming plus OFF control may also qualify for this PAF.
    0.10
    a. To qualify for any of the power adjustment factors in this table, the installation shall comply with the applicable requirements in Section 170.2(e)1Aii.
    b. Only one PAF may be used for each qualifying luminaire unless combined.
    c.
  • § 170.2 High relevance — show source text

    or furniture mounted luminaires that comply with Section 170.2(e)1Aii and provide general lighting directly above the controlled area; and d. Qualifying luminaires shall be controlled by occupant sensing controls that meet all of the following requirements, as applicable: I. Infrared sensors shall be equipped by the manufacturer, or fitted in the field by the installer, with lenses or shrouds to prevent them from being triggered by movement outside of the controlled

    area.

    II. Ultrasonic sensors shall be tuned to reduce their sensitivity to prevent them from being triggered by movements outside of the controlled area. III. All other sensors shall be installed and adjusted as necessary to prevent them from being triggered by movements outside of the controlled area. e. Occupant sensing control zones, in offices greater than 250 square feet, shall be shown on the plans.

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    MULTIFAMILY BUILDINGS—PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES

    x. To qualify for the PAF for an Institutional Tuning in Table 170.2-L, the tuned lighting system shall comply with all of the following requirements: a. The lighting controls shall limit the maximum output or maximum power draw of the controlled lighting to 85 percent or less of full light output or full power draw; and b. The means of setting the limit is accessible only to authorized personnel; and c. The setting of the limit is verified by the acceptance test required by Section 160.5(e)1G; and d. The construction documents specify which lighting systems shall have their maximum light output or maximum power draw set to no greater than 85 percent of full light output or full power draw. xi. To qualify for the PAF for a demand responsive control in Table 170.2-L, the general lighting wattage receiving the PAF shall not be within the scope of Section 110.12(c) and a demand responsive control shall meet all of the following requirements: a. The controlled lighting shall be capable of being automatically reduced in response to a demand response signal; and b. General lighting shall be reduced in a manner consistent with the illuminance uniformity requirements of Section 160.5(b)4B. xii. To qualify for the PAFs for clerestory fenestration, horizontal slats or light shelves in Table 170.2-L, the daylighting design shall meet the requirements in Section 170.2(b). The PAFs shall only apply to lighting in a primary or secondary sidelit daylit zone where continuous dimming daylighting controls meeting the requirements of Section 160.5(b)4D are installed.

    TABLE 170.2-L—LIGHTING POWER ADJUSTMENT FACTORS (PAF) Col2 Col3
    TYPE OF CONTROL TYPE OF AREA FACTOR
    1. Daylight Continuous
    Dimming Plus OFF Control
    Luminaires in skylit daylit zone or primary sidelit daylit zone 0.10
    2. Occupant Sensing Controls
    in Office Spaces Larger Than
    250 Square Feet
    In open plan offices > 250 square feet: One sensor controlling an area that is:
    No larger than 125 square feet
    0.30
    2.
  • § 130.4 High relevance — show source text

    The setting of the limit is verified by the acceptance test required by Section 130.4(a)7; and iv. The construction documents specify which lighting systems shall have their maximum light output or maximum power draw set to no greater than 85 percent of full light output or full power draw. K. To qualify for the PAF for a demand responsive control in Table 140.6-A, the general lighting wattage receiving the PAF shall not be within the scope of Section 110.12(c) and a demand responsive control shall meet all of the following requirements: i. The controlled lighting shall be capable of being automatically reduced in response to a demand response signal; and ii. General lighting shall be reduced in a manner consistent with the requirements of Section 130.1(b). L. To qualify for the PAFs for clerestory fenestration, horizontal slats, or light shelves in Table 140.6-A, the daylighting design shall meet the requirements in Section 140.3(d). The PAFs shall only apply to lighting in a primary or secondary sidelit daylit zone where continuous dimming daylighting controls meeting the requirements of Section 130.1(d) are installed.

    TABLE 140.6-A—LIGHTING POWER ADJUSTMENT FACTORS (PAF) Col2 Col3
    TYPE OF CONTROL TYPE OF AREA FACTOR
    1. Daylight continuous dimming plus
    OFF control
    Luminaires in skylit daylit zone or primary sidelit daylit zone or secondary sidelit daylit zone 0.10
    2. Occupant sensing controls in offices
    larger than 250 square feet
    One sensor controlling an area that is no larger than 125 square feet 0.30
    3. Occupant sensing controls in offices
    larger than 250 square feet
    One sensor controlling an area that is 126-250 square feet 0.20
    4. Institutional tuning Luminaires in non-daylit areas:
    Luminaires that qualify for other PAFs in this table may also qualify for this tuning PAF.
    0.10
    4. Institutional tuning Luminaires in daylit areas:
    Luminaires that qualify for other PAFs in this table may also qualify for this tuning PAF.
    0.05
    5. Demand responsive control General lighting luminaires not in the scope of Section 110.12(c).
    If DR controls are required of Section 110.12(c), this PAF is not available for any lighting in the
    project. Luminaires that qualify for other PAFs in this table may also qualify for this demand
    responsive control PAF.
    0.05
    6. Clerestory fenestration Luminaires in daylit areas adjacent to the clerestory.
    Luminaires that qualify for daylight dimming plus OFF control may also qualify for this PAF.
    0.05
    7. Horizontal slats Luminaires in daylit areas adjacent to vertical fenestration with interior or exterior horizontal slats.
    Luminaires that qualify for daylight dimming plus OFF control may also qualify for this PAF.
    0.05
    8. Light shelves Luminaires in daylit areas adjacent to clerestory fenestration with interior or exterior light
    shelves. This PAF may be combined with the PAF for clerestory fenestration.
    Luminaires that qualify for daylight dimming plus OFF control may also qualify for this PAF.
    0.10
    a.
  • § 110.5 High relevance — show source text

    4, 110.5, 150.0(p)|110.4, 110.5, 150.0(p)|110.4, 110.5, 150.0(p)|110.4, 110.5, 150.0(p)| |Nonresidential
    and
    Hotels/Motels|Solar Ready Buildings|110.10|110.10|110.10|141.0(a)| |Nonresidential
    and
    Hotels/Motels|Solar PV and Battery Energy
    Storage Systems|N.A.|141.10|140.0, 140.1|N.A.|

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    ALL OCCUPANCIES—GENERAL PROVISIONS

    TABLE 100.0-A—APPLICATION OF STANDARDS—continued Col2 Col3 Col4 Col5 Col6
    OCCUPANCIES APPLICATION MANDATORY PRESCRIPTIVE PERFORMANCE ADDITIONS/
    ALTERATIONS
    Covered
    Processes1
    Envelope, Ventilation, Process Loads 110.2, 120.3, 120.6 140.9 140.1 110.2, 120.3,
    120.6, 140.9,
    141.1
    Demand
    Responsive (DR)
    Controls
    DR Control Thermostats JA5; Exception 5 to
    Section 110.10(b)1A;
    Exception 4 to
    Section 110.10(b)1B
    N.A. N.A. N.A.
    Demand
    Responsive (DR)
    Controls
    DR Zonal HVAC Controls 110.12 N.A. N.A. N.A.
    Demand
    Responsive (DR)
    Controls
    DR Lighting Controls 110.12 140.6(a)2K;
    170.2(e)2Bxi
    N.A. Table 141.0-F;
    Table 180.2-E
    Demand
    Responsive (DR)
    Controls
    DR Electronic Message Center Control 110.12, 130.3(a)3 N.A. N.A. N.A.
    Demand
    Responsive (DR)
    Controls
    DR Controlled Receptacles 110.12, 130.5(e), 160.6(e) N.A. N.A. N.A.
    Signs Indoor and Outdoor 110.9, 130.0, 130.3, 160.5(d) 140.8, 170.2(e)7 N.A. 141.0,
    141.0(b)2H,
    180.2(b)4Bvi
    Single-family General 150.0 150.1(a), (c) 150.1(a), (b) 150.2(a), (b)
    Single-family Envelope (conditioned) 110.6, 110.7, 110.8, 150(a),
    150.0(b), 150.0(c), 150.0(d),
    150.0(e), 150.0(g), 150.0(q)
    110.6, 110.7, 110.8, 150(a),
    150.0(b),
  • § 110.10 Medium relevance — show source text

    The potential solar zone area is the total area of any low-sloped roofs where the annual solar access is 70 percent or greater and any steep-sloped roofs oriented between 90 degrees and 300 degrees of true north where the annual solar access is 70 percent or greater. Solar access is the ratio of solar insolation including shade to the solar insolation without shade. Shading from obstructions located on the roof or any other part of the building shall not be included in the determination of annual solar access. Exception 5 to Section 110.10(b)1A: Single-family residences having a solar zone total area no less than 150 square feet and where all thermostats are demand responsive controls and comply with Section 110.12(a), and are capable of receiving and responding to Demand Response Signals prior to granting of an occupancy permit by the enforcing

    agency. Exception 6 to Section 110.10(b)1A: Single-family residences meeting the following conditions: A. All thermostats are demand responsive controls that comply with Section 110.12(a), and are capable of receiving and responding to Demand Response Signals prior to granting of an occupancy permit by the enforcing agency. B. Comply with one of the following measures: i. Install a dishwasher that meets or exceeds the ENERGY STAR [®] Program requirements with a refrigerator that meets or exceeds the ENERGY STAR Program requirements, a whole house fan driven by an electronically commutated motor, or an SAE J1772 Level 2 Electric Vehicle Supply Equipment (EVSE or EV charger) with a minimum of 40 amperes; or ii. Install a home automation system capable of, at a minimum, controlling the appliances and lighting of the dwelling and responding to demand response signals; or iii. Install alternative plumbing piping to permit the discharge from the clothes washer and all showers and bathtubs to be used for an irrigation system in compliance with the California Plumbing Code and any applicable local ordinances; or iv. Install a rainwater catchment system designed to comply with the California Plumbing Code and any applicable local ordinances, and that uses rainwater flowing from at least 65 percent of the available roof area.

    B. Multifamily buildings, hotel/motel occupancies and nonresidential buildings. The solar zone shall be located on the roof or overhang of the building or on the roof or overhang of another structure located within 250 feet of the building or on covered parking installed with the building project, and shall have a total area no less than 15 percent of the total roof area of the building excluding any skylight area. The solar zone requirement is applicable to the entire building, including mixed occupancy.

    Exception 1 to Section 110.10(b)1B: High-rise multifamily buildings, hotel/motel occupancies, and nonresidential buildings with a permanently installed solar electric system having a nameplate DC power rating, measured under Standard Test Conditions, of no less than one watt per square foot of roof area.

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    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    Exception 2 to Section 110.10(b)1B: High-rise multifamily buildings, hotel/motel occupancies with a permanently installed domestic solar water-heating system complying with Section 150.1(c)8Biii.

  • § 110.10 Medium relevance — show source text

    Install alternative plumbing piping to permit the discharge from the clothes washer and all showers and bathtubs to be used for an irrigation system in compliance with the California Plumbing Code and any applicable local ordinances; or iv. Install a rainwater catchment system designed to comply with the California Plumbing Code and any applicable local ordinances, and that uses rainwater flowing from at least 65 percent of the available roof area.

    B. Multifamily buildings, hotel/motel occupancies and nonresidential buildings. The solar zone shall be located on the roof or overhang of the building or on the roof or overhang of another structure located within 250 feet of the building or on covered parking installed with the building project, and shall have a total area no less than 15 percent of the total roof area of the building excluding any skylight area. The solar zone requirement is applicable to the entire building, including mixed occupancy.

    Exception 1 to Section 110.10(b)1B: High-rise multifamily buildings, hotel/motel occupancies, and nonresidential buildings with a permanently installed solar electric system having a nameplate DC power rating, measured under Standard Test Conditions, of no less than one watt per square foot of roof area.

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    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    Exception 2 to Section 110.10(b)1B: High-rise multifamily buildings, hotel/motel occupancies with a permanently installed domestic solar water-heating system complying with Section 150.1(c)8Biii.

    Exception 3 to Section 110.10(b)1B: Buildings with a designated solar zone area that is no less than 50 percent of the potential solar zone area. The potential solar zone area is the total area of any low-sloped roofs where the annual solar access is 70 percent or greater and any steep-sloped roofs oriented between 90 degrees and 300 degrees of true north where the annual solar access is 70 percent or greater. Solar access is the ratio of solar insolation including shade to the solar insolation without shade. Shading from obstructions located on the roof or any other part of the building shall not be included in the determination of annual solar access.

    Exception 4 to Section 110.10(b)1B: Low-rise and high-rise multifamily buildings with all thermostats in each dwelling unit are demand response controls that comply with Section 110.12(a), and are capable of receiving and responding to Demand Response Signals prior to granting of an occupancy permit by the enforcing agency. In addition, either A or B below:

    A. In each dwelling unit, comply with one of the following measures: i. Install a dishwasher that meets or exceeds the ENERGY STAR Program requirements with either a refrigerator that meets or exceeds the ENERGY STAR Program requirements or a whole house fan driven by an electronically commutated motor; or ii. Install a home automation system that complies with Section 110.12(a) and is capable of, at a minimum, controlling the appliances and lighting of the dwelling and responding to demand response signals; or iii. Install alternative plumbing piping to permit the discharge from the clothes washer and all showers and bathtubs to be used for an irrigation system in compliance with the California Plumbing Code and any applicable local ordinances; or iv.

  • § 110.10 Medium relevance — show source text

    Exception 3 to Section 110.10(b)1B: Buildings with a designated solar zone area that is no less than 50 percent of the potential solar zone area. The potential solar zone area is the total area of any low-sloped roofs where the annual solar access is 70 percent or greater and any steep-sloped roofs oriented between 90 degrees and 300 degrees of true north where the annual solar access is 70 percent or greater. Solar access is the ratio of solar insolation including shade to the solar insolation without shade. Shading from obstructions located on the roof or any other part of the building shall not be included in the determination of annual solar access.

    Exception 4 to Section 110.10(b)1B: Low-rise and high-rise multifamily buildings with all thermostats in each dwelling unit are demand response controls that comply with Section 110.12(a), and are capable of receiving and responding to Demand Response Signals prior to granting of an occupancy permit by the enforcing agency. In addition, either A or B below:

    A. In each dwelling unit, comply with one of the following measures: i. Install a dishwasher that meets or exceeds the ENERGY STAR Program requirements with either a refrigerator that meets or exceeds the ENERGY STAR Program requirements or a whole house fan driven by an electronically commutated motor; or ii. Install a home automation system that complies with Section 110.12(a) and is capable of, at a minimum, controlling the appliances and lighting of the dwelling and responding to demand response signals; or iii. Install alternative plumbing piping to permit the discharge from the clothes washer and all showers and bathtubs to be used for an irrigation system in compliance with the California Plumbing Code and any applicable local ordinances; or iv. Install a rainwater catchment system designed to comply with the California Plumbing Code and any applicable local ordinances, and that uses rainwater flowing from at least 65 percent of the available roof

    area.

    B. Meet the Title 24, Part 11, Section A4.106.8.2 requirements for electric vehicle charging spaces.

    Exception 5 to Section 110.10(b)1B: Buildings where the roof is designed and approved to be used for vehicular traffic or parking or for a heliport. 2. Azimuth range. All sections of the solar zone located on steep-sloped roofs shall have an azimuth range between 90 degrees and 300 degrees of true north. 3. Shading. A. No obstructions, including but not limited to, vents, chimneys, architectural features and roof mounted equipment, shall be located in the solar zone.

    B. Any obstruction, located on the roof or any other part of the building that projects above a solar zone shall be located at least twice the distance, measured in the horizontal plane, of the height difference between the highest point of the obstruction and the horizontal projection of the nearest point of the solar zone, measured in the vertical plane. Exception to Section 110.10(b)3: Any roof obstruction, located on the roof or any other part of the building, that is oriented north of all points on the solar zone. 4. Structural design loads on construction documents. For areas of the roof designated as solar zone, the structural design loads for roof dead load and roof live load shall be clearly indicated on the construction documents.

    Note: Section 110.10(b)4 does not require the inclusion of any collateral loads for future solar energy systems.

  • § 150.2 Medium relevance — show source text

    150.2(b)1, 160.1(b)3, 170.2(a)1B, 180.1(a)1B, 180.2(b)1A Athletic Field 140.7(a), 170.2(e)6A Attached Dwelling Unit 150.0(o), 160.2(a), 160.2(b), 160.2(b)2, 180.0 Attic 100.0(e)4, 110.8(d), 110.8(d)1, 120.7(a)3B, 150.0(a), 150.0(g)2, 150.0(j), 150.0(m)1B, 150.1(c)1, 150.2(a)1B, 150.2(b)1, 160.1(a), 160.1(e), 160.3(b), 160.4(f), 170.2(a)1B, 170.2(c)3B, 180.1(a)1B, 180.2(b)1-2, 180.2(c) Attic Access 150.0(a), 160.1(a) Attic Roof 160.1(a), Table 170.2-A, 180.2(b)1B Attic Ventilation 120.7(a)3, 150.2(b)1J, 160.1(a)2C, 180.2(b)1 Audio Equipment 140.6(c)2 Authorized Personnel 120.2(c), 130.1(a)1, 130.1(d), 140.6(a)2J, 160.5(b)4, 170.2(e)2B Automated Baffles 140.3(a)6, 170.2(a)3B Automatic Closing device 140.4(n), 170.2(c)4L Controls 120.2(e), 130.1(c)8, 130.5 (d)4, 140.3(a)5, 140.3(a)6, 150.1(c)3, 170.2(a)3A Dampers 150.0(m)7

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    Demand shed controls 120.2(b), 120.2(h), 120.5(a)10, 160.3(a)2, 160.3(a)2B, 160.3(d)1 Door closer 120.6(a)9 Fault detection 120.5(a)12, 120.6(i)2, 160.3(d)1L Shut off control 130.1(c)1, 130.1(c)2, 130.2(c)4, Table 141.0-F, 160.5(a)2, 160.5(b)4, Table 180.2-E Valve 140.4(k)5, 170.2(c)4I Automatically Restart 120.2(e)2, 160.3(a)2 Automatically Shutting Off 120.2(e)1, 130.1(c)1A, 130.2(c)1, 130.5(d)1, 160.3(a)2, 160.5(b)4C, 150.5(c)2A,

  • § 110.10 Medium relevance — show source text

    (d) Documentation. A copy of the construction documents or a comparable document indicating the information from Sections 110.10(b) through 110.10(c) shall be provided to the occupant.

    (e) Main electrical service panel.

    1. The main electrical service panel shall have a minimum busbar rating of 200 amps.
    2. The main electrical service panel shall have a reserved space to allow for the installation of a double pole circuit breaker for a future solar electric installation. The reserved space shall be permanently marked as “For Future Solar Electric”.

    Note: Authority: Sections 25213, 25218, 25218.5, 25402, 25402.1, and 25605, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.8, 25605, and 25943, Public Resources Code.

    SECTION 110.11—MANDATORY REQUIREMENTS FOR ELECTRICAL POWER DISTRIBUTION SYSTEM

    Certification by Manufacturers. Any electrical power distribution system equipment listed in this section may be installed only if the manufacture has certified to the Commission that the equipment complies with all the applicable requirements of this section.

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    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    (a) Low-voltage dry-type distribution transformer shall be certified by the Manufacturer as required by the Title 20 Appliance Efficiency Regulations.

    EXCEPTION to Section 110.11(a):

    1. autotransformer;

    2. drive (isolation) transformer;

    3. grounding transformer;

    4. machine-tool (control) transformer;

    5. nonventilated transformer;

    6. rectifier transformer;

    7. regulating transformer;

    8. sealed transformer;

    9. special-impedance transformer;

    10. testing transformer;

    11. transformer with tap range of 20 percent or more;

    12. uninterruptible power supply transformer; or

    13. welding transformer.

    Note: Authority: Sections 25213, 25218, 25218.5, 25402 and 25402.1, Public Resources Code. Reference: Sections 25007, 25008, 25218.5, 25310, 25402, 25402.1, 25402.4, 25402.8, and 25943, Public Resources Code.

    SECTION 110.12 MANDATORY REQUIREMENTS FOR DEMAND MANAGEMENT

    Buildings, other than healthcare facilities, that install or are required to install demand responsive controls shall comply with the applicable demand responsive control requirements of Sections 110.12(a) through 110.12(e). (a) Demand responsive controls.

    1. All demand responsive controls shall be either: A. A certified OpenADR 2.0a or OpenADR 2.0b Virtual End Node (VEN), as specified under Clause 11, Conformance, in the applicable OpenADR 2.0 Specification; or a certified Baseline Profile OpenADR 3.0 Virtual End Node; or

Frequently asked questions

Who must comply with the demand‑response rules in the Code?

Buildings (other than healthcare facilities) that install or are required to install demand‑responsive controls must meet the applicable requirements of §110.12; the section spells out specific obligations for thermostats, zonal HVAC, lighting, EMCs, and controlled receptacles .

Are DR lighting and receptacle controls tested before occupancy?

Yes. Demand‑responsive lighting and receptacle controls must be acceptance‑tested per the Reference Nonresidential Appendix (NA7.6.3 and related tests) and a Certificate of Acceptance submitted per §130.4 before an occupancy permit is issued .

Can demand‑response measures affect energy compliance credits?

Yes. Qualifying demand‑responsive lighting controls may be eligible for lighting power adjustment factors (PAFs) used in prescriptive and performance calculations (see Table 170.2‑L and related provisions) when the controls meet the listed criteria .

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