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HomeMy WebLinkAboutORD 1124ORDINANCE NO. 1124 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF PALM DESERT, CALIFORNIA, ADOPTING LOCAL ENERGY EFFICIENCY STANDARDS FOR BUILDINGS COVERED BY THE 2005 CALIFORNIA BUILDING ENERGY EFFICIENCY STANDARDS NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF PALM DESERT, CALIFORNIA, DOES HEREBY ORDAIN AS FOLLOWS: Section 1. Chapter 24.30 be and the same is hereby added to the Code of the City of Palm Desert, California, as follows: Section 24.30.010 Title, Purpose and Intent. This Ordinance sets forth minimum energy efficiency standards within the City of Palm Desert for all new construction, including remodels, additions, alterations, condominium conversions and tenant improvements. (a) Background. All residential and nonresidential development must meet or exceed the energy requirements contained in the 2005 California Building Energy Efficiency Standards, including California Code of Regulations, Title 24, Parts 1 and 6 (the "Standards"). This Ordinance requires the application of the Standards, including but not limited to the definitions, procedures, forms, manuals and alternative calculations methods ("ACMs") associated with the Standards. In addition, this Ordinance amends the Standards as described herein. (b) Buildings Covered. The provisions of this Ordinance shall apply to all new residential construction, remodels, additions and alterations, and to all new nonresidential construction, remodels, additions, alterations and tenant improvements for which a building permit has been applied for and accepted as complete by the building department on or after the effective date of this Ordinance. Section 24.30.015 Enforcement. The Building Official for the City of Palm Desert shall be charged with enforcing the provisions of this Ordinance. Section 24.30.020 Definitions. CONDOMINIUM CONVERSION is defined in Section 25.112 of the Palm Desert Municipal Code. PRODUCTION HOME means a dwelling constructed as part of a residential development of at least five homes per project that is intended or offered for sale. PV CREDIT is the energy credit applicable to the Proposed Design for a solar PV energy system that is capable of generating electricity from sunlight and supplying it directly to the building; and is connected, through a reversible meter, to the utility grid. ORDINANCE NO. 1124 The methodology used to calculate the PV credit shall be the Clean Power Estimator at: http://www.consumerenergycenter.org/renewables/estimator/index.html using the 92260 zip code. The Annual Total TDV energy, in KBtu/sf-yr, shall be the total annual KWh of the solar PV energy system multiplied by 12,675 and divided by the total conditioned floor area of the building. The Building Official for the City of Palm Desert may specify at a later date a different calculation method for establishing PV credit and may decertify the Clean Power Estimator method. RESIDENTIAL DEVELOPMENT is to include but not be limited to attached and detached single-family dwellings, condominiums, apartments and time-share dwellings, and not including hotels and motels as defined in the 2005 California Building Energy Efficiency Standards. REVISED STANDARD DESIGN, TOTAL is the performance energy budget, in TDV KBtu/sf-yr, which this Ordinance establishes for all residential buildings to which it applies. It is defined as the Standard Design Total (TDV KBtu/sf-yr) from any state - approved alternative calculation method (ACM) multiplied times the Standard Design Adjustment Factor listed in Table A. SOLAR PV ENERGY SYSTEM means a photovoltaic solar collector or other photovoltaic solar energy device that has a primary purpose of providing for the collection and distribution of solar energy for the generation of alternating current rated peak electricity. The installation of any solar PV energy system must meet all installation criteria of the current edition of the California Electrical Code, and must include PV panels and inverters, which are listed by the California Energy Commission. STANDARD DESIGN ADJUSTMENT FACTOR is the arithmetic factor listed in Table A which, when multiplied by the standard design energy budget from a state -approved ACM, produces the Revised Standard Design Total. Table A. Building Type Standard Design Adjustment Factor Single Family Homes < 4,000 SF 0.90 Single Family Homes = or > 4,000 SF 0.85 Low -Rise Multi -family Buildings 0.90 Condominium Conversions 0.90 Additions to all the above = or > 500 SF 0.90 All other additions and all alterations 1.00 Palm Desert Energy Ordinance 1/11/07 Page 2 ORDINANCE NO. 1124 Section 24.30.030 Mandatory Requirements. All buildings covered by this Ordinance shall include the following mandatory energy measures as applicable and limited to the permitted scope of work: 1. Lighting. All common area landscape lighting shall be fluorescent or approved low voltage lighting in conformance with Palm Desert Municipal Code section 24.16.053. 2. Mechanical. In addition to meeting all the requirements of Section 144 of the 2005 Standards, all fan motors and pump motors which are single -speed, poly -phase, 1.0 nominal horsepower to 500 nominal horsepower, 2-, 4-, and 6-pole, squirrel cage induction, NEMA Design A or B, continuous rated motors must be NEMA Premium motors by the National Electrical Manufacturers Association. 3. Swimming Pools and Sgas. All Public and Private Swimming pools, spas, fountains and water features shall incorporate the following energy conservation features: (a) All pool and spa natural gas heaters shall have a minimum AFUE of 90% or higher; and, (b) All circulating pump motors and filtration pump motors with a nominal rating of 0.75 horsepower (i.e., 3/4 HP) or greater shall be two -speed or variable speed motors. The installation of all two -speed and variable speed motors shall include the installation of a controller which shall be time -based and shall be programmed to alternate the speed of the motor between low and high to make effective use of the energy savings potential of the unit's multi -speed capability. EXCEPTION: Dedicated pump motors serving only spa jets. 4. Provisions for Future Solar PV Energy Systems. A 1-inch diameter electrical conduit shall be provided for installation of future solar PV energy systems. The 1 inch diameter electrical conduit shall extend from a point on the exterior wall located under the southern roof exposure, to the exterior wall location adjacent to the main electrical service panel. At each location, the conduit shall terminate at a two gang, exterior wet location rated, electric junction box. Section 24.30.040 General Compliance Requirements. The following General Compliance Requirements shall apply to all new construction and additions which are 500 square feet or larger. . Exception: In lieu of the requirements of this section, the Building Official can accept alternative designs in conformance with, and not limited to, California Building Industry Association's Green Builder certification, U.S. Department of Energy's Energy Star certification program, U.S. Green Building Council's Leadership in Energy and Environmental Design (LEED) certification. In all cases, documentation shall be submitted and approved by the Building Official showing conformance with the minimum energy conservation requirements of this section. Palm Desert Energy Ordinance 1/11/07 Page 3 ORDINANCE NO. 1124 A. LOW-RISE RESIDENTIAL BUILDINGS (EXCEPT ADDITIONS < 500 Sq.Ft.) SINGLE FAMILY HOMES < 4,000 Sq.Ft.), MULTI -FAMILY BUILDINGS, ADDITIONS TO THESE BUILDINGS = OR > 500 Sq.Ft., AND CONDOMINIUM CONVERSIONS The performance approach must be used to meet and exceed the 2005 Standards as follows: the Proposed Design TDV KBtu/sf must be at least 10.0% less than the Standard Design TDV KBtu/sf-yr. Additions of 500 sq.ft. or greater and condominium conversions may meet this requirement by using the Existing+Addition+Alteration method to demonstrate that the Proposed Design energy use is at least 10% less than the Standard Design energy budget. SINGLE FAMILY HOMES = or > 4,000 Sq.Ft. The performance approach must be used to meet and exceed the 2005 Standards as follows: the Proposed Design TDV KBtu/sf must be at least 15.0% less than the Standard Design TDV KBtu/sf-yr. In modeling buildings to meet this requirement, Domestic Hot Water (DHW) energy use shall be included. Exception: When there is no change to a building's existing water heater(s), DHW energy use need not be included in the Existing+Addition+Alteration method. B. NONRESIDENTIAL, HIGH-RISE RESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES (EXCEPT ADDITIONS < 500 Sq.Ft.) The permit applicant must demonstrate that the general compliance requirement for the building envelope has been met for these occupancies using either the Prescriptive or -- Performance option defined below. PRESCRIPTIVE ENVELOPE APPROACH The Overall Envelope Approach in Section 143(b) of the 2005 Standards shall be used to demonstrate that the Overall Heat Gain of the proposed building is at least 10.0% less than the Overall Heat Gain of the standard building. PERFORMANCE APPROACH 1. Performance alternatives to meeting the Prescriptive Envelope requirement are to: (a) Model the building envelope only for compliance using a state -approved nonresidential ACM and demonstrate that the Proposed Design TDV KBtu/sf for the Cooling energy component must be at least 5.0% less than the Standard Design TDV KBtu/sf-yr Cooling energy component; or, (b) Model the building envelope and mechanical system for compliance and demonstrate that the Proposed Design TDV KBtu/sf for the sum of the Cooling, Fan, Pump and Heat Rejection energy components must be at least 5.0% less than the sum Palm Desert Energy Ordinance 1/11/07 Page 4 ORDINANCE NO. 1124 of the Standard Design TDV KBtu/sf-yr Cooling, Fan, Pump and Heat Rejection energy components, or, (c) Model the building envelope and lighting for compliance using a state -approved nonresidential ACM and demonstrate that the Proposed Design TDV KBtu/sf for the sum of Cooling and Lighting energy components must be at least 5.0% less than the Standard Design TDV KBtu/sf-yr sum of Cooling and Lighting energy components; or, (d) Model the building envelope, lighting and mechanical system for compliance and demonstrate that the Proposed Design TDV KBtu/sf for the sum of the Cooling, Lighting, Fan, Pump and Heat Rejection energy components must be at least 5.0% less than the sum of the Standard Design TDV KBtu/sf-yr for the sum of Cooling, Lighting, Fan, Pump and Heat Rejection energy components. 2. Additions of 500 sq.ft. or greater may use the Existing +Addition+Alteration method to demonstrate that the sum of the specified Proposed Design energy components (defined in la, 1 b, 1 c or 1 d above) are at least 5% less than the sum of the same Standard Design energy components. C. CREDIT FOR SOLAR PV ENERGY SYSTEMS 1. PV Credit may be used per definition in Section 24.30.020 to reduce the Proposed Design TDV energy. 2. If the performance approach is used to demonstrate compliance with the 2005 Standards, PV Credit may not be used to meet the Standards. However, PV Credit may be used to exceed the Standards for the purposes of meeting the General Compliance Requirements as explained in this section of the Ordinance. D. DOCUMENTATION To demonstrate that the General Compliance Requirements of this Ordinance have been met, the permit applicant may, optionally, submit supplementary forms and documentation separate from the building drawings, specifications and standard Title 24 report. Section 24.30.050 Requirements for Production Homes in Residential Developments. In addition to the requirements specified in Sections 24.30.020 through 24.30.040 of this Ordinance, production homes shall, as applicable, meet the following additional requirements: 1. At least one model home which is a part of a production homes development shall be equipped with a Solar PV Energy System with a minimum nominal output of 2.0 kW. Palm Desert Energy Ordinance 1/11/07 Page 5 ORDINANCE NO. 1124 2. A seller of production homes shall offer a solar PV energy system option to all customers that enter into negotiations to purchase a new production home and disclose the following: (a) The total installed cost of the solar PV energy system option; and, (b) The estimated cost savings associated with the solar energy system option as determined by current and projected future utility costs. 3. Energy Star Appliances Required. If provided by the developer, all the following installed appliances shall be Energy Star rated: (a) Dishwashers (b) Refrigerators (c) Clothes Washers (d) Clothes Dryers ( Shall be Natural Gas only) (e) Ceiling fans (f) Exhaust fans Section 24.30.060 Effective Date and Expiration Date. This Ordinance shall be and is hereby declared to be in full force and effect 30 days after the second reading of this Ordinance. This Ordinance shall expire on the date that the state's 2008 Building Energy Efficiency Standards take effect. Section 2. Express Findings. Pursuant to California Health and Safety Code section 17958.7, the City Council of The City of Palm Desert makes the following Express Findings that the modifications to the 2005 California Building Energy Efficiency Standards, as detailed in Section 1 of this Ordinance, are reasonably necessary due to local climatic conditions. As a result of very high summer ambient temperatures, including a Summer Design Temperature of 1120 F., average load demand and peak load demand of energy used in Palm Desert is an important factor concerning public safety and adverse economic impacts of power outages or power reductions (i.e., "brown -outs"). Utility company studies indicate that homes within The City of Palm Desert use on an average of 50% more energy and average summer peak load demands exceed 120% more energy than other similar utility customers located outside the desert climate zone. Reduction of total and peak energy use as a result of incremental energy conservation measures required by this Ordinance will have local and regional benefits in the cost-effective reduction of energy costs for the building owner, additional available system energy capacity, and a reduction in greenhouse gas emissions. Section 3. The City Clerk shall certify to the passage and adoption of this Ordinance and shall cause the same to be published once in the Desert Sun, a newspaper of general circulation printed and published in the County of Riverside and circulated within the City of Palm Desert. Palm Desert Energy Ordinance 1/11/07 Page 6 ORDINANCE NO. 1124 PASSED, APPROVED, AND ADOPTED by the City Council of the City of Palm Desert, California, at its regular meeting held this 11th day of January , 2007, by the following vote, to wit: AYES: BENSON, FERGUSON, FINERTY, SPIEGEL, and KELLY NOES: NONE ABSENT: NONE ABSTAIN: NONE RI ARD S. KELLY, MAYOR ATTEST: CHELLE . KLASSE , CITY CLERK CITY OF PALM DESERT, CALIFORNIA Palm Desert Energy Ordinance 1/11/07 Page 7