Consulting-Specifying Engineer - November 2008 - (Page 44)

Codes & Standards Commercial state energy code status As of October 2008 WA MT OR ID WY NV UT CA NE CO KS OK IA IL MO TN AK MS AK TX LA FL HI AL GA IN OH KY WV VA NC SC SD ND MN WI MI PA NY ■ MA ■ RI ■ CT ■ NJ ■ DE ■ MD ■ DC NH ■ VT ■ ME credit without the energy modeling requirement. Toward 50% reductions and beyond Some states, like Oregon, are moving rapidly toward statewide advanced building codes, but with a local option in place. In early 2008, Oregon Governor Ted Kulongoski announced the formation of several workgroups to recommend legislation for 2009 that would help achieve the state’s goals toward greenhouse gas reductions. One of the final recommendations sent to the governor was titled “Increase Energy Code Stringency to Help Achieve Carbon Neutral Energy Homes and Buildings by 2030.” As extensive research has shown, codes provide significant costeffective energy savings from the buildings sector, which can account for up to 40% of total emissions. Energy efficiency in commercial construction is one of the most cost-effective measures to achieve greenhouse gas reductions and manage the growing need for electric utilities to meet peak load requirements. These concerns are driving the need for rapid evolution in building energy codes. Many national, state, and local organizations and governments are developing responses to this need for more energyefficient buildings. In the near term and in the future, more energy- and cost-efficient building energy code strategies will be available, as an important “tool in the toolbox” to help meet the climate change challenge. Jim Edelson is a consultant to nongovernmental organizations on energy efficiency and climate policy. Mark Cherniack manages NBI’s Advanced Buildings Program, HVAC, and fault detection and diagnostics work. He has been working in the sustainable energy in the US and in Asia for almost 30 years. Acknowledgement Special thanks to David Cohan of the Northwest Energy Efficiency Alliance, the primary author of the legislative concept. Additional thanks to all Workgroup members and the Oregon Department of Energy staff who contributed to a successful Workgroup process and product. * * AZ * NM ■ Effective code meets or exceeds ASHRAE 90.1-2007 or equivalent ■ Meets 2006 IECC/ASHRAE 90.1-2004 or equivalent ■ Meets 2003 IECC/ASHRAE 90.1-2001 or equivalent ■ Meets 2001 IECC/ASHRAE 90.1-1999 or equivalent (meets EPCA) ■ Precedes ASHRAE 90.1-1999 or no statewide code ● Significant adoptions in jurisdictions * Lighter color indicates code has been adopted but not yet effective Figure 1 Current status of commercial energy codes by state. Source: U.S. Dept. of Energy, www.bcap-energy.org/node/21 to 50% reductions in energy use and cost. The generally assumed base case for measuring codes’ comparative energy savings is ASHRAE 90.1-2004, but the 90.1-2007 standard will be referenced as the energy baseline to be exceeded in LEED 2009, the ASHRAE Standard 189 still in development, and Green Globes. Although the ASHRAE 90.1–2010 goal is a 30% savings level over the 2004 standard, state or local adoption of the 2010 standard would roll out at least two, and more often three or more, years (or not all) after its adoption by ASHRAE. The New Buildings Institute (NBI) Core Performance platform provides a prescriptive path for retail, office, and schools up to 70,000 sq ft to reduce energy consumption 20% to 30% from the 90.1-2004/IECC standards. NBI expects to have the requirements in Core Performance available in IECC code enforceable language/format in January 2009. USGBC’s LEED program recognizes Core Performance Requirements and Enhanced Strategies for office, public assembly, retail, and schools under 100,000 sq ft. Projects can achieve up to five credits under New Construction (NC), Energy and Atmosphere (EA): Optimizing Energy Performance, without the building energy modeling requirement. LEED will also consider projects built to the AEDG Design Guides for NC EA Major national energy standards platforms • ASHRAE Standard 90.1-1999/2001/2004/2007; 90.1-2010 to be 30% above 90.12004; may include a plug load component • IECC 2003/2006 + 2007 Supplement; 2009 standard being adopted; residential • New Buildings Institute Core Performance: currently 20% to 30% above 90.1-2004; 15% above 90.1-2007; plug loads included • ASHRAE Advanced Energy Design Guides: 30% above 90.1-1999 • Proposed ASHRAE Standard 189:eferences 90.1-2007; includes “green” requirements • USGBC LEED: references current ASHRAE + 15%; LEED 2009 references 90.1-2007 • Green Globes: references ASHRAE 90.1-2007 + sliding 5% to 15% above 90.1 – 2007 + green requirements • Federal Buildings: 50% total energy reduction by 2015; 55% fossil fuel reduction by 2010, zero fossil fuels by 2030—zero carbon; includes green requirements. 44 Consulting-Specifying Engineer • NOVEMBER 2008 http://www.bcap-energy.org/node/21

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Consulting-Specifying Engineer - November 2008 Contents Viewpoint News M/E Roundtable Comissioning Lighting Controls Prevent Plugholing: Smoke Control Done Right Commercial Geothermal Heating and Cooling System Design Codes &�Standards Case Study New Products Equipment Lifecycles Advertiser Index Green Space

Consulting-Specifying Engineer - November 2008

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