NEW CITY OF VANCOUVER REZONING REQUIREMENTS MARCH 16 TH, 2017 SUBTITLE Martina Soderlund, P.Eng, BEMP, LEED AP BD+C E: martina@reloadsustainable.com
WHO AM I Building Performance Specialist
OUTLINE 1. Background 2. New Rezoning Requirements 3. Compliance and Process 4. Discussion
A Performance Perspective
BUILDINGS 55% of Vancouver s GHG emissions
WHY ARE BUILDINGS IMPORTANT IN THE CARBON DISCUSSION? Buildings are the #1 contributor to GHG s Solid Waste 8% 13% Light-Industrial Buildings Vehicles 37% Buildings 55% 12% 11% Multi-Unit Residential Buildings Commercial Buildings 19% 1 & 2 Family Homes Vehicles 55% of Vancouver s GHG emissions Solid Waste Source: City of Vancouver
2020 GREENEST CITY ACTION PLAN GREEN BUILDING Category TARGET: Require all buildings constructed from 2020 onward to be carbon neutral in operations TARGET: Reduce energy use and GHG emissions in existing buildings by 20% over 2007 levels Buildings Source: City of Vancouver
RENEWABLE CITY STRATEGY Our Future to 2050 TARGET: Derive 100% of the energy used in Vancouver from renewable sources before 2050 TARGET: Reduce greenhouse gas emissions by at least 80% below 2007 levels before 2050 Buildings City Goal: Real and Reliable Carbon Reductions Source: City of Vancouver
RENEWABLE CITY STRATEGY Our Future to 2050 Buildings Source: City of Vancouver
NEW- ZERO EMISSIONS BUILDING PLAN (ZEBP) Carbon Zero Operations by 2030 NEW: Zero Emissions Building Plan (July 2016) Target: Zero operational greenhouse gas emissions for NEW BUILDINGS by 2030 Includes step down emission targets over time In that plan updated REZONING POLICY 2017 Source: City of Vancouver
NEW- ZERO EMISSIONS BUILDING PLAN (ZEBP) Two Overall Pathways for Real and Reliable GHG Reductions High Performance Buildings Envelope + Ventilation Aggressive EUI, TEDI and GHG limits Will support long term efficiency Low Carbon Energy Source Low-carbon supply guaranteed NEU Mandatory Areas (TBD) More basic EUI, TEDI, GHG limits Source: City of Vancouver
NEW REZONING POLICY - TIMELINE Green Buildings Adopted by council November 2016 Come into effect May 1st, 2017 Between now and then, project have the option of using current requirement, OR the new Source: City of Vancouver
Buildings WHAT IS HAPPENING IN THE PROVINCE? Energy Step Code in Development Stepcode -Voluntarily beyond current building code: ASHRAE 90.1-2010 or NECB 11 To prepare for future versions of BC Building Code United efforts implement energy targets aligned with City of Vancouver Requires Energy Modeling In Force: End of 2017.
What are the New Rezoning Requirements for Green Buildings?
CURRENT REZONING POLICY - TARGETS Green Buildings LEED Gold minimum 63 points 22% Better than ASHRAE 90.1-2010 1 Water Efficiency Point 1 Stormwater Point Connection to Neighborhood Energy System (NEU) No differentiation between building types (Part 3) Source: City of Vancouver
NEW REZONING POLICY High Performance Buildings New RZ Policy Residential (MURBS) Commercial Passive House Certified OR The 10 point System Passive House Certified OR LEEDv4 AND AND 0 Performance Targets Performance Targets
PASSIVE HOUSE PRINCIPLES Five basic principles Super insulated Thermal bridge free Airtight shell Superior glazing (triple pane) Ventilation preheat/ heat recovery
WHAT IS A PASSIVE HOUSE? The classic concept The passive concept Before Heating Energy Demand = 290 kwh/m 2 After Heating Energy Demand < 20 kwh/m 2
PASSIVE HOUSE TARGETS Performance Requirements Airtight Shell: 0.6 ACH @ 50 Pa Annual heating: 15 kwh/m2/year Annual cooling: 15 kwh/m2/year Primary Energy: 120 kwh/m2/yr
Apartment Bldg Liebefeld, Switzerland 2006 Primary Energy 90 kwh/m2 Glazing: 0.5 W/m2K Exterior wall: 0.1 W/m2K Roof: 0.1 W/m2K Timber+reinforced concrete 100% renewable energy Passive+Active solar use Subsoil heat exchanger Pellet heating system 22
Apartment Bldg Hamburg, Germany 2009 Floor area 2,538 m2 Primary energy 83 kwh/m2 Glazing: 0.52 W/m2K Exterior wall: 0.13 W/m2K Roof: 0.09 W/m2K 300 mm EIFS Cross flow heat recovery District Heating 23
Primary School UK Wolverhampton, 2011 Bushbury Hill Primary School Winter Primary Energy = 168 kwh/m2 Expected Summer Primary Energy < 80 kwh/m2 24
Kindergarden Denmark 2009 Floor area 782 m2 Primary energy 102 kwh/m2 Glazing: 0.74 W/m2K Exterior wall: 0.07 W/m2K Roof: 0.06 W/m2K Prefab concrete, wood, plaster Rotary heat exchanger Geothermal heating Solar thermal+pv District heating 25
Office Bldng Ludwigshafen, Germany 2007 Area: 10,000m2 Net Zero Energy Building Geothermal heating Annual Savings: 200,000L oil Cost savings: EUR 117,000 26
Office Tower RHW.2 Vienna, Austria 2014 Area: 25,000m2 First Passive House Certified Tower Double skin glazing Ground Source Heat Pumps 27
Aeropolis offices architectes associés kindergarden O2 architects social housing B architecten Belgium - Passive House Examples A2M architects 28
NEW REZONING POLICY High Performance Buildings New RZ Policy Residential (MURBS) Commercial Passive House Certified OR The 10 point System Passive House Certified OR LEEDv4 AND AND 0 Performance Targets Performance Targets 29
NEW REZONING POLICY RESIDENTIAL (MURBS) The 10 point system 3 High Level Outcomes with 10 Requirements (No LEED!) Zero Emissions Buildings 1) ZEBP 2016 Limits 2) Report Refrigerant + Embodied Carbon 3) Enhanced Commissioning 4) Whole Building Airtightness Testing 5) Energy System Sub-Metering and Reporting Healthy Buildings 6) Direct Ventilation 7) Low-Emitting Materials 8) Indoor Air Quality Testing Resilient Buildings 9) Green Stormwater Infrastructure 10) Resilient Water Access OR Passive House 0 0 30
NEW REZONING POLICY ZEBP 2016 TARGETS For Both Residential and Commercial Buildings OR Passive House 0 0 31
WHAT DOES TEUI MEAN? Design Implications.. TEUI (kwh/m 2 /yr) total energy utilization intensity Total building energy including process Based on building area (excluding parkades) Lighting, plugs, heating/cooling, fans, pumps, DHW, kitchen gas, appliances, exterior lighting+heating Energy modeling to show compliance
kwh/m2 How much more efficient is the new TEUI? 300 250 BAU 200 Current Energy Code Current Energy Code 150 100-30% -40% 50 0 MURB Current ASHRAE 90.1-2010 New RZ Targets ASHRAE 90.1-2010 Average 0 High Rise MURB MURB Office 0 (Vancouver) New RZ Targets Office Passive House Target (fuel source depending) 33
Efficient Hospitals Around the World compared to the PNW Energy Utilization Intensity (EUI) kwh/m2 0 100 200 300 400 500 600 700 800 900 Average Existing (CBECS) PNW Hospital (4 buildings) Average Existing Rigshospitalet Akershus St Olaufs Pacific North West Norway 400 438 362 353 829 625 35% below ASHRAE 90.1-2010 Average Existing New Karolinska Sweden 221 224 Nanaimo Regional General Hospital ED Local Best Practice 0 0 301 Source: PNW, Sweden, Norway - data from University of Washington, IDL. NRGH data from VIHA 34
NEW REZONING POLICY ZEBP 2016 TARGETS For Both Residential and Commercial Buildings OR Passive House 0 0 35
WHAT DOES TEDI MEAN? Design implications TEDI (kwh/m 2 /yr) thermal energy demand intensity Include envelope heat loss Include thermal bridge effect Include ventilation heating including heat recovery Ignore all other HVAC efficiencies and DHW ENVELOPE IMPLICATIONS no more cheating. Source: iphi
WHAT DOES GHGI MEAN? Design implications GHGI (kg/m 2 /yr) greenhouse gas intensity Limit use of natural gas Push industry into using electricity.? Pay attention to operational cost. Electricity: $0.09/kWh Natural Gas: $0.03/kWh
0 0 Source: City of Vancouver 38
NEW PERFORMANCE TARGETS Design implications - possible.. Potential large reductions in glazing percentage Triple pane glazing might be required to offset Details and thermal bridging expertise needed Beyond current Energy Code Electric source for heating.. Increase in operational cost?? Electricity: $0.09/kWh Natural Gas: $0.03/kWh
PERFORMANCE TARGETS Design implications at no additional cost? Source: iphi
Compliance Requirements 41
HOW DO WE SHOW COMPLIANCE? Documentation Requirements 1) Rezoning Application EUI, TEDI and GHG - NEW 2) Building Permit Application Energy Code ASHRAE 90.1-2010 or NECB 11 3) City Screening, possibly 3 rd party reviews TBD 4) Specific Energy Modeling Guidelines to Use - NEW 5) Signed Letter from the Energy Modeler - NEW P.Eng or BEMP (ASHRAE) EUI, TEDI and GHGI 6) Energy Checklist from Energy Modeler - NEW 0 0 42
Energy Model REQUIRED EUI GHG TEDI RZ 0 0 43
IMPACT ON PROJECT PROCESS AND PLANNING A few key items.. Allow for longer design time (double for passive house (?)) Do early airtightness testing Training of Trades essential Engage a building energy modeling professional BEFORE rezoning Allow for fee s in project budget Look for experience to save effort Ask for energy modeler credentials no longer under Mech discipline or Arch. P.Eng and/or Building Energy Modeling Professional (BEMP) CaGBC experienced modelers list, good place to start. 0 0 44
QUESTIONS? 45
WHERE IS THE ENERGY USED? Multi Unit Residential Building Lower Mainland Domestic hot water 25% Suite electric baseboard heating 11% Suite lighting and plugloads 17% Ventilation heating/fireplaces 26% Common area electricity 21% Energy Utilization Intensity = 213 kwh/m 2 Source: RDH Engineering 46