Green Roofs and Green Goals: The Role of New Technologies and Standards in New Green Buildings

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Green Roofs and Green Goals The Role of New
Technologies and Standards in New Green Buildings

• Craig Edwards
• Director, Energy and Sustainability
• CHRA Conference, April 4, 2008

Housing Matters
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Agenda

• Overview of BC Housing
• Provincial Goals and BC Housings Green Plan
• BC Housings Green Building Design Standards
• BC Housing LEED Gold Project Examples
• Compatibility Between Environmental Goals and
  Affordable Housing

Housing Matters
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• Existing Building Portfolio
• BC Housing Manages
• 7,800 public housing units in 620 buildings,
• 300 Group Homes
• Administers
• 33,400 non-profit units
• 3,700 shelter beds
• 19,000 rent supplements
• 20,000 co-op units

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• New Construction
• Independent Living BC-
• 4,000 assisted living seniors and disabled units
• 1500 Units New construction
• Conversions
• Rent supplements
• Provincial Homelessness Initiative
• Commitment to create 4000 housing units for
  homeless, mental illness, addictions, aboriginal,
  women
• 2300 housing units allocated in more than 20
  communities to date
• Aboriginal Housing Initiative
• 292 units at 13 housing developments in 10
  communities across the province
• Group Homes
• 4 new group homes recently completed

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Provincial Green Building Context

• Bill 44 Greenhouse Gas Reduction Targets Act
• Target to reduce greenhouse gas emissions in B.C.
  by at least 33 by 2020, 80 by 2050
• Government operations carbon neutral by 2010
• BC Energy Plan, 2007
• LEED Gold requirement for Provincially funded new
  buildings
• Public Sector Energy Conservation Agreement
• Requirement for reducing electricity consumption
  in existing provincial buildings by five per cent
  from the 2006 baseline by 2011, 14 per cent by
  2016, and 20 per cent by 2020.

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What is BC Housings Green Plan?
Housing Matters
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Green Plan Priorities

• Build all New Social Housing to be Carbon Neutral
• Reduce Energy Consumption and Greenhouse Gas
  Emissions
• Reduce Resource Consumption and Waste
• Create and Support a livegreen Culture Among
  Employees
• Increase Environmental Awareness and Action Among
  Stakeholders and Tenants

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Why is it important?

• Aligns with provincial government goals
• Reduce greenhouse gas emissions in B.C. by at
  least 33 by 2020
• Make government operations carbon neutral by
  2010
• Improves our efficiency and reduces costs
• Helps effect greater social change and address
  global climate change

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BC Housing New Construction Standards

• Provincial Homelessness Initiative Design and
  Construction Standards
• LEED Gold Certification
• Greenhouse Gas Neutral Strategy
• Energuide 80 for Small Buildings

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BC Housing High Performance GHG Neutral Strategy
Housing Matters
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BC Housing LEED Gold Priorities
Reduced Energy Consumption and GHG Emissions
Improved Indoor Environmental Quality
Reduced Operating Costs and Maintenance
Better Buildings
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Woodlands LEED Certified

• Woodlands BC housings first LEED certified
  project Completed Jan/08
• 59 Units Assisted Living Seniors Apartments
  First Level Medical Clinic and Daycare
• Energy Performance - 34 Below MNECB
• 2.5 Incremental Construction Cost
• 13 Year payback on energy features
• Fresh air ducted to each suite

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12 City of Vancouver Sites
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12 City of Vancouver Sites Design Charettes
1050 Expo Blvd Vancouver

• 129 suites 325 ft2
• High Perf Envelope
• GSHP
• Heat Recovery Ventilation
• Solar Wall

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12 City of Vancouver Sites

• Option A
• 2 x ASHRAE Envelope
• Heat Recovery Ventilation
• System Options

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Compatibility Between LEED and Affordable Housing
Sustainable Sites

• Good Fit
• Public Transportation Access
• Bicycle Storage
• Reduced Parking Capacity
• Development Density
• Brownfield Development

• Less of a Good Fit
• Storm Water Management
• Reducing Heat Island Effect

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Compatibility Between LEED and Affordable Housing
Water Efficiency

• Good Fit
• Water Efficient Landscaping
• Water Use Reduction
• Low Flow Toilets and Showerheads

• Less of a Good Fit
• Water Cisterns
• Grey Water Re-use

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Compatibility Between LEED and Affordable Housing
Energy and Atmosphere

• Good Fit
• Optimized Energy Performance
• System Commissioning
• Renewable Energy
• Measurement and Verification

• Less of a Good Fit
• Green Power Certificates

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Compatibility Between LEED and Affordable Housing
Materials and Resources

• Good Fit
• Storage for Recyclables
• Building Re-use
• Construction Waste Management
• Recycled materials
• Local materials
• Durable Building

• Less of a Good Fit
• Certified Wood

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Compatibility Between LEED and Affordable Housing
Indoor Environmental Quality

• Good Fit
• Tobacco Smoke Control
• Improved Ventilation Effectiveness
• Construction IAQ Management
• Low Emitting Paints, Carpets, etc
• Indoor Chemical/Pollutant Control
• Controllability of Systems
• Thermal Comfort
• Daylight and Views

• Less of a Good Fit
• Tobacco Smoke Control

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LEED Gold Projects
Friendship Lodge Prince George

• 30 Suites Aboriginal Homeless Transition Housing
• GSHP
• Heat Recovery Ventilation
• 62 Energy Savings (38,000 per year)

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LEED Gold Projects
1308 Seymour Street Vancouver

• 100 Homeless 350 ft2 Studios
• 11 Stories UG Parking
• LEED Gold
• GSHP, high performance envelope, heat recovery
  ventilation
• 59 energy savings (40,000 per year)

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LEED Gold Projects

• Garfield Residence New Westminster

• 24 Homeless units
• 4 Stories
• LEED Gold
• GSHP, high performance envelope, heat recovery
  ventilation
• 60 energy savings (20,000 per year)
• 95 GHG reduction

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LEED Gold Projects

• Salvation Army Gateway of Hope Langley

• 30 bed emergency shelter 25 bed transition
  housing program spaces offices
• 3 Stories
• LEED Gold
• GSHP, high performance envelope, heat recovery
  ventilation
• 42 energy savings (15,000 per year)

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LEED Gold Projects
Maxine Wright Center Surrey

• 12 bed 25 suite clinic daycare program
  spaces
• 3 Stories, 2 buildings
• LEED Gold
• Air source heat pumps, high performance envelope,
  heat recovery ventilation
• 57 energy savings (16,000 per year)

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Home Office - LEED Gold CI
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Energuide 80 - Successes to date

• Energuide 80 projects four energy efficient
  group homes built in the last year
• Topaz Place, Chilliwack 40 energy reduction
• NG Nair Place, Langley 60 energy reduction
• Stanhope, Victoria 20 energy reduction
• Guildford Glen, Surrey 20 energy reduction

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LEED Certified Projects Under Design or
Construction
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Conclusions

• Green New Building Standards
• Better Affordable Housing

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Public Housing Energy Retrofit Pilot Project

• 32 buildings in five lower mainland BC sites
• Energy use - 1.0 M/yr
• Energy savings - 160 K/yr
• Retrofit cost - 1.3M
• Payback 8 years

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Non Profit Housing Energy Retrofit Pilot

• 17 buildings in 8 sites in Vancouver, Victoria,
  and Dawson Creek
• Energy Use 300 K/Year
• Energy savings - 50 K/yr
• Retrofit cost - 400 K
• Payback 8 years

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Pre Post Retrofit Building Energy Performance
Index (BEPI)
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Energy Retrofit Pilot Energy Reduction By
Project
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Seven Maples Solar DHW
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Seven Maples Solar DHW
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Stamps Place Solar PV