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CHBA Canadian Renovators’ Council October 27th, 2012

Deep Energy Retrofit Plan Overview: 2012-2016

Mark Carver,

Project Officer, Housing Teammark.carver@nrcan.gc.ca

613-947-3155

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Objectives

1. To reduce the cost, time and uncertainty associated with deep-energy retrofits that achieve energy savings of 60% or more

2. To define innovative, cost-optimal strategies for integrating emerging technologies into existing homes

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‘Bread and butter’ retrofits

BEFORE AFTER

Kitchen & Bathroom retrofitsAesthetics are a large market driverTrades coordination is routine Project timelines can be relatively short and predictable

Whole-home energy retrofitCould it become another ‘bread and butter’ retrofit category?What barriers would need to be overcome?

Project: Cost-optimal, packaged renovation solutions aimed at overcoming those barriers

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Deep Energy Retrofit Opportunity

Canadians spend $26B on utility bills a year

By developing deep energy retrofit strategies to reduce energy use by 60% we could shift up to $16B annually from utilities to renovation sector

Average single-family homeowners spend $3500 / year on energy bills 60% energy improvement = $2100/yr savings

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Whole-home energy retrofits

Improve aesthetics & .. Significantly reduce energy costs Increase resale value Improve comfort Reduce carbon footprint

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Research Plan1. Engage industry

2. Assess technologies and retrofit approaches

3. Select 3 case study archetypes

4. Optimize costs

5. Package results and define pathways

MECHANICAL AND ELECTRICAL COMBO SPACE AND WATER HEATINGCOMBINED HEAT AND POWERHEAT/ENERGY RECOVERY VENTILATORS 14 LOW VOLTAGE DC LIGHTINGINTEGRATED MECHANICAL SYSTEMS (IMS)PLUG-IN ELECTRIC VEHICLE READY GARAGEZONED FORCED AIR

ENVELOPE & CONSTRUCTIONADVANCED FRAMINGTRIPLE GLAZED WINDOWSCOOL ROOF SYSTEMSINSULATED CONCRETE FORMS [ICF]VACUUM INSULATION PANELSUNDERSLAB INSULATION

RENEWABLE ENERGY PASSIVE SOLAR DESIGN PHOTOVOLTAIC [PV] MODULESSOLAR HOT WATER SYSTEMSSOLAR LIGHT TUBESSOLAR READYURBAN WIND TURBINES

1. 1900s ?

2. 1940s ?

3. 1980s ?

Eg. Pathway Specifications for Case Study 1

1. Lowest Cost2. Simple and Durable

3. Least interruptive

Walls Interior gut, stud bays spray foamed + 2” polyiso , R38

Exterior prefabricated façade, R20

Interior air sealing only

Space Heating Electric resistance

Gas furnace Cold climate air source heat pump

Domestic Hot Water

Heat pump water heater + heat recovery

Heat pump water heater + heat recovery

Heat pump water heater + heat recovery

Solar n/a n/a 9.0 kWp PV

Upgrade Cost $38,846 $40,727 $58,424

Annual Energy Savings

$3109 $2054 $8726

Loss in floor area

78 ft2 n/a n/a

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1. Engage Industry

Select archetypes Provide / validate cost data Identify technologies and retrofit

approaches Identify barriers Review specification and solutions

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1. Engage Industry Group Meeting

FrequencyMeeting Type

Local advisory group (Ottawa based)

quarterly meetings or conference calls

National steering committee

bi-annual conference calls

CRC annual annual updates at CRC meetings

Broader national renovation industry

Upon project completion

webinar to share results with industry

More impact

More effort

Less effort

Less impact

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2. Assess Technologies

4-6 page documents describing:

• Individual technologies or retrofit measures

• How to install or integrate into existing homes

• Market benefits

• Cost/benefit analysis

• Maintenance considerations

• Code considerations

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Technology Assessments

Industry partners will help identify emerging technologies and retrofit approaches for assessment, i.e. zoned forced-air vacuum insulation panels (VIPs) Cold-climate air source heat pumps LED lighting

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Deep energy retrofit requires a a whole-house approach

Insulation & Sealing

Windows

Mechanical Equip.

Renewable Energy

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Simple Problems Quickly Become ComplexComponent Options # of choices

Walls Interior 2” XPS, exterior 2” EPS, spray-foam 3

Foundation Exterior XPS, interior wood frame, spray-foam 3

Attic Blown-in cellulose: R50, R60, R80, R100 4

Air sealing target 3.0 ACH, 2.0 ACH, 0.6 ACH 3

DHW heating Condensing tank, tankless, heat pump 3

Space heating EnergyStar, 96% AFUE, tankless combo 3

Drain water HR None, 36”, 60” 3

HRV 60% SRE, 80% SRE, ERV 3

Solar Thermal None, 2 collectors 2

PV None, 3 kWp, 5 kWp 3

Total number of possibilities 52,488

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3. Simulation and cost optimization We will use sophisticated optimization software to

consider thousands of combinations of approaches

Cost-optimal, whole-house renovation strategies

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Walls: R52 Double Stud Wall

HVAC: Electric Baseboards

DHW: Heat Pump + Heat Recovery

PV: 11.3 kWp

Upgrade $: $78,846

Walls: R28 SIPs Wall

HVAC: Cold Climate Air Source HP

DHW: Heat Pump + Heat Recovery

PV: 10.0 kWp

Upgrade $: $79,727

Walls: R52 Double Stud Wall

HVAC: Gas-fired forced-air

DHW: Heat Pump + Heat Recovery

PV: 13.9 kWp

Upgrade $: $102,755

Whole Home Energy Analysis and Optimization

Summary Plot

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Retrofit Pathways

Example... Pathway Specifications for Case Study 3

1. Lowest Cost2. Simple and Durable

3. Least interruptive

Walls Interior gut, stud bays spray foamed + 2” polyiso , R38

Exterior prefabricated façade, R20

Interior air sealing only

Space Heating Electric resistance Gas furnace Cold climate air source heat pump

Domestic Hot Water Heat pump water heater + heat recovery

Heat pump water heater + heat recovery

Heat pump water heater + heat recovery

Solar n/a n/a 9.0 kWp PV

Upgrade Cost $38,846 $40,727 $58,424

Annual Energy Savings $3109 $2054 $8726

Loss in floor area 78 ft2 n/a n/a

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Prefabricated façades for retrofit

Upgrade Curb Appeal while… air sealing insulating eliminating thermal bridging

..all within days

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Precise dimensioning via 3D Scanning technology

Point clouds can be imported:

• Autodesk (AutoCAD, Revit, Inventor)

• ArchiCAD

• CATIA

Cost (80% decrease in last 5 years)

• Equipment: $50k

• Service: ~$800-1000 / house

Video3d_scan_-_the_palace_of_culture_640x328.mp4

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Prefab roof panels for attic

renovations

BEFORE

AFTER

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Schedule and OutputsYEAR

1 2 3 4

- review existing approaches

-Identify key technologies for assessment

- analyze stock

-Select 3 case study houses

- collect costs

- tech assessments

- optimization

-present findings to advisory groups

-refine

- review existing approaches

- 3D laser scanning methodology

-develop prefab concepts- conduct moisture analysis

- Draft prefab home retrofit guidelines

Prefab exterior project

Retrofit pathway optimization

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Thanks

Are you interested in Deep Energy Retrofit? Are you interested in partnering to find faster, more

affordable approaches? If so, please get in touch

Mark Carver

Project Officer, Housing Teammark.carver@nrcan.gc.ca

613-947-3155

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Deep Energy Retrofit Need Canadians spend $26B on utility bills a year

By developing deep energy retrofit strategies to reduce energy use by 60% we could shift up to $16B annually from utilities to renovation sector

Average homeowners spend $2100 / year on energy bills 60% energy improvement = $1200/yr savings

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Example of builder selected technology: Forced air zoning

On-PeakMid-Peak

Mid-Peak

Off-Peak

Off-Peak

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Forced Air ZoningFinding opportunities that would otherwise be missed..

Initial Perceptions Complicated to install and costly

($5000 to $7000 range) Requires electrician Applicable in luxurious custom

homes only Energy benefits a question mark

Process Sufficient info in two staged

selection process to enable builders to select it in – barely!

Enabled builders to define what they 1) wanted presentations to focus on, & 2) who they wanted to present

New area – experts needed to think through and develop new presentations to respond

Perceptions Changed… Current issue: Common customer issue with heating and cooling in tall

narrow homes Legitimacy: A few Ontario builders are applying in modestly priced

homes with good results Complexity: Options are available that minimize installation issues Access & Liability: Options available that maintain access to dampers,

and that leave liability with manufacturer Generic duct design approach: new generic duct design approach could

be used with any centrally ducted system. Costed using a builders sample home at $100 more than traditional.

Field Trials Results: Statistically valid energy analysis on zoned and unzoned systems. Results included 25% peak shaving & shifting during summer peaks on electrical grid, more with utility thermostat control

Customer Feedback: Field trial results showed that 95% of homeowners surveyed felt that system was providing desired benefits and would recommend it to a friend.

Costing: Manufacturers and suppliers saw opportunity to move from boutique sales to volume and dropped price significantly below that provided to builders currently using these products.

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Overview

We will develop solutions to achieve these savings by: partnering with the industry to ensure alignment identifying emerging, transformative technologies; evaluating their performance through technical assessments, modeling, and cost-benefit analysis; using optimization software to find cost-optimal combinations of approaches; developing strategies for incorporating such technologies into existing homes.

Three researchers will carry out a variety of sub-projects to achieve these outcomes over the next four years.

Objectives:

• innovative, cost-optimal strategies for integrating emerging technologies into existing homes

• to reduce the cost, time and uncertainty associated with deep-energy retrofits that achieve energy savings of 60% or more

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Why should energy retrofits matter for renovators?

2 important reasons:1. Your client’s energy bills, their resale

value and their home’s energy rating (ERS)

2. An energy retrofit represents an additional, simultaneous service that you can offer to compliment other renovations

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Energy costs Canadian homeowners spend $3,314 a year in energy costs on

average

Owners of typical new homes can expect to spend about $2,140 annually.

$2000

$3000

$4000

$5000

Avg a

nnual energ

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ERS / Resale Value

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‘Bread and butter’ retrofits

Photos: High-End Renovations Inc. Outremont, QC homerenovationmontreal.com

BathroomsKitchens

Whole-home energy retrofits?BEFORE AFTER

Could whole-home energy retrofits be a renovation category with significant market appeal?

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‘Bread and butter’ retrofits

BEFORE AFTER

Kitchen & Bathroom retrofitsAesthetics are a large market driverTrades coordination is routine Project timelines can be relatively short and predictable

Whole-home energy retrofitCould it become another ‘bread and butter’ retrofit category?What barriers would need to be overcome?

Project: Cost-optimal, packaged renovation solutions aimed at overcoming those barriers

Photo

Cre

dit

: H

igh-E

nd

Renovati

ons

Inc.

Photo

Cre

dit

: N

ow

House

Pro

ject