CHBA Canadian Renovators’ Council
October 27th, 2012
Deep Energy Retrofit Plan Overview: 2012-2016
Mark Carver,
Project Officer, Housing Team
mark.carver@nrcan.gc.ca
613-947-3155
1
Objectives
2
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
Photo Credit: High-End Renovations Inc.
‘Bread and butter’ retrofits
Kitchen & Bathroom retrofits
Aesthetics are a large market
driver
Trades coordination is routine
Project timelines can be relatively
short and predictable
BEFORE
3
AFTER
Photo Credit: Now House Project
Whole-home energy retrofit
Could 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
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
4
Whole-home energy retrofits
 Improve aesthetics & ..




5
Significantly reduce energy costs
Increase resale value
Improve comfort
Reduce carbon footprint
Research Plan
1. Engage industry
2. Assess technologies and
retrofit approaches
3. Select 3 case study
archetypes
4. Optimize costs
5. Package results and define
pathways
6
Eg.
Pathway Specifications for Case Study 1
MECHANICAL AND ELECTRICAL
2. Simple
3. Least
Lowest Cost
COMBO 1.SPACE
AND WATER
HEATING
and Durable
interruptive
COMBINED HEAT AND POWER
HEAT/ENERGY
1900s
?RECOVERY
Walls1.
Interior gut,
stud ExteriorVENTILATORS
Interior air 14
bays sprayDC LIGHTING
prefabricated
sealing only
LOW VOLTAGE
foamed
+
2”
façade,
R20
INTEGRATED MECHANICAL SYSTEMS (IMS)
polyiso , R38
PLUG-IN ELECTRIC VEHICLE READY
Space GARAGE
Heating Electric
Gas furnace
Cold climate air
resistance
source heat
ZONED FORCED AIR
pump
ENVELOPE & CONSTRUCTION
Domestic
Hot
Heat pump
Heat pump
ADVANCED
FRAMING Heat pump
2.
1940s
? + water heater water heater +
Water
water heater
TRIPLE GLAZED
WINDOWS
heat recovery
+ heat
heat recovery
COOL ROOF SYSTEMSrecovery
INSULATED CONCRETE FORMS [ICF]
Solar
n/a
n/a
9.0 kWp PV
VACUUM INSULATION PANELS
UNDERSLAB INSULATION
Upgrade Cost
$38,846
RENEWABLE
ENERGY$40,727
PASSIVE SOLAR DESIGN
3.
Annual
Energy 1980s
$3109 ? [PV] MODULES
$2054
PHOTOVOLTAIC
Savings
SOLAR HOT WATER SYSTEMS
SOLAR LIGHT
TUBES
Loss in floor
78 ft2
n/a
SOLAR
READY
area
URBAN WIND TURBINES
$58,424
$8726
n/a
1. Engage Industry
 Select archetypes
 Provide / validate cost data
 Identify technologies and retrofit
approaches
 Identify barriers
 Review specification and solutions
7
1. Engage Industry
More impact
More effort
Group
Meeting
Frequency
Meeting 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
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.




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zoned forced-air
vacuum insulation panels (VIPs)
Cold-climate air source heat pumps
LED lighting
Deep energy retrofit requires a
a whole-house approach
Insulation & Sealing
Windows
Mechanical Equip.
Renewable Energy
11
Simple Problems Quickly Become Complex
Component
Options
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
12
# of choices
52,488
3. Simulation and cost optimization
 We will use sophisticated optimization software to
consider thousands of combinations of approaches
Cost-optimal,
whole-house
renovation
strategies
13
Whole Home Energy Analysis and
Optimization
Walls:
R52 Double Stud Wall
Walls:
R28 SIPs Wall
HVAC:
Electric Baseboards
HVAC:
Cold Climate Air Source HP
DHW:
Heat Pump + Heat Recovery
DHW:
Heat Pump + Heat Recovery
PV:
11.3 kWp
PV:
10.0 kWp
Upgrade $: $79,727
Upgrade $: $78,846
Walls:
R52 Double Stud Wall
HVAC:
Gas-fired forced-air
DHW:
Heat Pump + Heat Recovery
PV:
13.9 kWp
Upgrade $: $102,755
14
Summary Plot
Retrofit Pathways
Example...
Pathway Specifications for Case Study 3
1. Lowest Cost
15
2. 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
Prefabricated façades for retrofit
 Upgrade Curb Appeal while…
 air sealing
 insulating
 eliminating thermal bridging
..all within days
16
Precise dimensioning via 3D
Scanning technology
Point clouds can be imported:
Cost (80% decrease in last 5 years)
• Autodesk (AutoCAD, Revit, Inventor) • Equipment: $50k
• Service: ~$800-1000 / house
• ArchiCAD
• CATIA
17
3d_scan_-_the_palace_of_culture_640x328.mp4
Video
Prefab roof panels for
attic renovations
BEFORE
18
AFTER
Schedule and Outputs
YEAR
1
Retrofit
pathway
optimization
Prefab
exterior
project
19
- review existing
approaches
-Identify key
technologies for
assessment
- review existing
approaches
2
- analyze stock
-Select 3 case
study houses
3
4
- tech
assessments
-present findings
to advisory groups
- optimization
-refine
-develop prefab
concepts
- conduct
moisture analysis
- Draft prefab
home retrofit
guidelines
- collect costs
- 3D laser
scanning
methodology
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 Team
mark.carver@nrcan.gc.ca
613-947-3155
20
21
22
23
24
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
25
Example of builder selected
technology: Forced air zoning
Off-Peak
26
MidPeak
On-Peak
MidPeak
OffPeak
Forced Air Zoning
Finding opportunities that would otherwise be missed..
Initial Perceptions
Perceptions Changed…





Complicated to install and costly
($5000 to $7000 range)
Requires electrician
Applicable in luxurious custom
homes only
Energy benefits a question mark
Process



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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

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




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.
Overview
Objectives:
• innovative, cost-optimal strategies for integrating emerging
technologies into existing homes
• to reduce the cost, time and uncertainty associated with deepenergy retrofits that achieve energy savings of 60% or more
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.
28
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
29
Energy costs
Avg annual energy cost
 Canadian homeowners spend $3,314 a year in energy costs on
average
$5000
$4000
$3000
$2000
 Owners of typical new homes can expect to spend about $2,140
annually.
30
ERS / Resale Value
31
‘Bread and butter’ retrofits
Bathrooms
Kitchens
Photos: High-End Renovations Inc. Outremont, QC homerenovationmontreal.com
BEFORE
AFTER
energy retrofits?
Could whole-home energyWhole-home
retrofits be a renovation
category with significant market
32
appeal?
Photo Credit: High-End Renovations Inc.
‘Bread and butter’ retrofits
Kitchen & Bathroom retrofits
Aesthetics are a large market
driver
Trades coordination is routine
Project timelines can be relatively
short and predictable
BEFORE
33
AFTER
Photo Credit: Now House Project
Whole-home energy retrofit
Could 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