California Efficiency Standards: Progression to Zero Net Energy Buildings. Martha Brook California Energy Commission

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1 California Efficiency Standards: Progression to Zero Net Energy Buildings Martha Brook California Energy Commission

2 Efficiency Standards: Progression to ZNE California Energy Policy Energy Efficiency, Green Buildings, Climate Change Building Greenhouse Gas Emission Levels Current GHG Reduction Goals Future of Energy Efficiency Standards Progression to Zero Net Energy Advanced Standards Role of Commissioning

3 California Energy Policy: Building & Appliance Efficiency Standards 14,000 Per Capita Electricity Sales (not including self-generation) (kwh/person) (2006 to 2008 are forecast data) 12,000 10,000 United States 2005 Differences = 5,300kWh/yr = $165/capita 8,000 6,000 California 4,000 2,000 0 Per Capita Income in Constant 2000 $ % change US GDP/capita 16,241 31,442 94% Cal GSP/capita 18,760 33,536 79%

4 California Energy Policy: Green Building Executive Order Demonstrate state leadership by adopting best practices for energy efficiency & sustainable building design Established by Governor Schwarzenegger in 2004 Make the state building portfolio 20% more energy efficient by 2015 All new state buildings to achieve LEED Silver Benchmark state buildings by 2008

5 California Energy Policy: Global Warming Solutions Act California Greenhouse Gas Emission Trend 115 Mtonnes CO2e Mtonne CO2e

6 California Energy Policy: Big & Bold Energy Efficiency Initiatives 2007 effort led by the CPUC to define aggressive energy efficiency goals in response to climate change Collaborative development of initiatives with CEC, CA utilities, Building Industry, EE organizations BBEE Initiatives included in CPUC Goals Update & IOU EE Strategic Plan

7 California Energy Policy: Big & Bold Energy Efficiency Initiatives Residential New Construction Zero Net Energy by 2020 Commercial New Construction Zero Net Energy by 2030 Residential & Small Commercial HVAC Installed Performance Climate Optimized Equipment

8 California Energy Policy: California Green Building Standards In 2007, Governor directed the CA Building Standards Commission (CBSC) to include green building standards (GBS) in state building code CBSC will adopt first version of GBS in 2009 California Building Code Title 24, Part 11

9 California Energy Policy: California Green Building Standards Commercial GBS 100% voluntary Leverages LEED and ASHRAE Std.189P Energy Efficiency Tiers: 15% & 30% beyond Title 24, Part 6 Residential GBS mandatory & voluntary Mandatory: water efficiency, construction materials & waste Voluntary: EE Tiers: 15% & 35% beyond Title 24, Part 6

10 GHG Inventory for California California GHG Emissions 546 Mtonne CO2e (2004) Agriculture 6% Other 3% Industrial 25% Transportation 42% Buildings 24%

11 GHG Inventory for California Building Greenhouse Gas Emissions from the CARB GHG Emissions Inventory future estimates based on CEC Electricity Demand Forecast 55 Mtonne CO2e Million Metric Tonnes CO2e

12 CA Building Energy Efficiency Standards Emissions forecast includes average level of future Standards improvements Need to accelerate Standards to change slope of forecast Progress to ZNE will require a new paradigm for Standards development & compliance Progress to ZNE will require more & better collaboration with PIER, CPUC & CA utilities

13 Efficiency Standards: Progress to ZNE Quicker migration from R&D and IOU emerging technology programs to Standards Redefining Standards cost effectiveness criteria Use of scenario analyses to understand impacts & gauge uncertainty e.g. fuel costs, technology costs, demographics, market acceptance, field performance, climate change Expansion of scope for both Appliance & Building Efficiency Standards

14 Reach Standard for Title 24 Voluntary Standard for additional energy efficiency & on-site renewable energy generation written in code language Similar approach as mandatory Title 24 Mandatory & prescriptive measures Energy performance budgets based on building type and climate zone Will require more Commissioning More field testing for equipment acceptance Design phase commissioning Commissioning for Renewable Energy Systems & Demand Response Should include measures that support Commissioning Benchmarking Performance Monitoring Systems

15 Reach Standard for Title 24 Advanced Standard will become: New Construction targets for CA utility incentive programs Future versions of Energy Chapter in Green Building Standard Energy basis of green building codes adopted by local agencies Advanced Standard will provide: List of measures that need field performance, market acceptance studies by PIER, IOU Emerging Technology & CASE programs List of measures for migration to mandatory Standards

16 Progress to ZNE Making Standards Stick As Standards advance, Commissioning will play a bigger role Measures with poor compliance or poor installed performance need more commissioning New technologies will need innovative commissioning (e.g. natural ventilation) How do we commission performance Standards? Design benchmarks vs. field performance

17 Progress to ZNE & Existing Buildings ZNE Standards will be influenced from what works in existing buildings Case studies of field performance and market acceptance occur in existing bldgs. ZNE ZNE Standards will impact EE in existing buildings Standards tends to mainstream technologies, which lowers costs for retrofits Utilities look to technologies in Standards for measures to incent in existing bldgs. Existing Buildings

18 "Life is either a daring adventure or nothing. To keep our faces toward change and behave like free spirits in the presence of fate is strength undefeatable. Helen Keller mbrook@energy.state.ca.us