Beyond Passive House North American Passive House Conference Bruce Sullivan, Green Building Consultant

Transcription

1 Beyond Passive House 2011 North American Passive House Conference Bruce Sullivan, Green Building Consultant

2 Topics Third-party Certification Energy Labeling Energy Performance Score Net Zero ENERGY STAR Indoor airplus WaterSense Green Certifications Earth Advantage LEED for Homes

3 EAI: Areas of Expertise! Consulting! Certification Programs! Technical services! Program development, licensing, & management! Education and training! Quality Control & oversight

4 !"#$%&'%(&)&$*+,-./+/%0$.+(/)1'2#+$1+/%3.+2/'/0%41'+&'+&$#+ 31"0#/5'1+2/'/0%41'+3%'+31'$0%3$+6/($#+ 20/%$/0+$.%'+7%*+(/+8%&6+6"0&'2+$./+31"0#/+19+&$#+ 1:'+/;&#$/'3/<= %#+>/?/0#1'!!

5 Perception

6 Reality

7 Home buying decision? Cost per square foot Neighborhood Amenities Family needs Entertaining RV Storage

8 Third-party certification

9 Benefits of Certification Comprehensive Credible Up to date Quality checked Performance tested Valued in the market

10 Elements of Third-party Certification Design Assistance Green materials and techniques Energy modeling Staff training

11 Elements of Third-party Certification Building Envelope Size Insulation quantity quality Air tightness Windows and doors

12 Elements of Third-party Certification Equipment Requirements Heating equipment Water heaters Dishwashers Lighting Fresh air ventilation

13 Elements of Third-party Certification Mechanical Systems Proper sizing Duct sealing and testing Ducts inside Zonal pressure relief Combustion zone testing

14 Performance Testing

15 Earth Advantage Certification Tiers Silver Gold Platinum Targeted at mainstream Builder friendly Simple checklist/points system Modest cost

16 Earth Advantage 2008 Points Worksheet

17 Earth Advantage 2008 Points Worksheet Tiers Silver 90 Gold 120 Platinum 140

18 Online Platform

19 Certification Programs

20 What s a simple fella to do?

21 Efficiency vs. Consumption MPG or Gallons?

22 Why energy labeling? Guides performance Guides behavior Drives market Promotes improvements Enables comparison

23 National labeling efforts! HERS Index! EnergySmart Home Scale! Energy Performance Score (EPS)! HES-Pro! Home Energy Score (US DOE)

24 Energy Labeling Two elements Modeling engine Communication/ Management Tool

25 HERS index! HERS index a recognized index of efficiency! Used in EEM and EIM products! Modeling tool used by RESNET raters! HERS index on scale indicates energy efficiency relative to HERS reference home! HERS index does not factor house size! HERS index works well for new homes to calculate delta! Non-comparable between homes! Does not offer sense of magnitude of energy use

26 Consumption vs Index Both homes have an EE Index HERS score of 70 EPS (consumption) Score of 62 EPS (consumption) Score of 178

27 Index vs. actual consumption! Asset label should indicate energy consumption! Asset label to account for house size! Asset label should allow home-to-home comparison! Asset label could highlight carbon measure

28 Desirable outcomes of energy labeling! Asset label to address new and existing homes! Offer mechanism to assess increased appraised value! M&V builders and contractors; validates retrofit! Empower Realtors with sales proposition! Scale incentives to labeled performance! Link housing stock to carbon footprint & GHG reduction goals! Offer transparent tracking for Program Administrators of the energy and carbon improvements

29 MPG for new & existing homes Energy Performance Score (EPS) Asset rating: The needed MPG for homes Absolute annual site energy consumption Associated annual carbon emissions

30 Energy Performance Score Why was the EPS developed? Needed to provide clarity to certification claims Needed to allow home-to-home comparison Needed to quantify energy consumption Needed something builders could brag about Needed to educate homebuyers about a home s energy use and associated carbon emitted

31 The Energy Performance Score

32 Where EPS is used Oregon Washington Massachusetts Virginia

33 Free market adoption We use EPS information as a marketing tool to help sell our homes. The EPS is an amazingly innovative tool that will help us transform the Seattle real estate market. -- Aaron Fairchild, president of G2B Ventures, Seattle-based real estate investment firm.

34 Multiple Listings

35 The EPS Program Infrastructure A Holistic Modular Approach State of Washington pilots Community PowerWorks (financing) BPI QA Audit & Energy Labeling Auditor Training Realtor & Appraiser Education Web Portal Competitive contractor bids

36 The EPS Ecosystem Utility Increasing jobs, scaling the market Insurer Incentives, rewards Lender preferred premium EPS listing, just like property taxes Preferred mortgage rate More info to help sell Home builder Reflect high building performance Before and after QC Workforce training, bigger pie More EE comp data for higher evaluation Real Estate Broker Appraiser QC Auditor Energy Auditor/Contractor

37 EPS Web Portal City/Utility/Program Manager Home owner Lenders Before and after QC BPI-certified Energy Auditor EE/CO2 Data Audit coordination, EPS score, recommendation report Database Competitive bid Competitive bid Utility Competitive bid Incentives, rewards Competitive bids Remodeler/ Energy Contractors

38 EPS architecture! Cloud-based database with embedded EPS SIMPLE algorithm! Wireless data entry in the field.! ARRA reporting

39 Auditor Interface: Audit Preview Screen

40 EPS architecture Web Information Portal! Trust: consumer ratings of contractors! Simplicity: finance approval & contractor bid review and scheduling! Accountability: Post-job EPS audit validates increased performance

41 Passive House and EPS Final Energy Primary Energy Emissions CO 2 -Equivalent CHOOSE UNITS: kwh/(ft 2 yr) kwh/(ft2yr) lb/(ft 2 yr) Heating, Cooling, DHW, Auxiliary and Household Electricity Total Primary Energy Use Intensity 3.5 kwh/(ft2yr) kwh/(ft2yr) kwh/(ft2yr) lb/(ft 2 yr) Total Emissions, CO 2 -Equivalent 1.9 lb/(ft"yr) (Yes/No) Primary Energy Requirement 11.1 kwh/(ft2yr) Yes Final Energy X Treated Floor Area = EPS

42 Operational vs. Embodied Energy "#$%&!'&$()*! +$,&-!./&!$)0!'&$()*! 12*3,/!$)0!456*!57$0/! 8$,&-2$5/!97-2*2)$5!$)0! -&#5$%&:&),;! 8$,&-2$5!<-$)/#7-,$(7)!! =7)/,-6%(7)! 8$2),&)$)%&! >&:752(7)! A Life Cycle Assessment Based Approach to Prioritizing Methods of Preventing Waste from Residential Building Construction, Remodeling, and Demolition in the State of Oregon, Oregon Department of Environmental Quality, 2009

43 Net-Zero A building that produces as much energy as it consumes over the course of one year. Typical Oregon home = 100,000 btu/year 29,300 kwh/year

44 Average House 29,000 kwh/year = 24Kw PV system

45 The Energy Pyramid Renewables - Solar hot water - Photovoltaic panels - Wind machines Equipment - High efficiency - Ducts inside - Ductless heat pump Windows - Triple pane - Low-e - Gas fill Building Shell - Insulation - Air sealing Source: Earth Advantage

46 Plug Loads Dominate Heating 19% Plug 63% Water Heat 13% Cooling 5%

47 Energy Savings Example Btus Marine High Desert Wall from R30 to R40 100, , square foot house Floor R38 to R44 300, ,000 Window U-0.28 to U , ,000 HSPF 9.5 to , ,000 ACH 2.5 to , ,000 1 kw PV 3.7 mmbtu 4.8 mmbtu

48 Cost per Million Btus Marine High Desert Solar water heater $513 $366 Photovoltaic $450 $330

49 Optimize Efficiency and Generation Parker, D., " Very Low Energy Homes in the United States: Perspectives on Performance from Measured Data", Prepared for the National Academy of Sciences and submitted to Energy & Buildings, August 2008.

50 Energy Monitoring! EcoVentures NW

51 Earth Advantage Zero Energy Building certification: ENERGY STAR, Earth Advantage or equivalent Projected EPS equals 0 Performance testing: Blower door Ventilation balancing Equipment commissioning Energy-use monitoring

52 Thank you! Bruce Sullivan,