Statewide Codes & Standards Reach Code Program

Transcription

1 Statewide Codes & Standards Reach Code Program Statewide Energy Efficiency Collaborative December 2, 2010 Javier Mariscal, Southern California Edison Why Energy Efficiency Matters Energy efficiency measures for both electricity and natural gas can reduce greenhouse gas emissions significantly 1

2 GHG Estimate: Rules of Thumb 1 kwh 1 CO2e lb 1 kilowatt hour of electricity saved reduces about 1 pound of equivalent carbon dioxide 1 MMBtu 117 CO2e lbs 1 million British thermal units of natural gas saved reduces about 117 pounds of equivalent carbon dioxide Source: CoolCalifornia.org a partnership between CEC, CPUC, CARB, Universities, Non-Profits California Zero Net Energy Goal 2

3 Codes & Standards Program A broad range of aggressive and continually improving minimum and higher voluntary sets of energy codes and standards will be adopted to greatly accelerate the widespread deployment of zero-net energy and highly efficient buildings and equipment - California Energy Efficiency Strategic Plan Local Government Leadership Local governments have unique authority to pass ordinances ( Reach Codes ) requiring that buildings exceed minimum energy efficiency standards. This authority allows local governments to aggressively pursue California s goal of achieving zero net energy. 3

4 CEC Overview California Energy Commission (CEC) requires local governments to submit for review: The text of the proposed Reach Code ordinance. A cost effectiveness study with supporting analysis showing how the local government determined that additional energy saving measures are cost-effective. A statement that buildings covered by the ordinance shall use no more energy than permitted by the Title 24 building energy efficiency standards. Adhering to CEC application and review process is required in order for a Reach Code to be legally enforceable. Reach Code Adoption Process 1. Conduct Public Workshops on Draft Reach Code 2. First Reading of Ordinance Public Hearing 3. Submit Application to the California Energy Commission for Ordinance Approval 4. Second Reading of Ordinance Public Hearing 5. File the Approved Ordinance with the Building Standards Commission 4

5 Cost Effectiveness Study Cost Effectiveness Studies have been prepared for all California Climate Zones (CZ) using the following residential and nonresidential prototypical building types: Small Single Family House 2-story 2,025 sf Low-rise Multi-family Apts 8 dwelling units/2-story 8,442 sf Low-rise Office Building 1-story 10,580 sf Large Single Family House 2-story 4,500 sf High-rise Multi-family Apts 40 dwelling units/4-story 36,800 sf High-rise Office Building 5-story 52,900 sf Cost Effectiveness Methodology Each building is designed with a realistic set of energy measures to just meet the 2008 Title 24 standards ( compliant building ) Each compliant building is upgraded with different combinations of energy measures (e.g., Options 1, 2, 3) to reduce 2008 standards TDV energy by 15% 5

6 Cost Effectiveness Payback A simple payback analysis in years is calculated by dividing the incremental cost for exceeding the 2008 Standards by the estimated annual energy cost savings. Assumed average residential utility rates of $0.159/kWh for electricity and $0.94/therm for natural gas in current constant dollars (no inflation factor). Residential Payback Example In Climate Zone 6 (a very mild coastal climate): $ $0.88/sq.ft. for Single Family houses to exceed the Low-rise Residential Standards by 15% $ $1.30/sq.ft. for Multi-family buildings to exceed the Low-rise Residential Standards by 15% $ $1.25/sq.ft. for High-rise Residential (HRR) buildings to exceed the Nonresidential/ HRR Standards by 15% Average of all residential prototype buildings and all options analyzed: $0.87/sq.ft. Average Simple Payback of all prototypes: 30.0 years 6

7 Non-Residential Payback Example In Climate Zone 6 (a very mild coastal climate): $ $1.28/sq.ft. for 1-story Office building to exceed the Nonresidential Standards by 15% $ $2.06/sq.ft. for 5-story Office building to exceed the Nonresidential Standards by 15% Average of both office prototype buildings and all options analyzed: $1.33/sq.ft. Average Simple Payback of both prototypes: 6.5 years Ordinance Language Model template provided Performance based approach preferred: Maximize flexibility for designers and builders Customize energy measures pursuant to individual project circumstances Promote creative design solutions Encourage application of emerging technology 7

8 Public Meetings Facilitate public workshops with key stakeholders to provide city/county staff with community input Attend public hearings to answer technical questions from elected officials Join the CEC Reach Code Club As of today, 17 local jurisdictions have gone through the CEC approval process under the 2008 Title 24 standards. Per Section of the Building Energy Efficiency Standards, only those local ordinances that have been approved by the CEC are legally enforceable. 8

9 Statewide Codes & Standards Reach Code Program Questions? 9