Energy Efficient Buildings

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• Energy Efficient Buildings
• Buildings consume more energy and emit more GHGs
  than other sectors
• The link between buildings and transportation
  energy consumption should not be ignored
• Increased capital costs of energy efficient
  buildings is usually off-set by benefits
• National and state goals for buildings are carbon
  neutrality by 2030
• LEED has steadily increased emphasis on energy
  efficiency
• LEED buildings are often not energy efficient and
  do not meet design objectives
• Post-construction monitoring of energy
  performance is essential

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Energy Use By Sector
Source US EIA, Monthly Energy Review, 7/2008.
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Iraqs Oil Production And Consumption, 1980-2004e
NOTE Production includes crude oil, lease
condensate, natural gas liquids, ethanol, and
refinery gain.
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Commercial Building Energy Use

• Depends on
• Building occupancy
• Location/ climate
• Orientation

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Incremental Costs and Benefits of LEED
Buildings(Capital E Analysis, 2003)
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Costs in California State Employee-Occupied
Office Buildings(Capital E, 2003)
Reasoning
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Architecture 2030 Challenge

• New buildings/major renovations meet 50 of
  regional average fossil fuel, GHG-emitting, and
  energy consumption
• Equal amount of existing building area renovated
  annually to 50 standard
• Fossil fuel reduction goals for new buildings
  gradually increased to carbon-neutral by 2030

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LEED Encourages

• Integrated Design
• High Performance Lighting (more efficient lights,
  task lighting, sensors to cut unnecessary
  lighting, use of daylight harvesting)
• Increased Ventilation Effectiveness
• Underflow Air Distribution Systems
• Commissioning
• Heat Island Reduction Measures
• On-site Electricity Generation
• Water Conservation

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LEED 2009 for New Construction and Major
Renovations
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LEED 2009 Possible Points

• Sustainable Sites 26
• Water Efficiency 10
• Energy Atmosphere 35
• Materials Resources 14
• Indoor Environmental Quality 15
• Innovation in Design 6
• Regional Priority 4
• increase from 25-33 not possible now to get
  Platinum w/o EA points

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Energy Atmosphere Prerequisites

• Commissioning of Building Energy Systems
• Minimum Energy Performance
• 10 improvement for new buildings
• 5 improvement for major renovations
• -compared to ASHRAE 90.1-2007
• appendix G or Advanced Energy Design
• Guideline for small offices (i.e. Hilliers
  bldg.)
• No CFCs

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Whole Building Energy Simulation (1-19 Points)
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