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Energy Trends and Opportunities in Residential Construction Innes Hood The Sheltair Group May 25
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Outline 1.Where are we now? 2.Where are we going? 3.Where do we want to go? 4.How do we get there?
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In a Nutshell Technical innovation has improved energy efficiency of new construction. BUT There is huge potential to increase profits and save energy. Why isn’t the construction industry doing more?
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Why Should We Care? 1.Commodity 2.Strategic resource 3.Basic human need 4.Ecological resource
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Where are we now?
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Energy Consumption by End Use
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Heating Fuel and Source
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Summary The industry is dominated by minimizing capital cost –Little attention paid to lifecycle costing The industry is dominated by a large number of small operators –We are still a cottage industry –Innovation is difficult
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Where are we going?
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Energy Prices What the Policy Makers Say
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And then there is reality…
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Housing Construction Trends New homes are getting more energy efficient BUT They are also getting larger, and we are filling them with more gadgets
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What about Apartments? Ref Enersys Analytics
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Building Energy Performance
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Summary Energy prices are likely to continue to increase. Improvements in energy performance are limited.
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Where do we want to get to? Human Wood/Hay Coal Oil Methane Renewables
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BC Provincial Targets SECTORTARGET New single family and row houses EnerGuide 80 by 2010, ( 32% savings in energy use) New multi-unit residential and commercial buildings 25% better than the MNECB by 2010, reducing average energy consumption by 37%
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Savings Potential
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Summary Significant technical and economic potential exists. Limited successes and performance improvements
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How do we get there?
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Opportunities Given the choice, consumers will invest in efficient equipment – why aren't we doing more? Furnace Example Mid Efficient High Efficient New80%20% Retrofit40%60%
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Opportunities (Detached) HE Furnace example: –Incremental cost $600 –Incremental Mortgage payment @ 6%=$47/yr –Annual operating cost savings (Gas @$12/GJ) =$113/yr Other Significant Opportunities –Advanced Framing with increased wall insulation –Full Height basement insulation –Integrated space and water heating –Window Upgrades –HRV –Dare I mention the Built America Program?
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Opportunities (MURBs) Wood Frame Example –23% energy savings translated into 36,000 investment with 6.4 yr payback – Getting consumers to pay is challenging – but not impossible
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The Land Use Connection Densification (integration) is having more impact on energy use than conservation
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Neighborhood Scale Growing trend to district heating –Athletes Villages SEFC –City of North Vancouver –RMOW
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Summary Significant energy and cost savings exist Progress is limited Need to work more effectively as an industry to achieve these results
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Thank you! Innes Hood The Sheltair Group ihood@sheltair.com
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