The Role of Material Use in Green Building

Transcription

1 The Role of Material Use in Green Building Sylvain Labbé, Canada Wood 2012 Canada Wood Group 1

2 Summary SCP and Green Economy Green Building Policies Accounting of Material Use A Global Strategy for the Wood Industry

3 Sustainable consumption? Since when did an SUV with 15 /100 km consumption? or a house or 500 m 2 for 2 people become green or sustainable?

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7 Facing the reality A Green economy or green capitalism? 1.Stop subsidies to fossil fuels (650 bil. in 2008) 2.Include costs of externalities (PES) 3.Clear and measurable policies and regulations

8 Green Building Policies

9 The Common Carbon Metric Measuring Energy Use & Reporting GHG Emissions from Building Operations Energy kwh/m 2 /yr Emissions (equivalent (e)) kgco 2 e/m 2 /yr In collaboration with: World Resources Institute (WRI)

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11 Life Cycle Analysis Zero emission? Avoids transferring environmental problems Emissions "elsewhere"! From a life-cycle phase to another From a geographical place to another From an ecosystem to another Source: Cécile Bulle, CIRAIG

12 Carbon footprint of the building sector The operation phase (50 yrs) = 80% of the global E/ C. Construction Operation Offices Finland (Junnila 2004) Offices USA (Junnila 2004) Residential Sweden (Adalberth et al. 2001) Offices Japan (Suzuki & Oka 1998) % of life cycle energy use Embodies energy Operational energy Global energy consumption can be reduced by 50% at net zero cost with the existing technology Source: SBCI, 2007

13 Embodied energy in a Green Building time frame Energy (E) 150 à 200 KWh/m².year DOMESTIC Hot water and sanitary (HWS 1. Efficiency increases the importance of embodied energy 2. UNFCCC post-kyoto Time frame (7 years) 3. Carbon discount (value of a ton on year 1 vs a ton avoided on year 50) Ventilation & clim Heating DOMESTIC Ventilation & clim HWS Heating Users habits Energy label and control 50 KWh/m².an) Embodied energy Embodied energy Use of material with lower carbon footprint in their production The more efficient the building is, the more important embodied energy in the life cycle scheme is Plus embodied energy is accounted for during the first year Evolution in time Source: CSTB

14 The war goes on, we just don t know it is started Steel Framing Alliance (SFA) Advocates for Steel Framing as Green Code adoptions start to expand (October 6, 2010) The International Green Construction Code (IgCC) is a model code focused on new and existing commercial buildings addressing green building design and performance. In the month of August, representatives from the Steel Framing Alliance participated in the first public hearing on the IgCC v1.0 in Rosemont, IL. SFA was engaged in the Rosemont hearings to both promote proposals that are favorable for steel and to defend our industry s interests against negative proposals Provisions for mandatory Whole Building Life Cycle Assessment were rejected although it was retained as a project elective. SFA is pleased that LCA is optional but will continue to press for its elimination from this code so that the full benefits of CFS framing always remain available as key parts of the compliance criteria The committee strongly urged the material industry to come to some type of consensus on what metrics to use in quantifying material use. SFA will continue to work with industry groups to reach consensus on these issues. It is important that CFS framing is well represented in the early stages of the code s development.

15 Metric under discussion at the UNEP-SBCI Material TAC GHG: material consumption emissions (Phase 1) in kg CO 2 eq/m 2 /yr Water: water used from consumption (Phase 1) in litre/m 2 /yr Resources used intensity, efficiency, scarcity: in kg/m 2 /yr of non-renewable and non-recycled materials (phase 1) Waste in landfill: in kg/m 2 /yr of building materials (Phase 3) Recycled and reused materials, plus biogenic material sent to bioenergy plants are excluded. Bioenergy: from biogenic building materials (phase 3) Metric: In kg CO 2 eq/m 2 /yr

16 What is our action plan for the forest sector?

17 WE NEED A COMMON STRATEGY The market growth for wood is driven by the end use (construction) The war in material use is open in the green building market 1. Inclusion of the LCA, in all Green building policies. (Phase 1-2-3) (and not limited to service life and recyclability), 2. Inclusion of the carbon sequestration of biogenic material (wood) into ISO 14067, CEN 350 and all green building accounting, 3. Implementation of EPD into the material accounting regulations, 4. Inclusion of the PES (carbon tax, water tax, biodiversity loss, etc.).