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Mainstreaming zero uli fall meeting 2012
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Mainstreaming zero uli fall meeting 2012

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Presentation on mainstreaming net zero energy for commercial buildings given at the ULI Fall Meeting 2012 in Denver, CO with Shanti Pless (NREL)

Presentation on mainstreaming net zero energy for commercial buildings given at the ULI Fall Meeting 2012 in Denver, CO with Shanti Pless (NREL)

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Mainstreaming zero uli fall meeting 2012 Mainstreaming zero uli fall meeting 2012 Presentation Transcript

  • Shanti Pless, LEED AP Tom Hootman, AIA, LEED AP BD+CNREL, Commercial Buildings Research Group RNL, Director of Sustainability
  • WHO IS PURSUINGNET ZERO ENERGY?
  • 1 1 1 1 2 1 1 16 1 1 1 1 New Buildings Institute Getting to Zero 2012 Status Update: A First Look at the Costs and Features of 2 Zero Energy Commercial Buildings (March 2012)
  • 1 1 1 1 2 1 1 16 1 1 1 1 New Buildings Institute Getting to Zero 2012 Status Update: A First Look at the Costs and Features of 2 Zero Energy Commercial Buildings (March 2012)
  • 1 1 1 1 2 1 1 16 1 1 1 1 New Buildings Institute Getting to Zero 2012 Status Update: A First Look at the Costs and Features of 2 Zero Energy Commercial Buildings (March 2012)
  • California PUC 2030 Massachusetts 2030 Federal / EISA 2030 ASHRAE Vision 2020 2030 ChallengeLiving Building Challenge
  • 13 11 19 5 1K-5K 5K-10K 10K-25K 25K-50K 8 50K-100K 4 >100KNew Buildings InstituteGetting to Zero 2012 Status Update: AFirst Look at the Costs and Features ofZero Energy Commercial Buildings(March 2012)
  • NREL – RESEARCH SUPPORT FACILITY NREL – RESEARCH SUPPORT FACILITY II SMUD – CAMPUS OPERATIONS SINGAPORE – CASE STUDY
  • DOE / NREL: ClientHaselden Construction: General ContractorRNL: Architecture, Interiors, Landscape, LightingStantec: MEP Engineering, Energy ModelingKL&A: Structural EngineeringMartin/Martin: Civil EngineeringAEC: LEED, Daylight Modeling, CommissioningNamaste Solar: Solar Consultant
  • Federal Office Building $64M Firm Fixed Price222,000 SF $57.4M Construction822 Occupants Complete June 2010
  • Project objectivesAbsolute energy targetRisk / reward / control balanceSubstantiationIncentive award fee
  • I want a green buildingDesign a LEED <rating> buildingDesign a building to use 30% lessenergy than ASHRAE 90.1-2004Design a building to use less than25,000 BTU/sqftDesign a net zero energy building
  • PREDICTIVE MODELING (Absolute energy target) VERSUSCOMPLIANCE MODELING (Percent better than ASHRAE 90.1)
  • New Buildings InstituteEnergy Performance of LEED for New Construction Buildings(March 2008)
  • Cost per Square Foot Gold Silver Other $- $100 $200 $300 $400 $500 $600 Certified Platinum Heifer International Center NVCI Cancer Research Kitsap County Admin Building The Signature Centre Great River Energy Headquarters Ft. Carson Brigade/Battalion HQ NREL Research Support Facility International Fund for Animal Welfare RSF Cost: $259/SF Omega Center Chevron Office Bremerton BEQ University of Denver Sturm College Naval Facilities Ft. Lewis Barracks and Dinning Dillard University EPA Region 8 Headquarters Fernald Visitors Center Average Cost: $334/SF Commerce City Civic Center Leo Trombatore Office ASU School of Journalism ASU College of Nursing & Health Federal Reserve Bank of Kansas City Leprino Building San Joaquin Admin Building Las Cruces Courthouse NASA Sustainability Base Applied Research & Development Aircraft RSF National Association of Realtors Oregon Sustainability Fort Bragg Forces Command HQ San Joaquin Comm. College DC Federal BuildingSource: DBIA Project Database
  • Net Zero Site Energy BuildingNet Zero Source Energy BuildingNet Zero Energy Emissions BuildingNet Zero Energy Cost Building
  • Demand-Side:Reduce site energy though low-energy buildingtechnologiesOn-Site Supply:Renewable energy within building footprintRenewable energy within siteOff-Site Supply:Renewable energy off site to generate energy on sitePurchase off-site renewable energy sources
  • Baseline Energy Use Passive Design Reduced Energy Use
  • Dramatically ReducedEfficient Systems Energy Use Renewable Energy
  • Energy driven form Conventional form 115,000 SF 65,000 SF
  • <30% >70%Window to Wall Ratio Window to Wall Ratio
  • Ambient lighting with daylight sensors for 25 fcAmbient daylight 6 watt task light 50 fc
  • Source: NREL, “Reducing Plug and Process Loads for a Large Scale, Low Energy Office Building: NREL’s Research Support Facility”
  • RSF II RSFRSF Staff Parking RSF Visitor Parking
  • New Building = 35 kBtu/SF/yearLeased Building = 133 kBtu/SF/yearAnnual Energy Savings = $275,590
  • 20 Year NPV = $4.4M or $20/SF30 Year NPV = $6.0M or $27/SF
  • Measured Versus Modeled Monthly and Cumulative EUI 4.5 36 The PV system is sized for an annual EUI of 35.1 kBtu/ft2. 4.0 32 3.5 28 PV 3.0 24 Data Center Annual EUI (kBtu/ft2) Mechanical Systems Plug Loads 2.5 20Monthly EUI (kBtu/ft2) Lighting Heating 2.0 16 Cooling Model Annual EUI RSF Annual EUI 1.5 12 1.0 8 Credit: Chad Lobato/NREL 0.5 4 0.0 0 RSF RSF RSF RSF RSF RSF RSF RSF RSF RSF RSF RSF Model PV Model PV Model PV Model PV Model PV Model PV Model PV Model PV Model PV Model PV Model PV Model PV Note: The annual EUI values are demand side values and do not include the 61 Innovation for Our Energy Future
  • October 2010 – September 2011 Lighting Power Density 0.35 0.33 0.30 0.28 0.25 Model Average October 2010 0.23 November 2010 Power Density (W/ft2) 0.20 December 2010 January 2011 0.18 February 2011 March 2011 0.15 April 2011 0.13 May 2011 June 2011 0.10 July 2011 August 2011 0.08 September 2011 0.05 0.03 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24Credit: Chad Lobato/NREL Time of Day Innovation for Our Energy Future
  • October 2010 – September 2011 Plug Load Power Density 0.65 0.60 0.55 0.50 0.45 0.40 Power Density (W/ft2) 0.35 Credit: Matthew Luckwitz/NREL 0.30 Model Average October 2010 0.25 November 2010 December 2010 0.20 January 2011 February 2011 0.15 March 2011 0.10 April 2011 May 2011 0.05 June 2011 July 2011 0.00 August 2011 0 2 4 6 8 10 12 14 16 18 20 22 24 September 2011Credit: Chad Lobato/NREL Time of Day Note: The elevators are included in the plug loads Innovation for Our Energy Future
  • WHAT ARE THEBEST PRACTICES?
  • 1 Performance-based procurement2 Predicting energy use3 Passive architecture and load reduction4 Low energy active systems5 Integrated renewable energy6 Zero energy operation
  • WHO IS PURSUINGNET ZERO ENERGY?