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HomeMy WebLinkAboutOrd 1124 Energy Conservation Requirements 8/24/2006TO: CITY OF PALM DESERT CITY MANAGERS OFFICE STAFF REPORT Honorable Mayor and City Council Members SUBJECT: ENERGY CONSERVATION REQUIREMENTS FOR NEW CONSTRUCTION SUBMITTED BY: Patrick Conlon, Director of Office of Energy Management DATE: August 24, 2006 ATTACHMENTS: 1) Ordinance No. 1124IN8 p' ffi CONTINUED TO ` �i� - 6(1' ❑ PASSED TO 2ND READ1NR RECOMMENDATION By Minute Motion: Pass Ordinance No. 1124 to second reading at a future date, which will occur after the review and approval by the California Energy Commission. EXECUTIVE SUMMARY This proposed Energy Conservation Ordinance affects all new residential and commercial buildings in the City of Palm Desert. This ordinance will result in an energy savings of at least 10% above the minimum State standards, with large homes (over 4,000 square feet) attaining energy savings of at least 15%. The cost to developers for implementing these requirements range from approximately $2,200 to $4,200 per home, depending on design and the options selected by the designer. The exception to this cost would be on model homes where a small 2kW photovoltaic (PV) solar system is mandatory for each model. The cost for this photovoltaic (PV) system would be approximately $8,000 to $9,000 per model, after California and Federal rebates. As required by State law, this ordinance will appear before the California Energy Commission for review and approval in July and August. Staff will bring this ordinance back to the City Council for the second reading after this process is completed. DISCUSSION The intent behind this proposed ordinance is to get all new construction in compliance with Palm Desert's stated energy conservation goals of 30% reduction citywide, adjusted for growth, and 30% reduction of our on -peak demand loads within 5 years. To measure our achievement, the base year for our citywide energy usage was established G:1CityMgrlJane StanleylWord FilealPat ConlonlReporta & MemoslEnergyConservatlonRequirements8-24-06.doc Page I of 3 Staff Report Energy Conservation Requirements for New Construction August 24, 2006 Page 2 of 3 in 2005. Effective November of 2005, the State of California adopted more stringent energy conservation standards for new construction. These new State energy standards increased efficiency requirements by 12% to 15% in all new construction. This proposed ordinance before you tonight will raise that standard by an additional 10% to 15% above the new 2005 California Energy Standards, thus meeting the City's energy goals. It is designed to be flexible in allowing the designer to choose two paths to compliance: prescriptive or performance, with the exception of the mandatory requirements set forth in Section 24.30.030. The prescriptive approach to documenting compliance with this ordinance is shown in Section 24.30.040 and applies to commercial and hotel/motel occupancies. This prescriptive requirement gives energy conservation goals in 3 areas: the building envelope, the lighting system, and the mechanical system. If the designer so chooses (i.e. optional), they can follow the performance approach to showing compliance with this ordinance. The performance approach is applicable to all occupancies, mandatory on residential, and optional to commercial hotel/motel occupancies. The performance approach is based on the allowed Energy Budget for the particular building. This budget is expressed in now many BTU's (British Thermal Units) per square foot a building may consume over a period of a year, expressed as KBtu/sq.ft. This ordinance requires all buildings to consume 10% less energy than allowed by State law (i.e. a 10% savings in energy). Homes over 4,000 square feet are required to consume 15% less energy than what is allowed by State law. Why are large homes treated differently? Large homes are allowed by the 2005 California Energy Standards to use more energy than smaller homes. The State allows a higher Energy Budget in cases equivalent to several smaller homes. On other than sales models where a small 2,000-watt photovoltaic system is required, this ordinance does not require solar photovoltaic (PV) systems. What this ordinance does is allow the designer to calculate the energy savings of a photovoltaic system and apply that savings to the Energy Budget of the building. It is the designer's option to utilize a solar photovoltaic system to achieve compliance with this ordinance. Many other avenues other than PV solar are available to obtain this 10% or 15% energy savings. Additional insulation in the walls and ceilings, high performance windows and glass doors, high efficiency air conditioning and heating systems, are but a few. The effective date shown in Section 24.30.070 for this ordinance is approximate. It is unknown exactly when the California Energy Commission (CEC) will review and approve this ordinance for local adoption. The day that happens, staff will schedule the second reading of this ordinance for the next City Council meeting. The effective date of G.lCityMgrUane Stanley1Word FrleslPat CoManlRaparts & Memos%EnergyConservehonRequiements8-24-06.dac Staff Report Energy Conservation Requirements for New Construction August 24, 2006 Page 3 of 3 this ordinance will be, as customary, 30 days after the second reading. It is the recommendation of the City Attorney that, after the CEC actions, we bring to the Council a second identical ordinance which will be adopted on an urgency basis and thus will be effective immediately. The California Energy Commission requires that this local ordinance have an expiration date, which is the same date that the new 2008 California Energy Standards become effective statewide, tentatively scheduled for November 2008. At that time, staff will review the new 2008 State Standards and bring back to the City Council via the Energy Commission a new Palm Desert Ordinance with new energy efficiency goals more stringent than the proposed 2008 minimum energy standards established by the State. If you have any questions, please contact Pat Conlon. Submitted by: Approved by: C rt%1 LIMA-� POtrick Conlon Director of Office of Energy Management Carlos rtega City Manager G:1CityMprtJane Stenley\Wcrd FilesVPat Conlon%Ropor s & MemoslEnerpyConservebonRequirements&24-O6.dcc ORDINANCE 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 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"). The ordinance codified in this chapter 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. 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. 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. 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 ORDINANCE NO. 1124 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. 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. For buildings permitted before January 15, 2007: The methodology used to calculate the PV credit shall be the Clean Power Estimator at http://www.clean- power.com/cec/defauIt.asp for 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 3413 multiplied by 4.22 and divided by the total conditioned floor area of the building. For buildings permitted on or after January 15, 2007: The amount of PV credit is defined as the annual total TDV KBtu/sf-yr of the solar PV energy system as calculated in accordance with the implementation rules and methodology of the California New Solar Homes Partnership as posted on the Internet web site http://www.newsolarhomes.ca.gov/; multiplied by 1000 and divided by the total conditioned floor area of the building. Note: this method of calculating PV credit may be used whenever it is available on a publicly accessible Internet web site. REVISED STANDARD DESIGN TOTAL is the performance energy budget, in TDV KBtu/sf-yr, which this ordinance establishes for all 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. 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: All Nonresidential, High -Rise Residential and Hotel/Motel Buildings All Low -Rise Multi -family Buildings All Single Family Homes < or = 4,000 SF All Single Family Homes > 4,000 SF Standard Design Adjustment Factor 0.90 0.90 0.90 0.85 7125106 Draft of Palm Desert Energy Efficiency Standards 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. Lightinq. Lighting in all laundry rooms, utility rooms, mechanical rooms, closets and garages shall be fluorescent and controlled by a Manual -ON, Automatic -OFF occupancy sensor. All landscape lighting shall be fluorescent or approved low voltage lighting in conformance with Palm Desert Municipal Code section 24.16.053. 2. Swimminq Pools, Spas, Fountains and Water Features. 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/ 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. 3. Provisions for Future Solar PV Energv Svstems. 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. PRESCRIPTIVE APPROACH NONRESIDENTIAL, HIGH-RISE RESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES (EXCEPT ADDITIONS < 500 SQ.FT.) The following additional requirements apply using the Prescriptive Approach to meet the 2005 Standards. 1. ENVELOPE. The Overall Envelope Approach in Section 143(b) of the 2005 Standards shall be used to demonstrate that the overall heat loss of the proposed building is at least 10.00% less than the overall heat loss of the 7125106 Draft of Palm Desert Energy Efficiency Standards Page 3 ORDINANCE NO. 1124 standard building; and that the overall heat gain of the proposed building is at least 10.00% less than the overall heat gain of the standard building. 2. INDOOR LIGHTING. The calculations of actual and allowed indoor lighting power density (LPD) in Section 145(a) and (b) of the 2005 Standards shall be used to demonstrate that the Actual LPD is at least 10.00% less than the Allowed LPD. Exception: Display lighting installed wattage is exempt from the calculation which demonstrates compliance with this requirement. 3. 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, polyphase, 1 to 500 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. PERFORMANCE APPROACH If the performance approach is used to demonstrate compliance with the 2005 Standards, PV Credit may not be used for the building to meet the Standards. However, PV Credit may be used to exceed the Standards by the requisite percentage defined below. NONRESIDENTIAL, HIGH-RISE RESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES (EXCEPT ADDITIONS < 500 SQ.FTA PERFORMANCE APPROACH If a building utilizes the performance approach, the Proposed Design TDV KBtu/sf must be at least 10.0% less than the Standard Design TDV KBtu/sf-yr. Additions of 500 square feet or larger may meet this requirement by using the Existing + Addition + Alteration approach to exceed the Standard Design by the specified percent. When determining the percent by which the Proposed Design energy performance exceeds the Standard Design, Process and Receptacle energv use are included in the ACM simulation but are excluded in calculating the "% Better Than Standard" if liahtinq compliance is not a part of the performance analysis, the Liqhts energv use is also excluded in calculatinq the "% Better Than Standard" If domestic (service) hot water is not a part of the performance ana/vsis, the Domestic Hot Water enerqv use is excluded in calculatinq the " o Better Than Standard". LOW-RISE RESIDENTIAL BUILDINGS (EXCEPT ADDITIONS LESS THAN 500 SQ.FT. AND SINGLE FAMILY HOMES > 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 10.0% less than the Standard Design TDV KBtu/sf-yr. Additions of 500 square feet or larger may meet this requirement by using the Existing + Addition + Alteration approach to exceed the Standard Design by the specified percent. 7125106 Draft of Palm Desert Energy Efficiency Standards Page 4 ORDINANCE NO. 1124 SINGLE FAMILY HOMES > 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. Section 24.30.060 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. Model homes as part of a production homes development shall be equipped with a Solar PV Energy System with a minimum nominal output of 2.0 kW. 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. Energv 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 (Natural Gas only) (e) Ceiling fans (f) Exhaust fans Section 24.30.070 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 2008 Building Energy Efficiency Standards take effect. Section 2. 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. 7125106 Draft of Palm Desert Energy Efficiency Standards Page 5 ORDINANCE NO. 1124 PASSED, APPROVED, AND ADOPTED by the City Council of the City of Palm Desert, California, at its regular meeting held this day of by the following vote, to wit: AYES: NOES: ABSENT: ABSTAIN: JIM FERGUSON, MAYOR ATTEST: RACHELLE D. KLASSEN, CITY CLERK CITY OF PALM DESERT, CALIFORNIA 7125106 Draft of Palm Desert Energy Efficiency Standards Page 6 ORDINANCE NO. 1124 Appendix: City of Palm Desert Compliance Forms 7125106 Draft of Palm Desert Energy Efficiency Standards Page 7 ORDINANCE NO. 1124 City of Palm Desert Low -Rise Residential Energy Compliance Form 7/26/06 This form must be submitted for energy plan review, along with the normal Title 24 report, for all new low-rise residential construction and residential additions equal to or greater than 500 sq.ft. Project Name & Address: Date of Title 24 Report: 1. Calculation of Revised Standard Design energy budget: Standard Design TDV Adjustment Revised Standard Design Energy (KB tu/sf--yr)* Factor TDV Energy (KBtu/sf--yr)* x !from Part 1 of 4, CF-I RJ [from Table A] 2. Calculation of PV Credit in the Proposed Design: [This calculation is used only if there is a solar PV energy system receiving credit.] Total Annual TDV Total Conditioned Proposed Design TDV Energy (KBtu/sf--yr) Floor Area (sq.ft.) PV Credit (KBtu/sf--yr) [from NSHP web site"] (from Part 1 of 4, CF-1RJ 3. Verification of compliance with City of Palm Desert energy ordinance: Proposed Design TDV Proposed Design Revised Standard Design Energy (KB tu/sf--yr)* PV Credit (KBtu/sf-yr) TDV Energy (KB tu/sf-yr)* [from Part 1 of 4, CF-1R] [from #21 ) <or= [from #1] Note: The Proposed Design (TDV KBtu/sf-vr) must always be equal to or less than the Standard Design Total (TDV KBtu/sf-vr) in the Title 24 CF-1 form. Part 1 of 4. Table A. Standard Design Building Type: Adjustment Factor All Single Family Homes < or = 4,000 SF 0.90 All Single Family Homes > 4,000 SF 0.85 All Low -Rise Multi -family Buildings 0.90 "* Go to www.newsolarhomes.ca.aov to determine the performance of the solar PV energy system using the methodology approved by the New Solar Homes Partnership (NSHP. ORDINANCE NO. 1124 Citv of Palm Desert Nonresidential Enerqv Compliance Form 7/26106 This form must be submitted for energy plan review, along with the normal Title 24 report, for all new nonresidential, high-rise residential and hotel/motel construction, and additions which are equal to or greater than 500 sq.ft. to these occupancies. Project Name $ Address: Date of Title 24 Report: 1. Calculation of Revised Standard Design energy budget. Standard Design Adjustment Revised Standard Design Total (KBtu/sf--yr) * Factor Total (KBtu/sf--yr) * x 0.90 = [from Part 2 of 3, PERF-1] 2. Calculation of PV Credit in the Proposed Design: [This calculation is used only if there is a solar PV energy system receiving credit.] Annual TDV Energy Total Conditioned Proposed Design Use (KBtu/sf--yr) Floor Area (sq.ft.) PV Credit (KBtulsf-yr) [from NSHP web site"] [from Part 1 of 3, PERF-11 3. Verification of compliance with City of Palm Desert energy ordinance: Proposed Design Proposed Design Revised Standard Design Total (KBtu/sf--yr) * Credit (KBtulsf--yr) Total (KBtu/sf--yr) * ) <or= [from Part 2 of 3,PERF-1] [from #21 [from #1] Note: The Proposed Desiqn (TDV KBtu/sf-vr) must always be equal to or less than the Standard Desiqn Total (TDV KBtu/sf-vr) in the Title 24 CF-1 form, Part 1 of 4. * In calculating the Standard Design Total and the Proposed Design Total, exclude Process and Receptacle energy components listed on the PERF-1, Part 2. If lighting compliance is not a part of the performance analysis, exclude the Lights energy component; if domestic (service) hot water is not a part of the performance analysis, exclude the Domestic Hot Water energy component. '* Go to www.newsolarhomes.ca.4ov to determine the performance of the solar PV energy system using the methodology approved by the New Solar Homes Partnership (NSHP.