GDS Associates, Inc. • 1181 Elm Street • Suite 205 • Manchester, NH 03101 • www.gdsassociates.com

Marietta, GA • Austin, TX • Auburn, AL • Manchester, NH • Madison, WI • I ndianapolis, IN • Augusta, ME 

# Additional Opportunities for
Energy Efficiency in New Hampshire

Final Report – January 2009

Prepared for the

New Hampshire Public Utilities Commission

Prepared and Submitted by:

In partnership with


# RLW Analytics and Research Into Action

With Telephone Survey Support Provided by



# RKM Research and CommunicationFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. Page i 

## ACKNOWLEDGEMENTS

This report was prepared for the New Hampshire Public Utilities Commission (NHPUC) by GDS Associates, Inc. with substantial data collection and analysis assistance provided by RLW Analytics, Research Into Action, and RKM Research and Communications (collectively, the GDS Team). The GDS Team would like to acknowledge the many helpful data sources and the technical input provided by the NHPUC, the New Hampshire electric and gas utility sponsors and the Office of the Consumer Advocate. GDS would like to give special recognition to Tom Frantz, Anne Ross and Commissioner Clifton Below all of the NHPUC, and Gil Gelineau and Tom Belair (PSNH), Derek Buchler (Northern Utilities), Lisa Glover (Unitil), David Jacobson (National Grid), Carol Woods (NHEC), Stephen Eckberg (NH OCA), and Tom Rooney and Eric Readdy of TRC Companies, Inc., all of whom were instrumental in providing insights and information and reviewing detailed plans, data collection instruments and inputs and results from analyses developed by the GDS Team including electric and gas load forecasts, energy efficiency measures , costs, energy savings, useful lives, saturation levels and remaining potential estimates.

This report provides valuable and up-to-date electric and natural gas (and associated propane and oil) energy efficiency potential savings information for New Hampshire’s regulators and utility decision-makers. It will also be useful to electric and gas energy efficiency program designers and implementers and for others who may need a templatefor their own energy efficiency potential studies. This report includes a thorough and upto-date assessment of the impacts that ener gy efficiency measures and programs can have on electricity and gas, propane and oil use in New Hampshire. Clearly there remains a significant amount of cost effective energy savings potential to be tapped

within the state.



## NOTICE

This report was prepared by GDS Associates, Inc., in the course of performing work contracted for and sponsored by the New Hampshire Public Utilities Commission, with review participation by National Grid (electric and gas), the New Hampshire Electric Cooperative, Northern Utilities, Public Service Company of New Hampshire, and Unitil Energy Services (hereinafter the “Sponsors”). The opinions expressed in this report do not necessarily reflect those of the Sponsors or the State of New Hampshire, and reference to any specific product, service, process, or method does not constitute an implied or expressed recommendation or endorsement of it. Further, the Sponsors, the State of New Hampshire, and the contractor make no warranties or representations, expressed or implied, as to the fitness for particular purpose or merchantability of any product, apparatus, or service, or the usefulness, completeness, or accuracy of any processes, methods, or other information contained, described, disclosed, or referred to in this report. The Sponsors, the State of New Hampshire, and the contractor make no representation that the use of any product, apparatus, process, method, or other information will not infringe privately owned rights and will assume no liability for any loss, injury, or damage resulting from, or occurring in connection with, the use of information contained, described, disclosed, or referred to in this report.

Scott M. Albert, Principal & Northeast Region Manager GDS Associates, Inc., January 2009Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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# Table of Contents

Page Number



## Section 1: Executive Summary .................................................................................... 1

1.1 Study Sc ope ................................................................................................................... ....... 1

1.2 Results O verview .............................................................................................................. .... 5

1.3 Potentially Obtainab le Scenar io ........................................................................................ 17

1.4 Implementati on Costs ........................................................................................................ 1 8

1.5 Market-Driven vs. Retrofit .................................................................................................. 1 8

1.6 Customer Participat ion and Ba rriers ................................................................................ 19

1.7. Past/Current Program Capt ure and Recomme ndations .................................................. 20

1.8 Structure of this Re port

...................................................................................................... 22



## Section 2: Characterization of Customer Base, Electric and Natural Gas Usage, and Load Forecasts for the State of New Hampshire ............... 23

2.1 New Hampshire Geographic and De mographic Charact eristics .................................... 23

2.2 New Hampshire Economic and Dem ographic Charact eristics ....................................... 25

2.3 Forecasted Electricity and Natural Gas Sales in Ne w Hampsh ire .................................. 28



## Section 3: Overall Project Implementation Approach ............................................. 34

3.1 Energy Using Equipment Saturations a nd Efficiency Penetrat ions Analysis ............... 34

3.2 Measures List Developmen t .............................................................................................. 44

3.3 Customer Program Participat ion Rates and Barrier s ...................................................... 47

3.4 Forecast Model of State Electri city and Natural Gas Cons umption and Peak Demand 57

3.5 Estimates of 10-Year Technical, Maximu m Achievable, Maximum Achievable Cost

Effective Potentials and Poten tially Obtainable Scenario ............................................... 58

3.6 Assessment of Past and Current Program Capture and Reco mmendations ................ 65



## Section 4: Residential Sector Energy Efficiency Potential ..................................... 66

4.1 Residential Sector Saving s Methodology O verview ........................................................ 67

4.2 Residential Sector – Energy E fficiency Potent ial Results ............................................... 69



## Section 5: Commercial Sector Energy Efficiency Potential .................................... 87

5.1 Commercial Sector Savings Methodology O verview ...................................................... 88

5.3 Commercial Sector E nd-Use Breakd owns ....................................................................... 92

5.4 Commercial Sector – Energy Ef ficiency Potentia l Results ............................................. 92Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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## Section 6: Industrial Sector Energy Efficiency Potential ...................................... 107

6.1 Industrial Sector Savings Methodology O verview ......................................................... 108

6.2 Industrial Sector Segmentati on ....................................................................................... 110

6.3 Industrial Sector E nd-Use Break downs .......................................................................... 111

6.4 Industrial Sector – Energy Effi ciency Potential Results ................................................ 113



## Section 7: Primary Data Collection Highlights ....................................................... 115

7.1 Data Summary a nd Analysi s ............................................................................................ 116

7.2 Application of Survey Da ta .............................................................................................. 119

7.3 Summary and Reco mmendations ................................................................................... 125



## Section 8: Past Program Capture and Recommendations ................................... 127

8.1 Electric Utility Energy Efficiency Pr ograms ................................................................... 128

8.2 Gas Efficiency Programs ................................................................................................. 132

8.3 Summary and Reco mmendations ................................................................................... 135



# List of Appendices

Appendix A – Residential Sector Telephone Survey

Appendix B – Small Commercial/Industrial Sector Telephone Survey

Appendix C – On-Site Data Collection Instrument for Larger Commercial and Industrial Sector

Appendix D – PUC advance letter and GDS Team’s recruiting script

Appendix E – Residential electric and non-electric measures, assumptions and sources

Appendix F – Commercial electric and non-electric measures, assumptions and sources

Appendix G – Industrial electric and non-electric measures, assumptions and sources

Appendix H – Benefit/Cost Model Key Inputs and Assumptions

Appendix I – Good/Better/Best Measures and Cost Scenarios

Appendix J – Phone Surveys and Site Visit Demographics

Appendix K – Residential Sector Base and Remaining Factors Derivations

Appendix L – Commercial Sector Base and Remaining Factors Derivations

Appendix M – Industrial Sector Factors DerivationsFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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# List of Tables

Page Number Table 1. Summary of Energy Savings Potentials by 2018 – Combined Electric and Non-Electric Measures 7

Table 2. Summary of Energy Savings Potentials by 2018 – Electric 8

Table 3. Summary of Energy Savings Potentials by 2018 – Non-Electric 9

Table 4. Summary of Energy Savings Potentials by 2018 – Natural Gas 10

Table 5. Additional Energy Efficiency Opportunities Potential by 2018 - Breakdown by Utility – Electric 16

Table 6. Additional Energy Efficiency Opportunities Potential by 2018 - Breakdown by Utility – Nat Gas 17

Table 7. Cumulative Annual Program Savings as Percent of 2008 Sales: 2002-2008 – Electric 20

Table 8. Cumulative Annual Program Savings as Percent of 2008 Sales: 2003-2008 – Natural Gas 20

Table 9. Total Customer Counts – Residential, Low Income NH Electric and Natural Gas Utilities 25

Table 10. Total Customer Counts – Small No n-Residential NH Elect ric and Gas Utilities 26

Table 11. Customer Count of Large C&I Population Summary (Number of Accounts) 27

Table 12. Electric Energy Consumption of Large C&I Population Summary (kWh - 2007) 27

Table 13. Residential Sector Building Types and Energy Using Equipment 35

Table 14. Commercial Sector Building Types and Energy Using Equipment 35

Table 15. Industrial Sector Business Types and Energy Using Equipment 36

Table 16. Sample Quotas - Reside ntial NH Electric and Gas Utilities 38

Table 17. Sample Quotas – Small C/I NH Electric and Gas 38

Table 18. Disposition of Residential Survey 38

Table 19. Disposition of Small Commercial/Industrial Survey 39

Table 20. Large C&I Population Summary (Accounts) 40

Table 21. Large C&I Population Summary (kWh) 40

Table 22. Large C&I Accounts by Sponso r and by Commercial versus Industrial 41

Table 23. Large C&I Sample Design 42

Table 24. Measure End Uses and Number of Measures Per End Use – Residential 45

Table 25. Measure End Uses and Number of Measures Per End Use - Commercial 45

Table 26. Measure End Uses and Number of Measures Per End Use - Industrial 45

Table 27. Measure End Uses and Number of Measures Per End Use - Residential 46

Table 28. Measure End Uses and Number of Measures Per End Use - Commercial 46

Table 29. Measure End Uses and Number of Measures Per End Use - Industrial 46

Table 30. Attention Paid to Controlling Household Energy Costs 47

Table 31. Likelihood of Purchasing Energy Efficient Equipment 48

Table 32. Primary Reasons for Not Purchasing E fficient Equipment/Making Efficiency Improvements 48

Table 33. Awareness of Utility’s Energy Efficiency Programs 49

Table 34. Participation in Utility’s Energy Efficiency Programs 49

Table 35. Possible Reasons for Not Partic ipating in an Energy Efficiency Program 50

Table 36. Respondent Characteristics Summary 52

Table 37. Awareness of Existing Energy Efficiency Programs and Incentives 53

Table 38. Participation in Utility’s Energy Efficiency Programs 54

Table 39. Attention Paid to Co ntrolling Company Energy Costs – Sm all/Large Respondents Combined 55Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. Page v Table 40. Likelihood of Purchasing Energy Efficient Equipment 56

Table 41. Primary Reasons for Not Purchasing Equipment/Making Improvements – Small/Large 57

Table 42. Summary of Residential Electric Energy Efficiency Savings Potential 66

Table 43. Summary of Residential Non-Elect ric Energy Efficiency Savings Potential 66

Table 44. Residential Electric Energy Efficiency Savings Potential by Measure 71

Table 45. Residential Non-Electric Energy Efficiency Savings Potential by Measure 73

Table 46. Summary of Commercial Sector El ectric Energy Efficiency Savings Potential 87

Table 47. Summary of Commercial Non-Elec tric Energy Efficiency Savings Potential 88

Table 48. Commercial Sector Segmentation by Industry Type - Electric 91

Table 49. Commercial Sector Segmentation by Industry Type – Non-Electric 91

Table 50. Commercial Sector End Use Breakdowns Allocation Table – Electric 92

Table 51. Commercial Sector End Use Br eakdowns Allocation Table – Non-Electric 92

Table 52. Commercial Electric Savings Potential by Measure – Existing Buildings 95

Table 53. Commercial Electric Savings Potential by Measure – New Construction 97

Table 54. Commercial Non-Electric Savings Pote ntial by Measure – Existing Construction 99

Table 55. Commercial Non-Electric Savings Potential by Measure – New Construction 100

Table 56. Summary of Industrial Sector El ectric Energy Efficiency Savings Potential 107

Table 57. Summary of Industrial Sector No n-Electric Energy Efficiency Savings Potential Error! Bookmark not defined.

Table 58. Industrial Sector Segmentation by Industry Type - Electric 110

Table 59. Industrial Sector Segmentati on by Industry Type – Non-Electric 110

Table 60. Industrial Sector End Use Breakdowns by Industry Type – Electric 112

Table 61. Industrial Sector End Use Br eakdowns by Industry Type – Non-Electric 112

Table 62. Number of Commercial a nd Industrial Facilities Surveyed 117

Table 63. Small Commercial vs. Large Commercial Surveys by Building Type 117

Table 64. Small Industrial vs. Large Industrial Surveys by Building Type 118

Table 65. Industrial Electric End-Uses Informed by Primary Data 124

Table 66. Industrial Non-Electric End-Uses Informed by Primary Data 125

Table 67. Energy Efficiency Program Savings as Percent of 2008 Sales: 2002-2008 – Electric Utilities 128

Table 68. Energy Efficiency Program Savings as Percent of 2008 Sales: 2003-2008 – Nat Gas Utilities 128

Table 69. New Hampshire Electric Utility Core and Additional Programs 129

Table 70. Customer Served Through Utility HES and HEA Programs: 2005-2008 129

Table 71. Percent of Customers Aw are of Utility Efficiency Programs 130

Table 72. Residential Measures Not Included in Current Programs 131

Table 73. Commercial/Industrial Measur es Not Included in Current Programs 132

Table 74. Gas Efficiency Programs Evaluated 132

Table 75. Customer Served Through Natural Gas Utility Programs: 2005-2008 134

Table 76. Measures Not Included in Cu rrent Natural Gas Efficiency Programs 135Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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# List of Figures

Page Number Figure 1. Residential Electric Energy Efficiency Maximum Achievable Cost Effective – by End Use 11

Figure 2. Residential Non-Electric Efficiency Maximum Achievable Cost Effective – by End Use 12

Figure 3. Max Achievable Cost Effective Electric S avings by End Use for Commercial Existing Buildings 13

Figure 4. Max Achievable Cost Effective Electric Savings by End Use for Commercial New Construction 13

Figure 5. Max Achievable Cost Effective Non-Electric Savings by End Use -Commercial Existing Buildings 14

Figure 6. Max Achievable Cost Effective Non-Electri c Savings by End Use -Comme rcial New Construction 14

Figure 7. Max Achievable Cost Effective Electric Savings by End Use for NH Industrial Sector 15

Figure 8. Max Achievable Cost Effective Non-Elect ric Savings by End Use for NH Industrial Sector 15

Figure 9. New Hampshire Map 24

Figure 10. Forecasted Electric GWH Sales Total (2008 – 2018) - from Utility Data vs. ISO-NE Projections 29

Figure 11. Forecasted Electric GWH Sales By Sector (2008 – 2018) 29

Figure 12. Forecasted Electric Demand (MW) Tota l 2008 – 2018 - Utility Data vs. ISO-NE Projections 30

Figure 13. Forecasted Electric Demand (MW) By Sector 2008 – 2018 31

Figure 14. Forecasted Natural Gas MMBTu Sales Tota l (2008 – 2018) - Utility Projections vs. EIA Data 32

Figure 15. Forecasted Natural Gas MMBTu Sales By Sector (2008 – 2018) 32

Figure 16. Venn Diagram of the St ages of Energy Savings Potential 60

Figure 17. Residential Sector Savings Methodology – Bottom Up Approach 67

Figure 18. Residential Electric S avings Potential Results Comparison 75

Figure 19. Residential Non-Electric Savings Potential Results Comparison 75

Figure 20. Residential Max. Achievable Cost E ffective Electric Savings Potential by End Use 76

Figure 21. Residential Max Achievable Cost Effect ive Non- Electric Savings Potential by End Use 77

Figure 22. Residential Electric Savings Potential by End Use (with kWh values) 78

Figure 23. Residential Non-Electric Savings Potential by End Use (with MMBTu values) 79

Figure 24. Residential Electric Energy Efficiency Supply (< $1.10/kWh) Curve for NH – Tech Potential 80

Figure 25. Residential Electric Energy Efficiency Supply (< $0.10/kWh) Curve for NH – Tech Potential 81

Figure 26. Residential Electric Energy Efficiency S upply (< $1.10/kWh) Curve for NH – Max Achievable 81

Figure 27. Residential Electric Energy Efficiency S upply (< $0.10/kWh) Curve for NH – Max Achievable 82

Figure 28. Residential Electric Energy Efficiency Supply (< $1.10/kWh) Curve for NH – M.A.C.E 82

Figure 29. Residential Electric Energy Efficiency Supply (< $0.10/kWh) Curve for NH – M.A.C.E. 83

Figure 30. Residential Non-Electric Energy Effi ciency Supply (< $10/MMBTu) Curve for NH – Technical 83

Figure 31. Residential Non-Electric Energy Effi ciency Supply (< $5/MMBTu) Curve for NH – Technical 84

Figure 32. Residential Non-Electric Efficiency Supply (< $10/MMBTu) Curve for NH – Max Achievable 84

Figure 33. Residential Non-Electric Efficiency Supply (< $5/MMBTu) Curve for NH – Max Achievable 85

Figure 34. Residential Non-Electric Energy Effi ciency Supply (< $10/MMBTu) Curve for NH – M.A.C.E 85Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. Page vii Figure 35. Residential Non-Electric Energy Effi ciency Supply (< $5/MMBTu) Curve for NH – M.A.C.E. 86

Figure 36. Commercial Sector Savings Methodology – Top Down Approach 88

Figure 37. Commercial Sector Segmentation by Industry Type - Electric 91

Figure 38. Commercial Sector Segmentation by Industry Type – Non-Electric 92

Figure 39. Commercial Electric Max. Achievable Cost Effective Savings By End Use – Existing 101

Figure 40. Commercial Electric Max. Achievable Cost Effective Savings By End Use – New 101

Figure 41. Commercial Max. Achievable Cost Effect ive Non-Electric Savings By End Use – Existing 102

Figure 42. Commercial Max. Achievable Cost Effective Non-Electric Savings By End Use – New 102

Figure 43. Commercial Electric Supply Curve: Existing Buildings – Technical Potential Scenario 103

Figure 44. Commercial Electric Supply Curve: Existing Buildings – Max. Maximum Achievable 103

Figure 45. Commercial Electric Supply Curve: Existi ng Buildings – Max. Achievable Cost Effective 103

Figure 46. Commercial Electric Supply Curve: New Buildings – Technical Potential Scenario 104

Figure 47. Commercial Electric Supply Curve: New Buildings – Max. Achievable 104

Figure 48. Commercial Electric Supply Curve: Ne w Buildings – Max. Achievable Cost Effective 104

Figure 49. Commercial Non-Electric Supply Cur ve: Existing Buildings – Technical Potential 105

Figure 50. Commercial Non-Electric Supply Cu rve: Existing Buildings – Max. Achievable 105

Figure 51. Commercial Non-Electric Supply Curve: Existing Buildings – Max. Achievable Cost Effective 105

Figure 52. Commercial Non-Electric Supply Cu rve: New Buildings – Technical Potential 106

Figure 53. Commercial Non-Electric Supply Curve: New Buildings – Max. Achievable 106

Figure 54. Commercial Non-Electric Supply Curve: New Buildings – Max. Achievable Cost Effective 106

Figure 55. Industrial Sector Savings Methodology – Top Down Approach 108

Figure 56. Industrial Max. Achievable Cost Effective Electric Savings by End Use 113

Figure 57. Industrial Max. Achievable Cost Effective Non-Electric Savings by End Use 113

Figure 58. Industrial Max. Achievable Cost Effective Electric Savings by Building Type 114

Figure 59. Industrial Max. Achievable Cost Eff ective Non-Electric Savings by Building Type 114Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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# Section 1: Executive Summary

This study presents results from an evaluation of additional opportunities for energy efficiency in New Hampshire. Estimates of technical potential, maximum achievable potential, and maximum achievable cost effective potential by the year 2018 (a 10-year period) are provided for electricity, natural gas and related propane and fuel oil savings at the state level and for each of the four New Hampshire retail electricity providers and two natural gas distribution companies. Results from a potentially obtainable savings scenario are also presented to estimate that portion of the cost effective potential that might be achievable after consideration of customer behavior. Finally, estimates are pres ented of the installed costs required to achieve resulting savings for each scenario (excluding costs for marketing, program design and administration)

All results were developed using customized residential, commercial and industrial sector-level energy efficiency potential assessment models and New Hampshire Public Utilities Commission (NHPUC)-specified cost-effectiveness criteria 1 

### including the region’s most recent avoided energy cost projections. 2 

### To help inform these models, actual electric and gas utility customer information was collected through a combination of telephone surveys with residential and small commercial/industrial customers and site visits at larger commercial and industrial facilities. Work was conducted by GDS Associates, Inc. wi th important input and assistance provided by RLW Analytics, Research Into Action and RKM Research and Communications (the GDS Team).

Technical potential studies need to be understood and viewed as a highly theoretical construct/tool – therefore, the data used for this report was based on the best data available at the time the models were run – when better data was identified, it was used where possible, but given the demands and limits of time for this proj ect, it is possible that some sources were

overlooked.



## 1.1 Study Scope

The objective of this study was to evaluate additional opportunities for energy efficiency in New Hampshire to provide insights for continued electric and gas utility program filings and implementation plans and to inform expanded pl anning for energy efficiency programs that may rise from New Hampshire’s participation in the Regional Greenhouse Gas Initiative and the recommendations of the NH Climate Change Policy Task Force. Following is a listing and a brief overview of the approach undertaken to complete each of the major tasks required for this study effort:

1 The NHPUC’s total resource cost effectiveness test (TRC) derives from the 7/6/99 report from the NH Energy Efficiency Working Group (pp. 14-1 8) in DR 96-150, available at: www.puc.nh.gov/Electric/96-150%20%20NH %20Energy%20Efficiency%20Working%20Group%20Final%20Report%20(1999).pdf , and was modified by Attachment C of the 2008 Core Energy Efficiency filing approved by Order No. 24,815 in DE 07-106 that provided that “[t]he use of the 15% adder to represent environmental and other benefits as recommended by the [NHEEWG] ...was discontinued because the 2007 AESC avoided costs include market-based price proxies for power plant emission of NOx, SO2, Mercury and CO2.”

2 Avoided Energy Supply Costs in New England: 2007 Final Report , August 10, 2007, prepared by Synapse Energy
Economics, Inc., available at: www.synapse-energy.com/Downloads/S ynapseReport.2007-08.AESC.AvoidedEnergy-Supply-Costs-2007.07-019.pdf

.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### Analyze current saturations of energy using equipment and penetrations of energy efficiency equipment and practices in each end-use category. This task was completed through analysis of a combination of primary and secondary data sources including carefully designed questions and a statistically valid sample of telephone surveys and site visits.

Produce an up-to-date list of currently available and soon to be commercially available technologies which may play a part in future efficiency programs – This task was based initially on existing GDS databases of sector-s pecific electricity and natural gas end-use technologies and efficiency measures. It was extensively supplemented to include other technology areas of interest to the New Hampshire Public Utilities Commission, the New Hampshire Office of the Consumer Advocate, and the four electric and two natural gas utilities supporting this project.

Estimate customer participation rates/levels by program, based on different payback/incentive levels and define/analyze significant barriers that customers face when investing in additional energy efficiency – This task was based on results from the GDS Team’s phone surveys and site visits. Where insufficient customer-specific data was available, these estimates were informed through the project sponsors’ and Team’s combined existing and extensive knowledge of not only NH’s current electric/gas utility programs, but also best practices and barriers associated with programs being implemented elsewhere in the region and throughout the country.

Develop, by sector, a simplified end-use model of state electricity and natural gas consumption and peak demand – This task was completed using data provided directly by each participating New Hampshire electric and gas utility. Results were assessed against forecasts published through the New England Power Pool (NEPOOL) and ISO-New England,

Inc. to ensure reasonableness.

Estimate, state-wide and for each of the four New Hampshire retail electricity providers and two natural gas distribution companies, the technical, maximum achievable, maximum achievable cost effective potential, and a potentially obtainable scenario, for electricity, natural gas and related propane and fuel oil savings over the next 10-year period, and the budgets (where appropriate) required to achieve that potential – These activities were based on the GDS Team’s existing sector-level supply curve and potential analysis models, NHPUC cost-effectiveness criteria/methodologies and associated up-to-date assumptions 3 

### including the region’s current avoided energy cost projections, elements of which were already in hand. Wherever possible, thes e models were customized based on state utilityspecific data and the saturation and penetration survey results obtained through this project’s primary data collection (telephone survey and site visit) activities. All results were analyzed and compared for reasonableness against overall state consumption and consideration of past New Hampshire utility energy efficiency program participation.

3 The measure specific savings values used to develop the following estimates of technical potential vary considerably in the level of certaint y. Some measures. such as commercial lighting. have a long history of implementation and have fairly well documented costs and savings while some measures which also show large potential, such as retro-commissioning, have had little large scale implementation to date and estimates of their savings and cost effectiveness are based on a limited number of real world installations. Other high potential measures, such as floating head pressure controls have tend ed to work well in the short term but are often overridden by on-site maintenance personnel who are not comfortable with running their systems at lower pressures. It is important for anyone using this study to set actual program budget and savings targets to further refine the less certain estimates before starting large scale implementation of such measures.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### Evaluate extent to which past and current energy efficiency programs have achieved energy savings to date, provide sensitivity analysis of realized energy savings based on different resource levels (including absence of current SBC-funded model), and recommend modifications to program and measure offerings that would increase the likelihood of achieving identified potential – These activities were based on a combination of factual data comparisons, analysis of survey re sults associated with end-use customer sector barriers identification, the collective GDS Team’s experience with looking at programs from a logic-modeling perspective, and the GDS Team’s ex tensive knowledge of other local, regional and national programs and best practices. 4 

### Focus of these evaluations and sensitivities were at the statewide level (vs. utility-specific).

More information on each of these items is presented in the methodologies and subsequent sections of this report.

The definitions used in this study for energy efficiency potential estimates are as follows:

• Technical potential is defined in this study as the complete and immediate penetration of all measures analyzed in applications w here they were deemed technically feasible from an engineering perspective. For the residential sector, two technical potential scenarios were developed: a technical potential (best) scenario, where “best” options are assumed to be installed in situations where “good/better/best” options exist; and a technical potential (traditional) scenario, where “good/better/best” options are allocated for model installation across applicable populations.

• Maximum Achievable potential is defined as the maximum penetration of an efficient measure that would be adopted absent consideration of cost or customer behavior. The term "achievable" refers to efficiency measure penetration, based on estimates of New Hampshire-specific building stock, energy using equipment saturations and realistic efficiency penetration levels that can be achieved by 2018 if all remaining standard efficiency equipment were to be replaced on burnout (at the end of its useful measure life) and where all new construction and major renovation activities in the state were done using energy efficient equipment and construction/installation practices. In certain circumstances, where early replacement of specific measures is becoming standard practice, maximum achievable potential includes the retrofit of measures before the end of their useful measure life (i.e., T8 lighting, thermostats, insulation and weatherization of existing homes).

• Maximum Achievable Cost Effective (M.A.C.E.) potential is defined as the portion of the maximum achievable potential that is cost effective according to the economic criteria currently used to determine energy efficiency program cost-effectiveness (New Hampshire Public Utility Commission’s approved Total Resource Cost Test – NH TRC), before consideration of customer behavior. Application of the TRC test is based on the

4 Assessments based on a logic-modeling perspective recognize current program resources (dollars, staffing, etc.) and activities (measure installations, promotional rebates/in centives, marketing/outreach, education/training, etc.) and seek to identify their causal links to anticipated outputs (measures installed, in-program energy and capacity savings, # of customers served, market actors trained, etc.), short-, intermediate- and long-term outcomes (changes
in awareness and behavior, market-wide/sustainable ener gy, economic and environmental benefits, etc.). In addition, logic models recognize the existence and potential impacts of external influences (price of energy, state of the local and regional economy, federal tax incentiv es, other non-program sponsored activities, etc.).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### latest values for avoided cost (electric, natural gas and other fuels) and excludes environmental externalities not already capt ured with avoided cost values, consistent with current utility and PUC procedures.

• Potentially Obtainable scenario is a new output developed for this study 5 

### and can be defined as an estimate of the potential for the realistic penetration over time of energy efficient measures that are cost effective according to the NH TRC, taking customer behavior into consideration (including consideration of priorities and price). To achieve this potential, a concerted, sustained campaign involving aggressive programs and market interventions would be required. As demonstrated later in this report, the State of New Hampshire and its electric and gas utilities would need to continue to undertake, and perhaps aggressively expand its efforts to achieve these levels of savings.

LIMITATIONS TO THE SCOPE OF STUDY As with any assessment of energy efficiency potential, this study necessarily builds on a large number of assumptions, from average measure lives, savings and costs, to the discount rate for determining the net present value of future savings. The RFP for this study also called for a simplifying assumption that new buildings are constructed to meet minimum ener gy codes, even though that may not actually be the case. While, as noted above, the authors have sought to use the best available data, there are many assumptions where there may be reasonable alternative assumptions that would yield somewhat different results. For example, the “good, better and best” scenarios for housing weatherization and retrofit, while constructed to be reasonable illustrations, are not necessarily typical of many homes because of the wide diversity in size, age, type, and quality of construction, renovation and maintenance of exis ting homes. Furthermore, while the measures lists are extensive and represent most, if not al l, commercially available, and some emerging, energy efficient measures, they are not exhaus tive, particularly for peak electric demand reduction measures and potential fuel oil and propane savings, as further noted in footnote 30 of this report. Also, there was no attempt to place a dollar value on some difficult to quantify benefits that may result from some measures, such as increased comfort or reduced maintenance, which may in turn support some personal choices to implement particular measures that may otherwise not be cost-effective or only marginally so.

Thus, the various potential estimates are specific to and limited by the detailed measures lists and assumptions described in this study. As new and improved energy efficiency products and strategies emerge and as regulatory, market, and behavioral barriers are reduced, the potentially obtainable estimate of energy efficiency might reasonably be expected to increase. In any case, we have provided here one well informed reasonable scenario of potentially obtainable increases in cost-effective energy efficiency for New Hampshire. Others are plausible. With this report we are providing the PUC with a complete copy of the spreadsheet model with all the measures and assumptions to facilitate further analysis by them, including revisions and updates to the assumptions and measures list. The main outputs of this study are summary data tables and figures identifying the potential for additional energy efficiency opportunities in New Hampshire over the ten-year period, 2009 through 2018. Wherever possible, this study makes use of actual New Hampshire residential,

5 There has been a recent trend to temper estimates of cost-effective potential by taking into consideration behavioral, market, regulatory, financing and/or political barriers. A just released study by the Electric Power Research Institute used a similar concept that they calle d the “Realistically Achievable Potential (RAP).” See: Assessment of Achievable Potential from Energy Efficie ncy and Demand Response Programs in the U.S.: (2010– 2030) , EPRI, Palo Alto, CA: 2009. 1016987, p. xiv. See also National Action Plan for Energy Efficiency (2007), Guide for Conducting Energy Efficiency Potential Studies, prepared by Philip Mosenthal and Jeffrey Loiter, Optimal Energy, Inc., www.epa.gov/eeactionplan , p. 2-4.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### commercial and industrial customer data collect ed through phone surveys and site visits. Given the magnitude of efficiency measures included for consideration in this study, in cases where New Hampshire customer-specific information was not available, data on measure savings, costs and penetration rates were compiled through a combination of secondary research (including reviews of other previous relevant studies), utility-provided data, manufacturer specifications, and direct calculation through energy calculators and building simulation modeling. Collectively, these data sources provided an important and extensive foundation for estimates of electric energy, natural gas and related oil and propane savings potential by measure type, end-use and customer sector.



## 1.2 Results Overview

Energy-efficiency opportunities typically are physi cal, long-lasting changes to buildings and equipment that result in decreased energy use while maintaining the same or improved levels of energy service. This study shows that there is still significant savings potential in New Hampshire for cost effective electric and natural gas energy-efficiency measures and practices (and associated oil and propane savings).

As shown in Table 1, the Technical potential savings (all sectors combined) for electric energy efficiency measures in New Hampshire is over 27 percent of projected 2018 kWh sales in the State, and similarly over 27 percent for non-electric (natural gas, oil and propane) efficiency measures. The Maximum Achievable Cost Effective potential (before consideration of customer behavior) is over 20 percent (nearly 2,700 gWh annually) of projected 2018 kWh sales (over 15 percent summer peak demand reduction), and over 16 percent of projected 2018 non-electric sales (more than 15,440,000 MMBTu). 6 

### It is important to note, in the industrial sector, that the Maximum Achievable and Maximum Achievable Cost Effective potentials are the same. As explained in more detail in Section 6 of this report, this is because all end uses assessed in the industrial sector were screened as cost effective during the modeling process. The Potentially Obtainable scenario (including consideration of customer behavior) shows savings from electric and non-electric efficiency measures of approximately nearly 11 percent of 2018 kWh sales and approximately eight percent of projected 2018 non-el ectric (natural gas, oil and propane) sales. The Potentially Obtainable electric savings is equal to approximately 78 percent of the projected growth in electricity consumption over the next decade.

Estimates of the associated potential reductions in CO 2 

### emissions are also shown in Table 1, along with estimated costs that would be required to achieve these potentials. Depending on the scenario considered, these emission reductions and costs to achieve can be quite substantial (i.e., over three million tons at nearly seven billion dollars, based on the combined electric and non-electric Technical potential scenarios; or more than one million tons and nearly nine hundred million dollars based on the Potentially Obtainable scenarios). 7 

### In developing these estimates, savings opportunities from market driven (replace on burnout and new construction) and retrofit (early retirement ) energy efficiency program strategies were considered, where applicable.

The potential savings estimates, and costs to achieve those savings, are shown separately for electric, non-electric, and natural gas (a subset of non-electric) efficiency measures in Table 2,

6 Based on cost-effectiveness screening using the NH PUC- approved Total Resource Cost Test methodology as specified and described in Footnote 1, excluding enviro nmental externalities not already captured within avoided
cost values, consistent with cu rrent utility and NHPUC procedures.

7 This is equivalent to removing over 509,000 cars from New Hampshire’s highways under the Technical Potential
scenarios, or 178,000 cars under th e Potentially Obtainable scenario.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 6 

### Table 3, and Table 4 respectively. As shown in these tables, more electric savings can be obtained within the residential sector than in the commercial or industrial sectors. However, the cost to achieve that savings is substantially lower in the commercial and industrial sectors and highest in the residential sector. This implies that programs targeting the commercial and industrial sectors will yield the greatest electric energy savings per dollar spent, while substantial savings can also be obtained within the residential sector, but at nearly twice the cost per kWh saved. For instance, as shown in Table 2 under the commercial sector potentially obtainable scenario, 492 million kWh of annual savings is estimated by the year 2018 at an installed cost of just under $125 million (approximately 26 cents per kWh saved). In comparison, the residential sector yields approximately 698 million kWh of annual savings of estimated potential by the year 2018 at an insta lled cost of $383 million (55 cents/kWh saved). Similarly in the non-electric sectors, although there is more savings potential within the residential sector, the cost to achieve that savings is substantially greater than that required to save energy in the non-electric commercial and industrial sectors. For instance, per Table 3 under the commercial sector potentially obtainable scenario, nearly 3.3 million MMBTu of annual non-electric energy savings is estimated by t he year 2018 at an installed cost of just over $102 million ($31/MMBTu). In comparison, approx imately 3.6 million MMBTu of annual savings potential is estimated in the residential sector by the year 2018 at an installed cost of over $200 million. ($56/MMBTu).Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.7Table 1. Summary of Energy Savings Potentials by 2018 – CombinedElectric and Non-Electric MeasuresEstimated AnnualElectric Savings by2018 (MWh)Savings in2018 as % ofSector 2018ElectricConsumptionEstimated AnnualDemand Savingsby 2018 By Sector(MW)EstimatedSavings as % ofPeak SectorDemand by 2018Estimated AnnualNon-ElectricSavings by 2018(MMBtu)Savings in 2018 as% of Sector 2018Non-Electric FuelConsumptionTotal Estimated Coststo Achieve 2018Annual Savings($2008 NPV)Total EstimatedCO2 Reductions(tons)*Total EstimatedAnnual BenefitsAssociatedW/Combined Savingsin 2018 ($2008 NPV)Simple Payback(NPV Total Costs/ NPV AnnualSavings)Technical Potential (Best Only) 1,770,861 31.7% 66.7 5.5% 16,918,392 50.0%5,774,815,282$ 1,868,111 537,038,623$ 10.8Technical Potential (Traditional) 1,489,861 26.7% 56.1 4.7% 12,099,639 35.8%4,426,572,142$ 1,422,161 431,607,466$ 10.3Max. Achievable Potential 1,217,145 21.8% 45.9 3.8% 7,463,743 22.1%2,421,842,542$ 992,217 329,670,655$ 7.3Max. Achievable Cost Effective 1,170,398 20.9% 44.1 3.7% 6,313,954 18.7%1,088,457,430$ 893,638 308,833,633$ 3.5Potentially Obtainable 698,069 12.5% 26.3 2.2% 3,633,554 10.7%583,533,793$ 523,728 182,946,598$ 3.2Technical Potential (Traditional) 1,598,032 29.8% 476.9 37.3% 11,981,017 26.4%2,193,294,132$ 1,455,559 256,276,208$ 8.6Max. Achievable Potential 1,298,063 24.2% 385.9 30.2% 10,075,678 22.2%1,887,366,888$ 1,206,409 211,424,997$ 8.9Max. Achievable Cost Effective 1,066,772 19.9% 317.1 24.8% 7,710,337 17.0%636,534,346$ 951,512 168,353,689$ 3.8Potentially Obtainable 492,023 9.2% 146.3 11.4% 3,252,204 7.2%227,057,997$ 417,563 74,769,619$ 3.0Technical Potential (Traditional) 515,486 24.5% 109.7 22.0% 1,755,089 11.2%153,382,708$ 321,722 60,659,145$ 2.5Max. Achievable Potential 442,671 21.1% 94.2 18.9% 1,415,809 9.0%130,703,312$ 269,877 51,327,675$ 2.5Max. Achievable Cost Effective 442,671 21.1% 94.2 18.9% 1,415,809 9.0%130,703,312$ 269,877 51,327,675$ 2.5Potentially Obtainable 213,810 10.2% 81.9 16.5% 683,836 4.4%63,129,699$ 130,350 24,791,267$ 2.5Technical Potential (Traditional) 3,603,379 27.6% 642.7 21.6% 25,835,745 27.2%6,773,248,982$ 3,199,443 748,542,819$ 9.0Max. Achievable Potential 2,957,879 22.7% 525.9 17.6% 18,955,230 20.0%4,439,912,741$ 2,468,502 592,423,327$ 7.5Max. Achievable Cost Effective 2,679,841 20.5% 455.3 15.3% 15,440,100 16.3%1,855,695,087$ 2,115,027 528,514,996$ 3.5Potentially Obtainable 1,403,902 10.8% 254.5 8.5% 7,569,594 8.0%873,721,489$ 1,071,642 282,507,484$ 3.1*The average vehicle in the United States produces around 12,100 lbsof carbon dioxide per year. This means that realizing thefull Technical Potential calculated here would be thecarbon equivalent of taking over 509,000 cars off the road. Realizing the Potentially Obtainable figure would be the equivalentof removing 178,000 cars.RESIDENTIAL SECTORCOMMERCIAL SECTORINDUSTRIAL SECTORALL SECTORS COMBINEDFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.8Table 2. Summary of Energy Savings Potentials by 2018 – Electric88For purposes of this study, a simplifying assumption was used to estimate peak demand savings. Percentage sector peak demandsavings are calculated to showsavings over the summer coincident peak demand period only and are not broken out separately for summer and winder peak periods.Estimated AnnualSales by 2018(kWh)Estimated AnnualSavings by 2018(kWh)Savings in 2018as % of Sector2018 ElectricConsumptionSavings in 2018as % of Total2018 ElectricConsumptionEstimated AnnualSales by 2018(MW)Estimated AnnualDemand Savingsby 2018 By Sector(MW)EstimatedSavings as %of Peak SectorDemand by2018EstimatedSavings as %of Total PeakDemand by2018Estimated Costs toAchieve 2018 AnnualSavings(10 Year Cumulative)($2008 NPV)Total EstimatedAnnual BenefitsAssociatedW/CombinedSavings in 2018($2008 NPV)Simple Payback(NPV Total Costs /NPV AnnualSavings)Technical Potential (Best Only) 1,770,860,535 31.7% 13.6% 66.7 5.5%2.2%$2,554,517,348376,791,837$ 6.8Technical Potential (Traditional) 1,489,861,317 26.7% 11.4% 56.1 4.7%1.9%$2,149,167,880317,002,707$ 6.8Max. Achievable Potential 1,217,144,947 21.8% 9.3% 45.9 3.8%1.5%$1,214,926,125258,975,945$ 4.7Max. Achievable Cost Effective 1,170,397,964 20.9% 9.0% 44.1 3.7%1.5%$632,287,942249,029,435$ 2.5Potentially Obtainable 698,069,156 12.5% 5.4% 26.3 2.2%0.9%$383,050,068148,530,477$ 2.6Technical Potential (Traditional) 1,598,032,244 29.8% 12.2% 476.9 37.3%16.0%$971,216,931142,795,006$ 6.8Max. Achievable Potential 1,298,062,604 24.2% 9.9% 385.9 30.2%12.9%$850,883,854115,990,687$ 7.3Max. Achievable Cost Effective 1,066,771,952 19.9% 8.2% 317.1 24.8%10.6%$311,837,06495,323,300$ 3.3Potentially Obtainable 492,022,609 9.2% 3.8% 146.3 11.4%4.9%$124,823,76943,965,553$ 2.8Technical Potential (Traditional) 515,485,621 24.5% 4.0% 109.7 22.0%3.7%$133,914,92946,000,232$ 2.9Max. Achievable Potential 442,671,155 21.1% 3.4% 94.2 18.9%3.2%$114,998,89439,502,510$ 2.9Max. Achievable Cost Effective 442,671,155 21.1% 3.4% 94.2 18.9%3.2%$114,998,89439,502,510$ 2.9Potentially Obtainable 213,810,168 10.2% 1.6% 81.9 16.5%2.7%$55,544,46619,079,712$ 2.9Technical Potential (Traditional) 3,603,379,183 27.6% 27.6% 642.7 21.6%21.6%$3,254,299,740 $505,797,945 6.4Max. Achievable Potential 2,957,878,706 22.7% 22.7% 525.9 17.6%17.6%$2,180,808,873 $414,469,142 5.3Max. Achievable Cost Effective 2,679,841,071 20.5% 20.5% 455.3 15.3%15.3%$1,059,123,900 $383,855,246 2.8Potentially Obtainable 1,403,901,933 10.8% 10.8% 254.5 8.5%8.5%$563,418,303 $211,575,742 2.70.322575231Technical Potential (Traditional) 1,389,391Max. Achievable Potential 1,140,499Max. Achievable Cost Effective 1,033,293Potentially Obtainable 541,317Total NH 2018 Peak Demand2982 MWRESIDENTIAL SECTORINDUSTRIAL SECTORALL SECTORS COMBINEDTotal Estimated CO2 Reductions (tons)5,589,807,380 1206COMMERCIAL SECTOR5,353,798,9462,102,729,95913,046,336,28512794982982Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.9Table 3. Summary of Energy Savings Potentials by 2018 – Non-ElectricEstimated Annual Salesby 2018 (MMBtu)Estimated AnnualSavings by 2018 (MMBtu)Savings in 2018 as % ofSector 2018 Non-ElectricFuel ConsumptionSavings in 2018 as % ofTotal 2018 Non-ElectricFuel ConsumptionEstimated Costs to Achieve 2018Annual Savings(10 Year Cumulative)($2008 NPV)Total EstimatedAnnual BenefitsAssociatedW/Combined Savingsin 2018 ($2008 NPV)Simple Payback(NPV Total Costs /NPV Annual Savings)Technical Potential (Best Only) 16,918,392 50.0% 17.8% 3,220,297,934$160,246,785$ 20.1Technical Potential (Traditional) 12,099,639 35.8% 12.8% 2,277,404,262$114,604,759$ 19.9Max. Achievable Potential 7,463,743 22.1% 7.9% 1,206,916,417$70,694,710$ 17.1Max. Achievable Cost Effective 6,313,954 18.7% 6.7% 456,169,489$59,804,197$ 7.6Potentially Obtainable 3,633,554 10.7% 3.8% 200,483,725$34,416,121$ 5.8Technical Potential (Traditional) 11,981,017 26.4% 12.6% 1,222,077,201$113,481,202$ 10.8Max. Achievable Potential 10,075,678 22.2% 10.6% 1,036,483,035$95,434,310$ 10.9Max. Achievable Cost Effective 7,710,337 17.0% 8.1% 324,697,281$73,030,388$ 4.4Potentially Obtainable 3,252,204 7.2% 3.4% 102,234,228$30,804,066$ 3.3Technical Potential (Traditional) 1,755,089 11.2% 1.9% 19,467,779$16,623,765$ 1.2Max. Achievable Potential 1,415,809 9.0% 1.5% 15,704,417$13,410,187$ 1.2Max. Achievable Cost Effective 1,415,809 9.0% 1.5% 15,704,417$13,410,187$ 1.2Potentially Obtainable 683,836 4.4% 0.7% 7,585,234$6,477,120$ 1.2Technical Potential (Traditional) 25,835,745 27.2% 27.2% 3,518,949,242$ 244,709,726$14.4Max. Achievable Potential 18,955,230 20.0% 20.0% 2,259,103,869$ 179,539,207$12.6Max. Achievable Cost Effective 15,440,100 16.3% 16.3% 796,571,187$ 146,244,773$5.4Potentially Obtainable 7,569,594 8.0% 8.0% 310,303,186$ 71,697,307$4.3Technical Potential (Traditional) 1,679,847Max. Achievable Potential 1,239,514Max. Achievable Cost Effective 1,005,418Potentially Obtainable 536,933Total Estimated CO2 Reductions (tons)33,838,195RESIDENTIAL SECTORCOMMERCIAL SECTORINDUSTRIAL SECTOR94,841,92845,329,91515,673,818ALL SECTORS COMBINEDFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.10Table 4. Summary of Energy Savings Potentials by 2018 – Natural GasEstimated Annual Salesby 2018 (MMBtu)Estimated AnnualSavings by 2018 (MMBtu)Savings in 2018 as % ofSector 2018 Non-ElectricFuel ConsumptionSavings in 2018 as % ofTotal 2018 Non-ElectricFuel ConsumptionEstimated Cumulative Costs toAchieve 2018 Annual Savings(10 Year Cumulative)($2008 NPV)Total EstimatedAnnual BenefitsAssociatedW/Combined Savingsin 2018 ($2008 NPV)Simple Payback(NPV Total Costs /NPV Annual Savings)Technical Potential (Best Only) 5,250,770 64.1%19.8%$1,122,335,58555,849,078$ 20.1Technical Potential (Traditional) 3,776,852 46.1%14.2%$807,290,16640,624,889$ 19.9Max. Achievable Potential 2,262,674 27.6%8.5%$426,300,16324,970,384$ 17.1Max. Achievable Cost Effective 1,807,030 22.1%6.8%$117,928,73615,460,555$ 7.6Potentially Obtainable 1,057,239 12.9%4.0%$54,192,3339,302,949$ 5.8Technical Potential (Traditional) 3,347,637 26.4%12.6%$304,022,37128,231,297$ 10.8Max. Achievable Potential 2,815,263 22.2%10.6%$261,039,37524,035,234$ 10.9Max. Achievable Cost Effective 2,154,359 17.0%8.1%$88,161,41519,829,123$ 4.4Potentially Obtainable 908,704 7.2%3.4%$27,607,9598,318,519$ 3.3Technical Potential (Traditional) 638,214 11.2%2.4%$7,079,1926,045,006$ 1.2Max. Achievable Potential 514,840 9.0%1.9%$5,710,6974,876,432$ 1.2Max. Achievable Cost Effective 514,840 9.0%1.9%$5,710,6974,876,432$ 1.2Potentially Obtainable 248,667 4.4%0.9%$2,758,2672,355,316$ 1.2Technical Potential (Traditional) 7,762,703 29.2%29.2%$1,118,391,730 77,773,595$14.4Max. Achievable Potential 5,592,777 21.1%21.1%$693,050,235 55,079,225$12.6Max. Achievable Cost Effective 4,476,228 16.9%16.9%$211,800,848 38,885,121$5.4Potentially Obtainable 2,214,611 8.3%8.3%$84,558,558 19,537,733$4.3Technical Potential (Traditional) 427,919Max. Achievable Potential 308,302Max. Achievable Cost Effective 246,752Potentially Obtainable 133,064Total Estimated CO2 Reductions (tons)RESIDENTIAL SECTOR8,189,374COMMERCIAL SECTOR12,665,712INDUSTRIAL SECTOR5,699,570ALL SECTORS COMBINED26,554,656Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 11 

### As shown in Figure 1, in the residential sector, New Hampshire’s greatest areas for electric energy savings from the installation of cost-effective energy efficiency measures come from combined single family (SF) and multifamily lighting 9 

### (MF) (52% of the annual savings by the year 2018), electric appliances (16% by 2018, combined SF and MF), and space heating and cooling combined SF and MF (10% by 2018) followed by standby (phantom) power (9%) and water heating (9% – 5% SF and 4% MF) and new construction activities (4%). Figure 2 shows the greatest areas for non-electric savings come from space heating (oil-fueled) and water heating (all fuels), nearly 30% each when SF and MF potentials are combined, and weatherization packages (all fuels) in single fa mily homes (16% SF and MF combined). The large potential for savings from oil-fueled space heating measures is not surprising since nearly 60 percent of all homes in New Hampshire heat with oil. The greatest potential for natural gas savings in the residential sector comes from replacement of inefficient gas furnaces and boilers in multifamily and single family homes (nearly 9% and 6% respectively).

Figure 1. Residential Electric Energy Efficiency Maxi mum Achievable Cost Effective – by End Use

9 Lighting savings in the residential sector are largely being driven by savings from CFL bulbs and or CFL fixtures in single family and multi-family homes. It is very important to note, that these savings might be overstated for the post-2012 period for two main reasons. First, this study do es not take into direct consideration future changes to energy codes as they relate to residential lighting applications, including improved federal efficiency standards for incandescent bulbs (the base technology from which current lighting savings are calculated) that are designated to become effective in 2012. This study was conducted based on the standards and energy savings differentials (e.g., between CFLs and incandescent bulbs) in existence as of 2009. Secondly, a lthough this study includes emerging lighting technologies (i.e., LEDs), there is a high likeli hood that as these new and emerging lighting technologies enter the market, the penetration of CFLs will be significant and new improved efficiency incandescent light bulbs will also be entering the market. Thus, the incremental savings going from a CFL to a new technology (such as LED or super high efficiency incandescent) will be dramat ically lower than the current incremental savings going from standard incandescent to compact florescent (CFL). This consideration was addressed partially by the assumption that new technologies will always emerge, and savi ngs will always be present as a result – however, it is true, that those savings, as stated previously, will be lower, and as a result, may be somewhat overstated during the second half of the study’s 2009 through 2012 fo recast horizon. Lighting
‐ SF

34%

Lighting
‐ MF

18% Electric Appliances
‐ SF

13% Standby Power

9% Space Heating and Space Cooling
‐ SF

7% Water
Heating ‐ SF

5% Water Heating ‐ MF

4% SF New Construction

4% Space Heating and Space Cooling
‐ MF

3% Electric Appliances
‐ MF

3% Pools

0%Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 12 Figure 2. Residential Non-Electric Efficiency Maximum Achievable Cost Effective – by End Use



### Savings within the commercial sector were assessed separately for existing buildings and for potential new construction. As shown in Figure 3 (existing buildings) and Figure 4 (newconstruction), New Hampshire’s greatest areas for electric savings from the installation of costeffective energy efficiency measures come from lighting and/or lighting controls – i.e., 39% by 2018 from existing buildings, including retrofit of existing lighting systems; and 42% from new construction activities, mainly from lighting desig n. The next significant area for electric savings is from refrigeration – i.e., 19% by 2018 from existing buildings and 18% from new construction activities. HVAC systems and controls (in existing buildings) and building envelope improvement packages (in new construction) also provide substantial savings. Home Gas Heat (MF)

9%

Home Gas Heat (SF)

6%

Home Oil Heat (SF)

25%

Home Oil Heat (MF)

3%

Home Propane Heat (MF)

1% Home

Propane

Heat (SF)

5%

New Construction (MF)

2% New Construction (SF)

4% Water Heating (MF)

11% Water Heating (SF)

18% Weatherization Packages (MF)

4% Weatherization Packages (SF)

12%Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 13 Figure 3. Max Achievable Cost Effective Electric Savings by End Use for Commercial Existing Buildings

Figure 4. Max Achievable Cost Effective Electric Savings by End Use for Commercial New Construction Appliances, Computers, Office

Equipment

3% Building Envelope

3% Compressed Air

0%

HVAC Controls

13%

Lighting

29%

Non

‐ HVAC Motors

3% Pools

1% Refrigeration

19% Space Cooling
‐ Chillers

2% Space Cooling
‐ Unitary and Split

AC

4% Space Heating

3% Transformers

1% Ventilation

5% Water Heating

3% Lighting Controls

10%

Appliances, Computers,

Office Equipment

3%

Building Envelope

11% Compressed Air

0%

Cooking

0%

HVAC Controls

2%

Non

‐ HVAC Motors

3%

Pools

1%

Refrigeration

18%

Space Cooling
‐ Chillers

4%

Space Cooling
‐ Unitary and Split AC

4% Space Heating

3% Transformers

1% Ventilation

7%

Water Heating

3% Lighting Design

42%Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 14 

### New Hampshire’s greatest areas for non-electric energy savings in the commercial sector come from the installation of cost-effective space heating (44%), water heating and HVAC controls (17% each) and building envelope (13%) in existing buildings, as shown in Figure 5. Space heating measures also provide the greatest potential for non-electric savings in the commercial new construction area (44%) as shown in Figure 6, followed by building envelope and water heating (16%), and HVAC controls (15%).

Figure 5. Max Achievable Cost Effective Non-Electric Savings by End Use - Commercial Existing Buildings

Figure 6. Max Achievable Cost Effective Non-Electric Savings by End Use - Commercial New Construction Building Envelope

13%

Space Heating

44% HVAC Controls

17% Cooking

4% Pools

4% Ventilation

1% Water Heating

17%

Building Envelope

16%

Space Heating

44% HVAC Controls

15% Cooking

4% Pools

4% Ventilation

1% Water Heating

16%Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 15 

### Within the Industrial sector, Figure 7 shows that the greatest areas for electric energy savings come from machine drives (40%), s ensors and controls (16%), lighting (15%), process heating measures (13%), and fa cility HVAC (11%). As shown in Figure 8 

### , the greatest areas for non-electric savings in the industrial sector come from process heating, conventional boiler use and facili ty HVAC measures (52%, 33% and 13% respectively).

Figure 7. Max Achievable Cost Effective Electric Savings by End Use for NH Industrial Sector

Figure 8. Max Achievable Cost Effective Non-Electric Savings by End Use for NH Industrial SectorFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 16 

### Table 5 and Table 6 present the estimated 2018 Technical, Maximum Achievable, Maximum Achievable Cost Effective potentials and results from the Potentially Obtainable scenario for each of the four New Hampshire retail electricity providers and two natural gas distribution companies. As can be seen from these tables, the greatest potential for electric savings exists within PSNH’s service territory (approximately 73% of the state’s projected kWh and MW savings), followed by Unitil (nearly 12%), National Grid (over 8%) and the NH Electric Cooperative (just under 7%). Seventy-seven percent of the natural gas savings potential exists within National Grid’s service territory, with the remaining 23% coming from Northern Utilities territory. It is important to note that a majority of the non-electric savings potential comes from measures installed in oil and propane-fueled homes and businesses.

Table 5. Additional Energy Effici ency Opportunities Potential by 2 018 - Breakdown by Utility – Electric



# All Sectors

Estimated Annual Savings by 2018 (kWh) Estimated Utility

Max. Achievable

Cost Effective Savings in 2018 as

a Percent of Total Estimated Savings Estimated Annual Sales by

2018 (kWh) Estimated Annual Demand Savings by 2018 (MW) Estimated Utility Max.

Achievable Cost

Effective Demand Savings in 2018 as a

Percent of Total Estimated Savings Estimated Annual Sales by

2018 (MW)

Technical Potential (Traditional) 2,641,281,301 466.2

Max. Achievable Potential 2,166,873,873 381.4
Max. Achievable Cost Effective 1,956,745,201 329.9
Potentially Obtainable 1,022,507,558 183.9

Technical Potential (Traditional) 240,590,220 43.3

Max. Achievable Potential 197,148,030 35.2
Max. Achievable Cost Effective 181,927,003 29.9
Potentially Obtainable 99,640,017 15.3

Technical Potential (Traditional) 410,156,541 75.7

Max. Achievable Potential 339,044,561 62.4
Max. Achievable Cost Effective 315,351,394 55.5
Potentially Obtainable 166,137,024 33.9

Technical Potential (Traditional) 311,351,120 57.6

Max. Achievable Potential 254,812,243 47.0
Max. Achievable Cost Effective 225,817,473 40.1
Potentially Obtainable 115,617,334 21.4

Technical Potential (Traditional) 3,603,379,183 642.7

Max. Achievable Potential 2,957,878,706 525.9
Max. Achievable Cost Effective 2,679,841,071 455.3
Potentially Obtainable 1,403,901,933 254.5 All Electric Utilities - Totals

100.0% 13,046,336,285 206 9,535,258,276

880,356,308 73.0% 72.5%

6.8% 6.6%

1,524,047,235 PSNH

NH Electric Co-op

Unitil

National Grid-Electric 2,139

2,982 12.2%

8.4% 231 11.8% 406

8.8% 1,106,674,467

100.0%Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 17 Table 6. Additional Energy Effici ency Opportunities Potential by 2018 - Breakdown by Utility – Natural Gas



## 1.3 Potentially Obtainable Scenario

In the Potentially Obtainable scenario developed for this report, all cost-effective energy efficiency measures were assessed in light of customer priorities and estimated pricing behaviors (i.e. sensitivity to payback). Concerni ng priorities, customers’ responses to questions included in this projects’ sector-specific telephone surveys and site visits were used to determine the percentage of customers that stated they were “extremely likely” to purchase energy efficient equipment (73% of residential customers, and 48% of commercial and industrial customers). Customer behaviors regarding pricing were estimated based on some simplifying assumptions that all “extremely likely to purchase” customers would potentially install energy efficient measures if the price were below a certain level (i.e., 7 cents levelized cost per /kWh saved) and half of those same customers would lik ely install cost-effective measures in cases where the costs were more than 7 cents/kWh saved (the model also built in functionality to eliminate those measures with extremely high le velized costs in order to avoid outliers from being considered in the Potentially Obtainable scenario). Embedded within this approach was the assumption that fifty percent of the asso ciated energy efficiency measure cost would be provided to these customers through a measur e rebate to achieve the desired customer purchase action (essentially reducing the customer’s out-of-pocket cost to 3.5 c/kWh in this example, or equivalent to approximately a 1 to 2 year payback on the customers’ portion of the energy efficiency measure investment). This re bate level assumption is based upon a previous review conducted by GDS of numerous energy e fficiency studies, including a National Energy 

# All Sectors Estimated Annual Savings by 2018 (MMBtu) Estimated Utility Max.

Achievable Cost Effective Savings in 2018 as a Percent of Total Estimated Savings Estimated Annual Sales by

2018 (MMBtu)

Technical Potential (Traditional) 5,294,129

Max. Achievable Potential 3,916,204

Max. Achievable Cost Effective 3,198,934

Potentially Obtainable 1,558,051

Technical Potential (Traditional) 1,589,633

Max. Achievable Potential 1,195,725

Max. Achievable Cost Effective 973,825

Potentially Obtainable 466,856

Technical Potential (Traditional) 6,883,763

Max. Achievable Potential 5,111,929

Max. Achievable Cost Effective 4,172,758

Potentially Obtainable 2,024,907 100.0% 26,283,248 6,193,361 76.7%

23.3% National Grid - Natural Gas Savings Only

Northern Utilities - Natural Gas Savings Only 20,089,887

All Natural Gas Utilities Combined - TotalsFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 18 

### Efficiency Best Practices Study and was supplemented with data collected through the phone surveys and site visits conducted as part of this current project. 10,11



## 1.4 Implementation Costs

To achieve the Potentially Obtainable amount of energy efficiency savings by 2018, substantial efforts, including continued and expanded utility programmatic support will be required. Suchprogrammatic support would include rebates to customers (including potential targeted midstream and upstream market actors), program marketing and outreach, administration, planning, and program evaluation activities. Although not included in this report’s “cost to achieve estimates,” all such costs would be required to ensure the delivery of quality and reliable energy efficiency products and services to New Hampshire’s consumers. As noted above, the projection for Potentially Obtainable electricity and non-electric energy savings assumes that customers receive rebates equivalent to fifty percent of measure incremental (or full) costs. This incentive level assumption w ill help to reduce customer out-of-pocket costs and will quicken the paybacks on measures installed to more actionable levels. The fifty percent incentive is based both upon customer provided input (via this project’s phone surveys and site visits data collection efforts), and from review of numerous energy efficiency studies including the National Energy Efficiency Best Practices Study. If customers had to receive 100% of measure incremental or full costs to achieve the Potentially Obtainable scenario’s savings levels, then program budgets would double.



## 1.5 Market-Driven vs. Retrofit

Energy efficiency potential in the existing stock of buildings can be captured over time through two principal processes:

1. as equipment replacements are made normally in the market when a piece of equipmentis at the end of its useful life (often referred to as “market-driven” or “replace-onburnout”); and,

2. at any time in the life of the equipment or building (referred to as “retrofit”).

Market-driven measures are generally characterized by incremental measure costs and savings (e.g., the incremental costs and savings of a high-efficiency versus a standard efficiency air conditioner); whereas retrofit measures are gener ally characterized by full costs and savings (e.g., the full costs and savings associated with retrofitting ceiling insulation into an existing attic). A specialized retrofit case is often referred to as “early replacement” or “early retirement”. This refers to a piece of equipment whose replac ement is accelerated by several years, as compared to the market-driven assumption, for the purpose of capturing energy savings earlier than they would otherwise occur.

10 See “National Energy Efficiency Best Practices St udy, Volume NR5, Non-Residential Large Comprehensive Incentive Programs Best Practices Repor t”, prepared by Quantum Consulting fo r Pacific Gas and Electric Company, December 2004, page NR5-51.

11 As part of this project, telephone surveys were conducted with 400 residential customers and 200 small
commercial customers, and site visits were conducted w ith 100 larger commercial customers and 100 industrial customers. Questions were included in th ese surveys and site visits to assess cu stomer interest in energy efficiency

and the value of incentiv es to the customer decision-making process.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 19 

### For this study, the GDS Team has examined the impacts of “early replacement” for a select group of measures (i.e

. , T-8 lighting, insulation and weat herization measures in existing buildings). For these measures, GDS assum ed that customers would receive an incentive equivalent to 50% of the full cost of the energy efficiency measures at the time of retrofit. 12



## 1.6 Customer Participation and Barriers

Based on results from the customer telephone surveys and on-site interviews, a number of insights regarding customer participation, preferences and barriers have been identified. Highlights are presented below. Please refer to Section 7 of this report for more detailed

information.



### 1.6.1 Residential Customer Program Pa rticipation and Barriers Summary

• Over 90% of the residential customers survey ed said they pay “some” or “substantial” attention to controlling energy costs

• After being read a definition of energy efficiency and the fact that such measures typically cost more than less efficient models (often 20 to 30% more), 73% stated that they were “extremely likely” to purchase energy efficient equipment if it lowered their energy bill, increased comfort, or helped the environment.

• Installation of energy efficiency features are commonly considered as part of remodeling projects (64% among recently remodeled homes, and 90% among homes with a future remodeling plan).

• About half of the households surveyed are awar e of their utility offering energy efficiency programs, and 30% have participated in them in some way.

• Low income households were found to have a si gnificantly higher participation rate (they are twice as likely to report participating in such programs).

• Among participants, satisfaction with their utilities’ programs seems extremely high.

• The two most frequently cited reasons for nonparticipation were: (1) there was no recent purchase of energy-using household items, and (2) unawareness of program resources.



### 1.6.2 Commercial and Industrial Customer Program Participation and Barriers Summary

• Of the small and large commercial and industrial customers surveyed, 86% of respondents reported some or high level of attention to controlling energy costs.

• 48% stated that they were “extremely likely” to purchase energy efficient equipment if it lowered their energy bill, increased comfort, or helped the environment.

• Overall awareness of energy efficiency pr ograms and incentives offered by utility providers was significantly higher in the large commercial/industrial respondents (86%) compared to the small commercial/industrial respondents (60%).

• Past participation in utility provider offe red programs was similarly higher in the large customer group who was aware of the programs offered (86%) compared to the small customer group aware of the programs offered (30%).

• Of respondents who have participated in their utility’s energy efficiency programs, a significant majority of both small custom ers (94%) and large customers (98%) reported that they would participate in the programs again if given the opportunity.

12 Tying incentives to the full installed cost of targeted m easures in the case of early replacement (retrofits) is typical of the way that retrofit programs are currently being implemented here in New Hampshire and throughout the

country.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 20 

### • The single largest barrier to respondents investing in energy efficiency measures was concern about initial premium costs of equipment and insufficient payback (69%).

• Respondents indicated that the two most important factors influencing decisions to invest in energy efficient equipment are: (1) expectations of lower monthly energy bills and (2) rebates or incentives for purchasing energy efficient equipment that would help

offset some of the initial costs.

• Other factors such as business image, environmental impact, occupant comfort, and sales person recommendation were less likely to influence decisions to invest in energy efficient equipment.



## 1.7. Past/Current Program Capt ure and Recommendations

To date, New Hampshire’s electric and gas utilities have been quite effective in achieving energy and capacity savings and energy efficiency measure penetration across the state. But, as shown in Table 7 and Table 8 below, there is much room for additional penetration. In total, from 2002 through 2008, the electric energy efficiency programs are saving an estimated cumulative total of nearly 560 million kWh per year of energy 13 

### . This represents a savings of five percent of the total forecast energy usage for New Hampshire in 2008. Similarly from 2003 through 2008, the natural gas efficiency programs saved an estimated total of over 2.4 million therms per year 14 

### . This represents a savings of 1.1 percent of the total forecasted natural gas usage for New Hampshire in 2008.

Table 7. Cumulative Annual Program Savings as Percent of 2008 Sales: 2002 -2008 – Electric

Sector Total Annual Savings Since 2002 (MWh) Forecasted Sales

2008 (MWh) Cummulative

A nnual Savings as a

Percent of 2008

Sector Sales Cummulative Annual Savings as

a Percent of 2008

Total Sales

Residential 120,064 4,537,480 2.6% 1.1% Commercial/Industrial 437,210 6,650,732 6.6% 3.9%
Total 557,274 11,188,212 5.0%

Table 8. Cumulative Annual Pr ogram Savings as Percent of 2008 Sales: 2003-200 8 – Natural Gas

Sector Total Annual Savings Since 2003 (decatherms) Forecasted Sales

2008 (decatherms) C ummu l a ti ve

A nnual Savings as a

Percent of 2008

Sector Sales C ummu l a ti ve Annual Savings as

a Percent of 2008

Total Sales

Residential 95,387 8,435,900 1.1% 0.4%
Commercial/Industrial 150,248 14,267,000 1.1% 0.7%
Total 245,635 22,702,900 1.1%



### It is important to note that the figures in the above two tables are conservative in several ways. First, the utility providers have been actively o ffering efficiency programs since well before 2002 so the total amount of energy saved since the inception of efficiency programs is much higher.

13 Estimate is based on reported lifetime savings from 2005-2008 available on NHPUC website, GDS estimates for program measure lives used to calculate annual savings, and extrapolated kWh savings estimates for 2002-2004.

14 Estimate based on reported savings from 2003-2007 and GDS estimates for program measure livesFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 21 

### Second, these figures consider only cumulative annual savings, not lifetime savings 15 

### . In reality, annual savings are realized every year over the assumed measure life of the programs. The data was reported in the above manner to provide an appropriate comparison to the forecast 2008 usage. More details regarding this analysis are presented in Section 8 of this report.

To increase the likelihood of achieving the additional energy efficiency savings potential highlighted in this study, the following findings/recommendations are suggested (see Section 8 for more details):

To date, the efficiency programs offered in New Hampshire by the state’s four largest electric utilities and two natural gas distribution companies have been successful and have saved a substantial amount of energy. Many of the programs have and are continuing to perform quite well in terms of cost per unit of energy saved and customer participation. Several other programs have shown positive trends becoming more cost effective on a yearly basis.

For all programs, but most notably in the electric market, the cost per kWh saved in the commercial and industrial sectors has been better than in the residential market. This might explain why in general, commercial and industrial customers have indicated a higher awareness of the utilities’ efficiency programs available to them as well as an increased likelihood of program participation compared to residential customers. Given the scale of energy consumption in the commercial and industrial sectors, these customers continue to represent a substantial area for potential energy savings in the upcoming years.

• Recommendation: Additional penetration can be achieved through increased outreach
to small commercial/industrial customers and by expanding current program offerings to

include other cost effective measures not currently included in the companies’ CORE and utility-specific programs.

Residential customer participation in the state’s electric and natural gas energy efficiency programs has met or exceeded program expectations on a yearly basis. However, in the phone surveys more than half of respondents indicated that they were not aware of the programs offered by their utilities, or that they were ev en eligible. Of the customers who were aware of the programs, a high percentage participated and indicated they would participate in the future.

• Recommendation: This data underscores the importance of increasing consumer education on the programs available to residential customers and of the associated

benefits.

One final finding from the study is that nearly a ll of the most cost effective energy efficiency measures are included in current programs in some manner. In several programs, however, the cost effective measures are targeted to a sma ll percentage of consumers. The best example of

this is the Home Energy Solutions program which targets consumers with 65% or greater electric heating. Customers with electric heat as their primary heating source represent approximately 4% of the total population based on the phone surveys. 16

15 Cumulative annual savings were calculated by determining the annualized savings in a given year and summing those annual savings for each of the program years reviewed.

16 The 4% represents total number of custom ers with electric heat as their primary source for heating. A smaller percentage than 4% would qualify for participation in the Home Energy Solutions program, since 65% or more of their space heating needs to be met with electric heat.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 22 

### • Recommendation: Expanding the number and types of products and services available through the existing residential energy efficiency programs, and promotion of those programs to include a larger number of potential participants may lead to increased overall energy savings. It is important to recognize that such expansion would require providing services to customers that heat with fuels other than electric or natural gas. Issues regarding who would pay for the provis ion of services to such customers would

need to be addressed.



## 1.8 Structure of this Report

Section 2 of this report provides an overview of current and forecasted electric and natural gas energy usage in New Hampshire. Information on geographic, economic, demographic and energy usage characteristics of the State is also presented in Section 2. Section 3 of this report provides a detailed discussion of the research plan and methodologies used for the collection and analysis of all data in this report. Results from the participation, preferences and barriers questions asked as part of this project’s phone surveys and site visit interviews are alsopresented in Section 3. Sections 4, 5 and 6 provide detailed results from the electric and nonelectric energy efficiency potential analysis conducted for the residential, commercial and industrial sectors, respectively. Detailed results are presented in these sections regarding technical potential, maximum achievable potentia l, maximum achievable cost effective potential and the potentially obtainable scenario. Energy (kWh), capacity (kW), and associated therm (MMBTu) and environmental (tons of CO 2 

### ) savings are presented along with additional description of the methodologies used, where applicable.

This project included a major enhancement to a majority of the technical potential studies that have been conducted across the country in the past. Rather than relying on best available information from existing secondary sources to estimate current levels of energy using equipment saturations and penetration of energy e fficiency measures, significant primary data collection efforts were undertaken to help inform and derive New Hampshire-specific values where possible within the time requirements and work scope specified for this project. As such, this effort was completed through a combination of primary and secondary data collection and analysis activities. Detailed findings and an assessment of the value resulting from this enhanced, New Hampshire-specific data collection effort is presented in Section 7 of this report.

Section 8 assesses the amount of energy savings that past and current energy efficiency programs in the state have already captured. Recommendations for potential program modifications and measure offerings are also included in this section.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 23 

# Section 2: Characterization of Customer Base, Electric and Natural Gas Usage, and Load Forecasts for the State of New Hampshire

This section of the report provides electric and natural gas utility forecasts for energy usage in the State of New Hampshire based on data provided by the four electric and two natural gas utilities supporting this project. The utility-provided forecast information has been compared against the latest available ISO-NE forecasted data, where appropriate, to ensure reasonableness. In order to develop estimates of energy savings potential, it is important to understand how energy is used by households and businesses in New Hampshire. Therefore, this section also provides information on geographic, economic, demographic and energy usage

characteristics of the State.



## 2.1 New Hampshire Geographic and Demographic Characteristics

New Hampshire is the third largest state in New England after Maine and Vermont by total land area (fourth largest by population after Massachusetts, Connecticut and Maine). 17 

### The State is bordered by Canada, Vermont, Massachusetts, and Maine. The Connecticut River forms the western boundary with Vermont, while Maine forms a boundary for nearly its entire eastern border, until meeting the Atlantic Ocean near its southeastern border with Massachusetts. Manchester is the largest of New Hampshire’s 221 towns with an estimated population of 109,497 in 2006 according the US Census data. 18



### New Hampshire ranks 41 st 

### in the country (by population), and at approximately 9,000 square miles, is the fourth smallest state by total ar ea (68 miles at its widest point, and 190 miles long). New Hampshire is the second most forested state in the country, after Maine, in percentage of land covered by woods. Major regions of the state include the Great North Woods, the WhiteMountains, the Lakes Region, the Merrimack Valley, the Monadnock Region, the DartmouthLake Sunapee Region, and the Seacoast.

The White Mountain National Forest covers approximately 1,171 square miles in the northcentral portion of the state (including 5.6% of which is in the neighboring state of Maine). Lake Winnipesaukee is the largest lake in New Hampshire, covering approximately 72 square miles in the east-central part of the state. 19 

### The Seacoast area of New Hampshire has the smallest shoreline of any coastal state (just 18 miles l ong). Figure 9 provides a map of the state.

17 http://quickfacts.census.gov/qfd/states/44000.html . New Hampshire’s population density of 137.8 persons per square mile is higher than the population density in Verm ont (65.8) and Maine (41.3), but it is much lower than the other three New England states. For more detailed inform ation, see http://www.answers.com/topic/list-of-u-s-statesby-population-density.

18 2006 population estimate for Manchester, NH. http://w ww.nh.gov/nhes/elmi/htmlprofiles/manchester.html

19 http://en.wikipedia.org/wiki/New_Hampshire.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 24 Figure 9. New Hampshire Map 20

20 http://www.infoplease.com/atlas/state/newhampshire.htmlFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 25 

## 2.2 New Hampshire Economic a nd Demographic Characteristics

New Hampshire is a rural state with a population of approximately 1,350,000 persons in 2008 and 604,000 housing units. 21 

### According to the Energy Information Administration, the state’s energy consumption per capita is among the lowest in the country. This is due, in part to the low demand for air conditioning and the fact that relatively few households use electricity as their primary energy source for home heating. Over half of the households in New Hampshire

heat their homes with fuel oil in the winter. 22



### The New Hampshire Employment Security Economic and Labor Market Information Bureau prepares an annual Economic Analysis Report for the state. 23 

### The Bureau’s 2008 Report noted that New Hampshire has been growing faster than any of the other New England states, although this growth is occurring as a decreasing rate. Gross Domestic Product was $57.3 billion at the end of 2007, a 2.3% increase from 2006, but well below the 4.9% and 4.0% growth in 2005 and 2004 respectively. The seasona lly adjusted unemployment rate for New Hampshire was 3.8% at the end of the first quarter 2008, and has been consistently below the country’s average rate over the past fifteen years. Total employment is projected to grow in the state by 13.9% from 2006 to 2016. Although real estate activity has declined 5.6% from April 2007 to April 2008, this decline has been one of the smallest compared to the other New England states. Major areas for job growth are ex pected to include: healthcare, social services, computers and mathematics, and personal services.

To get a sense of the population mix in the state, electric and natural gas utility customer information was provided and is summarized below. This information was used in sample plan development for telephone surveys and site visits t hat were conducted as part of this project. As shown in Table 9, the four investor-owned electric utilities analyzed for this report have a collective total of 612,636 residential and low income customers, with PSNH serving a majority of these customers (67% and 83% respectively). A majority of natural gas customers are served by National Grid (61%).

Table 9. Total Customer Counts – Residential, Low Income NH Electric and Natural Gas Utilities 24



### Utility Residential Low Income Total
PSNH 392,202 67% 22,118 83% 414,320 68% NH Electric Coop 64,164 11% 2,423 9% 66,587 11%
Unitil 58,550 10% 2,083 8% 60,633 10%
National Grid-Electric 70,986 12% 110 <0.5% 71,096 11%

Subtotal Electric* 585,902 100% 26,624 100% 612,636 100%
National Grid-Gas 33,882 61% 1,117 100% 34,999 61%
Northern Utilities 21,988 39% 0 0% 21,988 39%

Subtotal Natural Gas+ 58,870 100.0% 1,117 100.0% 56,987 100.0%

21 Data obtained by GDS from “On-demand reports and maps from Business Analyst Online”, based on U.S Bureau of the Census, 2000 Census of Population and Housing, ESRI forecasts for 2008 and 2013.

22 Primary data collection – results from th is project’s residential telephone surveys

23 New Hampshire Economic Analysis Report 2008 , New Hampshire Employment Security Economic and Labor

Market Information Bureau

24 Likely underestimates the number of low-income customers for each utility. As shown in this table, the estimated percentage of New Hampshire’s population within th ese combined utility service territories is 4.3% (26,624/612,636), excluding double counting from natural gas utility customers that are also electric utility customers. In comparison, according to the 2007 American Community Survey of the U.S. Census Bureau, the percentage of the state’s population at or below the poverty level is 7.1%.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 26 * Excludes municipal electric utility customers + Represents subset of electric customers



### The State’s commercial and industrial customer base, to accommodate data collection efforts required for this report, were separated into small (<100 kW peak demand or 300,000 kWh/year) and larger customer groupings. As s hown in Table 10, the majority of small nonresidential electric customers are located in PSNH’s service territory (74%). The number of small commercial/industrial natural gas customers are split fairly evenly at 53% Northern Utilities and 47% National Grid. Based on review of Standard Industrial Classification (SIC) Code data included in some of the utility-provided customer data files, it appears that approximately 40% of New Hampshire’s small non-residential electric and natural gas customers are in the Services sector (SIC codes 70-89). Between 11% and 12% of the state’s small commercial/industrial customers appear to be in the Retail Trades sector (SIC Codes 52-59). The Finance, Insurance and Real Estate sector (SIC Codes 60-67) make up the next largest small C/I customer focus at approximately 4%. Followed by Manufacturing and Transportation/Public Utilities (SIC Codes 20-39 and 40-49 respectively).

Table 10. Total Customer Counts – Small No n-Residential NH Electric and Gas Utilities



### Utility Count % Total
PSNH 72,031 74% NH Electric Coop 9,845 10%
Unitil 9,092 9%
National Grid-Electric 6,627 7%

Subtotal Electric* 97.595 100%
National Grid-Gas 5,708 47%
Northern Utilities 6,470 53%

Subtotal Natural Gas+ 12,178 100.0% * Excludes municipal electric utility customers + Represents subset of electric customers



### The overall number of estimated large commercial and industrial accounts, as shown in Table 11 is 2,369. In summarizing data by SIC code in the top portion of the table, information provided by the utilities during the data acquisition/submission process was used. Not all utilities had complete customer SIC code information available for use, but based upon the SIC information received, manufacturing, services and retail trade were the three largest sectors

observed. The bottom portion of the table allocates those SIC codes associated with Manufacturing as Industrial and the remainder as Commercial. As can be seen, just over 31%

of those accounts classified in the data are industrial accounts.

The information presented in Table 11, shows an estimate of New Hampshire’s largecommercial and industrial (C&I) customer population based on a count of the number of utilityprovided customer accounts. For these larger accounts, it is helpful to view the customers based on their energy usage. As shown below in Table 12, the overall amount of electric consumption among the utilities’ larger commercial and industrial customers is estimated to be over 3,700 GWh. Although the industrial sector customers represent less than one third of all accounts classified in the utility data, these industrial sector customers represent nearly 43% of the consumption of all classified accounts.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 27 Table 11. Customer Count of Large C&I Population Summary (Number of Accounts)



### SIC Code Grouping Gas Service Electric Only Total

By SIC Code Grouping

01-09: Agriculture, Forestry and Fishing 0 2 2

10-14: Mining 0 3 3

15-17: Construction 2 1 3

20-39: Manufacturing 192 367 559

40-49: Transportation and P ublic Utilities 26 93 119

50-51: Wholesale Trade 9 21 30

52-59: Retail Trade 134 240 374

60-67: Finance, Insurance and Real Estate 46 97 143

70-89: Services 137 352 489

91-97: Public Administration 27 36 63

99: Non Classified Establishments 3 6 9

Not Provided 69 506 575

Total 645 1,724 2,369

By Commercial vs. Industrial

Commercial 384 851 1,235

Industrial 192 367 559

Not Provided 69 506 575

Total 645 1,724 2,369

Table 12. Electric Energy Consumption of La rge C&I Population Summary (kWh - 2007)

SIC Code Grouping Gas Service Electric Only Total By SIC Code Grouping 01-09: Agriculture, Forestry and Fishing 0 3,457,200 3,457,200 10-14: Mining 0 1,345,640 1,345,640
15-17: Construction 357,542 566,960 924,502 20-39: Manufacturing 522,971,163 942,650,275 1,465,621,438 40-49: Transportation and Public U tilities 50,356,974 184,107,025 234,463,999
50-51: Wholesale Trade 9,624,800 27,927,516 37,552,316
52-59: Retail Trade 184,430,793 395,511,692 579,942,485
60-67: Finance, Insurance and Real Estate 62,338,610 225,973,672 288,312,282
70-89: Services 165,927,326 567,668,427 733,595,753
91-97: Public Administration 34,460,608 51,171,299 85,631,907

99: Non Classified Establishments 2,094,145 3,322,085 5,416,230
Not Provided 48,549,165 240,062,143 288,611,309
Total (kWh) 1,081,111,126 2,643,763,935 3,724,875,061

By Commercial vs. Industrial
Commercial 509,590,798 1,461,051,516 1,970,642,314
Industrial 522,971,163 942,650,275 1,465,621,438
Not Provided 48,549,165 240,062,143 288,611,309
Total (kWh) 1,081,111,126 2,643,763,935 3,724,875,061Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 28 

### 2.2.1 Survey Respondent Characteristics The primary data collection efforts for this project included a combination of phone and site surveys of residential, commercial and industrial New Hampshire customers. The surveys were used to obtain a great deal of customer demographic information. The most relevant customer demographic information is summarized below; additi onal information obtained from the surveys is presented in Appendix J to this report.

Of residential survey respondents, 94% were permanent as opposed to seasonal residents, and nearly 80% of respondents owned the property they were living in. Over 53% of homes were more than 28 years old. Over 72% of respondents had completed at least some college and nearly 18% have completed postgraduate studies.

Among the small commercial and industrial respondents, 62% owned the property and 38% leased the space. 98.5% of respondents pay for electricity in the space. The mean square footage of the small commercial and industrial facilities surveyed was 11,747 square feet.

Among the large commercial and industrial respondents, 73% owned the property and 27% leased the space. The mean square footage of the large commercial and industrial facilities surveyed was nearly 90,000 square feet.



## 2.3 Forecasted Electricity and Natural Gas Sales in New Hampshire

Based on sales information provided directly by this project’s four participating electric utilities and two participating natural gas distribution companies, total and customer sector-specific energy (GWH), demand (MW) and fuel (MMBTu) forecasts were compiled. Where applicable, these forecasts were compared against relevant ISO-NE and EIA data to assess reasonableness. As shown in Figure 10, electric energy sales projected by the four participating electric utilities in New Hampshire is project ed to grow from approximately 11,200 GWH in 2008 to over 13,000 GWH by the year 2018. This represents an annual rate of 1.3 percent. This represents nearly 93 percent of the total electric energy sales in the state, when compared with ISO-NE’s latest forecast and appears reasonable gi ven that the utility forecasts do not include sales from a number of smaller municipal electric ut ilities that also serve customers in the state. Figure 11 shows how the utilities’ electric energy sales projections are broken down between residential, commercial and industrial customer sectors. The residential sector has the greatest sales, approximately 40 percent of total sales (4,537 GWH) in 2008, and is projected to grow slightly to 5,590 GWH by 2018 (representing a 1.7 percent annual growth rate). Commercial sector sales also currently make up approximately 40 percent (4,525 GWH) of the combined utilities’ total 2008 electric energy sales, and are projected to grow just slightly to 5,354 GWH by 2018 (a 1.4 percent projected annual growth rate). The industrial sector currently represents 19 percent of total 2008 sales (2,126 GWH) and is expected to stay fairly constant, dropping slightly to 2,103 GWH by the year 2018 (a 0.1 percent annual decline). This figure also shows approximately 42 GWH/year in projected street lighting sales (representing 0.3 percent of total projected sales in 2018).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 29 

### Figure 10. Forecasted Electric GWH Sales Total (2008 – 2018) - from Ut ility Data vs. ISO-NE
Projections

5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 15,000

2008 20 09 2010 20 11 2012 20 13 2014 20 15 2016 20 17 2018 Utility-Provided Forecasts (Total)

ISO-NE Forecast (NH Base)



### Figure 11. Forecasted Electric GWH Sales By Sector (2008 – 2018)

- 1,000 2,000 3,000 4,000 5,000 6,000

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Residential

Commercial

Industrial

Other EnergyFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 30 

### Electric system peak load for the combined four participating electric utilities in New Hampshire, as shown in Figure 12, is projected to grow from approximately 2,400 MW in 2008 to nearly 3,000 MW by the year 2018 (an annual rate of 1.8 percent). This represents nearly 95% of the state’s total forecasted electric demand, when compared with ISO-NE’s latest forecast, and appears reasonable given that the utility forecasts do not include peak load projections from a number of smaller municipal electric utilities that also serve customers in the state. Figure 13 shows how the utilities’ electric peak load projections are broken down between residential, commercial and industrial customer sectors. The commercial sector has the greatest peak demand, approximately 43 percent (1,023 MW) in 2008, and is projected to grow slightly to 1,279 MW by 2018 (representing a 1.8 percent annual growth rate). Residential sector demand currently makes up approximately 40 percent (962 MW) of the combined utilities’ total 2008 peak, and is projected to grow to 1,206 MW by 2018 (also a 1.8 percent projected annual growth rate). The industrial sector currently represents just under 17 percent of total 2008 peak load (962 MW) and is expected to grow to 498 MW by the year 2018 (a 1.9 percent annual increase). This figure also shows approximately 3 MW per year in projected street lighting demand (constant for the period 2008 through 2018).

Figure 12. Forecasted Electric Demand (MW) Total 2008 – 2018 - Utility Data vs. ISO-NE
Projections

1,000 1,500 2,000 2,500 3,000 3,500

2008 20 09 20 10 2011 2012 2013 20 14 20 15 2016 2017 20 18 Utility-Provided Forecasts (Total)

ISO-NE Forecast (NH Base)Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 31 

### Figure 13. Forecasted Electric Demand (MW) By Sector 2008 – 2018

- 200 400 600 800 1,000 1,200 1,400

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Residential

Commercial

Industrial

Other Peak



### In addition to electric energy and peak demand, this study estimates the potential for additional natural gas energy efficiency and related propane and fuel oil savings opportunities. As such, Figure 14, shows that natural gas sales is projected to grow from 20,640 MMBTu in period 2008 to 26,283 MMBTus by 2018 (an annual growth rate of 2 percent). 25 

### This compares reasonably

to the most recent data available from the US Department of Energy’s Energy Information Administration (EIA), where New Hampshire’s natural gas sales for 2007 was estimated to be 21,722 MMBTu. Figure 15 shows how New Hampshire’s the natural gas utilities’ MMBTu sales projections are broken down between residential, commercial and industrial customer sectors. The commercial sector has the greatest sales approximately 44 percent (9,428 MMBTu) in 2008, and is projected to grow to 12,666 MMBTu by 2018 (representing a 2.6 percent annual growth rate). Residential sector sales currently makes up approximately 36 percent (7,698 MMBTu) of the combined utilities’ total 2008 natural gas sales, and is projected to grow to 8,189 MMBTu by 2018 (a 0.6 percent projected annual growth rate). The industrial sector currently represents just over 19 percent of total 2008 sales (4,041 MMBTu) and is expected to grow to 5,428 MMBTu by the year 2018 (a 2.6 percent annual increase).

25 Based on participating New Hampshire Natural Gas distribution company-provided projections.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 32 

### Figure 14. Forecasted Natural Gas MMBTu Sales To tal (2008 – 2018) - Util ity Projections vs. EIA

Data

- 5,000 10,000 15,000 20,000 25,000 30,000

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Utility-Provided Forecasts (Total)

2007 EIA Estimate



### Figure 15. Forecasted Natural Gas MMBTu Sales By Sector (2008 – 2018)

- 2,000 4,000 6,000 8,000 10,000 12,000 14,000

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Residential

Commercial

IndustrialFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 33 

### New Hampshire’s electric and natural gas utilities have been operating energy efficiency programs for a number of years. The above fo recasts reflect the energy savings that have already resulted from these utilities’ previous efficiency program efforts.

In New Hampshire, as with all states, the growth in the demand for electricity and natural gas will vary by region where some regions may see much higher growth rates. On a statewide basis, however, areas showing faster growth are o ffset by slower growth areas of the state to produce an overall projected growth rate of approximately only 1.3, 1.8 and 2.0 percent for electric energy, demand and natural gas sales respectively.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 34 

# Section 3: Overall Project Implementation Approach

This section of the report presents an overview of the approach and methodologies used by the GDS Team for completion of each of the following tasks:

• Analyzing current saturations of energy using equipment and penetrations of energy efficiency equipment and practices in each end-use sector

• Producing an up-to-date list of currently av ailable and soon to be commercially available technologies which may play a part in future efficiency programs

• Estimating customer participation rates/levels by program, based on different payback/incentive levels and define/analyze significant barriers that customers face when investing in additional energy efficiency

• Developing, by sector, a simplified end-use model of state electricity and natural gas consumption and peak demand

• Estimating, state-wide and for each of the four New Hampshire retail electricity providers and two natural gas distribution companies, the technical, maximum achievable, maximum achievable cost effective, and potentially obtainable scenario for electricity, natural gas, and related propane and fuel oil savings over the next 10 year period, and the budgets (where appropriate) required to achieve that potential

• Evaluating extent to which past and current energy efficiency programs have achieved energy savings to date, provide sensitivity analysis of realized energy savings based on different resource levels (including absence of current SBC-funded model), and recommend modifications to program and me asure offerings that would increase the likelihood of achieving identified potential



## 3.1 Energy Using Equipment Saturations and Efficiency Penetrations Analysis

This task represents a major enhancement to technical potential studies that have been conducted across the country in the past. Rather than relying on best available information from existing secondary sources to estimate current levels of energy using equipment saturations and penetration of energy efficiency measures, significant primary data collection efforts were undertaken to help inform and derive New Hampshire-specific values where possible within the time requirements and work scope specified for this project. As such, this effort was completed through a combination of primary and secondary data collection and analysis activities.Detailed results and an assessment of the value resulting from this enhanced, New Hampshirespecific data collection effort is presented in Section 7 of this report. Following is a discussion of the methodologies utilized to complete this task.

First, a measure list was compiled, the approach for which is described in Section 3.2 below. The current saturation of each relevant type of energy using equipment and the penetration of associated energy efficiency equipment and practices was then determined. In this effort, it was important to recognize and quantify differences in end-use saturations and penetrations between the residential, commercial and industrial sectors, and building types within in each sector (see Table 13, Table 14 and Table 15).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 35 Table 13. Residential Sector Build ing Types and Energy Using Equipment

Building Types/Considerations

Single Family

Multi Family

Low Income

Existing Homes

New Construction

Energy Using Equipment/End-Use Measures

Appliances

Water Heating

Space Conditioning (heating/cooling)

Lighting

Building Envelope

Other (pools, standby power)

Table 14. Commercial Sector Building Types and Energy Using Equipment

Building Types/Considerations

Warehouse

Retail

Grocery

Office

Lodging

Health

Restaurant

Education

Other (assembly, etc.)

Existing Buildings/New Construction

Energy Using Equipment/End-Use Measures

Appliances, Computer s & Office Equipment

Water Heating

Space Heating

Space Cooling – Chillers

Space Cooling – Unitary & Split AC

Ventilation

HVAC Controls

Non-HVAC Motors

Building Envelope

Lighting

Lighting Controls

Refrigeration

Cooking

Compressed Air

Pools

Other (transformers)Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 36 Table 15. Industrial Sector Busine ss Types and Energy Using Equipment

Business Types/Considerations
Apparel And Other Finished Products Made From Fabrics And Similar

Materials

Chemicals And Allied Products

Electronic And Other Electrical Equipment And Components, Except Computer Equipment

Fabricated Metal Products, Except Machinery And Transportation Equipment

Food And Kindred Products

Furniture And Fixtures

Industrial And Commercial Machi nery And Computer Equipment

Leather And Leather Products
Lumber And Wood Products, Except Furniture

Measuring, Analyzing, And Controlling Instruments; Photographic, Medical, And Optical Goods; Watches And Clocks Miscellaneous Manufacturing Industries
Paper And Allied Products
Petroleum Refining And Related Industries
Primary Metal Industries Printing, Publishing, And Allied Industries

Rubber And Miscellaneous Plastics Products
Stone, Clay, Glass, And Concrete Products

Textile Mill Products

Tobacco Products Transportation Equipment Energy Using Equipment/End-Use Measures

Conventional Boiler Use
CHP and /or Cogeneration Process
Process Heating
Process Cooling and Refrigeration

Machine Drives

Electro-Chemical Processes

Other Process Use
Facility HVAC Facility Lighting
Other Facility Support
Onsite Transportation

Conventional Electric Generation

Other Non-Process Use



### As noted above, a combination of primary and secondary data collection and analysis activities were conducted by the GDS Team to develop the New Hampshire sector and building-specific saturation and penetration rates used for this r eport. Primary data collection consisted of telephone surveys of a statistically valid sample of residential and small commercial/industrial customers (400 residential customers and 200 small co mmercial customers) and site visits for a sample of 100 larger commercial and 100 industrial customers.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 37 

### 3.1.1 Survey Instruments and Site Visit Data Collection Forms The process of developing survey questions and site visit data collection forms was mostly dictated by the types of data required by the computer models being used by the GDS Team to estimate energy saving potential. For the questions that examined current saturations and penetrations of energy efficient equipment and practice s, GDS first identified a list of currently and soon-to-be commercially available technologies that may play a part in future efficiency programs; then specific questions that address these technologies were developed.

For the phone surveys, survey inst ruments from two existing studies served as references: the 2004 California Statewide Residential Appliance Saturation Study (for the residential questionnaire), and the U.S. Department of Energy’s 2003 Commercial Buildings Energy Consumption Survey (for the small commercial/industrial questionnaires). For the site visit data collection forms, instruments based on somewhat relevant previous projects were used as a starting point. In addition, the survey instru ments included questions to explore customers’ attitudes toward and perceptions of energy efficiency. These questions addressed factors that affect the adoption of energy efficiency measures, significant barriers customers may face when investing in energy efficiency measures, awarene ss of energy efficiency, program participation and satisfaction, and past purchase practices. A major challenge in this effort was to develop instruments that would provide useful inform ation on a number of important energy end-use measures, without requiring respondents to spend too much time on the phone, or on site. Targeted durations of 15 minutes per phone survey and 2.5 hours per site visit were set.

New Hampshire Public Utility Commission reviewed preliminary research instruments, both for the phone surveys and site visits, in several phone conferences, and discussed their priorities with the GDS Team. Based on these discussions, RIA finalized the phone survey instruments

for the residential and the small commercial/indus trial surveys which primarily asked questions in a closed-ended format, with a few opportunities for verbatim responses. GDS and RLW

finalized the site visit data collection forms using identical questions from the phone surveys wherever practical and a tabular format for collection of end-use area and measure specific saturation and penetration data. Appendix A presents the Team’s Residential Sector Telephone Survey. Appendix B is the Small Commercial/Industrial Sector Telephone Survey. Appendix C provides a copy of the On-Site Data Collect ion Instrument for the Larger Commercial and

Industrial Sector.



### 3.1.2 Sampling The sampling plans for residential and small commercial/industrial telephone surveys were developed based on records received from each of the electric and gas utilities. Records that represented duplicates due to multiple program participation were combined and participation codes were retained for programs. In residential accounts, all low-income customers were identified based on their rate code or income flag. Identified low-income customers represented 5% of the customer accounts received. A similar approach was taken with the small commercial/industrial accounts, which were also screened to ensure that all electric accounts had less than 100kW demand or 300,000 kWh annual consumption.

By definition, all records for gas utility customers are duplicates since all gas customers also are customers of one of the electric utilities and would be included in those records. Therefore, as an initial step, each gas customer record was matched by telephone number to one of the electric utilities. The next step was to remove records with no phone number. Table 16 and Table 17 display the final sample quotas for the residential and small commercial/industrial phone surveys. As shown in Table 16, quotas were included in the residential sample to ensure representation from both the non-low-income and low-income populations, and for electric and gas customers associated with each of the four major electric and two major natural gas utilitiesFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 38 

### in the state. The residential sample is designed to achieve 5 percent precision at a 95 percent confidence level, with 10 percent precision and 90 percent confidence level for each of the

utilities. 26

Table 16. Sample Quotas - Residential NH Electric and Gas Utilities

Utility Non Low Income Low Income

Total Random

Draw Electric Only w/Gas

Service N Random

Draw Electric Only w/Gas

Service N

PSNH 3,500 142 33 175 300 12 3 15 190

NH Electric Coop 1,280 52 12 64 120 5 1 6 70

Unitil 1,280 52 12 64 120 5 1 6 70

Granite

State

Electric 1,280 52 12 64 120 5 1 6 70

Totals 7,340 298 69 367 660 27 6 33 400



### As shown in Table 17, specific quotas were also included with the small commercial/industrial sector to ensure representation from both electric and gas customers. This small commercial/industrial sample is designed to achieve 5 percent precision at the 85 percent confidence level, with 12 percent precision at the 85 percent confidence level for each of the

utilities.

Table 17. Sample Quotas – Small C/I NH Electric and Gas

Utility Random

Draw N

Total Electric Only Gas Service

PSNH 3,325 87 8 95

NH Electric Coop 1,225 32 3 35

Unitil 1,225 32 3 35

Granite State Electric 1,225 32 3 35

Totals 7,000 183 17 200



### In the end, 411 interviews with residential customers and 200 interviews with small commercial/industrial customers were completed. As shown in Table 18 and Table 19, over 6,100 and 4,000 calls to residential and small commercial customers respectively had to be made to fill the 400/200 quotas targeted. More information and summary results from the phone survey efforts are presented later in this report.

Table 18. Disposition of Residential Survey

DISPOSITION TOTAL % TOTAL

Complete 411 6.7%

No answer 789 12.8% Answering machine 2,838 46.1% Busy 167 2.7%

Bad number 476 7.7%

Fax number 29 0.5% Call intercept 7 0.1% Appointment 451 7.3%

First refusal 214 3.5%

26 . Estimates for subgroups within the residential sample, including the low-income estimates, are based on smaller sample sizes. Thus the margin of error for these estimates is higherFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 39 DISPOSITION TOTAL % TOTAL

Second refusal 549 8.9% Language barrier 24 0.4% No eligible respondent 24 0.4%

Business – NPR 95 1.5%

Never call 15 0.2%

Quota full 0 0.0%

Partial – Callback 39 0.6%

Partial – Refusal 31 0.5% TOTAL DIALINGS 6,159 100% INCIDENCE (%) 95.46

Table 19. Disposition of Sm all Commercial/Industrial Survey

DISPOSITION TOTAL % TOTAL

Complete 200 4.9%
No answer 1,750 43.1% Answering machine 81 2.0% Busy 151 3.7%

Bad number 135 3.3%

Fax number 25 0.6% Updated contact 176 4.3% Appointment 815 20.1%

First refusal 61 1.5%

Second refusal 285 7.0% Language barrier 3 0.1% No eligible respondent 12 0.3%

Private residence 194 4.8%

Never call 3 0.1%

Quota full 0 0.0%

Partial – Callback 55 1.4%

Partial – Refusal 25 0.6% Own but not occupy 10 0.3%

Residential use 6 0.2% Made at corporate 76 1.9% TOTAL DIALINGS 4,063 100% INCIDENCE (%) 73.13



### A key element of the larger commercial and industrial on-site surveys was the systematic selection of sample points to visit. As originally proposed, 200 site visits were targeted for performance overall. A sample size of 68 prov ides an expected absolute precision of 10% for proportional results. This suggests that a sample size of 200 can be considered adequate for the consideration of targeting sub-groups of the sample such as commercial versus industrial or fuel types (gas).
Table 20 below presents the number of accounts determined to be Large C&I after identifying 27


### them from the sponsor provided electric custom er data. The overall number of estimated large commercial and industrial accounts is 2,369. In summarizing data by SIC code in the top portion of the table, information provided by t he sponsors during the data acquisition/submission process was used. Not all sponsors had SIC code information available for use, but based upon the SIC information received, manufacturing, services and retail trade were the three largest sectors observed. The bottom portion of the table allocates those SIC codes associated with Manufacturing as Industrial and the remainder as Commercial. Just over 31 percent of

those accounts classified in the data are industrial accounts.

27 For PSNH, Large C&I were defined as their rate code GV or LV. For Unitil, they were defined as having a demand greater than 100 kW based upon a provided Total Demand field or as having more than 300,000 kWh of annual consumption if demand was not available. Similarly for National Grid they were defined as cu stomers having a demand greater than 100 kW based upon a provide d Average Bill Demand kW field or as having more than 300,000 kWh/ye ar if demand was not available. NHEC provided a list of Small C&I customers as queried to meet the study designated Sma ll C&I definition of accounts with less than 100 kW of demand
when available, otherwise less than 300,000 kWh/year.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### To identify gas customers, the GDS Team gathered gas customer data from the sponsors. Using the address, company name, and phone numbers within the gas customer data, a total of 645 customers within the large C&I electric cu stomer dataset were identified as having gas service. There are sure to be more gas customers in the sample frame beyond those identified. In fact we received a total of 12,178 total (small and large) gas commercial or industrial customer records from National Grid and Northern Utilities from which the 645 Large Commercial and Industrial accounts were successfully mapped in to the dataset of identified large electric Commercial and Industrial customers. This identified group represents just over 31 percent of the Large C&I population gathered from the electric sponsors.

Table 20. Large C&I Population Summary (Accounts)

SIC Code Grouping Gas Service Electric Only Total

By SIC Code Grouping

01-09: Agriculture, Forestry and Fishing 0 2 2

10-14: Mining 0 3 3

15-17: Construction 2 1 3

20-39: Manufacturing 192 367 559

40-49: Transportation and Public Utilities 26 93 119

50-51: Wholesale Trade 9 21 30

52-59: Retail Trade 134 240 374

60-67: Finance, Insurance and Real Estate 46 97 143

70-89: Services 137 352 489

91-97: Public Administration 27 36 63

99: Non Classified Establishments 3 6 9

Not Provided 69 506 575

Total 645 1,724 2,369

By Commercial vs. Industrial

Commercial 384 851 1,235

Industrial 192 367 559

Not Provided 69 506 575

Total 645 1,724 2,369



### Table 21 below presents the electrical consumption (kWh) of the Large C&I customers, also by SIC Code and Commercial versus Industrial. The overall amount of electric consumption among the large Commercial and Industrial sample frame is estimated to be 3,725 GWh. Although the industrial accounts represent a third of the accounts classified in the sponsor data, they represent nearly 43 percent of the c onsumption of all classified accounts.

Table 21. Large C&I Population Summary (kWh)

SIC Code Grouping Gas Service Electric Only Total

By SIC Code Grouping

01-09: Agriculture, Forestry and Fishing 0 3,457,200 3,457,200

10-14: Mining 0 1,345,640 1,345,640

15-17: Construction 357,542 566,960 924,502

20-39: Manufacturing 522,971,163 942,650,275 1,465,621,438

40-49: Transportation and Public Utilities 50,356,974 184,107,025 234,463,999

50-51: Wholesale Trade 9,624,800 27,927,516 37,552,316

52-59: Retail Trade 184,430,793 395,511,692 579,942,485

60-67: Finance, Insurance and Real Estate 62,338,610 225,973,672 288,312,282

70-89: Services 165,927,326 567,668,427 733,595,753Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 41

91-97: Public Administration 34,460,608 51,171,299 85,631,907

99: Non Classified Establishments 2,094,145 3,322,085 5,416,230

Not Provided 48,549,165 240,062,143 288,611,309

Total 1,081,111,126 2,643,763,935 3,724,875,061

By Commercial vs. Industrial

Commercial 509,590,798 1,461,051,516 1,970,642,314

Industrial 522,971,163 942,650,275 1,465,621,438

Not Provided 48,549,165 240,062,143 288,611,309

Total 1,081,111,126 2,643,763,935 3,724,875,061



### Based upon the exploration of the Large C&I data gathered, a sample approach that targeted large industrial and large commercial equally seemed reasonable – particularly given that the modeling and analysis of additional energy efficiency potential will be done discretely for each and that the consumption of industrial versus commercial accounts is moderately close to 50/50.

The sample design requested in the RFP asked for adequate representation of each sponsor (i.e., the four electric utilities and the two natural gas distribution companies) in the final sample. Table 22 presents the number of accounts by utility for electric and gas as determined from aggregating the entire large commercial and industrial electric customer information and an effort to map in information from the gas utilities based upon information in common fields.

Table 22. Large C&I Accounts by Sponso r and by Commercial versus Industrial

Utility Commercial Industrial Unclassified Total

N % N % N % N %

Electric

NHEC 15 1% 0 0 316 57% 331 14%

PSNH 1,012 83% 492 88% 8 1% 1,512 65%

Unitil 84 7% 12 2% 158 29% 254 11%

GSE 112 9% 58 10% 71 13% 241 10%

Total 1,223 100% 562 100% 553 100% 2,338 100%

Gas

National Grid 232 61% 142 74% 30 82% 404 63%

Northern 149 39% 50 26% 42 18% 241 37%

Total 381 100% 192 100% 72 100% 645 100%



### Due to an inability to fully categorize all of the sponsor information by the various sectors among electric customers, the GDS Team felt that the best approach to sampling for the large C&I site visits would be to target 100 commercial facilities and 100 industrial facilities with minimum sample quotas for each electric utility with an overall quota for gas customers. Such a sample would further seek to balance the need for targeting the number of large C&I customers from each sponsor to their approximate portion of the total (with a minimum quota size of 7) with the need to visit customers with gas use. This would be done iteratively as the recruitment process proceeds depending upon the actual incidence of gas customers among the recruited Large C&I sample frame (discussed later).

Table 23 below provides the GDS Team’s proposed sample design in which we have allocated the targeted visits within the commercial and industrial categories similarly as the proportion of accounts by utility in each category are very similar (Table 22). The predicted gas column inFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 42 

### Table 23 provides an estimate of the number of gas customers that would naturally fall into the sample for each sponsor given the identified gas customers in each sector – along with the gas utility they are likely to represent. An estimated 64 gas customers were anticipated to be recruited naturally in this regard, comprised of 30 in the large commercial sector and 34 in the industrial. Given the interest in gas measures as part of this study, the GDS Team believed that additional targeting of this group of customers was needed. Therefore, visiting 68 gas customers overall was suggested, which targets a 90 percent confidence with +/-10 percent relative precision for proportional results. Therefore, depending on the incidence of gas customers experienced in the recruitment process, an additional 4 gas sites may need to be explicitly targeted to achieve a total of 68.

Table 23. Large C&I Sample Design

Utility Large Commercial Large Industrial

N Predicted Gas Subset N Predicted Gas Subset

NHEC 7 0 7 0

PSNH 76 16 NGRID and 9 Northern 75 21 NGRID and 7 Northern

Unitil 8 2 NGRID and 1 Northern 7 5 NGRID

GSE 9 2 (Northern) 11 2 (Northern)

Total 100 30 100 34



### In the end, all the electric utility-specific quotas were met for both the commercial and industrial sectors. The predicted gas utility subsets were exceeded (23 Northern Utility completes vs. predicted 21, and 59 National Grid completes vs. predicted 44).

Scheduling and fielding began on June 9 th 

### and all site visits were completed before August 9 th



### , 2008. Advance letters were sent by the PUC to 500 randomly selected customers within the quota areas targeted and a drawing for a $500 gift card was offered to increase likelihood of participation. 28 

### Appendix D provides a copy of t he PUC advance letter and the GDS Team’s recruiting script. Although the GDS Team was able to achieve a 40% response rate (200 completes, out of a 500 customer sample frame), as discussed in more detail in the section below, the time required to recruit, schedule and conduct the site visits, and hard enter and analyze all resulting data greatly exceeded original estimates.



### 3.1.3 Data Collection and Analysis The telephone interviews were conducted from RKM Research and Communication’s call center using trained, professional survey managers and in terviewers who utilized a computer assisted telephone interviewing (CATI) system. All staff were thoroughly trained as to the nature of the study, the importance of the information being collected, and management of the sample. Before the final data collection phase, RKM conducted a pretest with 20 residential and 22 commercial/industrial completes to identify any problems the respondents or interviewers might have understanding questions, or with the survey length. Some modifications were made to questions based on the results of the pretest, but these were insignificant and the total number of pretests was included in the final dataset.

Fielding of the phone surveys was conducted from June 17 th 

### through 26 th 

### , 2008, during the day, evening, and weekend hours to reach as many targets as possible. The average length of the

28 NH Industries, Lebanon, NH was the winner of the drawing held on September 5 th at the PUC offices. Instead of a $500 gift card, per their request, a charitable donation was made on their behalf to the United Way of the Upper Valley.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 43 

### survey was 16 minutes for the residential survey and 17 minutes for the small commercial/industrial survey. To counteract non-response bias, up to six attempts per telephone number were made to complete the surveys. All soft refusals were put into a separate sample file and were assigned to different interviewers to call back. All were called back except those refusals received in the very la st days of the study, as a result of the waiting period between when the initial refusal was received and when the callback was attempted. Detailed call disposition information was presented earlier in Table 18 and Table 19. The completed survey data was analyzed using SPSS statistical software and appropriate data entry accuracy verification and data cleaning procedures.

The site visits were conducted by experienced RLW and GDS engineers and trained staff. Starting with development of the site visit data collection form, key staff from both RLW and GDS (including a number of those that would be c onducting the actual site visits) were actively involved in the development of the form and the planning/scheduling approach for the site visits. All dedicated site visit staff (totaling more than 8 individuals) were thoroughly trained as to the nature of the study, the importance of the in formation being collected, and management of the sample.

As part of the initial data collection phase, RLW and GDS staff pretested the site visit data collection form by jointly conducting visits during the first two weeks in the field to identify any problems the auditors might have understanding questions or with the visit length, collecting the required measure data, and ensuring consistency of interpretation and treatment of equipment and situations encountered in the field by multiple auditors. Some modifications were made to implementation approaches based on the results of the pretest, but these were insignificant and the total number of pretests was included in the final dataset. Open and regular communication between the multiple auditors was encouraged and conducted throughout the site visit fielding period to maximize consistency.

Fielding of the site visits was conducted from June 9 th 

### through August 9 th 

### , 2008, during the workday hours to reach as many targets as possible. The average length per site visit was 3.25 hours. Project sponsors were kept aware of weekly schedules and attended as observers on a number of the site visits. To counteract non-response bias, up to six attempts per potential respondent were made to recruit facilities for the site visits. After identifying the correct person or persons to speak with at the targeted facility, all soft refusals or referrals to other personnel within the office or corporate headquarters location, were noted in the sample file and called back. All were called back except those refusals received in the very last days of the study, as a result of the waiting period between when the initial refusal was received and when the callback was attempted. After preparing the random sample required to fill specified quotas, additional facility names were not added until a direct refusal was received or six attempts were made to recruit each facility on the quota list.

The completed survey data for each site was recorded in paper files (22 pages per completed site visit) and was entered manually into an analyzable Excel spreadsheet file. Direct conversations between data entry personnel and field data collection staff were held when necessary to ensure proper interpretation of field notes. Data entry accuracy verification and data cleaning procedures were employed and analyses were conducted using pivot tables and targeted data mining where appropriate.



### 3.1.4 Derivation of Saturation and Penetrat ion Values and Weighting of Results Results from the phone surveys and site visits were analyzed to derive values for saturation of energy using equipment and penetration of energy efficiency equipment and practices, where applicable, in each end-use sector. Results from these analyses are discussed in more detail inFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 44 

### Section 7 of this report. For the residential sector and small commercial/industrial sector phone surveys, multiple cross tabulations were run to identify appropriate measure-specific responses based on heating source, single and multifamily housing types, building type and numerous

other relevant variables.

For the larger commercial and industrial facility results, values were derived using multiple pivot tables. In all cases where sufficient responses existed (N>30, or lower if deemed to be reasonably representative of the building type of interest), values from the site surveys were reported for the specific building type. Otherwise, values were averaged across and applied to all building types for a specific measure. Thi s was done to ensure that statistical validity was maintained in the model and that results were not skewed by a small number of responses.

Results from the small commercial and industrial phone surveys and large commercial and industrial site visits were combined using a weighted average. The weighting factors were developed using customer-specific energy sales in formation provided by the electric and gas utilities for their small (less than 100kW demand) and large customers. The weighting factors were based on the ratio of total electrical consumption in the small commercial and industrial sector compared to total electrical consumption in the large commercial and industrial sector. This ratio was applied to the results for the small and large customers to determine a weighted average for both the electric and non-electric models.

Excellent New Hampshire-specific information was collected on saturations and penetrations (referred to in our models as base and remaining factors) for a number of residential, commercial and industrial energy using equipment through the phone surveys and site visits conducted as part of this project. Such real customer-specific values have typically not been collected as part of the numerous technical potential studies that have been completed to-date for others across the country. Given the extensive list of measures identified for assessment in this study (as discussed in more detail in the section below), it was not possible to develop survey and site visit instruments of sufficient dep th and breadth to collect information from which to derive values for all measures of interest to the Commission, OCA and the project’s participating utilities. As such, in numerous cases, secondary sources for penetration and saturation data were identified, used and documented. Wherever possible, these secondary sources were verified for reasonableness, or modified based on results obtained through this project’s primary data collection activities.



## 3.2 Measures List Development

This task was initially proposed to be based mainly on the GDS Team’s existing information and databases of sector-specific electricity, gas and other fossil fuel end-use technologies and efficiency measures, and was to be supplemented as necessary to ensure inclusion of other technology areas of interest to the Commission, the OCA, and the four electric and two gas utilities supporting this project. Initial lists of electric and natural gas measures were compiled by GDS for the state’s residential, commercial and industrial customer sectors, and were shared with the project sponsors on April 3 rd 

### for review and comment. As shown in Table 24, Table 25, and Table 26, these initial sector-specific lists contained a total of 252 unique measures (79 residential, 130 commercial, and 43 industrial).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 45 Table 24. Measure End Uses and Number of Measures Per End Use – Residential

Residential Sector

Electric Measures Non-Electric Measures Appliances 9 2 Dryers Lighting 4 7 Building Envelope Space Heating, Cooling and Building Envelope 21 8 Space Heating, Cooling and Building Envelope Water Heating 9 13 Water Heating Standby Power 1 -

Pools 1 -

New Construction 1 -

Low Income 3 -

Total Measures in Sector 49 30 79 (total)

Table 25. Measure End Uses and Number of Measures Per End Use - Commercial

Commercial Sector

Electric Measures Non-Electric Measures Space Heating 3 17 Space Heating Water Heating 5 12 Water Heating Building Envelope 2 7 Building Envelope Space Cooling – Chillers 3 3 Pool heating Space Cooling – Packaged AC 8 1 Dryers Space Cooling – Maintenance 3 6 Cooking

HVAC Controls 4 -

Ventilation 11 -

Motors 2 - Lighting 20 - Lighting Controls 7 - Refrigeration 12 - Compressed Air 2 - Monitor Power Management 1 -

Transformers 1 -

Total Measures in Sector 84 46 130 (total)

Table 26. Measure End Uses and Number of Measures Per End Use - Industrial

Industrial Sector

Electric Measures Non-Electric Measures Process Heating 1 2 Process Heating Process Cooling & Refrigeration 1 20 Space Heating Machine Drives 1 5 Water Heating Facility HVAC 1 7 Building Envelope Facility Lighting 1 - Other Facility Support 1 - Onsite Transportation 1 -

Sensors & Controls 1 -

Other End Uses 1 -

Total Measures in Sector 9 34 43 (total)



### Following multiple meetings and discussions over the subsequent 5 month period, ending September 26 th 

### , 2008, these lists grew by nearly a factor of two to 471 individual measures as shown in Table 27, Table 28 and Table 29. A significant amount of time was also expended during this period identifying, reviewing and documenting secondary and other available data sources to develop reasonable assumptions regarding measure lives, installed incremental and full costs (where appropriate), and electric energy, demand, and MMBTu savings associated

with each of the measures included on the final lists. 29 

### Please refer to Appendix E for a comprehensive listing of all residential electric and non-electric measures and associated

29 The GDS Team’s existing sector-specific technical potential calculation models were also modified substantially during this period to accommodate the large increase in the number of measures and expanded measure categories to

be assessed.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 46 

### assumptions and sources assessed in this report. Appendix F and Appendix G provide similar detailed information for the commercial and industrial sectors respectively. 30

Table 27. Measure End Uses and Number of Measures Per End Use - Residential

Residential Sector

Combined Electric and Non-Electric Measures Appliances 17 Lighting 13 Space Heating and Cooling 59 Building Envelope 75 Water Heating 41 Standby Power 3

Pools 9

New Construction Addressed in Building Envelope

Measures Low Income

Total Measures in Sector 217 total (up from 79)

Table 28. Measure End Uses and Number of Measures Per End Use - Commercial

Commercial Sector

Electric Measures Non-Electric Measures Appliances/Office Equipment 7 - Space Heating 3 30 Space Heating Water Heating 12 17 Water Heating

Pools 7 5 Pools Building Envelope 5 13 Building Envelope Space Cooling – Chillers 7 2 Space Cooling – Chillers Space Cooling – Packaged AC 11 5 Process Heat Cooking 6 10 Cooking

HVAC Controls 8 7 HVAC Controls

Ventilation 17 6 Ventilation

Motors 2 - Lighting 28 - Lighting Controls 12 - Refrigeration 18 - Compressed Air 2 -

Transformers 1 -

Total Measures in Sector 146 95 241 total (up from 130)

Table 29. Measure End Uses and Number of Measures Per End Use - Industrial

Industrial Sector

Electric Measures Non-Electric Measures Process Heating 1 1 Process Heating Process Cooling & Refrigeration 1 1 Conventional Boilers

Machine Drives 1 - Facility HVAC 1 1 Facility HVAC Facility Lighting 1 - Other Facility Support 1 1 Other Facility Support Onsite Transportation 1 -

Sensors & Controls 1 -

Other End Uses 1 -

Total Measures in Sector 9 4 13 total (down from 43)

30 Although the measures lists are extens ive, they are not exhaustive, particularly for potential fuel oil and propane savings. Some potential measures were identified that were not modeled due to data or other limitations. These include, but are not limited to air conditioning peak demand savings from off peak cooling with energy storage, more advanced windows than double pane with low-E, super high efficiency gas condensing hot water heaters used particularly in combo systems that provide both space an d hot water heating, data center and certain information technology potential energy saving measures, and some emerging but not yet commercialized technologies.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 47 

## 3.3 Customer Program Part icipation Rates and Barriers

Estimates of customer participation rates/levels by program and identification of barriers that customers face when investing in additional energy efficiency were developed based mainly on direct results from the GDS Team’s phone survey s and site visits. Specifically, for each customer sector, questions were asked to assess customers’ attitudes towards energy efficiency, past program participation and satisfaction, and barriers that might be preventing them from making future investments in energy efficiency.



### 3.3.1 Residential Customer Attitudes The residential survey included questions about respondents’ attitudes toward energy efficiency. More specifically, these questions attempted to explore respondents’ level of consideration of energy saving and to assess factors that affect the adoption of energy efficiency measures. First, the respondents were asked to rate the level of attention their household pays to controlling energy costs through general energy efficiency operational practices such as adjusting room temperatures, shutting computer s and lights off, etc. Table 30 provides the result. In general, the level of attention paid to controlling energy cost seems high. About two thirds (63 percent) said they pay “substantial attention,” and 30 percent said they pay “some attention.” Only a small percentage of the respondents said they pay “very little” or “no attention” to these matters (6 percent).

Table 30. Attention Paid to Co ntrolling Household Energy Costs

Frequency Valid Percent

Substantial attention to these matters 256 63.4%

Some attention 121 30.0%

Very little attention 20 5.0%

No attention 5 1.2%

Don’t know 2 0.5%

Total 404 100%



### Respondents rated their likelihood of purchasing energy efficient equipment instead of standard equipment given several conditions generally a ssumed to increase the attractiveness of adopting energy efficient equipment. Just before introducing this question, the term “energy efficient equipment” was defined by stating “I am referring to new equipment specifically designed to be more energy efficient than other new models. Energy efficient models typically cost more than other models, perhaps 20-30 percent more.” The order of these factors was randomized to avoid any response biases. The result is shown in Table 31. Overall, it seems the respondents found these factors appealing. In particular, a high percent of respondents (78 percent) said they would be “extremely likely” to purchase energy efficient equipment if their monthly energy bill would be less. This was rated significantly higher than any other factor ( p <.05). The next highest rated factors were increased comfort, increased home value, feeling pro-environment, and receiving a rebate (more than 70 percent of the respondents said they are “extremely likely” to choose energy efficiency equipment as a result of these factors). 31 

### In contrast, “sales persons’ recommendation” was rated significantly lower than any other factors ( p <.05). Twenty-four percent reported they were “not at all likely” and 35 percent said they were “extremely likely” to purchase energy efficient equipment over standard item s given this (sales person recommendation) condition.

31 Respondents with lower educational achievem ent rated this factor significantly lower ( p <.05).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 48 Table 31. Likelihood of Purchasi ng Energy Efficient Equipment

1=NOT AT

ALL

LIKELY 2 3 4 5=

EXTREMELY

LIKELY TOTAL

a... your monthly energy bill would be

less N 12 1 22 50 306 391

Row % 3% 0% 6% 13% 78% 100%

b... it increased the

level of comfort N 22 7 31 55 276 391

Row % 6% 2% 8% 14% 71% 100%

c... you felt you were helping to protect

environment N 29 8 24 55 278 394

Row % 7% 2% 6% 14% 71% 100%

d... it increased the

home value N 23 7 26 30 224 310

Row % 7% 2% 8% 10% 72% 100%

e... you received a

rebate N 33 2 29 53 278 395

Row % 8% 1% 7% 13% 70% 100%

f... your sales

person recommended it N 91 25 74 59 134 383

Row % 24% 7% 19% 15% 35% 100%

Note: “Don’t know” responses were treated as missing data. Frequency of “it increased the home value” (d) is

shown only if the respondents were home owners.



### Table 32 shows factors respondents identified as barriers to investing in energy efficiency measures. The table provides a coded summary of the open-ended responses. Nearly three quarters of the responses dealt with uncertainty of payback and initial higher upfront costs (71 percent). In a distant second place, 10 percent of respondents said that current equipment is meeting their needs; 5 percent said they are renters and not able to do home improvements. Six percent of the respondents were concerned about various aspects of energy efficient equipments such as quality, design, features, and safety.

Table 32. Primary Reasons for Not Purchasing Effi cient Equipment/Making E fficiency Improvements



### Frequency Valid Percent

Cost / benefit, payback 189 71%
Current equipment is satisfactory 27 10%
Renters, not owners of property 14 5%
Quality concern 10 4%

Concerned about cosmetics, features 3 1%
Concerned about safety 2 1%

Other 20 8%

Total 265 100%

Note: “Don’t know,” “refusal,” and “no reason ” responses were treated as missing data.



### 3.3.2 Residential Customer Program Awareness and Participation Finally, the surveyed households were asked about their awareness of and participation in their utilities’ energy efficiency programs. Table 33 shows the respondents’ awareness of theirFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 49 

### utilities’ energy efficiency programs. Overall, approximately 50 percent of the households know their utility offers energy efficiency programs. NH Electric Coop’s customers have the highest awareness level (61 percent) and Granite State Electric’s customers have the lowest awareness (42 percent) of their utilities’ efficiency programs. 32 

### However, the differences in customers’ awareness among the four utilities were not statistically significant.

Table 33. Awareness of Utility’ s Energy Efficiency Programs

GRANITE

STATE

ELECTRIC NH

ELECTRIC

COOP PSNH UNITIL TOTAL

Yes N 28 41 89 35 193

Column % 41.8% 61.2% 47.1% 51.5% 49.4%

No N 39 26 100 33 198

Column % 58.2% 38.8% 52.9% 48.5% 50.6%

Total N 67 67 189 68 391

Column % 100% 100% 100% 100% 100%

Note: “Don’t know” responses were treated as missing data.



### Table 34 shows the respondents’ participation in their utilities’ energy efficiency programs, including participation by purchasing products promoted through these programs. Of the respondents who are aware of their utilities’ program, the overall participation rate was 31 percent (15 percent of the sample population). There was no difference in the participation rates among the four utilities. One interesting finding was that the low income households reported significantly higher parti cipation in efficiency programs. 33 

### The low income group was about twice as likely to have participated in such programs (58 percent) as the non-low income group (29 percent). Though not shown in the table, the data indicate an extremely high rate of satisfaction among participants. Almost all participating respondents reported they would participate again in their utilities’ efficiency program if they have a future opportunity. Satisfaction and interest in repeat participation was equally high among both low and non-low income groups.

Table 34. Participation in Utilit y’s Energy Efficiency Programs

GRANITE

STATE

ELECTRIC NH

ELECTRIC

COOP PSNH UNITIL TOTAL

Yes N 9 14 28 8 59

Column % 33.3% 34.1% 31.8% 23.5% 31.1%

No N 18 27 60 26 131

Column % 66.7% 65.9% 68.2% 76.5% 68.9%

Total N 27 41 88 34 190

Column % 100% 100% 100% 100% 100%

Note: This question was asked only if the previous questi on (PS1) is “yes”. “Don’t kn ow” responses were treated

as missing.

32 It is important to note that Granite State Electric customers differed significantly from those of the other utilities, having a larger proportion of lower income families an d the demographic characteris tics associated with that.

33 Low income was defined as 183% of Federal Poverty line (per utility low income program eligibility criteria).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 50 

### For those who reported not participating in their utilities’ energy efficiency program, an additional question was asked about the reasons why they have not participated. Each possible reason was read by interviewers and the respondents were allowed to provide multiple reasons. If a respondent agreed that a certain reason contributed to their non participation, they were considered to have “endorsed” that particular reason.

Table 35 summarizes the responses. The most frequently mentioned reason was they have not recently purchased items that use energy (44 percent). The next most frequent reasons for nonparticipation seem to relate to their lack of awareness of or knowledge about utility efficiency programs. Twenty-eight percent reported they “did not know they are eligible,” followed by “did not know how to find out about the program” (18 percent). It is possible that some respondents have not made recent purchases because they are unaware of programs that may alleviate their financial concerns about investing in energy efficient products. Several other reasons were mentioned with notably high frequencies. Those are: the sales person did not mention the program (13 percent), insufficient incentive (12 percent), bought unqualified equipment (11 percent), and “was not worth the hassle” to participate in programs (10 percent).

Table 35. Possible Reasons for Not Partic ipating in an Energy Efficiency Program

ENDORSED NOT ENDORSED TOTAL

Haven’t recently purchased items N 59 75 134

Row % 44% 56% 100%

Didn’t know I was eligible N 37 97 134

Row % 28% 72% 100%

Don’t know how to find out more

about program N 24 110 134

Row % 18% 82% 100%

Sales person didn’t talk about

program N 18 116 134

Row % 13% 87% 100%

Incentives were not enough N 16 118 134

Row % 12% 88% 100%

Have purchased items but not

energy efficient N 15 119 134

Row % 11% 89% 100%

Wasn’t worth the hassle N 13 121 134

Row % 10% 90% 100%

Renter, not owner (from “other:

specify”) N 3 131 134

Row % 2% 98% 100%

No need (from “other: specify”) N 3 131 134

Row % 2% 98% 100%

Other N 11 123 134

Row % 8% 92% 100%

Note: Respondents were allowed to provide multiple answers to this question, and later all responses were

coded. Thus, the N=134 represents t he total number of valid responses.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 51 

### 3.3.3 Residential Customer Program Pa rticipation and Barriers Summary Installation of energy efficiency features are commonly considered as part of remodeling projects (64 percent among recently remodeled homes, and 90 percent among homes with a future remodeling plan). About half of the households surveyed are aware of their utility offering energy efficiency programs, and 30 percent have participated in them in some way. Low income households were found to have a significantly higher participation rate—they are twice as likely to report participating in such programs (one likely reason for this higher participation could be the fact that these households qualify to receive rebates of 100%). Among participants, satisfaction with their utilities’ programs seems extremely high. The mostfrequently cited reasons for nonparticipation were there were no recent purchase of energyusing household items, and unawareness of program resources. It is possible the former reason may be triggered by the latter reason—that is, they have not made a recent purchase of efficient products because they are not informed of available programs.

Awareness of the ENERGY STAR® logo also seems fairly high (82 percent), especially among non-low income households. Reducing the monthly energy bill, in particular, appears to be an important driving factor when making decisions of energy efficient product purchases. Other factors such as increased comfort, protection of the environment, increased home value, and receiving rebates are also highly appealing in making decisions on such purchases. The single biggest barrier for households in investing in energy efficient measures is their concern and uncertainty of payback and initial higher costs.



### 3.3.4 Commercial and Industrial Customer Attitudes This section summarizes commercial and industrial customer attitudes on energy efficiency practices and programs. The results are based upon phone surveys of small commercial and industrial customers in addition to site surveys and discussions with larger commercial and industrial customers. Large customers are defined as properties using over 300,000 kWh’s of energy per year. The surveys were utilized to obtain information on past purchases and practices, awareness of efficiency programs and equipment, and overall attitudes toward energy efficiency.



### 3.3.5 Commercial and Industrial Custom er Respondent Characteristics The analyses began with an examination of characteristics of commercial and industrial respondents, followed by question-by-question anal ysis. Ownership characteristics of respondents and the primary business activities were recorded to determine the distribution of respondents among the four electric utility providers. A summary for both small commercial and industrial customers and large commercial and industrial customers is provided in Table 36

below.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 52 Table 36. Respondent Characteristics SummaryWarehouseRetailGroceryOfficeLodgingHealthEducationIndustrialRestaurantOtherTotal

Small Commercial and Industrial Respondents

NATIONAL

GRID N 0 6 3 10 0 5 2 2 2 5 35

Column

% .0% 26.1% 23.1% 17.9% .0% 35.7% 40.0% 8.7% 20.0% 10.9% 17.5%

NH ELEC

COOP N 1 2 2 10 5 0 0 3 1 11 35

Column

% 25.0% 8.7% 15.4% 17.9% 83.3% .0% .0% 13.0% 10.0% 23.9% 17.5%

PSNH N 3 8 6 26 1 4 3 12 6 26 95

Column

% 75.0% 34.8% 46.2% 46.4% 16.7% 28.6% 60.0% 52.2% 60.0% 56.5% 47.5%

UNITIL N 0 7 2 10 0 5 0 6 1 4 35

Column

% .0% 30.4% 15.4% 17.9% .0% 35.7% .0% 26.1% 10.0% 8.7% 17.5%

Total N 4 23 13 56 6 14 5 23 10 46 200

Column

% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%

Large Commercial and Industrial Respondents

NATIONAL

GRID N 0 0 0 3 1 2 0 10 0 2 18

Column

% .0% .0% .0% 14.3% 7.7% 16.7% .0% 11.1% .0% 9.1% 9.1%

NH ELEC

COOP N 1 2 0 0 3 0 1 2 2 1 12

Column

% 20.0% 28.6% .0% .0% 23.1% .0% 6.3% 2.2% 50.0% 4.5% 6.1%

PSNH N 4 5 7 15 8 9 15 73 2 16 154

Column

% 80.0% 71.4% 100.0% 71.4% 61.5% 75.0% 93.8% 81.1% 50.0% 72.7% 78.2%

UNITIL N 0 0 0 3 1 1 0 5 0 3 13

Column

% .0% .0% .0% 14.3% 7.7% 8.3% .0% 5.6% .0% 13.6% 6.6%

Total N 5 7 7 21 13 12 16 90 4 22 197

Column

% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%



### 3.3.6 Commercial and Industrial Customer Program Awareness and Participation Respondents were polled to determine customer awareness and participation in the existing energy efficiency and incentive programs offered by the utility providers. Program awareness was significantly higher among the large comme rcial and industrial customers (86 percent) compared to small commercial and industrial customers (60 percent). Past participation in efficiency and incentive programs was also notably higher among large customers (85 percent) compared to small customers (30 percent). Di fferences in awareness and participation levels among utility providers were not statistically signi ficant. Results of small and large customer surveys are summarized below in Table 37.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 53 Table 37. Awareness of Existing Energy Efficiency Programs and IncentivesWarehouseRetailGroceryOfficeLodgingHealthEducationIndustrialRestaurantOtherTotal

Small Commercial and Industrial Respondents

YES,

AWARE N 4 13 7 33 4 7 4 14 2 27 115

Column

% 100.0% 56.5% 53.8% 62.3% 66.7% 53.8% 80.0% 63.6% 20.0% 61.4% 59.6%

NO, NOT

AWARE N 0 10 6 20 2 6 1 8 8 17 78

Column

% .0% 43.5% 46.2% 37.7% 33.3% 46.2% 20.0% 36.4% 80.0% 38.6% 40.4%

TOTAL N 4 23 13 53 6 13 5 22 10 44 193

Column

% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%

Large Commercial and Industrial Respondents

YES,

AWARE N 3 2 6 18 11 10 13 77 1 21 162

Column

% 60.0% 40.0% 85.7% 90.0% 84.6% 90.9% 92.9% 87.5% 25.0% 95.5% 85.7%

NO, NOT

AWARE N 2 3 1 2 2 1 1 11 3 1 27

Column

% 40.0% 60.0% 14.3% 10.0% 15.4% 9.1% 7.1% 12.5% 75.0% 4.5% 14.3%

TOTAL N 5 5 7 20 13 11 14 88 4 22 189

Column

% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%



### Respondents who indicated that they were aware of the existing efficiency and incentive programs offered by their utility providers were then asked whether they had participated in the programs. As summarized in Table 38 below, a substantial difference in participation levels was noted between small (30 percent) and large (86 percent) commercial and industrial respondents.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 54 Table 38. Participation in Utilit y’s Energy Efficiency ProgramsWarehouseRetailGroceryOfficeLodgingHealthEducationIndustrialRestaurantOtherTotal

Small Commercial and Industrial Respondents

YES N 2 2 2 6 2 2 3 3 2 8 32

Column

% 50.0% 16.7% 28.6% 20.7% 66.7% 33.3% 75.0% 21.4% 100.0% 30.8% 29.9%

NO N 2 10 5 23 1 4 1 11 0 18 75

Column

% 50.0% 83.3% 71.4% 79.3% 33.3% 66.7% 25.0% 78.6% .0% 69.2% 70.1%

TOTAL N 4 12 7 29 3 6 4 14 2 26 107

Column

% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%

Large Commercial and Industrial Respondents

YES N 3 1 2 14 8 8 13 66 1 12 128

Column

% 100.0% 100.0% 100.0% 82.4% 80.0% 88.9% 100.0% 88.0% 100.0% 66.7% 85.9%

NO N 0 0 0 3 2 1 0 9 0 6 21

Column

% .0% .0% .0% 17.6% 20.0% 11.1% .0% 12.0% .0% 33.3% 14.1%

TOTAL N 3 1 2 17 10 9 13 75 1 18 149

Column

% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%

Note: This question was only asked of respondents who were aware of their utilities’ energy efficiency programs



### Small commercial and industrial respondents who indicated that they had not participated in the energy efficiency programs were asked additional questions regarding their nonparticipation. The most frequently given response for nonparticipat ion among small customers was they “have not purchased energy-using equipment” (49 percent). The next three most frequently cited reasons seem to relate to their lack of awareness of the programs. Of respondents who have participated in their utility’s energy efficiency programs, a significant majority of both small customers (94 percent) and large customers (98 percent) reported that they would participate in the programs again if given the opportunity.



### 3.3.7 Commercial and Industrial Cust omer Motivations and Barriers To first assess customer attitudes towards energy efficiency, respondents were asked to qualify the amount of attention they spend on controlling energy costs through general efficiency practices such as adjusting room temperatures when not occupied and shutting off computers and lights at night. As shown in Table 39, 86 percent of respondents indicated that they pay at least “some attention” to controlling energy costs. No significant differences were observed among any groups or between small and large customers.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 55 Table 39. Attention Paid to Co ntrolling Company Energy Costs – Small/Large Respondents Combined



### Frequency Valid Percent

Substantial attention to these matters 165 43%

Some attention 163 43%

Very little attention 37 10%

No attention 13 3%

Don’t know 4 1%

Total 382 100%

Respondents were then asked to rate the likelihood of purchasing energy efficient equipment instead of standard equipment given several c onditions generally assumed to increase the attractiveness of adopting energy efficient equipment. Respondents were told to assume that the energy efficient cost between 20 and 30 percent more than standard models. Among all respondents, reduction of monthly energy bills and receiving a rebate were the reasons most likely to encourage the purchase of energy effici ent equipment. Increasing occupant comfort, environmental protection and improving business image were less likely to motivate respondents to specify energy efficient equipment in both small and large customers. A complete summary of results across all building types is provided in Table 40 below.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 56 Table 40. Likelihood of Purchasi ng Energy Efficient Equipment

1=NOT AT

ALL

LIKELY 2 3 4 5=

EXTREMELY

LIKELY TOTAL

Small Commercial and Industrial Respondents

a... your monthly energy bill would be

less N 12 2 16 39 129 198

Row % 6% 1% 8% 20% 65% 100%

b... it increased

occupant comfort N 19 5 38 40 97 199

Row % 10% 3% 19% 20% 49% 100%

c... you felt you were helping to protect the

environment N 14 3 35 41 104 197

Row % 7% 2% 18% 21% 53% 100%

d... it improved

business image or

value N 21 4 29 49 94 197

Row % 11% 2% 15% 25% 48% 100%

e... you received a

rebate N 17 2 20 31 128 198

Row % 9% 1% 10% 16% 65% 100%

f... your sales

person recommended it N 23 11 44 41 75 194

Row % 12% 6% 23% 21% 39% 100%

Large Commercial and Industrial Respondents

a... your monthly energy bill would be

less N 4 9 25 49 94 181

Row % 2.2% 5.0% 13.8% 27.1% 51.9% 100.0%

b... it increased

occupant comfort N 8 30 45 47 50 180

Row % 4.4% 16.7% 25.0% 26.1% 27.8% 100.0%

c... you felt you were helping to protect the

environment N 5 21 45 48 63 182

Row % 2.7% 11.5% 24.7% 26.4% 34.6% 100.0%

d... it improved

business image or

value N 8 24 29 48 69 178

Row % 4.5% 13.5% 16.3% 27.0% 38.8% 100.0%

e... you received a

rebate N 2 7 21 49 102 181

Row % 1.1% 3.9% 11.6% 27.1% 56.4% 100.0%

f... your sales

person recommended it N 14 19 50 54 42 179

Row % 7.8% 10.6% 27.9% 30.2% 23.5% 100.0%



### Respondents were asked to identify the primary reasons why they would not purchase energy efficient equipment or make energy efficient im provements to the space. Table 41 provides a coded summary of the open-ended responses. By far the most frequent response was concerns over the cost of the equipment and the payback (69 percent). Other responses included satisfaction with current equipment (6 percent), purchasing decisions made at corporate level (5 percent), tenants unwilling to invest in capital improvements for spaces they do not own (4 percent), and no need to replace equipment that is currently in working order (3 percent). Other reasons cited included the use of specialized equipment and the belief thatFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 57 

### energy efficient equipment would be not availabl e for the specialized process (3 percent), and the quality and reliability of energy efficient equipment (3 percent).

Table 41. Primary Reasons for Not Purchasing Equipment/Making Impr ovements – Small/Large



### Frequency Valid Percent

Cost / benefit, payback 225 69% Current equipment is satisfactory/no need 20 6% Corporate decision 16 5% Renting, not owner of property 13 4% Replacing as needed 8 3% Not compatible with business needs 10 3% Quality 9 3%

Not well informed 4 1%

Other 21 6%

Total 326 100%



### 3.3.8 Commercial and Industrial Customer Program Participation and Barriers Summary Of the small and large commercial and industrial customers surveyed, 86 percent of respondents reported some or high level of attention to controlling energy costs. Overall awareness of energy efficiency programs and inc entives offered by utility providers was significantly higher in the large commercial/industrial respondents (86 percent) compared to the small commercial/industrial respondents (60 percent). Past participation in utility provider offered programs was similarly higher in the large customer group who was aware of the programs offered (86 percent) compared to the small customer group aware of the programs offered (30 percent). Of respondents who have par ticipated in their utility’s energy efficiency programs, a significant majority of both small customers (94 percent) and large customers (98 percent) reported that they would participate in the programs again if given the opportunity.

The single largest barrier to respondents investing in energy efficiency measures was concern about initial premium costs of equipment and insufficient payback (69 percent). Respondents indicated that the two most important factors influencing decisions to invest in energy efficient equipment are expectations of lower monthly energy bills and rebates or incentives for purchasing energy efficient equipment that would help offset some of the initial costs. Other factors such as business image, environmental impact, occupant comfort, and sales person recommendation were less likely to influence decisions to invest in energy efficient equipment.



## 3.4 Forecast Model of State Electricity and Natural Gas Consumption and Peak Demand

Results from this task were presented in Section 2.3 above. As noted previously these forecast models were compiled by RLW for this project based on sales information provided to the GDS Team directly by the project’s four participating electric utilities and two participating natural gas distribution companies. Separate total and cust omer sector-specific energy (MWH), demand (MW) and fuel (MMBTu) forecasts were developed for the state as a whole and by utility service territory. Where applicable, these forecasts were compared against relevant ISO-NE and EIA data to assess reasonableness. Please refer to Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, and Figure 15, presented in Section 2.3 of this report for a summary of these model

forecast results.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### As will be discussed in more detail in the additional energy efficiency potential modeling methodology section below, these customer-sector electric and gas forecast models served as critical inputs used to estimate the percent potential values for additional energy efficiency opportunities statewide. They were also used to develop energy efficiency potential percentages at the utility-specific territory level.



## 3.5 Estimates of 10-Year Technical, Maximum Achievable, Maximum Achievable Cost Effective Potentials and Potentially Obtainable

Scenario

A main objective of this study was to estimate, state-wide and for each of the four New Hampshire retail electricity providers and two natural gas distribution companies, the technical, maximum achievable, maximum achievable cost effective potentials, and savings from a potentially obtainable scenario for electricity, natural gas, and related propane and fuel oil savings over the next 10 year period, and the budgets (where appropriate) required to achieve that potential. As described in more detail below, the activities undertaken to develop theseestimates were based on the GDS Team’s existing sector-level models, DR 96-150 costeffectiveness criteria, and the region’s current avoided energy cost projections, as expanded toreflect the increased list of measures to be assessed and customized based on state utilityspecific data and the saturation and penetration survey results obtained through this project’s survey and site visit activities. All results have been analyzed and compared for reasonableness against overall state consumptio n and consideration of past participation.

This section of the report presents an overview of the approach and methodology that was used to ultimately determine the various savings poten tials additional energy efficiency opportunities in New Hampshire.



### 3.5.1 Energy Efficiency Potential – Key Data Sources Data required for performing the energy efficiency potential analysis elements of this study can be grouped into three major categories:

• Measure-specific data including: energy savings (kWh, kW, MMBTu), measure costs (full/incremental), measure lives (full/effective and persistence), etc.

• New Hampshire customer-specific historical, current and forecasted data including: number and types of customers (residential, low income, single/multi-family, commercial, industrial), customer sales by customer class and end use (space heating, space cooling, water heating, lighting, etc.), customer types (SIC/NAICS), average size (square footage of typical single, multi-family homes and commercial/industrial buildings), typical energy use intensity broken down by end use (lighting, cooling, water heating, process), saturation of electric water heating, central cooling, other energy efficiency measures and appliances (and associated appliance saturation trends), and peak load coincidence factors for major electric end-uses by sector.

• New Hampshire statewide and utility-specific and other system-related data including: forecast of electric and natural gas avoided costs (generation, transmission, distribution), electric line losses, reserve margin planning assumption, general rate of inflation and appropriate discount rate, and information on environmental benefits that may occur per kWh or MMBTu saved from energy efficiency programs. Values and sources for these data are provided in Appendix H.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### 3.5.2 Energy Efficiency Potential Calculation Stages Three key calculations that have been undertaken to complete this assessment are described below. Following the descriptions, these three stages of potential energy savings calculation are shown graphically in a Venn diagram in Figure 16. 34 

### A fourth stage, developed for this project, relates to calculation of the likely obtainable potential (a subset of the maximum achievable cost effective potential), and is described separately at the end of this section. Savings interactions for measures like lighting and lighting controls are taken into account at every potential stage listed below.

The first stage in determining energy efficiency potential requires estimation of the technical potential for energy savings in New Hampshire. Technical potential is defined as the complete penetration of all measures analyzed in applications where they are deemed to be technically feasible from an engineering perspective. The technical potential for electric energy efficiency for this study was developed from estimates of the technical potential of individual energy efficiency measures applicable to each sector and for relevant end-uses within each sector (residential, commercial, industrial, energy efficient space heating, energy efficient water heating, etc.). For each energy efficiency measure, GDS calculated the electricity savings that could be captured if 100 percent of inefficient electric appliances and equipment were replaced instantaneously (where they are deemed to be technically feasible). Separate technical potentials were calculated for natural gas and re lated propane and oil saving measures, also by

sector and end-use.

The second stage relates to calculation of the maximum achievable energy efficiency potential. Maximum Achievable potential is defined as the maximum penetration of an efficient measure that would be adopted absent consideration of cost or customer behavior. The term"achievable" refers to efficiency measure penetration, based on estimates of New Hampshirespecific building stock, energy efficient equipm ent saturations and realistic penetration levels that can be achieved by 2018 if all remaining standard efficiency equipment were to be replaced on burnout (at the end of its useful measure life) and where all new construction and major renovation activities in the state were done using energy efficient equipment and construction/installation practices. Under this scenario, energy efficient measures with measure lives over ten (10) years would have their poten tial savings calculated based on the study life divided by measure life ((Study Life = 10) / Measure Life).

In certain circumstances, where early replacem ent of specific measures is becoming standard practice, maximum achievable potential includes the retrofit of measures before the end of their useful measure life (i.e., T8 lighting, insulation a nd weatherization of existing homes). In such cases, the entire stock of measures to be retrofitted were modeled so that all were replaced over the ten year study period.

Calculation of the Maximum Achievable Cost Effective (M.A.C.E) potential is the third stage. Maximum Achievable Cost Effective potential is defined as the potential for the realistic penetration of energy efficient measures that are cost effective according to the Total Resource Cost (TRC) Test, and would be adopted given aggressive funding levels, and was determined

absent consideration of customer behavior. A concerted, sustained campaign involving highly aggressive programs and market interventions would be required to achieve this level of savings.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### To develop the maximum achievable cost effective potential, GDS retains only those electric and non-electric energy efficiency measures in the analysis that were found to be cost effective (according to the TRC) based on individual measure cost effective analyses conducted in this study. Energy efficiency measures that are not cost effective were excluded from the estimate of maximum achievable cost effective energy efficiency potential.

Potentially Obtainable scenario is a new output developed for this study and can be defined as an estimate of the potential for the realistic penetration over time of energy efficient measures that are cost effective according to the NH TRC, and would be adopted after consideration of customer behavior and given aggressive funding levels, and by determining the level of market penetration that can be achieved with a concerted, sustained campaign involving highly aggressive programs and market interventions. As demonstrated later in this report, the State of New Hampshire and its electric and natural gas utilities would need to continue to undertake, and perhaps aggressively expand its efforts to achieve these levels of savings.

Based on information collected through this project’s telephone surveys and site visits, aPotentially Obtainable scenario was developed for each customer sector by electric and nonelectric fuel types.

Figure 16 below shows the four stages of electric energy savings potential (this Venn diagram figure is for illustrative purposes only and does not reflect actual data for New Hampshire).

Figure 16. Venn Diagram of the St ages of Energy Savings Potential



### 3.5.3 General Methodological Approach The GDS Team’s analytical approach began with a careful assessment of the existing saturation of energy using equipment and penetration of energy efficiency measures that has already been achieved in New Hampshire. As discussed earlier in this section, this was accomplished through a combination of primary data collection and identification, review and documentation of secondary data sources. For each energy efficiency measure, this analysis assessed how much energy efficiency has already been accomplished as well as the remaining potential for energy efficiency savings. For example, if 100 percent of the homes in New Hampshire had electric lighting, and 30 percent of light sockets were already using high efficiency compact fluorescent bulbs (CFLs), then the remaining potential for energy efficiency savings is the 70 percent of light sockets in the residential sector that are not already using high efficiency fluorescent bulbs. Technical

Potential Maximum

Achievable

Potential Maximum Achievable Cost

Effective Potential Potentially ObtainableFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### The general methodology used for estimating the potential for energy efficiency in the residential, commercial and industrial sectors in New Hampshire included the following steps:

1. Identification of energy efficiency measures to be included in the assessment.2. Identification of data sources for determining costs and savings for all electric and nonelectric energy efficiency measures. 3. Determination of the characteristics of each energy efficiency measure including its incremental or total cost, electric energy consumption and savings, demand and MMBTu savings, current saturation, the percent of installations that are already energy efficient, and the useful life of the measure (with care taken to document the sources for each characteristic and to recognize potential difference in values by sector, building type and/or time of installation – i.e., new construction, existing buildings, replace on burnout, retrofit). In addition, the determination of any technical limitations or barriers that may be present when attempting to install an energy efficient measure is also considered. 4. Calculation of cost-effectiveness screening metrics (e.g., the Total Resource Cost Test benefit cost ratio) and sorting of measures from least-cost to highest cost per kWh (or MMBTu) saved. Interactions between measures were not considered for determining measure specific benefit cost ratios. 5. Collection and analysis (where data was available) of the baseline and forecasted

characteristics of the electric and non-el ectric end use markets, including equipment saturation levels and consumption, by market segment and end use over the forecast period. 6. Integration of measure characteristics and baseline data to produce estimates of cumulative costs and savings across all measures.

7. Determination of the cumulative techni cal and maximum achievable potentials using supply curves, by sector (separately for electric and non-electric measures). 8. Determination of the achievable cost effective potential for electric and non-electric energy savings over the forecast period. 9. Estimation of the likely obtainable potential for electric and non-electric energy savings over the forecast period.

A key element in this approach is the use of energy efficiency supply curves. The advantage of using an energy efficiency supply curve is that it provides a clear, easy-to-understand framework for summarizing a variety of complex information about energy efficiencytechnologies, their costs, and the potential for energy savings. Properly constructed, an energyefficiency supply curve avoids the double counting of energy savings across measures by accounting for interactions between measures. The supply curve also provides a simplified framework to compare the costs of energy effici ency measures with the costs of energy supply

resources.

The supply curve is typically built up across individual measures that are applied to specific base-case practices or technologies by market segment. Measures are sorted on a least-cost basis and total savings are calculated incrementa lly with respect to measures that precede them. Supply curves typically, but not always, end up reflecting diminishing returns, i.e., costs increase rapidly and savings decrease significantly at the end of the curve. There are a number of other advantages and limitations of energy-efficiency supply curves (see, for example, Rufo 2003). 35

35 Rufo, Michael, 2003. Attachment V – Developing Greenhouse Mitigation Supply Curves for In-State Sources

, Climate Change Research Develop ment and Demonstration Plan, prepared for the California Energy Commission, Public Interest Energy Research Program, P500-03-025FAV, April. http://www.energy.ca.gov/pier/reports/500-03-

025fs.htmlFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### 3.5.4 Energy Efficiency Potential Calculations - Core Equations This section describes the calculations used to estimate the energy efficiency potential in the residential, commercial, and industrial sectors. There is a core equation, shown below, used to estimate the technical potential for each individual efficiency measure and it is essentially the same for each sector. However, for the residential sector, the equation is applied using a “bottom-up” approach where the equation inputs are displayed in terms of the number of homes or the number of high efficiency units (e.g., compact fluorescent light bulbs, high efficiency air conditioning systems, programmable thermostats, etc.). For the commercial and industrial (C&I) sectors, a “top-down” approach was used for developing the technical potential estimates. In this case, the data is displayed in terms of energy rather than number of units or square feet of

floor area. 36 

### For the commercial and industrial sectors, GDS used New Hampshire-specific equipment saturation and end use data wherever such data was available. The core equations used by GDS are very similar to the equations used in prior energy efficiency potential studies.



### 3.5.4.1 Core Equations for Estimating Technical Potential

The core equation used to calculate the energy efficiency technical potential for each individual efficiency measure for the residential sector is shown below. Section 4 provides more details on how this core equation was applied within the residential sector’s bottom-up modeling approach.

Technical

Potential

of Efficient

Measure = Total

Number of

Residential

Households X Base Case Equipment

End Use Intensity (annual kWh

use per home) X Base Case

Factor X Remaining

Factor X Convertible

Factor X Savings

Factor



### where:



### • Number of Households is the number of residential customers in the market segment.



### • Base-case equipment end use intensity is the energy used per customer per year by each base-case technology in each market segment. This is the consumption of the energy using equipment that the efficient technology replaces or affects. For example purposes only, if the efficient measure were a high efficiency light bulb (CFL), the base end use intensity would be the annual kWh use per bulb per socket associated with an incandescent light bulb that provides equivalent lumens to the CFL.



### • Base Case factor is the fraction of the end use energy that is applicable for the efficient technology in a given market segment. For example, for residential lighting, this would be the fraction of all residential electric customers that have electric lighting in their

household.



### • Remaining factor is the fraction of applicable dwelling units or lighting sockets that have not yet been converted to the energy efficiency measure; that is, one minus the fraction of households that already have the energy-efficiency measure installed.

36 It is important to note that square-foot based saturation assumptions cannot be applied to energy use values without taking into account differences in energy intensity (e.g., an area covered by a unit heater may represent two percent of floor space but a larger percent of space heati ng energy in the building because it is likely to be less efficient than the main heating plant).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### • Convertible factor is the fraction of the applicable dwelling units that is technically feasible for conversion to the efficient technology from an engineering perspective (e.g., it may not be possible to install CFLs in all light sockets in a home because the CFLs may not fit in every socket in a home).



### • Savings factor is the percentage reduction in energy consumption resulting from application of the efficient technology.

The core equation used to calculate the electric energy efficiency technical potential for each individual efficiency measure for the commercial and industrial sectors is shown below. More information is presented in Sections 5 and 6 regarding how this core equation was applied within the commercial and industrial sectors using the top-down modeling approach.

Technical

Potential of

Efficient

Measure = Total End

Use kWh Sales by Building or

Industry

Type X Base Case

Factor X Remaining

Factor X Convertible

Factor X Savings

Factor



### where:



### • Total end use kWh or MMBTu sales (by segment) is the forecasted level of electric or natural gas sales for a given end-use (e.g., space heating) in a commercial or industrial market segment (e.g., office buildings).



### • Base Case factor is the fraction of the end use energy that is applicable for the efficient technology in a given market segment. For exam ple, for fluorescent lighting, this would be the fraction of all lighting kWh in a given market segment that is associated with

fluorescent fixtures.

• Remaining factor is the fraction of applicable kWh sales that are associated with equipment that has not yet been converted to the energy efficiency measure; that is, one minus the fraction of the market segment that already have the energy-efficiency

measure installed.



### • Convertible factor is the fraction of the equipment or prac tice that is technically feasible for conversion to the efficient technology from an engineering perspective (e.g., it may not be possible to install VFDs on all motors in a given market segment).



### • Savings factor is the percentage reduction in energy consumption resulting from application of the efficient technology over the base technology.

Technical electric and non-electric energy efficiency savings potential was calculated in two steps. In the first step, all measures are treated independently ; that is, the savings of each measure are not reduced or otherwise adjusted for overlap between competing or synergistic measures. By treating measures independently, their relative economics are analyzed without making assumptions about the order or combinations in which they might be implemented in customer buildings. However, the total technical potential across measures cannot be estimated by summing the individual measure potentials directly because some savings would be double-counted. For example, the savings from a weatherization measure, such as low-e

ENERGY STAR ® 

### windows, are partially dependent on other measures that affect the efficiency of the system being used to cool or heat the building, such as high-efficiency space heatingFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### equipment or high efficiency air conditioning systems; the more efficient the space heating equipment or electric air conditioner, the less energy can be saved from the installation of low-e

ENERGY STAR windows.

For the residential and commercial sectors, GDS addressed the new construction market as a separate market segment, with measures targeted specifically at the new construction market.

In the residential new construction market segment, for example, detailed energy savings estimates for the ENERGY STAR Homes program were used as a basis for determining energy savings for this market segment in New Hampshire. For the commercial sector, in addition to end-use specific measures applicable to new cons truction projects, integrated design measures (e.g., for building shell, lighting design, etc.) were assessed. Within the new construction market segment for the commercial sector, an assumption was built into the model that 1⁄2 the commercial new construction sales were attributed to new construction projects, while the other half was directly attributable to growth of the existing commercial market segment. In the case of the industrial sector, the model functions very similarly but uses an all-inclusive factor which incorporates the four (4) factors discussed above into one multiplier to achieve the same approximate end result as the individual factor approach.



### 3.5.5 Rates of Implementation fo r Energy Efficiency Measures For new construction, energy efficiency meas ures can be implemented when each new home or building is constructed, thus the rate of availability is a direct function of the rate of new construction. For existing buildings, determining the annual rate of availability of savings is more complex. Energy efficiency potential in the existing stock of buildings can be captured over time through two principal processes:

1. as equipment replacements are made normally in the market when a piece of equipmentis at the end of its useful life (we refer to this as the “market-driven” or “replace-onburnout” case); and,

2. at any time in the life of the equipment or building (which we refer to as the “retrofit” case).

Market-driven measures are generally characterized by incremental measure costs and savings (e.g., the incremental costs and savings of a high-efficiency versus a standard efficiency air conditioner); whereas retrofit measures are gener ally characterized by full costs and savings (e.g., the full costs and savings associated with retrofitting ceiling insulation into an existing attic). A specialized retrofit case is often referred to as “early replacement” or “early retirement”. This refers to a piece of equipment whose replac ement is accelerated by several years, as compared to the market-driven assumption, for the purpose of capturing energy savings earlier than they would otherwise occur.

For the market driven measures, existing equipm ent is assumed to be replaced with high efficiency equipment at the time a consumer is shopping for a new appliance or other energy using equipment, or if the consumer is in the process of building or remodeling. Using this assumption, equipment that needs to be replaced (replaced on burnout) in a given year is eligible to be upgraded to high efficiency equipment. For the retrofit measures, savings can theoretically be captured at any time; however, in practice it takes many years to retrofit an entire stock of buildings, even with the most aggressive of efficiency programs.

As noted above, a special retrofit case is “early retirement” of energy equipment that is still functioning well, and replacing such equipment with high efficiency equipment. For this project, early retirements were considered only for a small number of measures (e.g.,Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### insulation/weatherization). For these early retirement energy efficiency measures, GDS assumed the same measure life for the measure that was replaced early as a time of replacement measure. In addition, savings were based on the whole measure life for retrofit / early replacement type measures.



### 3.5.6 Benefit/Cost (Cost-Effectiveness) Modeling To determine maximum achievable cost effective potential GDS has used its existing energy efficiency measure and program screening tool. The GDS screening tool is user friendly, well documented, and provides the following benefit/cost ratio calculations: Total Resource Cost Test, Utility Cost Test, Participant Test, Rate Impact Measure Test, and Societal Test. For this Report, only the Total Resource Cost Test was used for screening purposes (consistent with New Hampshire utility and Commission procedures). The annual discount rate assumed for this test to determine net present values (NPV) is 5.0%.

The model is comprehensive and uses the following ty pes of data as input: costs, useful lives and energy savings of energy efficiency, l oad management or demand response measures, load shape impacts of electric or natural gas energy efficiency measures, avoided costs of electricity for generation, transmission and distribution, avoided costs of natural gas and other fuels (propane, fuel oil, etc.), avoided water costs, projected or actual measure or program penetration assuming no program, projected or actual measure or program penetration with a program, participant costs, energy efficiency organization or utility costs (including rebates or financial incentives), non-energy benefits of measur es or programs, electric line losses, discount rate, and inflation rate.

As noted above, the model provides calculations of five benefit/cost ratios as well as year-byyear and cumulative energy savings, dollar costs and dollar benefits. The GDS screening tool provides the flexibility to vary assumptions in the analysis to reflect uncertainty, changing market circumstance, statutory change or other factors that influence assessment of reasonably available potential through the efficiency utility. The GDS measure and program screening tool allows for the incorporation of changes to re flect real world circumstances and a dynamic environment. The GDS tool exists in a single Microsoft Excel file, and includes several linked worksheets that present clearly documented inputs and outputs. More information on the model and key input assumptions being used for this report is included in Appendix H.



## 3.6 Assessment of Past and Current Program Capture and

Recommendations

For this task, the GDS Team evaluated the penetration of energy efficiency savings (electric and natural gas) resulting from past and current utility-sponsored program activities. A review of the utilities’ annual Core New Hampshire Program Highlights reports formed the basis for this evaluation and results are presented from both a cumulative savings as a percent of sales and number of customers served as a percent of population basis. Recommendations for potential modifications to program and measure offerings t hat could increase the likelihood of achieving identified potentials are made and have been developed mainly through information on barriers collected directly from New Hampshire uti lity customers (through this project’s telephone surveys and site visits) and supplemented by t he GDS Team’s experience with looking at programs from a logic-modeling perspective, and ex tensive knowledge of other local, regional and national programs and best practices. 37 

### Results from these analysis and assessments are presented in Section 8 of this report.

37 Assessments based on a logic-modeling perspective recognize current program resources (dollars, staffing, etc.) and activities (measure installations, promotional rebates/in centives, marketing/outreach, education/training, etc.)Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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# Section 4: Residential Sector Energy Efficiency Potential

This section of the report presents the estimate s of electric and non-electric technical (best), technical (traditional), maximum achievable, ma ximum achievable cost effective, and potentially obtainable energy efficiency potential for the ex isting and new construction market segments of the residential sector in New Hampshire. More information regarding how these potentials were derived is also presented.

According to this analysis, there is still a larg e remaining potential for electric and non-electric energy efficiency savings in the residential sector. Table 42 and Table 43 below summarize the savings by potential type by the year 2018 for residential electric and non-electric measures respectively. The estimated total costs to ac hieve each level of savings by 2018 are also presented in these tables. In addition, Table 42 presents peak demand savings for each potential level of savings associated with the electric energy efficiency measures.

Table 42. Summary of Residential Electric Energy Efficiency Savings Potential

Estimated Cumulative Annual Savings by 2018 (MWh) Savings in 2018 as a Percent of

Total 2018 Residential Sector Electric Energy Consumption Estimated

Summer MW* Estimated Total Cost

to Achieve (Cummulative) Estimated Total Cost to

Achieve (Annual) Technical Potential (Best Only) 1,770,861 31.7% 66.7 $ 2,554,517,348 255,451,735 $
Technical Potential (Good, Better, Best) 1,489,861 26.7% 56.1 $ 2,149,167,880 214,916,788 $
Max Achievable Potential 1,217,145 21.8% 45.9 $ 1,214,926,125 121,492,613 $
Max Achievable Cost Effective Potential 1,170,398 20.9% 44.1 $ 632,287,942 63,228,794 $ Potentially Obtainable 698,069 12.5% 26.3 $ 383,050,068 38,305,007 $

33% * Estimated Summer Load Factor

Table 43. Summary of Residential Non-Electric Energy Efficiency Savings Potential

Estimated Cumulative Annual Savings by 2018 (MMBTU) Savings in 2018 as a Percent of

Total 2018 Residential Sector Other Fuels Energy Consumption Estimated Total Cost to

Achieve (Cummulative) Estimated Total Cost to

Achieve (Annual) Technical Potential (Best Only) 16,918,392 50.4% $ 3,220,297,934 322,029,793 $
Technical Potential (Good/Better/Best) 12,099,639 35.7% $ 2,277,404,262 227,740,426 $
Max Achievable Potential 7,463,743 22.0% $ 1,206,916,417 120,691,642 $
Max Achievable Cost Effective Potential 6,313,954 18.6% $ 456,169,489 45,616,949 $ Potentially Obtainable 3,633,554 10.7% $ 200,483,725 20,048,372 $



### On the electric side, the maximum achievable cost effective potential in the residential sector is over 1.1 million MWh, approximately 21 percent of the New Hampshire residential sector sales forecast in 2018. With regard to non-electric end uses, the maximum achievable cost effective potential in the residential sector is more than 6.3 million MMBTu, just under 19 percent of New Hampshire’s residential sector fossil fuel (natural gas, oil and propane) sales forecast in 2018. The lists of measures that make up the savings for each of these levels are shown in Table 44

and Table 45 in Section 4.2.1 below.

and seek to identify their causal links to anticipated outputs (measures installed, in-program energy and capacity savings, # of customers served, market actors trained, etc.), short-, intermediate- and long-term outcomes (changes
in awareness and behavior, market-wide/sustainable ener gy, economic and environmental benefits, etc.). In addition, logic models recognize the existence and potential impacts of external influences (price of energy, state of the local and regional economy, federal tax incentiv es, other non-program sponsored activities, etc.).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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## 4.1 Residential Sector Savings Methodology Overview

The residential sector analysis was modeled using what is considered a “bottom-up approach”. This methodology, shown visually in Figure 17 below:

Figure 17. Residential Sector Savings Methodology – Bottom Up Approach



### As shown in this figure, the methodology started at the bottom based on the number of residential customers (splitting them into single -family and multi-family customers as well as existing vs. new construction). From that point, each home was then broken into a series of end-uses depending on whether the home fits the si ngle-family or multi-family profile. An example of an end-use might be “Single-Family Wate r Heating”. From that point, a series of measures are identified that belong to that end-use. To keep with our example, we would then create a series of measures such as “Energy Star Clothes Washer”, “Energy Star Dishwasher”, “Pipe-Wrap”, etc – all these measures fit into that end use category of Single-Family Water Heating.

The next step in our bottom up approach was to determine how many of the homes in the profile we are looking at (single-family or multi-fam ily) have each of those measures within each of those end uses. This is one of the multiple applicability factors that were used to screen each measure to determine savings. The applicability factors include the base case factor, the remaining factor, the convertible factor, and the savings factor. The full formula to determine savings at the measure level is shown below.

The goal of the formula is to determine how many households this measure applies to (base case factor), then of that group, how many already have the efficient version of the measure we are installing (remaining factor). From there, we looked to make sure there were not any technical reasons why the measure cannot be installed, and if so, made a correction (convertible factor) for that reason. The last factor which needed to be applied was the savings factor, which is the percentage savings achieved from installing the efficient measure over aFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### standard measure. In cases where multiple measur es could interact within the same end use, a “more than one choice” factor was also included in the model to avoid double counting of potential savings. In addition, the model ranks measures by levelized cost in order to make assumptions about which measures will be installed in what order. This ranking also takes into account measure interactions where applicable so that savings are not over-stated due to double-counting. For example, if you install insulation and air seal, and then install a programmable thermostat, the savings potential for the thermostat is reduced to account for the reality that insulation has already been improved thus reducing the potential for higher levels of savings. This type of scenario is done throughout the residential model among a variety of

scenarios within the models.

Another example to help illustrate the functionality of the model is single family homes with gas fired boilers. This measure would have space heat ing and space cooling measures installed in the following levelized cost order: programmable thermostats, energy efficient windows, and high efficiency boiler. The base use for space heating and space cooling would be adjusted based on savings from each measure. The full base use would have programmable thermostat savings applied. This new adjusted base use would then be used for the energy efficient window savings and finally the further adjusted base use would then be used for the high efficiency boiler savings.

One other example is single family homes with electric water heaters. In this case, the measure includes more than one choice for dishwasher upgrades and efficient electric water heaters upgrades. The electric water heating measures are in the following levelized cost order: low flow shower showerhead/faucets, Energy Star Dishwasher, efficient water heater, beyond Energy Star dishwasher, pipe wrap, high effici ency water heater, water heater blanket, Energy Star clothes washer, heat pump water heater, whole-house tankless water heater, and solar water heating. In this case the adjusted domestic hot water base use for calculated savings is more complicated. Where a second measure for the same use would be installed the base usage would not be reduced by the earlier measure. The most direct path for base usage reduction is the following: initial base usage is used for the low flow showerhead/faucets; then the Energy Star dishwasher reduces the domestic hot water base use by the percentage of this measure’s electric savings that is associated with water heating; then the low flow and dishwasher reductions are used for the base usage for efficient water heater savings, then pipe wrap, then water heater blanket, then Energy Star Clothes Washer and finally solar water heating. In the case of high efficiency water heater- the base usage is decreased by low flow showerhead/faucets, Energy Star dishwasher water heating savings and pipe wrap before the high efficiency water heater savings are applied.

This type of process was run on every measure within all measure end-use categories and for all customer groups (single-family, multi-fam ily, new construction, existing-construction – and blends thereof). This process, while described here at a very high level, was run within the confines of a complicated model under various scenarios to determine the varying savings potential levels.

In addition to the modeling technique described above, custom measures were included for the residential sector to achieve “Good, Better, Best” scenarios for weatherization (split further by each fuel type) and integrated building design (for each fuel type as well). All of these scenarios were reality-based through use of building simulation software to achieve targeted savings and cost levels for each distinct scenario level. This process required a mix of measures from lower cost and complexity to higher cost and complexity. The weatherization packages were designed to allow a degree of residential customers to follow a “good, better, or best” approach for insulating their existing home. For each of the weatherization approaches, a set of costs andFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 69 

### savings assumptions were developed, as well as assumptions regarding current market penetration.

For the new home stock, a good, better, best approach was also created along with assumptions regarding the percentage of new home customers who would be likely to follow each approach. The assumption made was that 80% of new homes would do one of the three (3) packages, while the remaining 20% would not participate in efficiency programs or install efficiency measures. More information regardi ng the specific measures and associated costs included within each good, better, best scenario is presented in Appendix I.

The costs to achieve savings potential estimates within the residential sector are calculated on a measure by measure basis using the levelized cost ($/kWh in the electric model and $/MMBTu within the non-electric model) for each measure. These figures (levelized costs) represent the cost to save a unit of energy. These levelized costs are then taken and multiplied (again at the measure level) by the 2018 annual savings associated with the potential level being addressed (technical potential, maximum achievable, etc.). A net present value (NPV) formula is then used in conjunction with each measure’s measure life along with an overall discount rate to determine the $ cost per /first year kWh (or MMBTu) saved for each measure. The cost per first year savings figure is then multiplied by the savings potential estimate being evaluated in order to yield the cost to achieve the savings potential in the year 2018 at the measure level. Each measure is then summed up at each potential level to yield the total cost to achieve savings in the residential sector (within the potential level being analyzed) to represent the cost to achieve the potential savings level by the year 2018. This number can then be divided by the study length (10 years) in order to yield an estimate of annual spending needed to reach the potential level target in question.



## 4.2 Residential Sector – Energy Efficiency Potential Results

Eighty-seven (87) residential electric, and one-hundred-ten (110) residential non-electric energy efficiency measures or programs were included in the analysis for the residential sector. In order to develop the list of energy efficiency measures to be examined, GDS worked closely with project sponsors and reviewed recent measure life, savings and cost assumptions studies including a Measure Life Report prepared by GDS for the New England State Program Working Group in June 2007 and a GasNetworks measures assumptions update project completed by GDS during the summer 2008. In addition, GDS reviewed other related electric and non-electric residential energy efficiency measure-specific data sources and technical potential studies that have been conducted recently in the US. Focus was for comprehensiveness on the electric and natural gas measures, less so for fuel oil and propane. Even within electric and natural gas some measures were not analyzed due to a combi nation of measure-specific-limitations, and unavailability of reliable data (e.g., A/C peak demand savings from off peak cooling with thermal energy storage, more advanced windows than double pane with low-E, super high efficient gas hot water heaters/boilers and combo systems, air drying of laundry, etc.).

The set of energy efficiency measures considered was pre-screened to include mainly those measures that are currently commercially ava ilable and cost effective (i.e., achieving a TRC benefit/cost ratios equal to or greater than 1.0 – although measures with TRC ratios between 0.9 and 1.0 were also included). Thus, emerging technologies not currently in the marketplace that had benefit cost ratios below 0.9 were not included in the analysis. The portfolio of measures includes retrofit and replace on burnout programmatic approaches to achieve energy efficiency savings.



### 4.2.1 Characteristics of Energy Efficiency MeasuresFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 70 

### GDS collected data on the energy savings, incremental costs, useful lives and other key “per

unit” characteristics of each of the resident ial electric and non-electric energy efficiency measures. Estimates of the size of the eligible market were also developed for each efficiency measure. For example, electric water heater ef ficiency measures are only applicable to those homes in New Hampshire that have electric water heaters. More information regarding measure-specific savings, cost and measure life assumptions can be found in Appendix E.

For the residential new construction market segment, GDS calculated a forecast of the number of new homes estimated to be built each year based on NH new housing permits as reported by

the US census bureau 38 

### The sizes of various end-use market segments were informed based on project primary data collection efforts. This analysis is based on the most recent residential electric sales forecast for New Hampshire for the years 2009 to 2018. 39 

### Energy-efficiency measures were analyzed for the most important electric and non-electric consuming end uses in

the residential sector.

Tables 40 

### 44 and 45 below list the residential sector electric and non-electric energy efficiency measures included in the technical (best), technical (traditional), maximum achievable, maximum achievable cost effective, and potentially obtainable potential analyses.

38 The source of this economic/demograp hic forecast for NH is the US Census Bureau’s reporting of new building permits. http://www.census.gov/co nst/www/permitsindex.html

39 This residential sector load forecast was provided to GDS by project sponsors.Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.71Table 44. Residential ElectricEnergy Efficiency Savings Potential by MeasureFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.72Table 44. Residential ElectricEnergy Efficiency Savings Potential by Measure - ContinuedFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.73Table 45. Residential Non-ElectricEnergy Efficiency Savings Potential by MeasureFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.74Table 45. Residential Non-ElectricEnergy Efficiency Savings Potential by Measure - ContinuedFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 75 

### 4.2.2 Residential Energy Efficiency Potential Comparisons and Savings By Measure Type

Figure 18 and Figure 19 display a graphical comparison of the varying degrees of potential

results for both the electric and non-electric sector.

Figure 18. Residential Electric Savings Potential Results Comparison

Figure 19. Residential Non-Electric Savings Potential Results Comparison



### Figure 20 displays a graphical comparison of the varying electrical end-uses within the residential sector. As shown, lighting single-family and lighting multi-family make up the greatest savings potential focus areas (52% combined), followed by electric appliances at 16 percent (SF and MF combined), space heating and cooling (10% combined SF and MF), standby (phantom-load) power and water heating at nine percent each (SM/MF combined). 1,770,860,535

1,489,861,317

1,217,144,947
1,170,397,964

698,069,156

0 200,000,000 400,000,000 600,000,000 800,000,000 1,000,000,000 1,200,000,000 1,400,000,000 1,600,000,000 1,800,000,000 2,000,000,000

Technical Potential (Best Only) Technical Potential (Good,

Better, Best) Max Achievable Potential Max Achievable Cost Effective

Potential Potentially ObtainablekWh

16,918,392

12,099,639

7,463,743
6,313,954

3,633,554

0 5,000,000 10,000,000 15,000,000 20,000,000

Technical Potential (Best Only) Technical Potential (Good/Better/Best) Max Achievable Potential Max Achievable Cost Effective

Potential Potentially ObtainableMMBtuFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 76 Figure 20. Residential Max. Achi evable Cost Effective Electric Savings Potential by End Use



### Figure 21 displays a graphical comparison of the varying non-electric end-uses within the residential sector. As shown, single-family ho me oil heating measures represent the largest area of savings potential at 25%, followed by single-family water heating at 18%, and thensingle-family weatherization packages at 12%. The remainder is comprised mostly of multifamily water heating, gas-heating measures for single and multi-family, and home propane heating measures. Lighting
‐ SF

34%

Lighting
‐ MF

18% Electric Appliances
‐ SF

13% Standby Power

9% Space Heating and Space Cooling
‐ SF

7% Water
Heating ‐ SF

5% Water Heating ‐ MF

4% SF New Construction

4% Space Heating and Space Cooling
‐ MF

3% Electric Appliances
‐ MF

3% Pools

0%Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 77 Figure 21. Residential Max Achievab le Cost Effective Non- Electric Savings Potential by End Use



### Figure 22 and Figure 23, displayed below, show a graphical comparison of the varying

maximum achievable cost effective electric an d non-electric savings by end use within the residential sector. While Figure 20 and Figure 21 show relative percent comparisons only, Figure 22 and Figure 23 show both relative and absolute (kWh and MMBTu) comparisons of the savings coming from each end use. Home Gas Heat (MF)

9%

Home Gas Heat (SF)

6%

Home Oil Heat (SF)

25%

Home Oil Heat (MF)

3%

Home Propane Heat (MF)

1% Home
Propane

Heat (SF)

5%

New Construction (MF)

2% New Construction (SF)

4% Water Heating (MF)

11% Water Heating (SF)

18% Weatherization Packages (MF)

4% Weatherization Packages (SF)

12%Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.78Figure 22. Residential ElectricSavings Potential by End Use (with kWh values)Lighting‐SF Lighting‐MFElectricAppliances‐SFStandbyPowerSpaceHeatingandSpaceCooling‐SFWaterHeating‐SFWaterHeating‐MFSFNewConstructionSpaceHeatingandSpaceCooling‐MFElectricAppliances‐MFMFNewConstructionPoolsMax.AchievableCostEffective399,588,082210,479,584151,300,008107,603,65684,066,18953,160,33645,937,31242,689,66636,320,50834,301,0153,293,7051,106,421%ofMACE34.2% 18.0% 12.9% 9.2% 7.2% 4.5% 3.9% 3.6% 3.1% 2.9% 0.3% 0.1%‐50,000,000100,000,000150,000,000200,000,000250,000,000300,000,000350,000,000400,000,000450,000,000

kWh SavingsFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.79Figure 23. Residential Non-ElectricSavings Potential by End Use (with MMBTu values)HomeOilHeat(SF)WaterHeating(SF)WeatherizationPackages(SF)WaterHeating(MF)HomeGasHeat(MF)HomeGasHeat(SF)HomePropaneHeat(SF)NewConstruction(SF)WeatherizationPackages(MF)HomeOilHeat(MF)NewConstruction(MF)HomePropaneHeat(MF)MACE1,714,1211,197,354852,973750,121582,691388,745357,869299,594256,518189,906112,332103,348%ofMACE25.19% 17.59% 12.53% 11.02%8.56% 5.71% 5.26% 4.40%3.77% 2.79% 1.65% 1.52%‐200,000400,000600,000800,0001,000,0001,200,0001,400,0001,600,0001,800,000

MMBtu SavingsFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 80 

### 4.2.3 Residential Energy Effi ciency Measure Supply Curves

This report also presents results in the form of electric and non-electric energy efficiency supply curves. As noted previously, the advantage of usi ng an energy efficiency supply curve is that it provides a clear, easy-to-understand framework for summarizing a variety of complex information about energy efficiency technologies, their costs, and the potential for energy savings. Properly constructed, an energy-effici ency supply curve avoids the double counting of energy savings across measures by accounting for interactions between measures. The supply curve also provides a simplified framework to compare the costs of energy efficiency measures with the costs of energy supply resources.

The supply curves for residential electric energy efficiency savings are shown in Figure 24 through Figure 29. Supply curves for residential non-electric energy efficiency savings are shown in Figure 30 through Figure 35. These supply curves were built up across individual measures and were sorted on a lowest to highes t cost basis per unit of energy saved. As shown in these figures, nearly 12 percent of the projected 2018 residential sector kWh sales could be offset by installing electric efficiency measures at a levelized cost of less than two cents per/kWh (see Figure 29). Nearly eight percent of the projected maximum achievable cost effective savings potential from non-electric efficiency measures could be obtained at a levelized cost of less than three dollars per/MMBTu (see Figure 35).

Figure 24. Residential Electric Energy Efficiency Supply (< $1.10/kWh) Curve for NH – Technical Potential

$0.00 $0.20 $0.40 $0.60 $0.80 $1.00

0% 5% 10% 15% 20% 25% 30% 35% 40%Levelized$/kWh‐

Savings Technical Potential as a % of 2018 Forecasted Electric Use

Note: Only includes measures with a levelized $/kWh < $1.10Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 81 Figure 25. Residential Electric Energy Efficiency Supply (< $0.10/kWh) Curve for NH – Technical Potential

Figure 26. Residential Electric Energy Efficiency Supply (< $1.10/kWh) Curve for NH – Max Achievable $0.00 $0.01 $0.02 $0.03 $0.04 $0.05 $0.06 $0.07 $0.08 $0.09 $0.10

0% 2% 4% 6% 8% 10% 12% 14% 16% 18% 20%Levelized$/kWh

Savings Technical Potential as a % of 2018 Forecasted Electric Use

Note: Only includes measures with a levelized $/kWh < $0.10.

$0.00 $0.20 $0.40 $0.60 $0.80 $1.00

0% 5% 10% 15% 20% 25% 30% 35% 40%Levelized$/kWh‐

Savings Max Achievable Potential as a % of 2018 Forecasted Electric Use

Note: Only includes measures with a levelized $/kWh < $1.10Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 82 Figure 27. Residential Electric Energy Efficiency Supply (< $0.10/kWh) Curve for NH – Max Achievable

Figure 28. Residential Electric Energy Efficiency Supply (< $1.1 0/kWh) Curve for NH – M.A.C.E $0.00 $0.01 $0.02 $0.03 $0.04 $0.05 $0.06 $0.07 $0.08 $0.09 $0.10

0% 2% 4% 6% 8% 10% 12% 14% 16% 18%Levelized$/kWh

Savings Max Achievable Potential as a % of 2018 Forecasted Electric Use

Note: Only includes measures with a levelized $/kWh < $0.10.

$0.00 $0.20 $0.40 $0.60 $0.80 $1.00

0% 5% 10% 15% 20% 25% 30% 35% 40%Levelized$/kWh‐

Savings Max Achievable Cost Effective as a % of 2018 Forecasted Electric Use

Note: Only includes measures with a levelized $/kWh < $1.10Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 83 Figure 29. Residential Electric Energy Efficiency Supply (< $0.1 0/kWh) Curve for NH – M.A.C.E.

Figure 30. Residential Non-Electric Energy Efficiency Supply (< $10/MM BTu) Curve for NH – Technical $0.00 $0.01 $0.02 $0.03 $0.04 $0.05 $0.06 $0.07 $0.08 $0.09 $0.10

0% 2% 4% 6% 8% 10% 12% 14% 16% 18%Levelized$/kWh

Savings Max Achievable Cost Effective as a % of 2018 Forecasted Electric Use

Note: Only includes measures with a levelized $/kWh < $0.10.

$0.00 $1.00 $2.00 $3.00 $4.00 $5.00 $6.00 $7.00 $8.00 $9.00 $10.00

0% 2% 4% 6% 8% 10% 12% 14% 16% 18% 20%Levelized$/MMBtu

Savings Technical Potential as a % of 2018 Forecasted Non

‐ Electric Fuel Use

Note: Only includes measures with a levelized $/MMBTU < $10.00Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 84 Figure 31. Residential Non-Electric Energy Efficiency Supply (< $5/MMBTu) Curve for NH – Technical

Figure 32. Residential Non-Electric Efficiency Supply (< $10/MMBTu) Curve for NH – Max Achievable $0.00 $1.00 $2.00 $3.00 $4.00 $5.00 $6.00

0% 2% 4% 6% 8% 10% 12% 14% 16%Levelized$/MMBTU

Savings Technical Potential as a % of 2018 Forecasted Non

‐ Electric Fuel Use

Note: Only includes measures with a levelized $/MMBTU < $5.00

$0.00 $1.00 $2.00 $3.00 $4.00 $5.00 $6.00 $7.00 $8.00 $9.00 $10.00

0% 2% 4% 6% 8% 10% 12% 14%Levelized$/MMBtu

Savings Max Achievable Potential as a % of 2018 Forecasted Non

‐ Electric Fuel Use

Note: Only includes measures with a levelized $/MMBTU < $10.00Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 85 Figure 33. Residential Non-Electric Efficiency Supply (< $5/MMBTu) Curve for NH – Max Achievable

Figure 34. Residential Non-Electric Energy Efficiency Supply (< $10/ MMBTu) Curve for NH – M.A.C.E $0.00 $1.00 $2.00 $3.00 $4.00 $5.00 $6.00

0% 2% 4% 6% 8% 10% 12%Levelized$/MMBTU

Savings Max Achievable Potential as a % of 2018 Forecasted Non

‐ Electric Fuel Use

Note: Only includes measures with a levelized $/MMBTU < $5.00

$0.00 $1.00 $2.00 $3.00 $4.00 $5.00 $6.00 $7.00 $8.00 $9.00 $10.00

0% 2% 4% 6% 8% 10% 12% 14%Levelized$/MMBtu

Savings Max Achievable Cost Achievable as a % of 2018 Forecasted Non

‐ Electric Fuel Use

Note: Only includes measures with a levelized $/MMBTU < $10.00Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 86 Figure 35. Residential Non-Electric Energy Efficiency Supply (< $5/MMBTu) Curve for NH – M.A.C.E.



### It is important to note that these levelized costs per unit of energy saved values exclude the costs for potential marketing, program design, administration and evaluation that would be required to encourage customer participation and to ultimately achieve any portion of this sectors savings potential. $0.00 $1.00 $2.00 $3.00 $4.00 $5.00 $6.00

0% 2% 4% 6% 8% 10% 12%Levelized$/MMBTU

Savings Max Achievable Cost Achievable as a % of 2018 Forecasted Non

‐ Electric Fuel Use

Note: Only includes measures with a levelized $/MMBTU < $5.00Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 87 

# Section 5: Commercial Sector Energy Efficiency Potential

This section of the report presents the estimates of electric and non-electric technical (traditional), maximum achievable, maximum achievable cost effective, and potentially obtainable energy efficiency potential for the ex isting and new construction market segments of the commercial sector in New Hampshire. More information regarding how these potentials were derived is also presented.

According to this analysis, there is still a larg e remaining potential for electric and non-electric energy efficiency savings in the commercial sector. Table 46 and Table 47 below summarize the savings by potential type by the year 2018 for commercial electric and non-electric measures respectively (separate potentials are shown for new construction, existing buildings and combined within each table). 40 

### The estimated total costs to achieve each level of savings by 2018 are also presented in these tables. In addition, Table 46 presents peak demand savings for each potential level of savings associated with the electric energy efficiency

measures. 41

Table 46. Summary of Commercial Sector Electric Energy Efficiency Savings Potential

40 The commercial sector sales for ecast for the year 2018 was not available in terms of new and existing construction. As a result, in order to derive the split betw een new and existing construction, the growth of the sector over the ten (10) year study period was divided in half, and half was attributed to new construction sales, and the remaining half was attributed to growth in the existing sector.

41 For purposes of this study, a simplifying assumption was used to estimate peak demand savings. Percentage sector peak demand savings are calculated to show savings over the summer coincident peak demand period only and are not broken out separately for summer and winter peak periods. Estimated Cumulative Annual Sales by 2018 (kWh) Estimated Cumulative Annual Savings by 2018 (kWh) Savings in 2018 as % of

Total 2018 Electric

Consumption Estimated Cumulative Annual Demand Savings by 2018 By Sector (MW) Estimated % of Peak Demand Savings by 2018 Estimated Costs to

Achieve 2018

Cummulative Annual Savings ($ 2008 NPV)

Technical Potential (Traditional) 146,116,211 38.1% 54.0 1.8% $56,524,486

Max. Achievable Potential 99,371,416 25.9% 36.7 1.2% $44,385,181

Max. Achievable Cost

Effective 81,088,647 21.1% 30.0 1.0% $22,010,481

Potentially Obtainable 37,713,403 9.8% 13.9 0.5% $8,926,584

Technical Potential (Traditional) 1,451,916,034 29.2% 422.9 14.2% $914,692,446

Max. Achievable Potential 1,198,691,188 24.1% 349.1 11.7% $806,498,673

Max. Achievable Cost

Effective 985,683,305 19.8% 287.1 9.6% $289,826,583

Potentially Obtainable 454,309,206 9.1% 132.3 4.4% $115,897,185

Technical Potential (Traditional) 1,598,032,244 29.8% 476.9 16.0% $971,216,931

Max. Achievable Potential 1,298,062,604 24.2% 385.9 12.9% $850,883,854

Max. Achievable Cost

Effective 1,066,771,952 19.9% 317.1 10.6% $311,837,064

Potentially Obtainable 492,022,609 9.2% 146.3 4.9% $124,823,769 COMMERCIAL SECTOR - NEW CONSTRUCTION

COMMERCIAL SECTOR - EXISTING BUILDINGS 383,672,438

4,970,126,508

5,353,798,946 COMMERCIAL SECTOR - TOTALFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 88 Table 47. Summary of Commercial Non-Electric Energy Efficiency Savings Potential

Estimated Cumulative Annual Sales by 2018 (MMBtu) Estimated Cumulative

A nnual Savings by 2018 (MMBtu) Savings in 2018 as % of

Total 2018 Gas Consumption Estimated Costs to

Achieve 2018

Cummulative Annual Savings ($ 2008 NPV)

Technical Potential 1,696,543 29% $174,415,757
Achievable Potential 1,143,559 20% $109,001,402

Achievable Cost Effective

Potential 992,356 17% $58,593,673

Potentially Obtainable 401,855 7% $18,382,602

Technical Potential 10,284,474 26% $1,047,661,444
Achievable Potential 8,932,119 23% $927,481,632

Achievable Cost Effective

Potential 6,717,981 17% $266,103,608

Potentially Obtainable 2,850,349 7% $83,851,626

Technical Potential 11,981,017 26% $1,222,077,201
Achievable Potential 10,075,678 22% $1,036,483,035

Achievable Cost Effective

Potential 7,710,337 17% $324,697,281

Potentially Obtainable 3,252,204 7% $102,234,228 COMMERCIAL SECTOR - NEW CONSTRUCTION

5,793,062

39,536,853

COMMERCIAL SECTOR - EXISTING BUILDINGS

COMMERCIAL SECTOR - TOTAL

45,329,915



### On the electric side, the combined existing and new buildings maximum achievable cost effective potential in the commercial sector in 2018 is nearly 1 million kWh, just under 20percent of the New Hampshire commercial sector sales forecast in 2018. With regard to nonelectric potential for new and existing buildings combined, the maximum achievable cost effective potential in the commercial sector is over 7.7 million MMBTu, or 17% of the New Hampshire commercial sector fossil fuel (natural gas, oil and propane) sales forecast in 2018. The lists of measures that make up the savings for each of these levels are shown in Table 52 through Table 55 in Section 5.2.1 below.



## 5.1 Commercial Sector Savi ngs Methodology Overview

The commercial sector analysis was modeled using what is considered a “top-down approach”. This methodology, shown visually in Figure 36 below:

Figure 36. Commercial Sector Savings Methodology – Top Down ApproachFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 89 

### As shown in this figure, the methodology is started at the top with the total projected 2018 kWh sales for the commercial sector. Those sales are then split up by building type using SIC codes of actual customer data (provided to us by project sponsors). After the sales are distributed across the building types, they are broken down further to end-uses (e.g. lighting, space heating, appliances) within each of the building types. From the end-use level, the energy is then applied to each of the measures using applicability factors. The base case factor is applied first, to inform the model regarding how much of the sales in a particular end use was applicable to the specific measure in question. After identifying how much energy each measure uses within that end use (i.e., what degree of the end use sales is going to each measure), then models then look at the remaining factor. As discussed in Section 3, the remaining factor identifies what percentage of the building type in question already has the efficient measure. The remaining factor is then one minus that penetration – resulting in the percentage, by building type, of each measure that can still be installed in within the commercial sector. The model then considers the savings factor, which is defined is the percentage savings achievable from moving from a standard efficiency measur e to a high efficiency measure. Finally, adjustments are made for any technical limitations that would prevent the measure from being installed in certain applications via the conv ertible factor (engineering adjustment). This scenario is repeated for every measure within every building type, for new and existing construction, and for electric measures, and non-electric measures. The formula that has just been explained to calculate savings at the measure level is displayed below graphically



### .

Technical

Potential of

Efficient

Measure = Total End

Use kWh Sales by Building

Type X Base Case

Factor X Remaining

Factor X Convertible

Factor X Savings

Factor



### Measure interactivity is also considered so as to prevent overstating (double-counting) of savings. To better illustrate this point, in the case of lighting, consider the upgrade of a T-12 fixture to a T-8, and then the installation of an occupancy control. In such a case, the occupancy control is only able to save the amount of energy left after the upgrade has taken place. Through functionality included within the GDS supply curve model, measures are ranked by benefit cost ratio (highest to lowest) as a proxy to determine the order by which measures are installed. Through a combination of the proper classification of the base case factors, and the rankings in the supply curve model, the potential for double-counting is methodically

eliminated.

The supply curve model is designed in a manner that allows for each measure to have independent base, remaining, savings, and convertible factors for all of the nine (9) building types. In addition, every building type has its own energy consumption profile that defines how energy consumption within that building type is distributed among the end uses (e.g. lighting, water heating, appliances, etc) within the building type. This allows the model to run savings analyses on building specific energy consumption profiles and building specific energy savings profiles simultaneously in order to yield the most accurate and realistic savings potential estimates possible. In addition, individual models are run for commercial existing construction, and commercial new-construction for both electric and non-electric yielding a total of four unique (4) commercial supply curve models. The commercial electric models (existing and newFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 90 

### construction) were based on kWh sales in the year 2018, while the commercial non-electric model used 2018 MMBTu sales for natural gas, oil, and propane combined. 42



### The measures within each building type are organized and grouped by the end use energy consumption pools that they have the ability to pot entially save energy from. Lighting measures for instance are all working off of the lighting energy sales in the year 2018 as a basis or starting point for the energy savings potential within a particular building type. The ordering of the lighting related measures within this grouping is determined by benefit cost ratio. Measures with higher benefit cost ratios are assumed to be installed first, and then ranked in descending order on down the line. As a measure is installed, the model reduces the remaining sales left to be saved for the next measure (the actual algorithm for how this happens within the model on a measure to measure basis is more complex than what is being described here). So if a lighting fixture is upgraded, and then a control is installed, the control has less potential energy to save since the light it is controlling has already been upgraded to a more efficient version. This process is repeated until all measures within each end use are exhausted in order to yield the savings potential at the measure level, end-use level, and the building-type level.

The costs to achieve savings potential estimates within the commercial sector are calculated on a measure by measure basis using the leveliz ed cost ($/kWh in the electric model and $/MMBTu within the non-electric model) for each measure. These levelized costs represent the cost to save a unit of energy. These levelized costs are then taken and multiplied (again at the measure level) by the 2018 annual savings associated with the potential level we are attempting to capture (technical potential, maximum achievabl e, etc.). A net present value (NPV) formula is then used in conjunction with each measure’s measure life and an overall discount rate to determine the $ cost per first year kWh (or MMBTu) saved for each measure. The cost per first year savings figure is then multiplied by the savings potential estimate being evaluated in order to yield the cost to achieve the savings potential being quoted in the year 2018 at the measure level. Each measure is then summed up at each potential level to yield the total cost to achieve savings in the commercial sector (within the potential level being analyzed) to represent the cost to achieve the potential savings level by the year 2018. This number can then be divided by the study length (10 years) in order to yield an estimate of annual spending needed to reach the potential level target in question.

In addition, the model includes a number of measures that save energy across multiple end-use categories. Examples include retrocommissioning which can saves heating, cooling, and ventilation energy, and insulation which can provide both heating and cooling savings. As a result, these types of measure are placed within the model in a manner so that they can claim their proper savings within each one of the appropriate end-uses. A complexity occurs when attempting to properly estimate the cost for these measures. In order to avoid overstating the cost to install a measure like retrocommissioning, the cost needs to be divided across the different end-uses it affects. To simplify the modeling, it is assumed that the costs would be divided by the number of end-uses the measure effects. If the full cost for each end-use is applied, it would be inaccurate (i.e., for retrocommissioning, if the end-user is only paying for an engineer to walk-through the facility and assess and assist with implementation of identified savings opportunities in a single visit; the end-user will typically receive a single invoice for the combined retrocommissioning service, as opposed to multiple invoices being sent for implementation of each type of savings identified by the engineer). This approach is also used

42 We were only provided actual sales fo recasts through 2018 from the natural ga s utilities. In order to determine the projected forecasts for oil and propane in MMBTu, we ex trapolated based on the results of the commercial telephone survey (Question #16: What is the main energy source for heating?). The results of which yielded commercial customers in NH using natural gas to be 28%, oil at 46%, and bottled gas/propane at 26%. This allowed us to accurately estimate the year by year forecasts (particularly 2018) for all non-electric fuels combined.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 91 

### in the model for many of the building envelope and HVAC controls measures, as they often affect more than one end-use when installed. This approach is due mainly to GDS’s technical potential model’s functionality. The description abov e, is provided to explain to readers how the model, within its existing framework, has been used to ensure that double counting of costs is avoided for these types of measures.

Table 48 and Figure 37 illustrate the commercial sector electricity sales based segmentation. This segmentation is based on 2009 commercial sales data by SIC code as provided by project

sponsors.

Table 48. Commercial Sector Segmenta tion by Industry Type - Electric

Industry Type Commercial kWh Percent of kWh Sales* Business Categories
1 Warehouse 22,943,600 0.46% Wholesale Trade & Warehouse
2 Retail 1,305,235,571 26.26% Other Retail Trade

3 Grocer y 843,032,754 16.96% Food/Grocer y 4 Office 1,175,866,51 5 23.66% Business/Financial Services, Social Services, US Post Office, Government, Communications, Utilities, Transportation

5 Lodging 280,529,174 5.64% Lodging

6 Healt h 437,017,80 9 8.79% Hos p itals, Other Nursin g & Care, Medical Offices & Othe r
7 Education 536,887,562 10.80% Elementar y & Secondar y Schools, Colle g es & Education - Other

8 Restaurant 96,579,427 1.94% Restaurants, Eating & Drinking Establishments

9 Other 272,034,09 6 5.47% A griculture, Forestries & Fishing, Mining & Construction, Water & Wastewater, Entertainment

Total 4,970,126,508 100.00%

* Based on NH Utilities 2008 - 2017 Forecast and allocations from actual Sales Data by SIC code categories

Figure 37. Commercial Sector Segmenta tion by Industry Type - Electric



### Table 49 and Figure 38 illustrate the commercial sector non-electric sales based segmentation. This segmentation is based on 2009 commercial sales data by SIC code as provided by project

sponsors.

Table 49. Commercial Sector Segmentati on by Industry Type – Non-Electric

Industry Type Percent of Non-Electric Sales* Business Categories

1 Warehouse 5.58% Wholesale Trade & Warehouse

2 Retail 10.94% Other Retail Trade

3 Grocer y 1.82% Food/Grocer y 4 Office 19.87% Business/Financial Services, Social Services, US Post Office, Government, Communications, Utilities, Transportation 5 Lodging 7.81% Lodging

6 Health 10.49% Hos p itals, Other Nursin g & Care, Medical Offices & Other

7 Restaurant 9.67% Elementar y & Secondar y Schools, Colle g es & Education - Other 8 Education 11.38% Restaurants, Eating & Drinking Establishments

9 Other 22.44% A griculture, Forestries & Fishing, Mining & Construction, Water & Wastewater, Entertainment

Total 100.00%

* Based on US DOE, Energy Information Administration (EIA), 2003 Commercial Buildings Energy Consumption Survey, Tables C23A an d C25A

Natural Gas Energy Efficiency Resource Development Potential in New York, Prepared for New York Energy Research and Development Authority, by OPTIMAL ENERGY, INC., AMERICAN
COUNCIL FOR AN ENERGY-EFFICIENT ECONOMY, VERMONT ENERGY INVESTMENT CORPORATION, RESOURCE INSIGHT, INC., ENERGY AND ENVIRONMENTA L ANALYSIS,
INC., October 31, 2006 Warehouse

Retail

Grocery

Office Lodging Health Education Restaurant Other 

### NH Utilities Commercial Sector

Sales By Business SegmentFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 92 Figure 38. Commercial Sector Segmentati on by Industry Type – Non-Electric



## 5.3 Commercial Sector End-Use Breakdowns

Table 50 and Table 51 illustrate the commercial sector energy sales based segmentation. The breakdown of commercial electricity use by end-use and industry type was developed based ondata included in the 2003 New York Technical Potential Study while the breakdown for nonelectric was based on a similar New York Technical Potential Study 43 

### conducted in 2006. This study divided New York into regions and the Albany region (Region F) was used as a reasonable representation of the commercial sector in New Hampshire.

Table 50. Commercial Sector End Use Br eakdowns Allocation Table – Electric

Table 51. Commercial Sector End Use Brea kdowns Allocation Table – Non-Electric



## 5.4 Commercial Sector – Energy Efficiency Potential Results

One-hundred-twenty-five (125) commercial electric, and sixty seven (67) commercial nonelectric energy efficiency measures were included in the analysis for the commercial sector. In order to develop the list of energy efficiency measures to be examined, GDS worked closely

43 Natural Gas Energy Efficiency Resource Development Potential in New York, Prepared for New York Energy Research and Development Authority, by OPTIMAL ENERGY, INC., AMERICAN COUNCIL FOR AN ENERGY-EFFICIENT
ECONOMY, VERMONT ENERGY INVESTMENT CORPORAT ION, RESOURCE INSIGHT, INC., ENERGY AND
ENVIRONMENTAL ANALYSIS, INC., October 31, 2006 Warehouse

6%

Retail

11% Grocery

2%

Office

20% Lodging

8% Health

10% Restaurant

10% Education

11% Other

22% 

## NH Utilities Commercial Sector Non

‐ Electric Sales By Business
Segment

Non-Electric Warehouse Retail Grocery Office Lodging Health Restaurant Education Other

Space Heating 76% 62% 56% 72% 53% 45% 34% 60% 48%

Water Heating 16% 22% 25% 26% 34% 37% 27% 24% 29%

Cooking 3% 15% 17% 0% 9% 15% 37% 13% 20%

O ther 5% 1% 2% 2% 4% 4% 2% 3% 3%

Blank 0% 0% 0% 0% 0% 0% 0% 0% 0%

Warehouse Retail Grocery Office Lodging Health Restaurant Education Other TOTAL

Indoor Lighting 18% 25% 50% 38% 24% 28% 20% 43% 17% 29%

Outdoor Lighting 3% 2% 6% 4% 5% 2% 6% 4% 2% 4%

Cooling 2% 21% 18% 13% 13% 21% 10% 10% 8% 12%

Ventilation 10% 20% 10% 10% 18% 9% 7% 18% 6% 11%

Water Heating 1% 5% 5% 2% 8% 6% 16% 6% 4% 5%

Refrigeration 58% 9% 1% 1% 3% 3% 32% 2% 20% 13%

Space Heating 4% 12% 4% 13% 20% 9% 4% 9% 3% 8%
Office Equipment 2% 2% 2% 11% 3% 2% 1% 4% 2% 4%

Miscellaneous 3% 3% 3% 8% 5% 21% 3% 4% 38% 14%

TOTAL 100% 100% 100% 100% 100% 100% 100% 100% 100% 100%Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 93 

### with project sponsors and reviewed recent measure life, savings and cost assumption studies including a Measure Life Report prepared by GDS for the New England State Program Working Group in June 2007 and a GasNetworks measures assumptions update project completed by GDS during the summer 2008. In addition, GDS reviewed other related electric and non-electric commercial sector energy efficiency measure-specific data sources and technical potential studies that have been conducted recently in th e US. Focus was for comprehensiveness on the electric and natural gas measures, less so for fuel oil and propane. Even within electric and natural gas some measure limitations were required (e.g., Data Center/IT, etc.).

The set of energy efficiency measures consi dered was pre-screened to mainly those measures that are currently commercially available (or were estimated to be cost effective within the ten year study period). Thus, emerging technologie s not currently in the marketplace that had benefit cost ratios below 0.9 were not included in the analysis. The portfolio of measures includes retrofit and replace on burnout programmatic approaches to achieve energy efficiency savings.



### 5.2.1 Characteristics of Energy Efficiency Measures GDS collected data on the energy savings, incremental costs, useful lives and other key “per

unit” characteristics of each of the commerc ial electric and non-electric energy efficiency measures, this data is available in Appendix F for the commercial sector. Estimates of the sizeof the eligible market were also developed for each efficiency measure. For example, electric T5 lighting efficiency measures are only applicable to those commercial building types in New Hampshire that have the potential to use that lighting technology in their building space.

The commercial sector analysis was based on the most recent sales forecasts for New Hampshire for the years 2009 to 2018. 44 

### For the commercial new construction market segment, GDS calculated a forecast of the new construction sales estimated to be built each year based on looking at the growth of the sector over the 10 year period, and making the assumption that half of that growth is from new construction, while the other half is coming from growth of existing buildings. This assumption was approved by the project sponsors, and has been used in previous technical potential projects around the US. The sizes of various end-use market segments were informed based on project primary data collection efforts.

Energy-efficiency measures were analyzed for the most important electric and non-electric consuming end uses in the Commercial sector including:



### • Space heating



### • Water heating



### • Air conditioning



### • Lighting



### • Appliances



### • Pools



### • Cooking



### • Motors



### • Transformers



### • Ventilation

44 This Commercial sector load forecast wa s provided to GDS by project sponsors.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 94 

### Tables 45 

### 52 through 55 below list the commercial sector electric and non-electric energy
efficiency measures included in the technical (traditional), maximum achievable, maximum
achievable cost effective, and potentially obtainable potential analyses. The portfolio of
measures includes retrofit, and replace on bur nout programmatic approaches to achieve energy
efficiency savings. More information regarding measure-specific savings, cost and measure life
assumptions can be found in Appendix F.Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.95Table 52. Commercial ElectricSavings Potential by Measure – Existing BuildingsFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.96Table 52. Commercial ElectricSavings Potential by Measure – Existing Buildings(continued)Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.97Table 53. Commercial ElectricSavings Potential by Measure – New ConstructionFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.98Table53. Commercial ElectricSavings Potential by Measure – New Construction(continued)Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.99Table 54. Commercial Non-ElectricSavings Potential by Measure – Existing ConstructionFinal Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.100Table 55. Commercial Non-ElectricSavings Potential by Measure – New ConstructionFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 101 

### The distribution of commercial sector electric and non-electric savings by end use is shown below in Figure 39 through Figure 42 for existing and new buildings. On the electric side, for the commercial sector in New Hampshire, the electric lighting end use still represents the largest savings potential in absolute terms for both energy and peak demand, despite the significant adoption of high-efficiency lighting since the 1990’s. Refrigeration represents the second largest end-use category for kWh savings and space heating and cooling makes up the third largest category for kWh savings. On the non-electric side, for the commercial sector in New Hampshire, the space-heating end use represents the largest savings potential (nearly 75%). Space heating is followed up by water heating, and the remainder is brought up by cooking, pools, and ventilation.

Figure 39. Commercial Electric Max. Achievable Cost Effective Savings By End Use – Existing

Figure 40. Commercial Electric Max. Achievable Cost Effective Savings By End Use – New Lighting Refrigeration HVAC

Controls Lighting

Controls Ventilation Space
Cooling
‐ Unitary and Split AC Space

Heating Building
Envelope Non

‐ HVAC

Motors Water

Heating Appliances,

Computers,

Office
Equipment Space
Cooling
‐ Chillers Transformers Pools Cooking Compressed

Air Lighting

Design

Total 283,670,28 187,253,17 131,425,55 97,827,958 54,098,624 39,271,838 34,040,704 30,813,566 30,024,310 29,382,954 28,568,618 23,237,346 6,669,8 86 5,391,617 2,630,755 1,376,113 ‐ ‐ 50,000,000 100,000,000 150,000,000 200,000,000 250,000,000 300,000,000kWhSavings

Lighting

Design Refrigeratio

n Building
Envelope Ventilation Space
Cooling
‐ Chillers Space
Cooling
‐ Unitary and Split AC Space

Heating Non

‐ HVAC

Motors Water
Heating Appliances,

Computers,

Office
Equipment HVAC

Controls Transforme

rs Pools Cooking Compressed

Air

MACE kWh Savings 33,661,856 14,455,141 8,799,382 5,585,479 2,995,167 2,978,667 2,627,796 2,317,748 2,268,238 2,205,375 1,953,389 514,887 416,210 203,083 106,230

% of MACE 41.5% 17.8% 10.9% 6.9% 3.7% 3.7% 3.2% 2. 9% 2.8% 2.7% 2.4% 0. 6% 0.5% 0.3% 0.1% ‐ 5,000,000 10,000,000 15,000,000 20,000,000 25,000,000 30,000,000 35,000,000 40,000,000kWhSavingsFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 102 Figure 41. Commercial Max. Achievable Cost Effective Non-Electric Savings By End Use – Existing

Figure 42. Commercial Max. Achievable Cost Effective Non-Electric Savings By End Use – New Space Heating HVAC Controls Water Heating Building
Envelope Pools Cooking Ventilation

MACE 2,945,089 1,137,607 1,114,772 911,895 263,209 256,502 88,907

% of MACE 43.8% 16.9% 16.6% 13.6% 3.9% 3.8% 1.3% ‐ 500,000 1,000,000 1,500,000 2,000,000 2,500,000 3,000,000 3,500,000MMBtuSavings

Space Heating Water Heating Building
Envelope HVAC Controls Pools Cooking Ventilation

MACE Savings 435,153 163,340 154,646 150,041 38,566 37,583 13,027

% of MACE 43.9% 16.5% 15.6% 15.1% 3.9% 3.8% 1.3% ‐ 50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000 450,000 500,000MMBtuSavingsFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 103 

### 5.2.2 Commercial Energy Effici ency Measure Supply Curves

This report also presents results in the form of electric and non-electric energy efficiency supply curves. Figure 43 through Figure 48 present the electric existing and new construction supply curves under each scenario (technical potential, maximum achievable, maximum achievable cost effective). Figure 49 through Figure 54 present supply curves for the non-electric existing and new construction scenario (technical potent ial, maximum achievable, maximum achievable cost effective). As in the residential sector, these supply curves were built up across individual measures and were sorted on a lowest to highest cost basis per unit of energy saved.

Figure 43. Commercial Electric Supply Curve: Existing Buildings – Technical Potential Scenario

Figure 44. Commercial Electric Supply Curve: Existing Buildings – Max. Maximum Achievable

Figure 45. Commercial Electric Supply Curve: Existing Buildings – Max. Achievable Cost Effective $0.00 $0.05 $0.10 $0.15 $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0.50

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized$/kWhSaved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Commercial Buildings Technical Potential Supply Curve

$0.00 $0.05 $0.10 $0.15 $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0.50

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized$/kWhSaved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Commercial Buildings ‐ Maximum Achievable Supply Curve

$0.00 $0.05 $0.10 $0.15 $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0.50

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized$/kWhSaved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Commercial Buildings ‐ Cost Effective Supply CurveFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 104 Figure 46. Commercial Electric Supply Curve: New Buildings – Technical Potential Scenario

Figure 47. Commercial Electric Supply Curve: New Buildings – Max. Achievable

Figure 48. Commercial Electric Supply Curve: New Buildings – Max. Achievable Cost Effective $0.00 $0.05 $0.10 $0.15 $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0.50

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized$/kWhSaved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Commercial Buildings ‐ Technical Potential Supply Curve

$0.00 $0.05 $0.10 $0.15 $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0.50

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized$/kWhSaved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Commercial Buildings ‐ Maximum Achievable Supply Curve

$0.00 $0.05 $0.10 $0.15 $0.20 $0.25 $0.30 $0.35 $0.40 $0.45 $0.50

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized$/kWhSaved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Commercial Buildings ‐ Cost Effective Supply CurveFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 105 Figure 49. Commercial Non-Electric Supply Curve: Existing Buildings – Technical Potential

Figure 50. Commercial Non-Electric Supply Curve: Existing Buildings – Max. Achievable

Figure 51. Commercial Non-Electric Supply Curve: Existing Buildings – Max. Achievable Cost Effective $0.00 $5.00 $10.00 $15.00 $20.00 $25.00

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized $/MMBtu Saved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Non-Electric Commercial -Tech. Potential Supply Curve

$0.00 $5.00 $10.00 $15.00 $20.00 $25.00

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized $/MMBtu Saved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Non-Electric Commercial - Max. Achievable Supply Curve

$0.00 $5.00 $10.00 $15.00 $20.00 $25.00

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized $/MMBtu Saved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Non-Electric Commercial - Cost Effective Supply CurveFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 106 Figure 52. Commercial Non-Electric Supply Curve: New Buildings – Technical Potential

Figure 53. Commercial Non-Electric Supply Curve: New Buildings – Max. Achievable

Figure 54. Commercial Non-Electric Supply Curve: New Buildings – Max. Achievable Cost Effective $0.00 $5.00 $10.00 $15.00 $20.00 $25.00

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized $/MMBtu Saved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Non-Electric - Commercial Tech. Potential Supply Curve

$0.00 $5.00 $10.00 $15.00 $20.00 $25.00

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized $/MMBtu Saved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Non-Electric Commercial - Max. Achievable Supply Curve

$0.00 $5.00 $10.00 $15.00 $20.00 $25.00

0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50%Levelized $/MMBtu Saved

Commercial Buildings Savings Potential as Percent of Commercial Sales 

### NH Non-Electric Commercial - Cost Effective Supply CurveFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 107 

# Section 6: Industrial Sector Energy Efficiency Potential

This section of the report presents the estimates of electric and non-electric technical (traditional), maximum achievable, maximum achievable cost effective, and potentially obtainable energy efficiency potential for the ex isting and new construction market segments of the industrial sector in New Hampshire. More information regarding how these potentials were derived is also presented.

According to this analysis, there is still a larg e remaining potential for electric and non-electric energy efficiency savings in the industrial sector. Table 56 and Table 57 below summarize the savings by potential type by the year 2018. In addition, Table 56 presents peak demand savings for each potential level of savings associated with the electric energy efficiency

measures. 45



### On the electric side, the combined existing and new buildings maximum achievable cost effective potential in the industrial sector is over 440 million kWh, or 21 percent of the New Hampshire industrial sector sales forecast in 2018. With regard to non-electric potential, the maximum achievable cost effective potential in the industrial sector is 1.4 million MMBTu, or 9 percent of projected New Hampshire industrial sector natural gas, oil and propane sales in

2018.

The results on both the electric and non-electric tables below display the Maximum Achievable being equal to the Maximum Achievable Cost Effective potential. This is due to the end-uses being screened in a combined manner, rather than at the measure level. While there is a high

likelihood that some measures within each of th e end-uses would screen as not cost-effective, given that this analysis was done at the end-use level, modeling limitations prevented consideration of such measure-specific results.

Table 56. Summary of In dustrial Sector Electric Energy Efficiency Savings Potential

45 For purposes of this study, a simplifying assumption was used to estimate peak demand savings. Percentage sector peak demand savings are calculated to show savings over the summer coincident peak demand period only and are not broken out separately for summer and winder peak periods. Estimated Annual Sales by 2018

(kWh) Estimated Annual Savings by 2018 (kWh) Savings in 2018

as % of Sector

2018 Electric Consumption Savings in 2018

as % of Total

2018 Electric Consumption Estimated Annual Sales by 2018

(MW) Estimated Annual Demand Savings by 2018 By Sector (MW) Estimated Savings as %

of Peak Sector Demand by

2018 Estimated Savings as %

of Total Peak Demand by

2018 Estimated Costs to

Achieve 2018 Annual Savings (10 Year Cumulative)

($2008 NPV) Total Estimated

Annual Benefits

Associated

W/Combined Savings in 2018 ($2008 NPV) Simple Payback
(NPV Total Costs /

NPV Annual Savings)

Technical Potential (Traditional) 515,485,621 24.5% 4.0% 109.7 22.0% 3.7% $133,914,929 46,000,232 $ 2.9
Max. Achievable Potential 442,671,155 21.1% 3.4% 94.2 18.9% 3.2% $114,998,894 39,502,510 $ 2.9 Max. Achievable Cost Effective 442,671,155 21.1% 3.4% 94.2 18.9% 3.2% $114,998,894 39,502,510 $ 2.9 Potentially Obtainable 213,810,168 10.2% 1.6% 81.9 16.5% 2.7% $55,544,466 19,079,712 $ 2.9 2,102,729,959 498 INDUSTRIAL SECTORFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 108 Table 57. Summary of Indu strial Sector Non-Electric Energy Efficiency Savings Potential



## 6.1 Industrial Sector Savings Methodology Overview

The Industrial sector analysis was modeled using what is considered a “top-down approach”.
This methodology, shown visually in Figure 55 below:

Figure 55. Industrial Sector Savings Methodology – Top Down Approach



### Similar to the commercial sector, this top-down methodology starts with the total projected 2018 kWh sales for the industrial sector, and then splits those sales up by industry type using SIC codes of actual customer data (provided to GDS by project sponsors). After the sales are distributed across the industry types, they are broken down further to specific end-uses (e.g. lighting, space heating, appliances) within each of the building types. This was done using the 2002 Mechanical Energy Consumption Survey data (MECS) 46 

### for the New England Region. Given that the industrial sector equipment sto ck consists of highly specialized custom equipment, this sector was modeled at the end-use level as opposed to the detailed measure level. The end-uses being modeled in the Industrial sector include the following:

• Conventional Boiler Use

• CHP and/or Cogeneration Process

• Process Heating

• Process Cooling and Refrigeration

• Machine Drive

• Electro-Chemical Processes

46 2002 Manufacturing Energy Consumption Survey (M ECS) Data (http://www.eia.doe.gov/emeu/mecs/mecs2002/) Estimated Annual Sales

by 2018 (MMBtu) Estimated Annual Savings by 2018 (MMBtu) Savings in 2018 as % of

Sector 2018 Non-Electric

Fuel Consumption Savings in 2018 as % of

Total 2018 Non-Electric

Fuel Consumption Estimated Costs to Achieve 2018 Annual Savings (10 Year Cumulative)

($2008 NPV) Total Estimated

Annual Benefits

Associated W/Combined Savings in 2018 ($2008 NPV) Simple Payback
(NPV Total Costs / NPV Annual Savings)

Technical Potential (Traditional) 1,755,089 11.2% 1.9% 19,467,779 $ 16,623,765 $ 1.2
Max. Achievable Potential 1,415,809 9.0% 1.5% 15,704,417 $ 13,410,187 $ 1.2
Max. Achievable Cost Effective 1,415,809 9.0% 1.5% 15,704,417 $ 13,410,187 $ 1.2 Potentially Obtainable 683,836 4.4% 0.7% 7,585,234 $ 6,477,120 $ 1.2 INDUSTRIAL SECTOR

15,673,818Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 109 

### • Other Process Use

• Facility HVAC

• Facility Lighting

• Other Facility Support

• Onsite Transportation

• Compressed Air

• Sensors & Controls

• End Use Not Reported

Once sales is applied to each of the end-uses in both the electric models and the non-electric models, an all-inclusive applicability factor is applied to each end-use within each of the industry types to determine industry specific savings by end- use. This all inclusive applicability factor is applied to the end-use sales by industry type and takes into account the four (4) factors that have been used throughout this study (i.e., the base case factor, remaining factor, savings factor, and convertible factor). Detailed measure end-use specific factors and related information can be found within Appendix G of this report.

The cost to achieve savings estimates within the industrial sector are calculated by multiplying the levelized cost per first year kWh or MMBTu savings within each measure category (e.g. machine drive, facility lighting, etc.) by the kWh or MMBTu savings in 2018 for the potential level being evaluated (e.g. technical potential, maximum achievable, etc.). The result of which is the cost to achieve the savings potential being quoted in the year 2018. This number can then be divided by the study length (10 years) in order to yield an estimate of annual spending needed to reach the potential level target in question.

New Hampshire-specific industry types identified and used in the industrial models included the following:

• Apparel And Other Finished Products Made From Fabrics And Similar Materials

• Chemicals And Allied Products

• Electronic And Other Electrical Equi pment And Components, Except Computer Equipment

• Fabricated Metal Products, Except Machinery And Transportation Equipment

• Food And Kindred Products

• Furniture And Fixtures

• Industrial And Commercial Machinery And Computer Equipment

• Leather And Leather Products

• Lumber And Wood Products, Except Furniture

• Measuring, Analyzing, And Controlling Instruments; Photographic, Medical, And Optical Goods; Watches And Clocks

• Miscellaneous Manufacturing Industries

• Paper And Allied Products

• Petroleum Refining And Related Industries

• Primary Metal Industries

• Printing, Publishing, And Allied Industries

• Rubber And Miscellaneous Plastics Products

• Stone, Clay, Glass, And Concrete Products

• Textile Mill Products

• Tobacco Products

• Transportation EquipmentFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### More information on the distribution of energy usage within each of these industrial building type categories is presented in the following section.



## 6.2 Industrial Sector Segmentation

Table 58 and Table 59 illustrate the industrial sector electricity and non-electric sales based segmentation. This segmentation is based on 2009 Industrial sales data by SIC code as provided by project sponsors.

Table 58. Industrial Sector Segmen tation by Industry Type - Electric

Table 59. Industrial Sector Segmenta tion by Industry Type – Non-Electric Industry % Of Sales 2018 kWh Sales

Apparel And Other Finished P roducts Made From Fabrics And Similar Materials 0.23% 4,841,139

Chemicals And Allied Products 0.98% 20,537,715

Electronic And Other Electrical Equipment And Components, Except Compu ter Equipment 15.58% 327,660,088

Fabricated Metal Products, Except Machinery And Transportation Equipment 5.74% 120,602,372

Food And Kindred Products 8.88% 186,807,201

Furniture And Fixtures 0.56% 11,827,540

Industrial And Commercial Machinery And Compu ter Equipment 10.22% 215,000,038

Leather And Leather Products 0.68% 14,208,070

Lumber And Wood Products, Excep t Furnitu re 4.03% 84,834,419

Measuring, Analyzing, And Controlling Instruments; Photographic, Medical, And Optical Goods; Watches And Clocks 6.07% 127,539,458

Miscellaneous Manufacturing Indus tries 3.73% 78,459,698

Paper And Allied Products 6.66% 140,041,116

Petroleum Refining And Related Industries 0.94% 19,849,417

Primary Metal Industries 9.93% 208,709,932

Printing, Publishing, And Allied Industries 3.14% 66,122,451

Rubber And Miscellaneous Plastics Products 14.25% 299,645,250

Stone, Clay, Glass, And Concrete Products 3.98% 83,769,711

Textile Mill P roducts 2.18% 45,780,294

Tobacco Products 0.04% 761,224

Transportation Equipment 2.17% 45,732,822

Totals: 100.00% 2,102,729,959

Industry % Of Sales 2018 Therms Sales

Apparel And Other Finished P roducts Made From Fabrics And Similar Materials 0.27% 153,399

Chemicals And Allied Products 0.95% 542,309

Electronic And Other Electrical Equipment And Components, Except Compu ter Equipment 2.73% 1,557,367

Fabricated Metal Products, Except Machinery And Transportation Equipment 5.59% 3,184,570

Food And Kindred Products 15.00% 8,550,090

Furnitu re And Fixtures 0.26% 149,910

Indu strial And Commercial Machinery And Compu ter Equipmen t 1.71% 973,233

Leather And Leather Products 0.79% 450,206

Lumber And Wood Products, Excep t Furnitu re 1.89% 1,075,247

Measuring, Analyzing, And Controlling Instruments; Photographic, Medical, And Optical Goods; Watches And Clocks 8.18% 4,663,035

Miscellaneous Manufacturing Indus tries 1.45% 828,708

Paper And Allied Products 20.96% 11,946,935

Petroleum Refining And Related Industries 7.62% 4,342,829

Primary Metal Industries 19.34% 11,022,195

Printing, Publis hing, And Allied Industries 1.38% 785,699

Rubber And Miscellaneous Plastics Products 4.54% 2,589,478

Stone, Clay, Glass, And Concrete Products 3.88% 2,211,984

Textile Mill P roducts 2.55% 1,450,624

Tobacco Products 0.06% 34,841

Transportation Equipment 0.85% 483,040

Totals: 100.00% 56,995,702Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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## 6.3 Industrial Sector End-Use Breakdowns

Table 60 and Table 61 illustrate the Industrial sector energy sales based segmentation across end uses. The breakdown of Industrial electricity use by end-use and industry type was developed based on the 2002 Mechanical E nergy Consumption Survey (MECS 47 

### ) data for the New England region.

47 2002 Manufacturing Energy Consumption Survey (M ECS) Data (http://www.eia.doe.gov/emeu/mecs/mecs2002/)Final Report:Additional Opportunities for Energy Efficiency in New HampshireJanuary,2009GDS Associates, Inc.112Table 60. Industrial Sector End UseBreakdowns by Industry Type – ElectricTable 61. Industrial Sector End Use Breakdowns by Industry Type – Non-Electric2018 kWh SalesNew Hampshire Specific IndustryConventionalBoiler UseCHP and/orCogenerationProcessProcessHeatingProcessCooling andRefrigerationMachine DriveElectro-ChemicalProcessesOtherProcess UseFacilityHVACFacilityLightingOther FacilitySupportOnsiteTransportationCompressed AirEnd UseNotReported4,841,139 Apparel And Other Finished Products Made From Fabrics And Similar Materials0% 0% 4% 4% 36% 0% 0% 23% 15% 3% 0% 14% 2%20,537,715 Chemicals And Allied Products0% 0% 4% 9% 57% 14% 0% 6% 5% 1% 0% 2% 0%327,660,088 Electronic And Other Electrical Equipment And Components, Except Computer Equipment0% 0% 19% 4% 36% 3% 1% 17% 13% 3% 0% 4% 0%120,602,372 Fabricated Metal Products, Except Machinery And Transportation Equipment0% 0% 23% 3% 44% 1% 0% 10% 9% 2% 0% 7% 1%186,807,201 Food And Kindred Products0% 0% 3% 27% 48% 0% 0% 7% 7% 1% 0% 6% 1%11,827,540 Furniture And Fixtures1% 0% 6% 3% 53% 0% 0% 8% 18% 0% 0% 10% 1%215,000,038 Industrial And Commercial Machinery And Computer Equipment0% 0% 7% 3% 49% 1% 1% 18% 14% 3% 0% 4% 0%14,208,070 Leather And Leather Products0% 0% 3% 27% 38% 0% 0% 11% 12% 2% 0% 7% 1%84,834,419 Lumber And Wood Products, Except Furniture0% 0% 5% 1% 72% 0% 0% 8% 9% 0% 0% 5% 0%127,539,458 Measuring, Analyzing, And Controlling Instruments; Photographic, Medical, And Optical Goods; Watches And Clocks0% 0% 12% 7% 50% 9% 0% 9% 7% 2% 0% 3% 0%78,459,698 Miscellaneous Manufacturing Industries0% 0% 9% 6% 36% 0% 0% 20% 14% 4% 0% 8% 1%140,041,116 Paper And Allied Products0% 1% 2% 2% 82% 1% 0% 4% 4% 1% 0% 2% 0%19,849,417 Petroleum Refining And Related Industries1% 0% 8% 4% 81% 0% 0% 3% 3% 0% 0% 0% 0%208,709,932 Primary Metal Industries0% 0% 29% 1% 30% 32% 0% 4% 3% 1% 0% 1% 0%66,122,451 Printing, Publishing, And Allied Industries0% 0% 2% 4% 49% 0% 0% 18% 11% 3% 0% 11% 1%299,645,250 Rubber And Miscellaneous Plastics Products0% 0% 14% 8% 52% 0% 1% 10% 8% 3% 0% 3% 0%83,769,711 Stone, Clay, Glass, And Concrete Products0% 0% 20% 4% 59% 0% 1% 6% 5% 1% 0% 3% 0%45,780,294 Textile Mill Products0% 0% 10% 9% 58% 0% 0% 8% 7% 2% 0% 5% 1%761,224 Tobacco Products0% 0% 3% 14% 44% 0% 1% 27% 9% 0% 0% 2% 0%45,732,822 Transportation Equipment0% 0% 9% 4% 43% 1% 1% 19% 15% 3% 1% 3% 0%2,102,729,959% kWh Sales by Industry & End UseSource: 2002 Manufacturing Energy Consumption Survey (MECS) Data (http://www.eia.doe.gov/emeu/mecs/mecs2002/)2018 ThermsSalesNew Hampshire Specific IndustryConventionalBoile r UseCHP and/orCogenera tionProces sProcess He atingProcessCooling andRefrigerationMachi ne DriveOtherProcess UseFacility HVACFacilityLighting153,399 Apparel And Other Finished Pr oducts Made From F abrics And Similar Materials 25% 0% 25% 0% 0% 0% 19% 0%542,309 Chemicals And Allied Products27% 28% 35% 2% 3% 2% 2% 0%1,557,367 Electronic And Other E lectric al Equipment And Components, Except Computer Equipment12% 0% 53% 0% 0% 0% 29% 0%3,184,570 Fabricated Metal Products, Ex cept Machinery And Transportation E quipment 4% 0% 62% 0% 1% 0% 21% 0%8,550,090 Food And Kindr ed Products41% 7% 38% 0% 2% 1% 7% 0%149,910 Furniture And Fixtures4% 0% 42% 0% 0% 0% 46% 0%973,233 Indus tr ial And Commercial Machinery And Computer Equipment 16% 1% 36% 0% 3% 0% 36% 0%450,206 Leather And Leather Produc ts75% 0% 0% 0% 0% 0% 25% 0%1,075,247 Lumber And W ood Products , Except Furniture27% 0% 48% 0% 2% 2% 14% 0%4,663,035 Meas uring, Analyz ing, And Controlling Instruments ; P hotographic, Medical, And Optical Goods; W atches And Cloc ks 23% 15% 47% 1% 2% 1% 8% 0%828,708 Miscellaneous Manufacturing Industries29% 0% 26% 0% 0% 0% 32% 0%11,946,935 Paper And Allied Produc ts29% 32% 26% 1% 4% 0% 5% 0%4,342,829 Petr oleum Refining And Related Industries18% 15% 60% 0% 1% 0% 2% 0%11,022,195 Primary Metal Industries6% 5% 79% 1% 0% 0% 7% 0%785,699 Printing, Publishing, And Allied Industries13% 0% 40% 0% 2% 0% 33% 0%2,589,478 Rubber And Miscellaneous Plastic s Products37% 2% 29% 1% 1% 1% 19% 0%2,211,984 Stone, Clay , Glass, And Concrete Products3% 1% 85% 0% 0% 0% 5% 0%1,450,624 Textile Mill Products21% 0% 39% 0% 3% 0% 21% 0%34,841 Tobacco Produc ts50% 0% 25% 0% 0% 0% 25% 0%483,040 Tr ansportation Equipment26% 2% 32% 1% 1% 0% 31% 0%56,995,702% Gas Sales by Industry & End UseSourc e: 2002 Manufacturing Energy Cons umption Survey (MECS) Data ( http://www.eia.doe.gov/emeu/mecs/mec s2002/)Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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## 6.4 Industrial Sector – Energy Efficiency Potential Results

Fourteen (14) industrial specific end-uses were included in the analysis for the industrial sector. In order to develop the list of energy efficien cy end-uses examined, GDS worked closely with project sponsors as well reviewed other related electric and non-electric energy efficiency technical potential studies that have been conducted recently in the US.

Figure 56 and Figure 57 display a graphical comparison of the maximum achievable cost effective energy efficiency savings potential results by end use within the industrial sector (for electric and non-electric measures respectively). As shown in these figures, 40 percent of the electric savings comes from motors, followed by sensors and controls at 16 percent, facility lighting at 15 percent, and process heating at 13 percent. The remainder is made-up by compressed air and process cooling and refrigeration. With regard to savings from non-electric end-uses, process heating contributes the most at 52 percent of the savings, followed by conventional boiler use at 33 percent, facility HVAC at 13 percent, and the remaining 2 percent being classified as end-use not reported. Electric and non-electric savings allocations by building type are shown in Figure 58 and Figure 59 respectively.

Figure 56. Industrial Max. Achi evable Cost Effective Electric Savings by End Use

Figure 57. Industrial Max. Achiev able Cost Effective Non-Electric Savings by End UseFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 114 Figure 58. Industrial Max. Achi evable Cost Effective Electric Savings by Building Type

Figure 59. Industrial Max. Achiev able Cost Effective Non-Electric Savings by Building TypeFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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# Section 7: Primary Data Collection Highlights

This project included a major enhancement to most of the technical potential studies that have been conducted across the country in the past. Rather than relying on best available information from existing secondary sources to estimate current levels of energy using equipment saturations and penetration of energy e fficiency measures, significant primary data collection efforts were undertaken to help inform and derive New Hampshire-specific values where possible. The focus of this Section is to provide information on how the results from this project’s primary data collection efforts were used to help derive New Hampshire sector-specific estimates of energy using equipment saturation s (base factors) and the penetration of energy efficiency measures (remaining factors). These factors were required inputs to the project’s energy efficiency potential assessment models.

As highlighted below, a substantial amount of detailed information was gathered in the primary data collection efforts for this project. Although not all information collected was directly applied as model inputs, the data will serve as a valuable resource for future studies. The information obtained from the data collected includes the following:

Ownership Characteristics : The telephone surveys and site visits collected information on whether the facilities were owned or leased, the building type, the approximate age and size of the buildings, the number of employees, and building schedules (i.e. hours of operation). Results are summarized in Appendix J

.

Fuel Usage : Information was collected on the primary types of fuel usage (i.e. oil, natural gas, etc.) as well as the specific gas and electric utility providers for each facility. This information was useful in developing cross tabulations of other data to determine trends within groups of customer types. The surveys were also used to determine whether any facilities had on-site power generation and to identify the capacity and uses of such on-site generation.

Efficiency Attitudes : Valuable information regarding customer attitudes towards energy efficiency and utility sponsored programs was collected, including primary motivations and barriers to participating in currently offered programs. Results were summarized in detail in Section 3.3 of this report.

Heating and Cooling : The surveys collected data on the types of heating and cooling systems employed in each facility. The site visits, in particular, collected detailed information on the systems including but not limited to run times, heating and cooling capacity, motor horsepower and efficiency, humidity control, presence of outside air economizers, presence of variable air volume control, heat recovery, fuel used, and the approximate age and condition of the systems.

Building Envelope : The site surveys gathered information on the general condition of building envelopes including wall types, insulation types, roof and floor construction, interior and exterior finish and color, and building fenestration (windows).

Water Heating : Much of the survey information regarding water heating was directly applicable to the energy efficiency assessment potential model s. The site surveys also collected detailed information on the types of water heating storage and distribution systems, areas served, capacities, insulation, process heating, and the relative age and condition of the systems.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### Motors : Substantial information regarding motors was collected including the total number of units, service, types of control, drive ty pe, run hours per week, and the approximate age and

condition of the motors.

Refrigeration Equipment : The surveys collected detailed information on the number and type of both commercial and non-commercial refrigeration equipment. Other valuable information collected included the amperage draw of commer cial equipment, whether the equipment was ENERGY STAR, defrost control types, number, size and efficiency of compressors and condensers, and the relative condition of the systems in each facility.

Compressed Air : The site surveys gathered information on all compressed air systems, including the type and application of each compressor, the control type, size (horsepower), total number of units, nominal efficiencies, driv e types, average age, run hours per week, and manufacturer and model numbers. The site surveys were also used to determine whether the facilities had a leak reduction maintenance program and to assess the overall condition of the compressed air systems.

Process Heating : The site surveys gathered informat ion on all process heating systems, including the type of process, the products produced, the number of machines, rated heat inputs, whether waste heat recovery is utilized, primary fuel used, the average age of equipment, and the average run hours per week. The condition of process heating systems at each facility was also assessed.

Cooking & Food Service Equipment : Where applicable, the site surveys gathered information on cooking and food service equipment. Information gathered included the total number of both electric and gas fueled units and the average fuel usage for each type of equipment.

As discussed in more detail in Sections 7.1 and 7.2 below, where applicable, elements from this information were used to develop model-required base and remaining factors.

7.1 Data Summary and Analysis
The primary data collection efforts were summarized in Section 3.1 of this report, and included conducting 400 telephone surveys of residential customers, 200 telephone surveys of small commercial and industrial customers, and 200 site visits of large commercial and industrial customers. The methodologies utilized to create the survey instruments and sampling plans were outlined in detail in Sections 3.1.1 and 3.1.2, respectively. Data obtained from the surveys and site visits were coupled with secondary data collection and analysis where necessary, to develop New Hampshire-specific values for sa turations and penetrations used in the GDS Team’s sector-specific energy efficiency potential calculation models (referred to in the models as base and remaining factors). These primary data collection efforts were also used to assess customer attitudes towards energy efficiency programs and practices, including awareness, motivations and barriers, results of which were summarized earlier in Section 3.3 of this report.

Data collected from the residential and small commercial and industrial telephone surveys were analyzed by Research Into Action (RIA) using SPSS statistical software. 48 

### During this process, GDS worked with RIA to identify the specific survey questions and develop the cross tabulations needed to derive base and remaining factors for use in the models. Data collected from the large commercial and industrial site visits were recorded in paper files and entered manually into an analyzable Excel spreadsheet file. The data was organized and sorted by relevant

48 Further information regarding the SPSS program can be found at www.spss.comFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### measure types, using pivot tables, to obtain information that helped inform the base and remaining values for specific efficiency measures needed for the models.

It is important to note that sample sizes were designed at project outset to ensure statistical validity at the aggregate residential, commercial and industrial sector levels only. However, attempts were made to mine the data, where possible, to support determination of base and remaining factors for specific measures at the building-type level as described in more detail

below.



### 7.1.1 Residential Survey Data Prior to the detailed evaluation of residential telephone survey data, responses were categorized as either single or multi-family hom es. In total, 269 single family responses and 135 multi-family responses were recorded. Of those 404 total responses, the data collection effort focused on the 253 single family and 127 multi-family homes that were classified as permanent residences as opposed to seasonal residences. Separate evaluation of the survey data was then performed for each type of home. Based on a total population of approximately 600,000 housing units in New Hampshire, the margin of error for proportional results obtained from the single family surveys (253 total) was 6.2% with 95% confidence. The margin of error for proportional results obtained from the multi-family surveys (127 total) was 8.7% with 95%

confidence.



### 7.1.2 Commercial and Industrial Survey Data Data from the 200 small commercial and industrial phone surveys and the 200 large commercial and industrial site visits were analyzed on several levels. The most basic level of evaluation was to separate the commercial properties data from the industrial properties data. The

breakdown of commercial versus industrial faciliti es for each survey is shown in Table 62 below.

Table 62. Number of Commercial and Industrial Facilities Surveyed



### Small C/I Phone Surveys Large C/I Site Surveys

Commercial 177 100

Industrial 23 100

Total 200 200

The small and large commercial properties were further categorized by model-defined building types, as shown below in Table 63



### .

Table 63. Small Commercial vs. Large Commercial Surveys by Building Type



### Model Building Type Small Commercial Phone Surveys Large Commercial Site Surveys

Warehouse 4 5

Retail 23 7 Grocery 13 7

Office 56 22 Lodging 6 14

Health 14 12

Restaurant 10 4

Education 5 16

Other - unclassified 46 13

Total 177 100Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### The GDS Team established a minimum sample size of 30 respondents as the threshold for collecting and reporting data at the building type-specific level for both small and large commercial buildings. This would ensure statistically valid results at a 15 percent margin of error and 90 percent confidence. As shown in the table above, based on this threshold, results from the small commercial phone surveys provi ded sufficient data to derive base and remaining

factors for measures within both office (56) and other (46) building types. For the remaining building types, measure specific data was collected and reported based on the aggregate responses within the small commercial sector. Similarly in the large commercial sector, due to the limited number of responses within specific building types, a majority of the measurespecific base and remaining factors derived from the site visits were based on aggregate responses across the entire large commercial building stock. In some instances where a substantial amount of site visit data was available for a specific measure, base and remaining factors were determined at the building type level. An example is facility lighting, where a substantial volume of information was recorded during the site visits. It was the opinion of GDS that the data illuminated trends in lighting characteristics among the building types and warranted inclusion in the energy efficiency potential assessment models.

Industrial properties were also categorized by building type. The large industrial properties were broken down into ten specific building types as listed in Table 64 below. The small 49 

### industrial properties, where data was collected through a total of 23 phone surveys, were viewed as a single group (i.e., results were aggregated across all building types since the combined number of respondents was less than the 30 building type threshold required to ensure statistical validity).

Table 64. Small Industrial vs. Large Industrial Surveys by Building Type



### Model Building Type Small

Industrial

Phone Surveys Large

Industrial

Site Surveys Electronic and Other Electrical Equipment

- 15

Fabricated Metals

- 23 I & C Machinery and Computer Equipment

- 1

Lumber and Wood Products

- 14 Other Assembly / Light Manufacturing

- 13 Other Medium/Heavy Equipment Manufacturing

- 6 Paper and Allied Products

- 2 Printing, Publishing and Allied Ind.

- 7

Rubber and Miscellaneous Plastics Production

- 9

Other – not classified

- 10

Total 23 100

As described elsewhere in this report, the industrial supply model requires single savings factors for specific end uses (e.g., lighting, process heating, etc.) and recognizes that these factors can vary depending on the type of industry being assessed. Therefore, the information mined from the large industrial property site visits wa s analyzed to identify New Hampshire-specific equipment, system and process practices and trends that could be used to support adjustment of the original model assumptions which had initially been based only on secondary data sources from previous studies and prior experience.

49 The 23 small industrial survey respondents consist of Seven (7) Industrial Metals Machining, Four (4) Industrial Parts Assembly, and Twelve (12) Industrial OtherFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### 7.1.3 Weighting of Small and Large Commercial Survey Data

In both the commercial electric and the comme rcial gas energy efficiency potential analysis models, small (less than 100 kW or 300,000 kWh annual consumption) and large (greater than 100 kW or 300,000 kWh annual consumption) commercial facilities have been treated as a single sector. Therefore, weighted averages were developed for the measure-specific base and remaining factors using results from both the small and large facilities data collection efforts.

The method used for calculating these weighted averages was based on 2007 total kWh consumption data provided by the utilities for their customers classified as small commercial/industrial and large commercial/industrial. In total, the small commercial customers consumed 2,100,349,654 cumulative kWh of energy in 2007 and the large commercial customers consumed a total of 2,643,763,935 kWh of energy. Based on these values, small commercial customers consumed 44.3 percent of commercial energy usage in 2007 and the large commercial customers consumed 55.7 percent. These ratios were used, where applicable, to derive weighted average commercial sector and building specific end-use measure saturation (base factor) and energy efficiency equipment penetration (remaining factor)

values for use in the commercial models.

In several instances, survey data was available only from the small commercial facilities phone surveys, or from the large commercial facilities site visits, or from neither depending on the specific measure. If penetration and saturation values obtained from survey data were available for either the small commercial or large commercial facilities, but not both, an un-weighted survey value was utilized in the model. If values obtained from the surveys were not available for a specific measure, the original assumptions (based on existing secondary data) were utilized in the models and all applicable references that formed the basis for such assumptions

were noted.

7.2 Application of Survey Data

As noted previously, a substantial amount of useful New Hampshire-specific information was collected on energy end use equipment saturations and energy efficiency measure penetrations for a number of residential, commercial, and industrial measures. In cases where such New Hampshire customer-specific information could not be collected from the phone surveys and site visits, the most prevalent barrier to obtaining that information tended to be the extremely specific nature of some measures and the time constraints existing for conducting the surveys and site visits. Wherever possible, when secondary sources were required to be used as the basis for base and remaining factors in the models, they were verified for reasonableness, or modified based on results obtained through the project’s primary data collection activities.

The greatest percentage of model values that relied on primary survey data occurred in the residential sector, where nearly 70 percent of the model’s required base and remaining factors for efficiency measures came directly from surv ey information. In the commercial electric model, 36 percent of the measures’ base and remain ing factors were also derived directly from this project’s primary data collection activities. In the commercial non-electric model, 24 percent of the measures were based on survey information. This large variation between the percentages of survey data applicable in the residential (70%) versus commercial sectors (24 to 36%) is in part attributable to the complexity and specificity of the commercial measures compared to the residential measures. A more detailed analysis of the survey data application is provided in the following sections.



### 7.2.1 Residential Sector The measure end-use categories that were most informed by the residential sector telephone surveys were appliances and water heating. Overall, customers appeared knowledgeable andFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### provided potentially useful information regardi ng the types of appliances they owned (i.e. refrigerators, ranges, water heaters, etc.) and whether the appliances were ENERGY STAR

rated. 50 

### The total number of responses used to derive base and remaining factors for use in the residential models in these end use categories was also very high since these end uses are quite common in across all residences.

The measure end use categories of lighting and space conditioning were also fairly well informed by the surveys. Information on standar d measures such as CFL bulbs, fixtures and programmable thermostats was readily available and was used to derive reliable base and remaining factors. Information on measures that were less well known to the general public, such as heat pumps, duct sealing, and photocell controlled outdoor lighting, proved to be less reliable (with little to no survey data respons es) and were therefore supplemented in the model by secondary data sources.

A complete list of the base and remaining factors derived through information collected in this project’s telephone surveys for each measure assessed within both single and multifamily homes is provided in Appendix K, along with links to specific survey questions and data

sources.

7.2.1.1 Residential Sector Example Programmable thermostats provide a good example as to how the base and remaining factors were derived from this project’s telephone surv eys. In the residential models, programmable thermostats are applied as energy efficiency measures within homes using electric heat, gas furnaces, gas boilers, and oil boilers. The measures are further categorized by systems for heating only and for systems with both heating and central air conditioning. In addition programmable thermostats are broken out by si ngle family homes and multifamily homes and recognize that the savings associated with use of programmable thermostats will differ based on all of these factors. In the following example, the derivation of base and remaining factors for programmable thermostats is described within the context of single family homes without central air conditioning that heat with oil boilers.

The first step in the analysis was to derive the end use saturation (base case factor) for each sub-category of the measure. The end use saturation is defined as the percentage of total single family homes that contain the end use or measure. For this example, the end use saturation is the percentage of single family hom es that have oil-fueled boiler heating (heating only, no central air conditioning) and was derived from survey questions SH2, SH3 and SC1. Question SC1 was used to determine whether homes had central air conditioning. As illustrated in the summary table below, a total of 214 respondents did not have central air conditioning.

Granite State

Electric NH Elec CoOp PSNH Unitil Total

Count 5 3 25 6 39

% within UTILITY 17.9% 6.5% 18.5% 13.6% 15.4%

Count 23 43 110 38 214

% within UTILITY 82.1% 93.5% 81.5% 86.4% 84.6%

Count 28 46 135 44 253

% within UTILITY 100.0% 100.0% 100.0% 100.0% 100.0% SC1: Do you have central air conditioning? * UTILITY Crosstabulation

UTILITY

SC1: Do you have central air conditioning? Yes

No

Total



### Of the 214 single family respondents who did not have air conditioning, a summary table was developed that combined the responses to questions SH2 and SH3. SH2 was used to identify

50 It is important to note however, that past studies have shown as many people incorrectly identify products as being ENERGY STAR as do those that do not think thei r products are ENERGY STAR when in fact they are.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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### the primary type of heating fuel utilized and Question SH3 was used to identify the primary types of heating systems. The responses to Qu estion SH2 (fuel type) were used as the crosstab headings for the Question SH3 summary table shown below. A total of 36 responses are missing because they reported wood or electricity as the primary fuel used for heating and were excluded from this question.

Natural gas purchased from Bottled gas or

propane: [CONFIRM:

DELIVERED BY

TRUCK?] Oil Kerosene Total

Count 12 12 48 1 73

% within SH2: What is the main fuel you use to heat this

home? 46.2% 42.9% 39.3% 50.0% 41.0%

Count 4 9 28 0 41

% within SH2: What is the main fuel you use to heat this

home? 15.4% 32.1% 23.0% .0% 23.0%

Count 3 2 34 0 39

% within SH2: What is the main fuel you use to heat this

home? 11.5% 7.1% 27.9% .0% 21.9%

Count 12306

% within SH2: What is the main fuel you use to heat this

home? 3.8% 7.1% 2.5% .0% 3.4%

Count 00404

% within SH2: What is the main fuel you use to heat this

home? .0% .0% 3.3% .0% 2.2%

Count 10113

% within SH2: What is the main fuel you use to heat this

home? 3.8% .0% .8% 50.0% 1.7%

Count 21104

% within SH2: What is the main fuel you use to heat this

home? 7.7% 3.6% .8% .0% 2.2%

Count 10304

% within SH2: What is the main fuel you use to heat this

home? 3.8% .0% 2.5% .0% 2.2%

Count 22004

% within SH2: What is the main fuel you use to heat this

home? 7.7% 7.1% .0% .0% 2.2%

Count 26 28 122 2 178

% within SH2: What is the main fuel you use to heat this

home? 100.0% 100.0% 100.0% 100.0% 100.0% Total SH3: What type of heating system is your main source of

heat?

Other (please specify)

DON'T KNOW Boiler + Radiator + Steam

Radiator + DK (i.e., other components unknown)

Could Identify Fuel, But Not Equipment

REFUSAL SH2: What is the main fuel you use to heat this home?

Furnace: central forced air furnace (aka forced hot air)

Boiler + Radiator + Hot Water (aka forced hot water)

Boiler + Baseboard + Hot Water (forced hot water)-OR

JUST BASEBOARD SH3: What type of heating system is your main source of heat? * SH2: What is the main fuel you use to heat this home? Crosstabu lation



### The end use saturation of homes with oil boilers, heating only, was calculated by summing the number of oil using respondents with boilers (28 + 34 + 3 + 4 = 69) and dividing it by the total number single family respondents (253). The total number of single family homes was used in the calculation because the end use saturation is defined as the percentage of all single family homes with oil boilers and no central air conditioning. The percentage of oil customers with boilers for heating only (i.e. end use saturation) was then 69/253 = 27.3%.

The next step was to derive the energy efficiency measure penetration for programmable thermostats. The penetration is defined as the fraction of the end use energy that is already energy efficient. For this example, the penetrati on is the percentage of homes that already have programmable thermostats and was derived from survey question SH14 which specifically asked whether the customers have a programmable thermostat. The cross tabulated responses, by primary fuel type (question SH2), are shown below for reference.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 122 natural gas electricity propane oil kerosene wood Total

Count 26 0 26 77 1 14 144

% within Main heating fuel 76.50% 0.00% 68.40% 51.00% 50.00% 35.00% 53.50%

Count 8 4 12 73 1 26 124

% within Main heating fuel 23.50% 100.00% 31.60% 48.30% 50.00% 65.00% 46.10%

Count 0001001

% within Main heating fuel 0.00% 0.00% 0.00% 0.70% 0.00% 0.00% 0.40%

Count 34 4 38 151 2 40 269

% within Main heating fuel 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% Main heating fuel

SH14: Do you have a programmable

thermostat? Yes

No

DON'T KNOW

Total



### As illustrated in the table above, 51.3% (77/150) of customers indicated that they have programmable thermostats after discounting the “Don’t Know” response. Thus, the penetration for this measure is 51.3%. The remaining factor, defined as the percentage of homes in which this measure can be installed, is 1 minus the penetration, or 48.7% for this example. The resulting end use saturations (base case factors) and remaining factors were used in the residential model to calculate the potential for savings from this efficiency measure. Refer to Section 4.1 above for the actual equations used in the model to calculate potential savings.



### 7.2.2 Commercial Sector Valuable information was gathered from both the te lephone surveys and site visits to help derive base and remaining factors use in the commercial sector electric and gas models. In the commercial electric model, 36% of the measure remaining factors were directly attributable to the survey data. In the commercial gas model, 24% of the measure remaining factors were directly attributable to the survey data. The measure end-use categories that were most informed by the surveys and site visits were lighting, refrigeration, appliances, compressed air, motors and water heating. The measure end-use categories that were least influenced by the primary data collection activities were space cooling (chillers), space cooling (unitary and split AC), and cooking.

In the Lighting end use category for example, the base case factors were developed by first identifying sub-categories such as fluorescent tube lighting, screw-in incandescent/CFL lighting, high-bay lighting, exit signs and other specialty lighting. Then, the total number of fixtures reported in each sub-category from the site visits was tabulated and the relative percentages of each sub-category were calculated. Fixture counts were utilized to formulate the base case factors due to incomplete data on the wattage and run hours for all fixtures. These relative percentages, based on total fixture counts, were applied as base case factors for each building type to reflect the percentage of energy attributable to each sub-category. The site visits thenprovide useful information regarding the penetration of energy efficient lighting within each subcategory so remaining factors could be developed for each measure.

Substantial data was also compiled for the co mmercial non-electric model. Measure end use categories that were the most well informed by the phone surveys and site visits included water heating, pools, HVAC controls, and cooking. Measure end use categories that were least informed by the surveys were ventilation, building envelope, and space heating.

A complete list of base and remaining factors used in the commercial models is provided in Appendix L to this report. Factors that have been informed by data collected through the telephone and site visits conducted through primary data collection elements of this project have been highlighted for ease of reference. The survey instruments for the phone and site surveys are provided in Appendices B and C, respectively. Appendix L includes a summary sheet that identifies the questions used to derive the factors.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 123 

### 7.2.2.1 Commercial Sector Example As with the residential sector, programmable thermostats provide a good example of how base and remaining factors were derived from survey data collected in the small commercial sector. To start, nearly all commercial customers were found to have thermostat-controlled heating systems as shown in the cross tabulation for Question 20 below. 90% of respondents indicated that they had control over the heating, while 10% did not have control, or did not know.

Warehouse Retail Grocery Office Lodging Health Education Industrial Restaurant Other Total

Count 2 22 12 50 6 14 4 19 8 43 180
% within Building

t yp e recoded2 50.0% 95.7% 92.3% 89.3% 100.0% 100.0% 80.0% 82.6% 80.0% 93.5% 90.0%

Count 2 1 1 6 0 0 1 3 2 3 19
% within Building

t yp e recoded2 50.0% 4.3% 7.7% 10.7% .0% .0% 20.0% 13.0% 20.0% 6.5% 9.5%

Count 0 0 0 0 0 0 0 1 001
% within Building

t yp e recoded2 .0% .0% .0% .0% .0% .0% .0% 4.3% .0% .0% .5%

Count 4 23 13 56 6 14 5 23 10 46 200
% within Building

t yp e recoded2 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% Q20: Do you have control over the temperature of the heating? * Building type_recoded2 Crosstabulation

Building type_recoded2

Q20: Do you have control over the temperature of the heating? Yes

No

DON'T KNOW

Total



### It was assumed that the percentage of respondents without control of the temperature of the heating is largely attributable to tenant or landlord circumstances, thus the base case factor for this end use was determined to be 100 percent. For the small commercial phone surveys, Question 21 specifically asked whether respondents had a programmable thermostat. The cross tabulated summary table is provided below for reference.

Warehouse Retail Grocery Office Lodging Health Education Industrial Restaurant Other Total

Count 1 11 6 31 3 7 3 8 5 20 95
% within Building

t yp e recoded2 50.0% 50.0% 50.0% 62.0% 50.0% 50.0% 75.0% 42.1% 62.5% 46.5% 52.8%

Count 1 10 6 18 3 6 1 11 3 21 80
% within Building

t yp e recoded2 50.0% 45.5% 50.0% 36.0% 50.0% 42.9% 25.0% 57.9% 37.5% 48.8% 44.4%

Count 0 1 0 1 0 1 0 0 025
% within Building

t yp e recoded2 .0% 4.5% .0% 2.0% .0% 7.1% .0% .0% .0% 4.7% 2.8%

Count 2 22 12 50 6 14 4 19 8 43 180
% within Building

t yp e recoded2 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% Q21: Do you have a programmable thermostat? * Building type_recoded2 Crosstabulation

Building type_recoded2

Q21: Do you have a programmable thermostat? Yes

No

DON'T KNOW

Total



### The energy efficient measure penetration, defined as the percentage that is already efficient, was calculated by dividing the total number of positive responses among non-industrial building types (95 total “yes” responses minus 8 “yes re sponses from the “industrial” building type = 87 commercial “yes” responses) by the total number of non-industrial respondents, excluding “don’t know” responses (156). The average penetration for this measure was thus determined to be 55.8%. The remaining factor was simply calculated as 1 minus the penetration, or 44.2% for this example.

As can be seen from the cross tabulation table above, more than 30 total responses were

received in both the Office and Other building type categories. Therefore, the remaining factors for programmable thermostats were derived at the building-specific level for each of these two building types. For example, the remaining factor for programmable thermostats in the Office building type was 36.7% and 51.2% for the Other building type category. For all remaining commercial building types, the 44.2% remaining factor (calculated in aggregate across all building types) was applied to maintain statistical validity in the data with reasonable confidence.

Programmable thermostats were not included in the survey for the large commercial surveys due to a larger prevalence of EMS systems as the primary means for temperature controls in these facilities and because larger facilities that use thermostatic control often have a largeFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 124 

### number of thermostats, or a mix of programmable and manual thermostats. This makes the quantification of programmable thermostats in larger commercial facilities very difficult. Since no large commercial data was available for programmable thermostats, the data from the small commercial surveys was applied without weighting. It is important to note that once the weightings were completed, the remaining factor for each measure was qualitatively assessed for reasonableness and adjusted if necessary. It was felt that applying the small commercial remaining factor overall was reasonable for this application based on industry experience.



### 7.2.3 Industrial Sector The industrial model varies from the residential and commercial models in that energy end-use areas are assessed from a top-down (end-use category) perspective vs. bottom-up (a measure specific assessment approach). Therefore, the base case, remaining and other factors that were considered independently (by measure) in the residential and commercial models, are combined into a single savings factor in the industrial model. Initial values for each industrial end-use category savings factor were based upon secondary data that was developed previously by the American Council fo r an Energy Efficient Economy (ACEEE) 51 

### and used in other GDS technical potential studies in the region. These factors were then adjusted, where appropriate, based upon the New Hampshire industrial sector-specific survey results. Adjustments to the savings factor based upon this project’s primary data collection efforts are

summarized in Table 65 and Table 66 below.

Table 65. Industrial Electric End-Uses Informed by Primary Data

Industry End Use Area A djustment

Electronic and Other Electrical Equipment Process Heating The savings factor was raised 10% to 30% total because this industry type had the largest number of process heat machines and lower MECS data percentage than other industry types with fewer machines (19%)

Electronic and Other Electrical Equipment Process Cooling and Refrigeration The savings factor was raised 5% to 10 % total because this industry type had the largest number of both commercial and non-commercial refrigeration units and a low relative MECS percentage (4%)

Electronic and Other Electrical Equipment Facility Lighting The savings factor was raised 9% due to th e disproportional ratio of T12 to T8 lighting in this industry type.

Fabricated Metals Process Cooling and Refrigeration The savings factor was increased 2% to 7% total because this industry type had the second highest total of both commercial and non-commercial refrigeration units and a low relative MECS percentage (3%)

Fabricated Metals Machine Drive The savings factor was increased 7% to 26% total because this industry type

had the 2 nd highest number of motors, and the most number of motors that run for 40 hours per week or more. The MECS percentage for this industry type (44%) was also at the low range for this measure category (36% - 82%)

Measuring, Analyzing, and

Controlling Instruments Facility Lighting The savings factor was increased 9% to 49% total due to a disproportionally high percentage of incandescent lighti ng fixtures in this industry type compared to other types

Paper and Allied Products Machine Drive The savings factor was decreased 9% to 17% total due to the low number of machine drive processes compared to other industry types. The MECS data for this industry type was also high ( 82%) compared to other industry types

Printing, Publishing and

Allied Industries Process Heating The savings factor was reduced 10% to 20% total. This industry type had a

50 th percentile number of process heating applications so the savings factor was adjusted to represent the 50 th percentile of factors for this end use area. The MECS data for this industry type was also the lowest of any industry type (2%)

Rubber and Miscellaneous

Plastics Products Machine Drive The savings factor was increased 6% to 23% total due to an average number of machine driven equipment, but a relatively high number of motors that run more than 40 hours per week. The MECS data for this industry type was also lower than average (52%) for this measure category

Rubber and Miscellaneous

Plastics Products Facility Lighting The savings factor was decreased 5% to 35% total due to a large percentage (97%) of fluorescent tube lighting alr eady being T8 fixtures. Fluorescent

51 Sources: Connecticut Efficiency Poten tial Analysis (GDS), EPRI Potentia l Study Webinar, Resource Assessment for Energy Trust of Oregon, California Industrial Energy Efficiency Potential (Ernest Orlando Lawrence, Berkeley National Laboratory), ACEEE Potential Studies (Vermont, Florida, Texas and Fan & Pump Analyses), Reading Industrial Tech Potential Analysis (GDS), Vermont Electric Energy Efficiency Potential Study (GDS).Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 125 lighting comprised over 60% of all lighting in this industry type

All Sensors and Controls The savings factors were increased uniformly 3% to 4% total to account for the low number of occupancy sensors currently in place, and the low number of reported energy management systems

Table 66. Industrial Non-Electric End-Uses Informed by Primary Data

Industry End Use Area A djustment

Electronic and Other Electrical Equipment Conventional Boiler

Use The savings factor was raised 4% to 20% total because this industry type reported the largest number of c onventional boilers and a low MECS percentage (12%) relative to other industry types

Electronic and Other Electrical Equipment Facility HVAC The savings factor was decreased 2% to 11% total due to a high reported incidence of outside air economizers and EMS systems in this industry type

Fabricated Metals Facility HVAC The savings factor was increased 4% to 17% total due to a lower than average number of outside air economizers, EMS systems, and heat recovery
systems

Lumber and Wood

Products Facility HVAC The savings factor was increased 7% to 20% total due to the lowest reported number of outside air economizers, EMS systems, and heat recovery systems. This industry type also had a lower than average MECS percentage (14%)

Petroleum Refining and

Related Industries Process Heating The savings factor was decreased 2% to 11% total due to the lowest number of reported gas-fired process heating app lications. This industry type also had a higher than average MECS percentage (60% in this measure category

Petroleum Refining and

Related Industries Facility HVAC The savings factor was increased 3% to 16% total due to a lower than average number of outside air economizers, EMS systems, and heat recovery systems. This industry type also had the lowest MECS percentage (2%) in this measure category



### The adjustments summarized above were made by compiling all relevant data for each end-use area by industry type and looking for trends in the data. As examples, industry types that were found to have disproportionate amounts of processes (i.e. process heating applications), or fixtures (i.e. T8 fluorescent tubes versus T12 fluorescent tubes) were adjusted to reflect the trends noted within that industry type. Trends no ted from the surveys were also reviewed with respect to the MECS data. The MECS data was used to determine energy distribution among various processes in each facility. Using the example above, the industry type Electronics and Other Electrical Equipment had the highest number of process heating machines but a lower MECS percentage for process heating than other industry types. In this example, the savings factor for this industry type was increased to reflec t the trend noted in the site surveys. In some instances, such as the end use area Sensors and Controls , a uniform adjustment was made to reflect what appeared to be increased potential for savings beyond the initial assumptions.

A complete list of savings factors for all end use categories and industry types is provided in Appendix M. In the electric model, 10 of 180 (5.5%) of the factors were adjusted based on survey results. In the non-electric model, 6 of 80 (7.5%) were adjusted. Specific factors that have been amended based on survey data are highlighted for reference.

7.3 Summary and Recommendations

The primary data collection effort for this project gathered an abundance of information relating to the saturation of electric and non-electric (natural gas, oil and propane) energy end uses and the penetration of energy efficiency measures across New Hampshire’s residential, commercial, and industrial sectors. These data were used, where applicable, to help derive base and remaining factors applied to the energy effi ciency potential assessment models employed for this specific study and will serve as a valuable starting reference for New Hampshire-specific energy end use saturations and efficient equipment penetrations going forward.

Beyond survey information used to derive critical model inputs, a wealth of additional customer and energy usage data was obtained through the telephone surveys and site visits conducted as part of this project. Considerable information regarding customer attitudes towards energyFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 126 

### efficiency concepts and programs was acquired, as well as the main motivations and barriers considered by customers with respect to their participation in efficiency programs. Other data such as the distribution of heating fuel usage, facility information, and process information was

also collected and will be a valuable resource for future studies.

A number of lessons have been learned through this initial primary data collection effort which might help to increase the effectiveness and value of subsequent efforts. Following is a brief listing of the top three recommendations:

1. Begin with the end in mind – Documenting and communicating a clear vision of the required results from the data collection effort and how those results will be used is a vital first step to ensuring success. This is especially important given the large number of project sponsors, consultant team data collection/evaluation staff, and other parties interested and involved in the process and outcomes from a project of this magnitude. For this current project, written work scopes were developed, discussed, refined and shared with all project participants.

2. Set realistic expectations – It is important to set realistic expectations regarding the amount of measure-specific information that can be collected through a phone survey or site visit. Prioritizing measures and consolidating multiple measures within common end-use categories, up front, will help to maximize survey instrument effectiveness. For this project, multiple discussions and drafts of survey and site visit instruments were developed for this purpose. Results from this report identify measures within each sector that have the greatest potential for savings. Going forward, review of the base and remaining factors associated with these measures will identify clear areas where refined New Hampshire-specific information would be most valuable.

3. Allot sufficient time for data collection and analysis – When large amounts of data are being collected, it is critical that sufficient time be made available, not only for the data collection phase of the project, but more importantly for data analysis. Time to enter, verify, clean and analyze data results is needed to ensure that the most value is mined out of the efforts expended. For this project, as discussed throughout this section of the report, substantial information from this primary data collection effort was used to help inform development of base and remaining factors and to identify customer behaviors and barriers. Going forward, additional review of the data collected through this project could yield further insights and value to the project sponsors.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

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# Section 8: Past Program Capture and Recommendations

This section summarizes results from evaluation of the penetration of energy efficiency savings (electric and natural gas) associated with past and current utility-sponsored program activities. A review of the utilities’ annual Core New Hampshire Program Highlights reports formed the basis for this evaluation, along with estimated savings for prior years not posted on the New Hampshire Public Utilities Commission website 52 

### . Results are presented from both a cumulative savings as a percent of sales perspective, and on a number of customers served as a percent of population basis. Recommendations for potential modifications to program and measure offerings that could increase the likelihood of achieving identified potentials are made and have been developed mainly through information on barriers collected directly from New Hampshire utility customers (through this project’s telephone surveys and site visits) and supplemented by the GDS Team’s experience with looking at programs from a logic-modeling perspective, and extensive knowledge of other local, regional and national programs and best practices. 53



### Energy efficiency programs offered in New Hampshire include both electric and gas efficiency measures and serve all customer sectors; residential (including low income), commercial and industrial. The electric efficiency programs are comprised of CORE programs offered jointly by the four electric utility providers, and addition al efficiency programs offered by the individual utilities. The gas efficiency programs are offered through the individual utility providers.

The CORE programs were formally launched in June 2002, although efficiency programs have been offered by the utilities for quite some time prior. As shown in Table 67, since the formal inception of the CORE programs in June 2002, an estimated total of 557,274 MWh (annual)

have been saved. 54 

### This savings value is based on the estimated annual savings for each year since 2002 added together. In other words, this savings value is calculated by adding the annual savings from the 2003 programs to the annual savings from the 2004 programs to the annual savings from the 2005 programs and so on. This value does not consider the fact that the annual savings from the programs are actually realized every year over the lifetime of the measures. The total annual savings were calcul ated in this manner to provide a useful comparison to the forecast sales in 2008.

This total savings represents five percent of the total forecasted electric usage for New Hampshire in 2008. Nearly four percent of this savings has been achieved within the commercial industrial sector, with slightly more than one percent of the savings coming from the

residential sector.

52 http://www.puc.state.nh.us/Electric/coreenergyefficiencyprograms.htm

53 Assessments based on a logic-modeling perspective recognize current program resources (dollars, staffing, etc.) and activities (measure installations, promotional rebates/in centives, marketing/outreach, education/training, etc.) and seek to identify their causal links to anticipated outputs (measures installed, in-program energy and capacity savings, # of customers served, market actors trained, etc.), short-, intermediate- and long-term outcomes (changes
in awareness and behavior, market-wide/sustainable ener gy, economic and environmental benefits, etc.). In addition, logic models recognize the existence and potential impacts of external influences (price of energy, state of the local and regional economy, federal tax incentiv es, other non-program sponsored activities, etc.).

54 Estimate is based on reported lifetime savings from 2005-2008 available on NHPUC website, GDS estimates for program measure lives, and extrapolated kWh savings estimates for 2002-2004Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 128 Table 67. Energy Efficiency Prog ram Savings as Percent of 2008 Sale s: 2002-2008 – Electric Utilities

Sector Total Annual Savings Since 2002 (MWh) Forecasted Sales

2008 (MWh) Cummulative

A nnual Savings as a

Percent of 2008

Sector Sales Cummulative Annual Savings as

a Percent of 2008

Total Sales

Residential 120,064 4,537,480 2.6% 1.1% Commercial/Industrial 437,210 6,650,732 6.6% 3.9%
Total 557,274 11,188,212 5.0%



### It is important to note that the above figure is conservative in several ways. First, the utility providers have been actively offering efficiency programs since well before 2002 so the total amount of energy saved since the inception of efficiency programs is much higher. Second, this figure considers only a single year of annual savings. In reality, annual savings are realized every year over the assumed measure life of the programs. The data was reported in the above manner to provide an appropriate comparison to the forecast 2008 usage.

New Hampshire’s natural gas utilities offered energy efficiency programs from 1993 through 1999, at which time the programs were suspended in light of gas industry restructuring and investigation of the electric industry’s development of energy efficiency programs. The natural gas utilities began offering the energy efficiency programs again on January 1, 2003, and since that time have saved an estimated total of nearly 250,000 decatherms (annual). 55 

### This value was again calculated by adding the estimated annual savings for each year since 2003. This value does not consider the cumulative savings over the life of the measures installed in the programs each year (i.e. only one annual year of savings from 2003 programs). As shown in Table 68, this savings represents 1.1 percent of the total forecasted therm sales for New Hampshire in 2008.

Table 68. Energy Efficiency Progra m Savings as Percent of 2008 Sales: 2003-2008 – Natu ral Gas Utilities

Sector Total Annual Savings Since 2003 (decatherms) Forecasted Sales

2008 (decatherms) C ummu l a ti ve

A nnual Savings as a

Percent of 2008

Sector Sales C ummu l a ti ve Annual Savings as

a Percent of 2008

Total Sales

Residential 95,387 8,435,900 1.1% 0.4%
Commercial/Industrial 150,248 14,267,000 1.1% 0.7%
Total 245,635 22,702,900 1.1%



### Overall since 2003, a substantial amount of energy has been saved in both the residential and commercial/industrial sectors. The values presented above are also conservative as they do not reflect the efficiency efforts of the utility providers prior to 2003, nor do they consider the cumulative annual savings of the programs sinc e 2003. The following sections discuss the programs in more detail, including customer participation, benefit cost ratios, and expansion potential.



## 8.1 Electric Utility Energy Efficiency Programs

The electric utility energy efficiency programs assessed in this section include the CORE programs and other utility-specific programs being offered by National Grid, the New Hampshire Electric Cooperative, Public Service Company of New Hampshire, and Unitil Energy Systems. Any programs being offered by New Hampshire’s municipal electric utilities or through conservation and educational programs that do not have reportable energy savings have not been included in this summary. Table 69 pres ents a listing of the programs and sponsoring

55 Estimate based on reported savings from 2003-2007 and GDS estimates for program measure livesFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 129 

### utilities included in this past and current electric utility energy efficiency program savings capture assessment. More detailed information on these programs can be found on the NHPUC

website at http://www.puc.state.nh.us/Electric/ coreenergyefficiencyprograms.htm

.

Table 69. New Hampshire Electric Ut ility Core and Addi tional Programs

Program Name Utility Sponsor

ENERGY STAR Home Program CORE Program – NH Electric Providers

Home Energy Solutions CORE Program – NH Electric Providers

Home Energy Assistance Program CORE Program – NH Electric Providers

ENERGY STAR Lighting Program CORE Program – NH Electric Providers

ENERGY STAR Appliance Program CORE Program – NH Electric Providers

Small Business Energy Solutions CORE Program – NH Electric Providers

Large Business Energy Solutions CORE Program – NH Electric Providers

New Equipment and Construction CORE Program – NH Electric Providers

NHEC High Efficiency Heat Pump Program New Hampshire Electric Cooperative (NHEC)

PSNH ENERGY STAR Homes - geothermal Public Service Company of New Hampshire (PSNH)

PSNH C&I RFP Pilot Program Public Service Company of New Hampshire (PSNH)



### 8.1.1 Program Participation

The number of customers participating in the CORE programs has remained relatively constant since 2005. Some programs, such as the Ho me Energy Solutions and the Home Energy Assistance programs have decreased slightly in parti cipation since 2005. Participation in these programs is somewhat limited under current program design, as they serve limited markets (i.e., homes with electric heat and low income homes, res pectively). Homes with electric heat as the main fuel source represent approximately 4 percent of all residences in the state. 56 

### Low-income homes represent approximately 5.5 percent of all residences in New Hampshire. Since 2005, the total customer participation in the Home Energy Solutions and Home Energy Assistance programs is summarized in Table 70 below:

Table 70. Customer Served Through Utility HES and HEA Programs: 2005-2008

Customers Served (2005-2008) Total Population Saturation

Home Energy Solutions 5,087 20,849 24.3%

Home Energy Assistance Program 4,143 28,668 14.5%



### Given that the CORE programs have been in effect since June 2002, the actual saturation of these two markets is likely greater than the tota ls shown above. It is important to note however, that there are over 16,000 households on the waiting list for the Home Energy Assistance programs that serves low-income households 57 

### – therefore, there remains substantial demand for this program for the foreseeable future.,

56 Figure based on residential phone survey data for both single family and multi-family

57 Based on recent testimony by PSNH in CORE docket hearings (DE 08-120). Also, the low-income subgroup of the CORE docket produced an estimat e that there are about 87,000 low-in come households in New Hampshire, almost one-fifth of the total housing stick, that still need energy efficiency services (L ow Income Report entered as Appendix B to the CORE Settlement Agreement filed on December 11, 2008 in DE 08-120.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 130 

### Participation in the ENERGY STAR lightin g and appliance programs has remained mostly steady since 2005, with spikes in participation in the lighting program in 2007 and the highest participation rate for the appliance program in 2006. These two programs have consistently maintained a good return of lifetime kWh saved per unit of cost. Since these programs target individual appliances and fixtures, and not individual homes per se, it is difficult to assess the extent to which the available market for these programs has diminished since the inception of the programs.

Participation in the ENERGY STAR Homes program has remained relatively stable since 2006 likely due to an overall downturn in the real estate market. In 2007, 524 builders (i.e. 524 homes) participated in New Hampshire’s ENERGY STAR Homes programs out of a total of 3,772 single-family residential building permits 58 

### . This represents a saturation of 13.9 percent of ENERGY STAR homes among the residential new construction market in 2007.

Since 2005, a total of 3,110 small businesses have participated in the Small Business Energy Solutions program and a total of 1,008 large businesses have participated in the Large C&I Retrofit Program. These participation rates cannot be directly correlated to program saturation rates because many of the large businesses may have participated more than once. It is clear from this data, however, that the saturation of the large business programs has been much greater than in the small business programs.

In 2007, 194 builders or clients participated in the New Equipment and Construction program representing 24.6 percent of commercial/industrial building permits.

With respect to the three utility specific programs reviewed 59 

### , total number of participants and total expenditures are far less than the CORE programs.



### 8.1.2 Program Awareness

Customer attitudes towards energy efficiency practices and programs were obtained from sector-specific site visits and phone surveys and were summarized in detail in Section 3.3 of this report. It seems relevant to this discussion to reiterate the findings relative to customer awareness of existing energy efficiency programs o ffered by the utilities. From the site and phone surveys, the percentages of customers who reported being aware of the programs offered are summarized in Table 71. As shown in this table New Hampshire’s large commercial and industrial customers reported being most aware utility efficiency programs (over 85%). Residential customers were the least aware, at le ss than 50 percent. Nearly 60 percent of small commercial/industrial customers were aware of the utilities’ programs.

Table 71. Percent of Customers Aw are of Utility Effi ciency Programs

% Aware of Efficiency

Programs Offered

Residential 49.4%

Small Commercial/Industrial 59.6%

Large Commercial/Industrial 85.9%



### Although less than half of the 400 residential customers surveyed were aware that their utility providers offered energy efficiency programs, over 90 percent of all residential survey

58 http://www.bos.frb.org/

59 NHEC’s High Efficiency Heat Pump Program, PSNH’s Energy Star Homes Geothermal Program, and PSNH’s C&I RFP Pilot ProgramFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 131 

### respondents indicated that they would incorporate energy efficient features in future renovations. This data indicates the potential for much greater participation in the residential marketplace with increased awareness. Similar opportunities exist with small commercial/industrial customers, although these customers are often the most hard to reach and to encourage to take action.



### 8.1.3 Efficiency Measures Not Included in Current Programs This New Hampshire Additional Energy Efficienc y Opportunities Potential Assessment study identified an abundance of energy efficiency measures that were cost effective and represent potential energy savings for New Hampshire in the next 10 years. Many of the most cost effective measures such as lighting, programmable thermostats and ENERGY STAR appliances are already included in the current energy effi ciency programs sponsored by the electric and natural gas utilities. The efficiency measures discussed in Table 72 below are not included in the current programs and may represent opportunities for program expansion upon further review. It is important to note that the table bel ow is by no means comprehensive, it is intended to be illustrative of areas with potential for expansion.

Table 72. Residential Measures Not Included in Current Programs

Efficiency Measure Measure End

Use Comments

Programmable

thermostat Space heating and cooling For homes with Oil or Propane heati ng. Programmable thermostats are included in the Home Energy Solu tions (HES) program for homes with electric heat and offered by the gas utilities for homes with gas heat. The Home Energy Assistance (HEA) offers them for low income customers

Energy Efficient

Windows Space heating and cooling For homes with Oil or Propane heating. The HEA low income program offers windows replacement for all fuels when cost-effective. The gas utilities offer a rebate for high efficiency window replacement for customers with gas heat.

Duct Sealing Space heating and cooling For homes with Oil or Propane heating. Duct sealing is included in the Home Energy Solutions program for homes with electric heat and the Weatherization program for homes with gas heat. High efficiency heat

pumps Space heating and cooling This measure is included in NHEC’s sp ecific program but not in the CORE programs for existing residential homes

Ground source heat

pumps Space heating and cooling This measure is included in NHEC’s sp ecific program but not in the CORE programs for existing residential home s. PSNH offers this measure for

residential new construction

Low flow shower

heads/faucets Water heating For homes with Oil or Propane heating. Low flow shower heads and

faucets are included in the Home E nergy Solutions program for homes with electric heating (and also in the gas utility efficiency programs)

Water Heating

measures Water heating For homes with Oil or Propane heating. Low flow shower heads and

faucets are included in the Home E nergy Solutions program for homes with electric heating, HES for all fuels and in the gas Weatherization program. Water heater wraps are offered for older water heaters in the HES program.

New water heater (efficient, tank less, heat pump) Water heating For all homes. Incentives are offered by the gas utilities

ENERGY STAR Refrigerator Appliances For all homes, not currently included in ENERGY STAR Appliances program. Available in HEA & HES pr ograms if qualificat ion criterion are

met.

ENERGY STAR

Freezer Appliances For all homes, not currently included in ENERGY STAR Appliances program. Available in HEA & HES pr ograms if qualificat ion criterion are

met.

ENERGY STAR

Dehumidifier Appliances For all homes, not currently included in ENERGY STAR Appliances program. Available in HEA if qualific ation criterion are met but none have

been done.

ENERGY STAR

Dishwasher Appliances For all homes, not currently included in ENERGY STAR Appliances program. Available in HEA if qualific ation criterion are met but none have

been done.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 132 

### Many of the efficiency measures identified above ar e efficiency measures that are cost effective and to date have been included only in programs serving homes with electric or natural gas heating. Homes with electric heat comprise approximately 4 percent of all residences based on the survey data whereas homes with natural ga s, propane or oil heat comprise approximately 84 percent of homes. The appliances noted consume a significant amount of electricity and are not currently included in the ENERGY STAR appliances program for existing residences. Table 73 provides similar information regarding measures not currently included in the utilities’ commercial/industrial programs.

Table 73. Commercial/Industrial Measures Not Included in Current Programs

Efficiency Measure Measure End

Use Comments

Dishwasher, clothes washers, refrigeration, etc. Appliances Energy efficient appliances represents a potential for small and large businesses to conserve energy with small incremental costs, but is currently included only in the Small Business Energy Solutions Program

Ground source heat

pumps Space heating and cooling Ground source heat pumps represent both a significant initial cost as well as a significant payback in terms of energy savings

General water heating measures Water heating Water heating measures such as low flow faucets and shower heads, efficient water heaters, water heater blankets, and similar water heating measures are only included in the Small Business Energy Solutions Program but represent a potential for energy savings in other facilities using electric hot water heating



## 8.2 Gas Efficiency Programs

Gas efficiency programs are offered independently in New Hampshire by the two gas utilities, National Grid and Northern Utilities. The gas efficiency programs were offered from 1993 through 1999, at which time the programs were suspended in light of gas industry restructuring and investigation of the electric industry’s development of energy efficiency programs. The natural gas utilities began offering the energy efficiency programs again on January 1, 2003. The programs offered since 2003 are the programs evaluated in this analysis, and include the following (Table 74).

Table 74. Gas Efficiency Programs Evaluated

Program Name Utility Sponsor

Residential custom measures Northern Utilities (Gas)

Residential Low Income custom measures Northern Utilities (Gas)

residential high efficiency heating equipment Northern Utilities (Gas)

High efficiency water heating Northern Utilities (Gas)

ENERGY STAR homes Northern Utilities (Gas)

ENERGY STAR Programmable thermo stats Northern Utilities (Gas)

ENERGY STAR Windows Northern Utilities (Gas)

Weatherization Northern Utilities (Gas)

Multifamily custom measures Northern Utilities (Gas)

Small commercial and Industrial Custom Measures Northern Utilities (Gas)

Med and large C/I custom measures Northern Utilities (Gas)

Commercial high efficiency heating program Northern Utilities (Gas)

Infrared heating program Northern Utilities (Gas)

Commercial ENERGY STAR Thermo stats Northern Utilities (Gas)Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 133 Program Name Utility Sponsor

Low Income National Grid (Gas)

Residential High Efficiency heat ing National Grid (Gas)

ENERGY STAR Windows National Grid (Gas)

Residential Weatherizati on National Grid (Gas)

ENERGY STAR Thermostats National Grid (Gas)

Residential High Efficiency Water Heating National Grid (Gas)

ENERGY STAR Homes National Grid (Gas)

Commercial Energy Efficiency Program National Grid (Gas)

Economic Redevelopment National Grid (Gas)

Commercial High Efficiency H eating National Grid (Gas)

Multifamily Housing National Grid (Gas)



### Programs that do not have reportable therm savings such as the online audit and educational programs have been excluded from this list. A comp lete list of efficiency programs offered by the New Hampshire natural gas utilities may be found on the NHPUC website. 60



### 8.2.1 Program Participation Program summary sheets reviewed for the gas efficiency programs did not report the total number of actual participants for each program on a yearly basis. Based on the design goals for each program, the total number of participants has increased each year since 2003 with the largest increase in targeted users occurring between 2005 and 2006.

The design goal participation in several programs has increased steadily since 2003. Efficiency programs with notable increases in design goal participations since 2003 include the following:

• ENERGY STAR Homes

• ENERGY STAR Programmable Thermostats

• ENERGY STAR Windows

• Residential Weatherization

• Commercial High Efficiency Heating

GDS estimated the saturation of natural gas efficiency programs in the residential and commercial/industrial marketplace by calculating the cumulative number of design goal participants for each program since 2003 and comparing that number to the total number of potential users. The number of actual participants was not available from the documents posted to the NHPUC website. Potential users were determined by applying the percentage of natural gas users from the phone surveys, to the overa ll number of end use customers in each sector. For the purpose of estimating saturations, participation in programs offered by both utilities has been added together. The saturations presented in Table 75 below do not account for homes and facilities already equipped with the effici ency measure (i.e. homes already with programmable thermostats) and are intended only to reflect the percentage of the marketplace reached by the individual programs 61



### .

60 http://www.puc.state.nh.us/Gas-Steam/energyefficiencyprograms.htm

61 It is also important to note that many of the prog rams are time of replacement, so the saturations may be misleading because the total population is actually the number of customers in need of a heating system replacement and that number is constantly changing.Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 134 Table 75. Customer Served Through Natural Gas Utility Programs: 2005-2008



### Customers Served
(2005

‐ 2008) Total
Population 62 

### Saturation

Residential Conservation Services 2,245 45,279 5.0%

Residential Custom Measures 580 45,279 1.3%

Residential Low Income Custom

Measures 621 2,402 25.9%

Residential High Efficiency Heating
Equipment 2,912 45,279 6.4%

ENERGY STAR Homes 307 15,088 63 

### 2.0%

ENERGY STAR Programmable

Thermostats 2,054 45,279 4.5%

Multi

‐ Family Custom Measures 56 84,989 0.1%

C&I Custom Measures 375 33,481 1.1%

Commercial High Efficiency Heating

Program 437 34,400 1.3%

Infrared Heating Program 28 34,440 0.1%

Commercial ENERGY STAR Thermostats 220 34,440 0.6%

Commercial Food Service Program 18 3,851 0.5%

The summary table above indicates that the gas efficiency programs since 2003 have penetrated the residential market to a greater extent than the commercial and industrial market. It appears that there is substantial opportunity fo r further penetration in all customer sectors.



### 8.2.2 Program Awareness Customer awareness of utility sponsored efficiency programs is summarized in Sections 3.3 and 8.1.2 of this report. Of importance to this di scussion of gas efficiency programs is the finding

that less than half of residential customers are aw are that programs are offered by their utility providers. More than 40 percent of small comm ercial and industrial customers are not aware of the programs offered by the utility provider s. Increasing customer awareness will be an important barrier to overcome.



### 8.2.3 Efficiency Measures Not Included in Current Programs A significant majority of the efficiency measures identified in the technical potential study have already been incorporated in the programs offered by the natural gas utilities. Several

measures that are cost effective and are not currently included in the efficiency programs offered by the utility providers are summarized in Table 76 below. It is important to note that the current program designs do not permit the utility providers to pay for programs for oil/propane measures because the programs are funded by electric and gas ratepayers.

62 Total population estimates are based on the total numbe r of available properties by program type, times the percentage of facilities reporting the usage of natural gas from the site and phone surveys

63 Estimate is number of 2007 single family building permits (3,772) times four yearsFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 135 Table 76. Measures Not Included in Cu rrent Natural Gas Efficiency Programs

Efficiency Measure Measure End

Use Comments

ENERGY STAR

Dishwashers Appliances / Water heating In homes with natural gas water heating

ENERGY STAR

Clothes Washers Appliances / Water heating In homes with natural gas water heating

Boiler Tune up Water Heating In homes with natural gas supplied boilers

High efficiency cooking equipment Cooking High efficiency cooking equipment r epresents a potential for substantial savings. Northern Utilities and Natio nal Grid currently offer rebates for high-efficiency fryers and steamers.



### Both of New Hampshire’s natural gas utilities offer basic or prescriptive rebates for incorporating general energy efficiency products such as space heating equipment and water heaters. For small and large commercial and industrial customers, both utilities offer energy audit services and the potential for custom energy efficiency programs tailored to the specific facility. The audit and custom approach to efficiency programs in the commercial and industrial sector incorporate the potential for a wealth of energy efficiency measures to be incorporated at a specific facility.



## 8.3 Summary and Recommendations

To date, the efficiency programs offered in New Hampshire by the state’s four largest electric utilities and two natural gas distribution companies have been successful and have saved a substantial amount of energy. Many of the programs have and are continuing to perform quite well in terms of cost per unit of energy saved and customer participation. Several other programs have shown positive trends becoming more cost effective on a yearly basis.

For all programs, but most notably in the electric market, the cost per kWh saved in the commercial and industrial sectors has been better than in the residential market. This might explain why in general, commercial and industrial customers have indicated a higher awareness of the utilities’ efficiency programs available to them as well as an increased likelihood of participation compared to residential customers. Given the scale of energy consumption in the commercial and industrial sectors, these customers continue to represent a substantial area for potential energy savings in the upcoming years. Additional penetration can be achieved through increased outreach to small commercial/industrial customers and by expanding current program offerings to include other cost effe ctive measures not currently included in the companies’ CORE and utility-specific programs.

Residential customer participation in the state’s electric and natural gas energy efficiency programs has met or exceeded program expectations on a yearly basis. However, in the phone surveys more than half of respondents indicated that they were not aware of the programs offered by their utilities, or that they were ev en eligible. Of the customers who were aware of the programs, a high percentage participated and indicated they would participate in the future. This data underscores the importance of increasing consumer education on the programs

available to residential customers and of the associated benefits.

One final finding from the study is that nearly a ll of the most cost effective energy efficiency measures are included in current programs in some manner. In several programs, however, the cost effective measures are targeted to a sma ll percentage of consumers. The best example of

this is the Home Energy Solutions program which targets consumers with 65 percent or greater electric heating. Customers with primarily electric heat represent approximately 4 percent of the total population based on the phone surveys. Customers with 65 % or more electric heat likelyFinal Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 136 

### represent a larger percentage of the total population but are nonetheless a small percentage of all customers. Adding more comprehensiv e programs and expanding the depth, breadth and promotion of the current programs to include a larger number of potential participants may lead to increased overall energy savings. It is im portant to recognize that such expansion would require providing services to customers that heat with fuels other than electric or natural gas. Issues regarding who would pay for the provision of services to such customers would need to

be addressed.Appendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix AAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix BAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix CAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix DAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix EAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix FAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix GAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix HAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix IAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix JAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix KAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix LAppendices: Final Report: Additional Opportunities for Energy Efficiency in New Hampshire January, 2009

GDS Associates, Inc. 

# Appendix M