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Achieving High Savings from Weatherization Programs

This session outline discusses the evaluation and assessment of weatherization programs, their goals, and strategies to achieve high savings. It also explores factors associated with high savings and highlights findings from program evaluations.

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Achieving High Savings from Weatherization Programs

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  1. Achieving High Savings from Weatherization Programs With New Evidence from The National WAP Evaluation Jackie Berger David Carroll ACI Mid-Atlantic Conference – October 2015

  2. Session Outline 2

  3. INTRODUCTION 3

  4. Weatherization Program Evaluation and Assessment 4

  5. Weatherization Program Goals 5

  6. Session Objectives 6

  7. Information Sources 7

  8. CONCEPTS 8

  9. Natural Gas Usage Definition of high usage varies by geography Mountain North Census Division 950 Therms Midwest Census Region 950 Therms Northeast Census Region 900 Therms Pacific Census Division 450 Therms South Census Region 600 Therms Mountain South Census Division 450 Therms 9

  10. Energy Program Savings Estimates 10

  11. Energy Savings A B 12 Months Pre-Wx Energy Usage Weather Normalize 12 Months Post-Wx Energy Usage Weather Normalize Wx Date A-B Gross Energy Savings C-D 1-12 Months Pre-Wx Energy Usage Weather Normalize 13-24 Months Pre-Wx Energy Usage Weather Normalize Comp. Group Wx Date Comp. Group Savings D C Net Savings Comparison Group Savings Gross Energy Savings C-D A-B 11

  12. Major Measures Measures for single family homes In order of average impacts in comprehensive program 12

  13. Major Measures Major Measures for Single Family Homes Refers to These Measures 13

  14. Average Measure SpendingWAP Programs SPENDING MAJOR MEASURES 2008 2010 Note: A home with 0 major measures may have air sealing, floor/rim/ foundation insulation, setback thermostat, duct sealing/insulation, other important measures. 14

  15. CONSISTENT FININGS FROM PROGRAM EVALUATIONS 15

  16. Increase Savings by … 16

  17. Intersection of… SUCCESS! 17

  18. FACTORS ASSOCIATED WITH HIGH SAVINGS: Targeting High Usage 18

  19. Treating High UsageAcross Program Analysis Seven low-income electric efficiency program evaluations over past eight years. Seven low-income gas efficiency program evaluations over past four years. 19

  20. Usage Impact Analysis National Weatherization Program Single Family Homes – Gas Savings 20

  21. State #1WAP Energy Impacts for Single Family Site-Built HomesNet Gas Savings for Natural Gas Main Heat by Pre-Weatherization Gas Usage (therms/year)

  22. State #2PY 2010 WAP Energy Impacts for Single Family Site-Built HomesNet Gas Savings for Natural Gas Main Heat by Pre-Weatherization Gas Usage (therms/year)

  23. FACTORS ASSOCIATED WITH HIGH SAVINGS: Install Major Measures 23

  24. Usage Impact Analysis National Weatherization Program Single Family Homes – Gas Savings 24

  25. State #1WAP Energy Impacts for Single Family Site-Built HomesGas Savings for Homes with Natural Gas Main HeatBy Measure Combination (therms/year)

  26. State #2PY 2010 WAP Energy Impacts for Single Family Site-Built HomesGas Savings for Homes with Natural Gas Main HeatBy Measure Combination (therms/year)

  27. FACTORS ASSOCIATED WITH HIGH SAVINGS: Agency Performance 27

  28. State #1Gas Impact Results by Agency for Gas Heated Single Family Site-Built Homes

  29. State #2 PY 2010 Gas Impact Results by Agency for Gas Heated Single Family Site-Built Homes (therms/year) *Agencies with less than 30 homes with energy savings results are not shown. but are included in the total savings figures.

  30. Factors by Savings Group 31

  31. State #3 32

  32. State by State Comparison 33

  33. Assessing Work qualityWAP FIELD STUDY 34

  34. WAP Field Study Focus 35

  35. WAP Field StudyMethodology 36

  36. WAP Field StudyMethodology 37

  37. WAP Field StudyMethodology 38

  38. WAP Field StudyMethodology 39

  39. WAP Field StudyData Collection 40

  40. WAP Field Study Data Collection Rating Design 41

  41. WAP Field StudyData Collection 42

  42. WAPAudit Strengths 43

  43. WAPAudit Opportunities 44

  44. WAP Communication of Audit Findings 45

  45. WAPAudit Findings Opportunities Strengths 46

  46. WAP Measure Installation Observation 47

  47. WAP Measure Installation Strengths 48

  48. WAP Measure Installation Mid-High Ratings 49

  49. WAP Measure Installation Opportunities 50

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