commercial windows and insulation
DESCRIPTION
Commercial Windows and Insulation. RTF November 2, 2010. The Plan for Commercial Weatherization. Goal Expand deemed savings for commercial windows and insulation to additional building types and sizes at December 7 th RTF meeting Today Review regional potential - PowerPoint PPT PresentationTRANSCRIPT
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Commercial Windows and Insulation
RTFNovember 2, 2010
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
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The Plan for Commercial Weatherization Goal
•Expand deemed savings for commercial windows and insulation to additional building types and sizes at December 7th RTF meeting
Today•Review regional potential•Review existing data from multiple sources•Gather RTF input on current analysis and methodology for
developing new measures−Where are current data sufficient?−Where could additional modeling be an efficient method for additional
measures? •Given size of potential, find balance between available data
and time/money spent on further analysis December 7th
•Present expanded measures based on today’s discussion
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Current RTF MeasuresCommercial Windows
Measure DetailsBuilding
Type
Heating
Zone
Savings
(kWh/sq. ft)
Cost
($/sq. ft)
Lifetime
(years)
TRC B/C with
6th Plan
Avoided Costs
and 20 Year
Lifetime
Small Office 1 7.2 21.56 45 0.9
Small Retail 1 7.6 21.56 45 0.9
Small Office 2 9.9 21.56 45 1.2
Small Retail 2 11 21.56 45 1.4
Small Office 3 12 21.56 45 1.5
Small Retail 3 13 21.56 45 1.6
*Note: As of January 1, 2010, Energy Star Window criteria for the Northern region is U 0.30
Energy Star (U0.35) Prime
Window Replacement*
• <5,000 sq. ft.
• electric heat
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Current RTF MeasuresCommercial Insulation
Insulation
TypeDetails
Building
Type
Heating
Zone
Savings
(kWh/sq. ft)
Cost
($/sq. ft)
Lifetime
(years)
TRC B/C with
6th Plan
Avoided Costs
Attic Office 1 3.38 $1.13 20 8.0
Attic Office 2 4.65 $1.13 20 10.9
Attic Office 3 5.61 $1.13 20 13.2
Attic Retail 1 3.45 $1.13 20 8.1
Attic Retail 2 5.04 $1.13 20 11.9
Attic Retail 3 5.89 $1.13 20 13.9
Floor Office 1 2.09 $0.62 20 9.0
Floor Office 2 2.78 $0.62 20 11.9
Floor Office 3 3.32 $0.62 20 14.2
Floor Retail 1 2.04 $0.62 20 8.7
Floor Retail 2 2.95 $0.62 20 12.7
Floor Retail 3 3.57 $0.62 20 15.3
Wall Office 1 1.47 $0.69 20 5.7
Wall Office 2 2.03 $0.69 20 7.8
Wall Office 3 2.44 $0.69 20 9.4
Wall Retail 1 1.95 $0.69 20 7.5
Wall Retail 2 2.67 $0.69 20 10.3
Wall Retail 3 3.24 $0.69 20 12.5
• R0 to R38
• <5,000 sq. ft.
• electric heat
• R0 to R30 (or to joist
height, if less)
• <5,000 sq. ft.
• electric heat
• R0 to R-15 (4" wall)
• R0 to R-21 (6" wall)
• R0 (or minimal) to R-11
•<5,000 sq. ft.
• electric heat
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Commercial Windows
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Regional Savings Potential
Relatively small total savings, but important for many small/rural utilities in the region•Post 2011 Small, rural, residential workgroup
Savings potential•6th Plan - Commercial Windows, Retrofits – 21 aMW• Navigant analysis of CBSA, assuming 10 kWh/sq. ft. – 17
aMW (to be discussed in the following slides)
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Different savings by building type, heating type, cooling type (specified per square foot of building space)
Includes variety of existing {single, double}, frame material 2/3 (21 aMW) from retrofit
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6th Plan Technical Potential
Building Type 20 Year 5 yearLarge Off 8.30 1.94 Warehouse 0.08 0.02 Other 1.73 0.39 OtherHealth 6.35 1.49 Small Box 1.77 0.39 Lodging 4.31 0.99 Small Off 3.45 0.77 Medium Off 2.05 0.45 Anchor 0.28 0.06 Assembly 0.28 0.06 High End 0.48 0.10 Supermarket 0.08 0.02 University 0.87 0.19 Hospital 0.19 0.04 Restaurant 0.46 0.10 K-12 0.32 0.07 MIniMart 0.12 0.02 Big Box 0.09 0.02 Total 31.23 7.11
Windows - Technical Potential aMW
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CBSA – Building Square FootageRegional building stock with single pane windows and electric heating
0
500,000
1,000,000
1,500,000
2,000,000
2,500,000
3,000,000
Regi
onal
Bui
ldin
g A
rea
(sq.
ft)
Building Type
1) Up to 5,000 sq. ft.
2) 5,001 to 10,000 sq. ft.
3) 10,001 to 20,000 sq. ft.
4) 20,001 to 50,000 sq. ft.
5) 50,001 to 100,000 sq. ft.
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CBSA – aMW Savings Potential
•Assuming 10 kWh / sq ft. of window, electric resistance heating (mid point of PTR savings)
•Savings scaled down for heat pumps•17.4 aMW (12.8 a MW excluding heat pumps)
Buildings with single pane windows and electric heating
1) Up to
5,000 sq. ft.
2) 5,001 to
10,000 sq. ft.
3) 10,001 to
20,000 sq. ft.
4) 20,001 to
50,000 sq. ft.
5) 50,001 to
100,000 sq.
ft.
6) 100,001 to
1,938,524
sq. ft.
Total
Dry Goods Retail 0.94 0.28 0.60 0.30 0.23 0.48 2.8
University 0.00 0.03 0.0
Other 3.42 0.53 1.02 0.41 0.43 0.12 5.9
Grocery 0.27 0.07 0.07 0.02 0.4
Office 0.86 0.19 0.75 0.58 0.37 0.56 3.3
Restaurant 0.25 0.28 0.5
Warehouse 0.42 0.46 0.18 0.19 0.12 1.4
Hospital 0.02 0.09 0.1
Other Health 0.30 0.33 0.25 0.9
Hotel/Motel 0.06 0.41 0.02 0.22 0.12 0.04 0.9
School 0.02 0.19 0.26 0.61 1.1
Total 6.5 2.1 2.9 2.2 1.7 2.0 17.4
Building Size
Building Type
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Savings Data SourcesMethod Scenario Savings Building Types Locations
PTR EZSim U 0.65 to U 0.34 7.2 to 13Small Office (1,100 sq. ft)
Small Retail (1,100 sq. ft)Heating Zone 1,2,3
NEEA / LBL DOE2 U 0.55 to U 0.30 4.3 to 8.8Small Office (5,500 sq. ft)
Large Office (103,000 sq. ft)Seattle, Boise
OR DOESimplified heat transfer
modelU 1.1 to U 0.35 12 to 20 ? OR
eQUEST (Navigant) eQUEST/DOE2 U 1.1 to U 0.30 3.8 to 9.2Offices (4,000 to 250,000 sq.
ft)Seattle, Spokane, Missoula
eQUEST (Navigant) eQUEST/DOE2 U 0.55 to U 0.30 1.1 to 4.4Offices (4,000 to 250,000 sq.
ft)Seattle, Spokane, Missoula
CA DEER only have savings for residential applications
Savings vary across modeling efforts, and are sensitive to model assumptions
Models suggest that savings vary by•building use •building size •climate zone
Window TypeHighest U-Value*
Single Pane, Clear 1.11Single Pane, Clear, Low-E 0.75Single Pane with storm windows 0.75Double Pane, Clear, air filled 0.56Double Pane, Clear, air filled, Low-E 0.5Double Pane, Clear, argon filled 0.45Double Pane, Clear, argon filled, Low-E 0.35
*Lower emissivity values and other design details can result in lower U-values
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Current PTR
Existing window type not specified in measure Analysis based on EZSim Modeling
• U0.65 to U0.34• small office and retail buildings (1,104 sq. ft.)
Measure DetailsBuilding
Type
Heating
Zone
Savings
(kWh/sq. ft)
Cost
($/sq. ft)
Lifetime
(years)
TRC B/C with
6th Plan
Avoided Costs
and 20 year
lifetime
Small Office 1 7.2 21.56 45 0.9
Small Retail 1 7.6 21.56 45 0.9
Small Office 2 9.9 21.56 45 1.2
Small Retail 2 11 21.56 45 1.4
Small Office 3 12 21.56 45 1.5
Small Retail 3 13 21.56 45 1.6
*Note: Energy Star Window criteria is now U0.30
Energy Star (U0.35) Prime
Window Replacement*
• <5,000 sq. ft.
• electric heat
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NEEA/LBNL
U0.55 to U0.30 Savings range for range of solar heat gain (SHG) and shading
scenarios Gas savings converted to electric savings by Navigant (assuming 95%
electric heat efficiency, 65% gas heat efficiency)
Reference“Analysis of window energy savings in commercial buildings in the Pacific Northwest”,Final Report LBNL-60379, prepared by Joe Huang an Mehry Yazdanian January, 2007 and data tables in .xls.
Seattle Boise
Small Office 4.3 to 4.9 5.6 to 6.1
Large Office 6.6 to 8.0 7.7 to 8.8
kWh/sq. ft savings
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eQUEST, CA Prototype BuildingskWh/ sq. ft. of window
U 1.09 (single-pane) to U 0.30
building
size (sq ft)Seattle Spokane Missoula
4,000 6.0 6.2 6.6
10,000 5.3 7.5 8.1
25,000 6.0 8.7 9.2
250,000 3.8 7.4 9.2
Location
U 0.55 to U 0.30
building
size (sq ft)Seattle Spokane Missoula
4,000 2.8 3.0 3.2
10,000 2.5 3.5 3.9
25,000 2.8 4.1 4.4
250,000 1.1 2.8 3.8
Location
Conducted by Navigant as part of this scoping analysis No adjustment of buildings to older NW building
characteristics Key points:
Savings persist for larger size buildings Savings for single pane to Energy Star are about twice as
large as savings for double pane (U0.55) to Energy Star
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OR DOE Tax Credit
Savings estimate: 12 to 20 kWh per sq. ft. Single pane (U 1.1) to U 0.35
Used simplified heat loss approach. Have not been able to find supporting analysis
Referenced in:“Commercial Windows Initiative, Market Progress Evaluation Report, No. 1”, Prepared by Heschong Mahone Group, Inc.Report #E05-137, March 23, 2005http://www.neea.org/research/reportdetail.aspx?ID=97
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Cost
Current deemed cost - $21.56/sq. ft•Data from 2007, 2008. Not adjusted to $2006•Based on residential costs•Recent Summit Blue/Navigant study of material
costs in NW agree well with deemed costs•Larger commercial projects may have lower costs
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Cost Proposal
$21.56 / square foot (residential cost) up to 650 sq. ft. of window (~10,000 sq. ft building).
$16.71 (75% of residential cost) for projects larger than 650 sq. ft.
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Cost Effectiveness Ranges
Using available data, consider the likely range of savings for varying existing window type, business type, size, and climate.
kWh/sq ft $16.71 $21.67
4 0.43 0.34
8 0.87 0.67
12 1.30 1.01
16 1.74 1.35
20 2.17 1.68
$/sq. ft
Method Scenario Savings Building Types Locations
PTR EZSim U 0.65 to U 0.34 7.2 to 13Small Office (1,100 sq. ft)
Small Retail (1,100 sq. ft)Heating Zone 1,2,3
NEEA / LBL DOE2 U 0.55 to U 0.30 4.3 to 8.8Small Office (5,500 sq. ft)
Large Office (103,000 sq. ft)Seattle, Boise
OR DOESimplified heat transfer
modelU 1.1 to U 0.35 12 to 20 ? OR
eQUEST (Navigant) eQUEST/DOE2 U 1.1 to U 0.30 3.8 to 9.2Offices (4,000 to 250,000 sq.
ft)Seattle, Spokane, Missoula
eQUEST (Navigant) eQUEST/DOE2 U 0.55 to U 0.30 1.1 to 4.4Offices (4,000 to 250,000 sq.
ft)Seattle, Spokane, Missoula
CA DEER only have savings for residential applications
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Proposed Next Steps For December 7th…
•Cost – keep existing costs•Savings - Use CBSA/EZSim to examine a range of building
type/size/climate based on today’s discussion•Group results as appropriate into measures
Building type/usage: Given the large potential for “Other” buildings, consider other options for categorization:• Categorize by hours of use (programmatically feasible?)• A single, weighted average savings for all building types• An “other” category, in addition to “office” and “retail”
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Commercial Insulation
AtticWallFloorFoundation perimeter (for slab-on-grade construction)
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Currently Deemed Savings
Based on EZSim modeling of small office and retail buildings (1,100 sq. ft)
No other data on commercial insulation measures found
Insulation
TypeDetails
Building
Type
Heating
Zone
Savings
(kWh/sq. ft)
Cost
($/sq. ft)
Lifetime
(years)
TRC B/C with
6th Plan
Avoided Costs
Attic Office 1 3.38 $1.13 20 8.0
Attic Office 2 4.65 $1.13 20 10.9
Attic Office 3 5.61 $1.13 20 13.2
Attic Retail 1 3.45 $1.13 20 8.1
Attic Retail 2 5.04 $1.13 20 11.9
Attic Retail 3 5.89 $1.13 20 13.9
Floor Office 1 2.09 $0.62 20 9.0
Floor Office 2 2.78 $0.62 20 11.9
Floor Office 3 3.32 $0.62 20 14.2
Floor Retail 1 2.04 $0.62 20 8.7
Floor Retail 2 2.95 $0.62 20 12.7
Floor Retail 3 3.57 $0.62 20 15.3
Wall Office 1 1.47 $0.69 20 5.7
Wall Office 2 2.03 $0.69 20 7.8
Wall Office 3 2.44 $0.69 20 9.4
Wall Retail 1 1.95 $0.69 20 7.5
Wall Retail 2 2.67 $0.69 20 10.3
Wall Retail 3 3.24 $0.69 20 12.5
• R0 to R38
• <5,000 sq. ft.
• electric heat
• R0 to R30 (or to joist
height, if less)
• <5,000 sq. ft.
• electric heat
• R0 to R-15 (4" wall)
• R0 to R-21 (6" wall)
• R0 (or minimal) to R-11
•<5,000 sq. ft.
• electric heat
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6th Power Plan Technical Potential
6th Plan only includes roof insulation in supply curves Roof insulation is not currently in PTR
Building Type 20 Year 5 yearLarge Off 13.49 2.46 Warehouse 7.28 1.33 Other 5.60 1.02 OtherHealth 0.72 0.13 Small Box 3.70 0.67 Lodging 0.50 0.09 Small Off 0.68 0.12 Medium Off 0.56 0.10 Anchor 1.86 0.34 Assembly 1.26 0.23 High End 0.92 0.17 Supermarket 1.25 0.23 University 0.33 0.06 Hospital 0.46 0.08 Restaurant 0.00 0.00 K-12 0.02 0.00 MIniMart 0.05 0.01 Big Box 0.01 0.00 Total 38.71 7.06
Roof Insulation - Technical Potential aMW
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Approach for Calculating Potential
Savings estimates all based on current PTR savings values expanded to buildings in CBSA database that were identified as applicable •Example:
−If building doesn’t have electric heating, not included−If concrete building, not considering wall insulation
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CBSA and RTF Analysis
Identify candidate buildings in CBSA for insulation retrofits Pre-1985 buildings only (more likely to be un-insulated) Electric-fuel heating (resistance, heat pump) only
CBSA does not indicate the presence or absence of insulation. CBECS for NW areas indicates that ~90% of pre-1985 buildings have
not had an insulation retrofit.
No air conditioning assumed in savings • The current RTF deemed numbers do not consider air conditioning
(applicable for buildings up to 5,000 sq ft).• This will be more of a factor for larger buildings.
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CBSA Potential Savings Summary
1) Up to
5,000 sq.
ft.
2) 5,001
to 10,000
sq. ft.
3) 10,001
to 20,000
sq. ft.
4) 20,001
to 50,000
sq. ft.
5) 50,001
to
100,000
sq. ft.
6)
100,001
to
1,938,524
sq. ft.
Total
Attic 13.07 5.44 5.09 3.25 2.25 2.23 31.3
Attic Upgrade 1.79 0.79 1.74 1.69 1.06 1.07 8.1
Wall 7.13 1.72 2.82 2.04 0.49 1.19 15.4
Floor 3.50 0.88 2.57 1.64 0.87 1.23 10.7
Foundation
Perimeter 0.40 0.13 0.21 0.10 0.05 0.03 0.9
Total 25.9 9.0 12.4 8.7 4.7 5.8 66.5
Building Size
Insulation Type
aMW retrofit technical potential, by building size
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CBSA Potential Savings Summary
AtticAttic
UpgradeWall Floor
Foundati
on
Perimeter
Total
Dry Goods Retail 6.12 1.57 2.06 2.88 0.13 12.8
University 0.01 0.02 0.00 0.01 0.00 0.0
Other 9.36 2.05 5.21 3.66 0.26 20.5
Vacant 0.00 0.00 0.00 0.00 0.00 0.0
Grocery 1.42 0.43 0.19 0.05 0.06 2.1
Office 5.02 1.48 2.87 2.44 0.12 11.9
Restaurant 0.91 0.13 0.07 0.04 0.04 1.2
Warehouse 1.26 0.56 0.76 0.44 0.06 3.1
Hospital 0.01 0.02 0.00 0.03 0.00 0.1
Other Health 1.75 0.36 1.55 0.63 0.06 4.3
Hotel/Motel 2.08 0.53 1.63 0.02 0.10 4.4
School 3.36 1.00 1.05 0.50 0.11 6.0
Total 31.3 8.1 15.4 10.7 0.9 66.5
Insulation Type
Building Type
aMW retrofit technical potential, by building type
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Attic Insulation Savings
R0 to R38 (RTF weatherization specs) 3.38 to 5.89 kWh/sq ft, depending on heating zone and {office,
retail}. •current deemed savings for commercial buildings up to
5,000 sq ft
R19 to R49 (RTF weatherization specs) Currently not a deemed commercial measure Approximately 1/3 of savings of R0 to R38, based on residential
deemed values• This suggests 1.1 to 1.9 kWh/sq ft savings
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Underfloor Insulation Savings
R0 to R30 (RTF weatherization specs) 2.0 to 3.7 kWh/sq ft, depending on heating zone and {office, retail}.
• current deemed savings for commercial buildings up to 5,000 sq ft
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Wall Insulation Savings
RTF Weatherization Specs:
R0 to R15 (4” unfinished wall) R21 (6” unfinished wall) R11 (exterior cavities, blown in)
1.5 to 3.2 kWh/sq ft savings
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Exterior Perimeter SavingsR0 to R10 (RTF Weatherization Specs)
Currently no deemed savings for this measure Assumed 1.0 kWh for this analysis
Savings from PNNL analysis for Montana• Office
−0.7 kWh/ft savings for heat, 0.2 kWh/ft increase for cooling• Gas Station/Retail
−2.2 kWh/ft savings for heat, 0.3 kWh/ft increase for cooling
Costs per linear foot range from $20 to $45, depending on excavation and refinish costs• Navigant survey of contractors throughout the NW
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Savings Summary
Current savings applies to small office and retail buildings, based on modeled 1,100 sq. ft buildings.
For larger buildings, internal heat loads and AC will reduce savings.
Savings also dependent on hours of use of space conditioning.
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Cost and Cost Effectiveness
Current PTR costs, based on residential projects
Insulation
TypeDetails
Building
Type
Heating
Zone
Savings
(kWh/sq. ft)
Cost
($/sq. ft)
Lifetime
(years)
TRC B/C with
6th Plan
Avoided Costs
Attic Office 1 3.38 $1.13 20 8.0
Attic Office 2 4.65 $1.13 20 10.9
Attic Office 3 5.61 $1.13 20 13.2
Attic Retail 1 3.45 $1.13 20 8.1
Attic Retail 2 5.04 $1.13 20 11.9
Attic Retail 3 5.89 $1.13 20 13.9
Floor Office 1 2.09 $0.62 20 9.0
Floor Office 2 2.78 $0.62 20 11.9
Floor Office 3 3.32 $0.62 20 14.2
Floor Retail 1 2.04 $0.62 20 8.7
Floor Retail 2 2.95 $0.62 20 12.7
Floor Retail 3 3.57 $0.62 20 15.3
Wall Office 1 1.47 $0.69 20 5.7
Wall Office 2 2.03 $0.69 20 7.8
Wall Office 3 2.44 $0.69 20 9.4
Wall Retail 1 1.95 $0.69 20 7.5
Wall Retail 2 2.67 $0.69 20 10.3
Wall Retail 3 3.24 $0.69 20 12.5
Also considered by Navigant…
Perimeter Office 3 0.70 $30.00 45 0.04
Perimeter Retail 3 2.20 $30.00 45 0.13
• R0 to R38
• <5,000 sq. ft.
• electric heat
• R0 to R30 (or to joist
height, if less)
• <5,000 sq. ft.
• electric heat
• R0 to R-15 (4" wall)
• R0 to R-21 (6" wall)
• R0 (or minimal) to R-11
•<5,000 sq. ft.
• electric heat
R0 to R10
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Proposal Keep current insulation costs for buildings under 10,000 sq ft.
• Discount costs by 25% for buildings 10,000 sq ft. and above Option 1: Apply current kWh/unit savings to building types identified
by CBSA•Analysis of very small buildings•Hasn’t been other analyses
Option 2: (recommended): Expand analysis that was done to larger building, keeping simple•Done through modeling, expanding on EZSim modeling done for
small buildings, −using CBSA for building and billing data−make reasonable assumptions about existing insulation levels
•Different savings number for different building sizes32
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Back Up Slides
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34
Analysis – Attic Insulation Unclear from CBSA which buildings have attics or other top-of-building space suitable for attic insulation
R0 to R38 (RTF weatherization specs) 3.38 to 5.89 kWh/sq ft, depending on heating zone and {office, retail}.
• current deemed savings for commercial buildings up to 5,000 sq ft Buildings prior to 1985 eligible.
R19 to R49 (RTF weatherization specs) Currently not a deemed commercial measure Approximately 1/3 of savings of R0 to R38, based on residential deemed values
• This suggests 1.1. to 1.9 kWh/sq ft savings Buildings prior to 2000 eligible.
School assumptions– 35% with un-insulated attics, 20% with moderately insulated attics, 45% without attics or already with good insulation
Small building (up to 2,000 sq ft) assumptions – 50% have attics, 20% of these already have some insulation 4% have more insulation than R19
Medium building (2,000 to 10,000 square feet) assumptions – 15% have attics, 20% of these already have some insulation 1% have attics with some insulation (<R20)
Large building (>10,000 square feet) assumptions 5% have suitable space for attic insulation, 20% of these already have some attic insulation <R20
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Analysis – Attic Insulation – R0 to R38
1) Up to
5,000 sq. ft.
2) 5,001 to
10,000 sq. ft.
3) 10,001 to
20,000 sq. ft.
4) 20,001 to
50,000 sq. ft.
5) 50,001 to
100,000 sq.
ft.
6) 100,001 to
1,938,524
sq. ft.
Total
Dry Goods Retail 1.84 0.95 1.16 0.73 0.46 0.97 6.1
University 0.00 0.01 0.00 0.00 0.00 0.00 0.0
Other 4.69 1.96 1.20 0.61 0.75 0.14 9.4
Vacant 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Grocery 0.63 0.00 0.57 0.09 0.12 0.00 1.4
Office 2.33 0.73 0.86 0.53 0.19 0.39 5.0
Restaurant 0.49 0.43 0.00 0.9
Warehouse 0.59 0.00 0.50 0.02 0.16 0.00 1.3
Hospital 0.00 0.00 0.00 0.00 0.00 0.01 0.0
Other Health 0.81 0.44 0.13 0.37 0.00 0.00 1.8
Hotel/Motel 0.05 0.91 0.67 0.30 0.08 0.07 2.1
School 1.62 0.01 0.00 0.60 0.49 0.64 3.4
Total 13.1 5.4 5.1 3.2 2.2 2.2 31.3
Building Type
Building Size
aMW retrofit technical potential, by building size and type
35
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
36
Analysis – Attic Insulation – R19 to R49aMW retrofit technical potential, by building size and type
1) Up to
5,000 sq. ft.
2) 5,001 to
10,000 sq. ft.
3) 10,001 to
20,000 sq. ft.
4) 20,001 to
50,000 sq. ft.
5) 50,001 to
100,000 sq.
ft.
6) 100,001 to
1,938,524
sq. ft.
Total
Dry Goods Retail 0.26 0.14 0.32 0.23 0.15 0.47 1.6
University 0.00 0.01 0.00 0.00 0.01 0.00 0.0
Other 0.58 0.24 0.35 0.51 0.31 0.05 2.1
Vacant 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Grocery0.10 0.00 0.15 0.11 0.07 0.00 0.4
Office 0.35 0.11 0.40 0.31 0.12 0.19 1.5
Restaurant 0.06 0.06 0.01 0.1
Warehouse 0.15 0.02 0.14 0.04 0.07 0.13 0.6
Hospital 0.01 0.00 0.00 0.00 0.00 0.01 0.0
Other Health 0.08 0.10 0.04 0.13 0.00 0.00 0.4
Hotel/Motel 0.01 0.09 0.23 0.12 0.06 0.02 0.5
School 0.19 0.01 0.09 0.23 0.27 0.20 1.0
Total 1.8 0.8 1.7 1.7 1.1 1.1 8.1
Building Type
Building Size
36
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
37
CBSA Potential:Attic Insulation Potential (aMW)
R0 to R39
R19 to 49
0
0.5
1
1.5
2
2.5
1 DGR 10 UNI
11 OTH
12 VAC
2 GRO 3 OFF 4 RES 5 WAR 6 HOS 7 OHE 8 HTM 9 SCH
aMW
Tec
hnic
al P
oten
tial
Building Type
1) Up to 5,000 sq. ft.
2) 5,001 to 10,000 sq. ft.
3) 10,001 to 20,000 sq. ft.
4) 20,001 to 50,000 sq. ft.
5) 50,001 to 100,000 sq. ft.
6) 100,001 to 1,938,524 sq. ft.0
1
2
3
4
5
6
7
1 DGR 10 UNI 11 OTH 12 VAC 2 GRO 3 OFF 4 RES 5 WAR 6 HOS 7 OHE 8 HTM 9 SCH
aMW
Tec
hnic
al P
oten
tial
Building TypeNote scale difference
Building Types1 DGR Dry Goods Retail2 GRO Grocery3 OFF Office4 RES Restaurant5 WAR Warehouse6 HOS Hospital7 OHE Other Health8 HTM Hotel/Motel9 SCH School10 UNI University11 OTH Other12 VAC Vacant
0
0.1
0.2
0.3
0.4
0.5
0.6
1 DGR 10 UNI 11 OTH 12 VAC 2 GRO 3 OFF 4 RES 5 WAR 6 HOS 7 OHE 8 HTM 9 SCH
aMW
Tec
hnic
al P
oten
tial
Building Type
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
38
Underfloor Insulation Potential Savings
R0 to R30 (RTF weatherization specs) 2.0 to 3.7 kWh/sq ft, depending on heating zone and {office, retail}.
• current deemed savings for commercial buildings up to 5,000 sq ft Not applicable to slab-on-grade construction Assumed all remaining building stock is eligible for this (0% saturation) 35% of buildings assumed to have technical constraints on
implementations. 10% of remaining building stock assumed to have already done this
measure
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
39
Analysis – Underfloor Insulation – R0 to R30aMW retrofit technical potential, by building size and type
1) Up to
5,000 sq. ft.
2) 5,001 to
10,000 sq. ft.
3) 10,001 to
20,000 sq. ft.
4) 20,001 to
50,000 sq. ft.
5) 50,001 to
100,000 sq.
ft.
6) 100,001 to
1,938,524
sq. ft.
Total
Dry Goods Retail 1.08 0.00 0.65 0.55 0.00 0.60 2.9
University 0.00 0.01 0.00 0.00 0.00 0.00 0.0
Other 1.18 0.38 1.13 0.74 0.22 0.01 3.7
Vacant 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Grocery 0.05 0.00 0.00 0.00 0.00 0.00 0.0
Office 1.02 0.23 0.41 0.31 0.20 0.26 2.4
Restaurant 0.00 0.04 0.00 0.0
Warehouse 0.00 0.00 0.15 0.00 0.29 0.00 0.4
Hospital 0.00 0.00 0.00 0.00 0.00 0.03 0.0
Other Health 0.17 0.22 0.23 0.00 0.00 0.00 0.6
Hotel/Motel 0.00 0.00 0.00 0.00 0.00 0.02 0.0
School 0.00 0.00 0.00 0.04 0.15 0.30 0.5
Total 3.5 0.9 2.6 1.6 0.9 1.2 10.7
Building Type
Building Size
39
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
40
Underfloor Insulation Potential (aMW)R0 to R30
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1 DGR 10 UNI 11 OTH 12 VAC 2 GRO 3 OFF 4 RES 5 WAR 6 HOS 7 OHE 8 HTM 9 SCH
aMW
Tec
hnic
al P
oten
tial
Building Type
1) Up to 5,000 sq. ft.
2) 5,001 to 10,000 sq. ft.
3) 10,001 to 20,000 sq. ft.
4) 20,001 to 50,000 sq. ft.
5) 50,001 to 100,000 sq. ft.
6) 100,001 to 1,938,524 sq. ft.
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
41
Walls – Savings Potential
RTF Weatherization Specs: R0 to R15 (4” unfinished wall) R21 (6” unfinished wall) R11 (exterior cavities, blown in)
1.5 to 3.2 kWh/sq ft savings Not applicable brick, concrete, or concrete block wall
surfaced Assumed 10% saturation of all remaining building stock
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
42
Analysis – Wall InsulationaMW retrofit technical potential, by building size and type
1) Up to
5,000 sq. ft.
2) 5,001 to
10,000 sq. ft.
3) 10,001 to
20,000 sq. ft.
4) 20,001 to
50,000 sq. ft.
5) 50,001 to
100,000 sq.
ft.
6) 100,001 to
1,938,524
sq. ft.
Total
Dry Goods Retail 1.13 0.14 0.40 0.26 0.00 0.13 2.1
University 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Other 2.76 0.92 0.57 0.69 0.17 0.08 5.2
Vacant 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Grocery 0.18 0.00 0.02 0.00 0.00 0.00 0.2
Office 1.01 0.25 0.78 0.22 0.03 0.57 2.9
Restaurant 0.07 0.00 0.00 0.1
Warehouse 0.12 0.00 0.33 0.14 0.17 0.00 0.8
Hospital 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Other Health 0.91 0.12 0.26 0.26 0.00 0.00 1.5
Hotel/Motel 0.06 0.27 0.45 0.43 0.11 0.31 1.6
School 0.89 0.02 0.00 0.05 0.00 0.10 1.0
Total 7.1 1.7 2.8 2.0 0.5 1.2 15.4
Building Type
Building Size
42
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
43
Wall Insulation Potential (aMW)R0 to R11
0
0.5
1
1.5
2
2.5
3
1 DGR 10 UNI 11 OTH 12 VAC 2 GRO 3 OFF 4 RES 5 WAR 6 HOS 7 OHE 8 HTM 9 SCH
aMW
Tec
hnica
l Po
tenti
al
Building Type
1) Up to 5,000 sq. ft.
2) 5,001 to 10,000 sq. ft.
3) 10,001 to 20,000 sq. ft.
4) 20,001 to 50,000 sq. ft.
5) 50,001 to 100,000 sq. ft.
6) 100,001 to 1,938,524 sq. ft.
Building Types1 DGR Dry Goods Retail2 GRO Grocery3 OFF Office4 RES Restaurant5 WAR Warehouse6 HOS Hospital7 OHE Other Health8 HTM Hotel/Motel9 SCH School10 UNI University11 OTH Other12 VAC Vacant
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
44
Exterior Perimeter
R0 to R10 (RTF Weatherization Specs)
Vertical insulation to exterior of perimeter foundation, 2’ below grade
Currently no deemed savings for this measure Savings from PNNL analysis for Montana
• Office 0.7 kWh/ ft savings for heat, 0.2 kWh/sq. ft. increase for cooling
• Gas Station/Retail 2.2 kWh/sq ft savings for heat, 0.3 kWh/sq. ft. increase for cooling
• Assumed 1.0 kWh for this analysis Costs for this measure are prohibitive because of the need
for excavation and refinishing
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
45
Analysis – Perimeter InsulationaMW retrofit technical potential, by building size and type
1) Up to
5,000 sq. ft.
2) 5,001 to
10,000 sq. ft.
3) 10,001 to
20,000 sq. ft.
4) 20,001 to
50,000 sq. ft.
5) 50,001 to
100,000 sq.
ft.
6) 100,001 to
1,938,524
sq. ft.
Total
Dry Goods Retail 0.01 0.03 0.05 0.02 0.01 0.01 0.1
University 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Other 0.16 0.04 0.03 0.01 0.02 0.00 0.3
Vacant 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Grocery 0.02 0.00 0.03 0.00 0.00 0.00 0.1
Office 0.04 0.01 0.04 0.02 0.00 0.01 0.1
Restaurant 0.02 0.01 0.00 0.0
Warehouse 0.03 0.00 0.03 0.00 0.00 0.00 0.1
Hospital 0.00 0.00 0.00 0.00 0.00 0.00 0.0
Other Health 0.03 0.01 0.00 0.02 0.00 0.00 0.1
Hotel/Motel 0.01 0.03 0.04 0.01 0.00 0.00 0.1
School 0.07 0.00 0.00 0.02 0.01 0.01 0.1
Total 0.4 0.1 0.2 0.1 0.0 0.0 0.9
Building Type
Building Size
45
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
46
Perimeter Potential (aMW)
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
1 DGR 10 UNI 11 OTH 12 VAC 2 GRO 3 OFF 4 RES 5 WAR 6 HOS 7 OHE 8 HTM 9 SCH
aMW
Tec
hnic
al P
oten
tial
Building Type
1) Up to 5,000 sq. ft.
2) 5,001 to 10,000 sq. ft.
3) 10,001 to 20,000 sq. ft.
4) 20,001 to 50,000 sq. ft.
5) 50,001 to 100,000 sq. ft.
6) 100,001 to 1,938,524 sq. ft.
Building Types1 DGR Dry Goods Retail2 GRO Grocery3 OFF Office4 RES Restaurant5 WAR Warehouse6 HOS Hospital7 OHE Other Health8 HTM Hotel/Motel9 SCH School10 UNI University11 OTH Other12 VAC Vacant
R0 to R10
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
CBSA “Other” Building Types
"Other" building types•Airline •Courthouse •Newspaper Publisher •Storage Places•Apartment •Day Care •Nusery •Swim Center•Assembly •Fairground •Other •Towing•Assisted Living •Fire Station •Parking Garage •Tractor Sales•Bowling •Florist •Police •Transit•Church •Funeral Home •Post Office •Visitor Center•Cleaners •Gymnasium •Prison •Wrecking•Clubs •Library •Publc Works•Communications Center•Maintainence •Public Works•Convention •Museum •Repair
47