commercial windows and insulation

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


2

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


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

3


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

4


5

Commercial Windows


6

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)


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

7

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


8

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.

8


9

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

9


10

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



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


11

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


12

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


13

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


14

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


15

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


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.

16


17

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





CA DEER only have savings for residential applications


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”

18


19

Commercial Insulation

AtticWallFloorFoundation perimeter (for slab-on-grade construction)


20

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


height, if less)

• <5,000 sq. ft.

• electric heat

• R0 to R-15 (4" wall)

• R0 to R-21 (6" wall)


•<5,000 sq. ft.

• electric heat


21

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


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

22


23

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.


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

24


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

25


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

26


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

27


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

28


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

29


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.

30


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


height, if less)

• <5,000 sq. ft.

• electric heat

• R0 to R-15 (4" wall)

• R0 to R-21 (6" wall)


•<5,000 sq. ft.

• electric heat

R0 to R10

31


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


Back Up Slides

33


34

Analysis – Attic Insulation Unclear from CBSA which buildings have attics or other top-of-building space suitable for attic insulation


• 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

34


35

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


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


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


aMW

Tec

hnic

al P

oten

tial

Building Type

dng6482

summary tables


38

Underfloor Insulation Potential Savings


• 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


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


40

Underfloor Insulation Potential (aMW)R0 to R30

0

0.2

0.4

0.6

0.8

1

1.2

1.4


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.


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


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


43

Wall Insulation Potential (aMW)R0 to R11

0

0.5

1

1.5

2

2.5

3


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.



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


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


46

Perimeter Potential (aMW)

0

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0.16

0.18


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.


R0 to R10


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

commercial windows and insulation

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