Green Building Performance in Australia


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Keynote presentation to ARBS conference in Melbourne on 7 May 2012. Topic dealt with actual performance data in green buildings with a focus on Australian building performance.

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  • TL: Clarify: Growth is still annual 50% rate in 2009
  • Green Building Performance in Australia

    1. 1. If It Doesn’t Perform,It Can’t Be Green!Jerry YudelsonYudelson Associates
    2. 2. Take-AwaysGreen buildings are important for controllingCO2 emissionsMany buildings do not perform as predictedor as neededWithout reporting actual performance, the entireexercise will be wastedEnergy use metrics are well known
    3. 3. 8 Testable Propositions• Green building vital in the global carbon picture• Green building growing rapidly in all sectors• Green building business case is proven• BUT, many green buildings not performing as predicted• Building energy performance reports all vitally needed• Buildings must measure total carbon performance• Zero-net-energy buildings feasible today• Beyond energy, water is the next big issue
    4. 4. Green Building Important for Carbon Reduction
    5. 5. Green Buildings Make Money Sense
    6. 6. Business Case for Green is Proven Financial/economic return Risk mitigation Marketing/public relations Productivity/health gains Recruitment/retention Sustainability concernsASU Biodesign Institute B LEED
    7. 7. Potential Impact of Rapid Greening• 14% reduction in CO2, 2025 vs. 2005• NPV of green building: $650 billion in U.S. – 5x to 10x cost premium• 2020 Prediction: – Green buildings 95% of new construction – Green retrofits are 75% of all retrofits
    8. 8. Green Building Growing Rapidly
    9. 9. Green Building Statistics 30,000+ LEED registered projects (Dec. 2011) 130 countries use LEED 12,000+ LEED certified projects (March 2012) 175,000+ LEED Accredited Professionals OREGONHEALTH & SCIENCE “In God We Trust; UNIVERSITY All Others Must Bring Data.” -W. Edwards Deming
    10. 10. Building Energy = Carbon Solution Reducing energy use in buildings is the only Life Cycle Cost-positive carbon mitigation solution 25% of total carbon solution can come from buildings Key issue today isChoosing Green finance, not economicsChoosing Green
    11. 11. Energy Performance Reports Needed
    12. 12. Performance Reporting Informs• “What gets measured, gets managed”• If building energy use is this important to our collective future, why not know what’s going on?• Without reports, we are flying blind/can’t fix• Why should governments put their faith in green building without performance reports?
    13. 13. New Green Buildings Under-Performing
    14. 14. Energy Savings in LEED Buildings
    15. 15. What’s the Issue?• Average savings is 35% vs. standard (Kats)• BUT, about 25% actually underperform• One LEED Platinum building: – Modeled at 61% savings – Performs at 48% savings• Underperforming buildings hurt validity of green building premise
    16. 16. Buildings Must Measure Carbon
    17. 17. Total Carbon Emissions Count • Total carbon emissions should be the only energy points in green rating schemes; this means: – 80% reductions with new buildings – 40% in older buildings • Relative improvement (%) needs to be retired • Real performance assessment – Buildings will be de-rated
    18. 18. Europe: Measure Total Carbon Emissions
    19. 19. ZerO-Net-Energy Buildings Feasible
    20. 20. Lessons from Lean Manufacturing• Lean Themes – Boeing 767: $130 million ea. • Each plane performs identically • Compare with two 350,000-SF buildings – Reduce energy & water use/carbon footprint – Eliminate waste – Build in resiliency – Need to make champagne on a beer budget! • =>Process changes – Key issue: get green cost premium down to zero, using integrated design process
    21. 21. How Much Energy Should Buildings Use? • European stretch goal: 100-150 kWh/sqm/a PRIMARY energy use • U.S. Average: 400 kWh/m2/a (2003) – 50% better than average still not good enough! – 60% to 90% required – 2030 Challenge
    22. 22. Where Do We Need to Get?
    23. 23. Research: World’s Greenest Buildings•LEED Platinum (or 6-StarGreen Star equivalent)•Built since 2003•>50,000 sq.ft. (5,000 sqm)•Non-residential•Must provide energy data forone year•Water data, as available
    24. 24. 2 Victoria Avenue, Perth 6-Star Green Star – Office As Built •Graywater treatment •Active chilled beams • Floor-by-floor air handling system •Annual operating costs savings: $85,000 • 5 Star NABERS62 kwh/sqm/annum
    25. 25. The Gauge, Melbourne 6-Star Green Star – Office As Built • Blackwater treatment system recycles 96% of wastewater • Gas-fired cogen plant supplies 25% of energy use • Individual control of thermal comfort at 90% of stations • 5 Star NABERS193 kwh/sqm/annum
    26. 26. Council House 2, Melbourne6-Star Green Star – Office As Built & Design •Thermal cooling, night purge, 5 “shower towers” •100% fresh air •Solar thermal •PV system @ 3.5-kWh/day •Green roof •Gas cogeneration system •Sewer mining 190 kwh/sqm/annum
    27. 27. Workplace 6, Sydney 6-Star Green Star – Office As Built •Blackwater treatment + sewer mining capacity • Tri-generation plant • Harbor water heat rejection •Solar thermal111 kwh/sqm/annum
    28. 28. One Shelley Street, Sydney 6-Star Green Star – Office Design •Activity Based Working (ABW) design = 20% less space, 35% less paper •“Diagrid” structure = Flexible interior, 80% daylighting •Harbor water heat rejection •Chilled beams •100% fresh air116 kwh/sqm/annum
    29. 29. Pixel, Melbourne 6-Star Green Star – Office Design • Perfect Green Star Score: 100 + 5 innovation points • Highest LEED score: 102 of 110 available points • BREEAM Outstanding • 3 @1.5-kW wind turbines & 6.5-kW PV • Net-zero water use,32 kwh/sqm/annum vacuum toilets
    30. 30. One Bligh, Sydney 6-Star Green Star - Office As Built• •Blackwater recycling plant for cooling tower makeup •65,000-liter rainwater tank •Double-skin glass façade •Tri-generation system: heating, cooling, electricity generation (vacuum-tube solar collectors) 106 kwh/sqm/annum
    31. 31. Asia/Pacific Buildings6-Star Green Star Equivalent
    32. 32. The Future is Green, But… If you want to score, run to where the ball is headed, not to where it is. Ask yourself and your clients: how green will the built environment be in 2015 to 2020? Non-performing green companies will pay a penalty in that market!
    33. 33. Take-AwaysGreen building is important for controllingCO2 emissionsMany buildings are not performing aspredicted or as neededWithout reporting performance, the entireexercise will be wastedEnergy use metrics are well known
    34. 34. If It Doesn’t Perform, It Can’t Be Green! Jerry Yudelson Yudelson Associates