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Via Courier and E-mailMarch 2, 2009Mary L. Cottrell, SecretaryDepartment of Public UtilitiesOne South Station, 2 nd FloorBoston, Massachusetts 02110RE:National Grid Gas 2009 Energy Efficiency PlanD.P.U. 08-109Dear Ms. Cottrell:Enclosed please find National Grid’s responses to the following Information Requests:DPU 2-10, 2-18, 2-19, 2-21, 2-23, 2-25, 2-26, 2-28, 2-29, 2-32, 2-34, 2-36 and 2-41. Also,enclosed are Attachments 1-13(q) Revised and 1-14 Revised.Thank you very much for your time and attention to this matter.Very truly yours,Patricia CroweEnclosurescc:Benjamin Spruill, DPU Hearing OfficerJamie Tosches, Assistant Attorney GeneralSteven I. Venezia, DOERElliott Jacobson, Action, Inc.201 Jones Road, Waltham, MA 02451T: 781-907-1848 F: 781-907-1659 patricia.crowe@us.ngrid.com

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-10Request:Response:Provide the formula that calculates the future value of today’s dollar value.There is no formula in the benefit cost model that calculates the futurevalue of today’s dollar value. The avoided costs that are entered into themodel already account for this. However, the formula can be found in MSExcel as FV (rate, nper, pmt, pv, type) where Rate is the interest rate, Nperis the total number of payment periods, Pmt is the payment made eachperiod, PV is the present value and Type indicates when the payments aredue.Prepared by or under the supervision of: Carol S. White

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-18Request:Response:Refer to Exhibit C (3rd Revision) at 1. Explain why supportingdocumentation is unavailable for the assumption that Indirect WaterHeaters have a $300 incremental cost.Please refer to the document provided as Attachment DPU 1-13(g).Appendix A of this document shows that the source for the incrementalcost is GasNetworks 2003 Incremental Cost Study of Major Water HeaterManufacturers Wholesale Trade-Prices. Neither GDS nor the othersponsors of GasNetworks have been able to provide us with a copy of thisstudy.Prepared by or under the supervision of: Carol S. White

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-19Request:Response:Refer to Exhibit C (3rd Revision) at 1. Explain why supportingdocumentation is unavailable for the assumption that Indirect WaterHeaters provide an annual savings of 7.9 MMBtus.Please refer to the document provided as Attachment DPU 1-13(g).Appendix A of this document shows that the source for the therm savingsis “a RemRATE model run analysis prepared by Bruce Bennett of GDS.See MS Word documentation prepared by GDS, dated 2-13-2004”. TheCompany requested a copy of this document from GDS. However, GDSwas not able to provide the requested document.Prepared by or under the supervision of: Carol S. White

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-21Request:Refer to Attachment 1-13(d).(a)Provide documentation supporting the Incremental Cost to BaseCase that is provided in this attachment.(b) Describe scenarios 1, 2, 3, and 4.Response: (a) The documentation supporting the Incremental Cost to Base Casethat is provided in the referenced attachment is not availableaccording to our consultant, GDS. However, the Company wasable to find information on tankless water heaters from theENERGY STAR® Residential Water Heaters: Final CriteriaAnalysis (Attachment DPU 1-13(c)). National Grid will re-run theBenefit Cost Model and provide revised exhibits using this updatedreference which supports an average incremental cost of $1,120.(b)The different scenarios show how the benefit cost ratios differ bychanging the energy factors and incremental costs. Scenario 1 hasan energy factor of 0.80 and an incremental cost of $500 with aB/C ratio of 1.2. Scenario 2 has the same energy factor and anincremental cost of $600 with a B/C ratio of 0.93. Scenarios 3 and4 have energy factors of 0.82 and incremental costs of $500 and$600 and B/C ratios of 1.21 and 1.01, respectively. The Companywill re-run the Benefit Cost Model and will provide revisedexhibits with the therm savings used in ENERGY STAR®Residential Water Heaters: Final Criteria Analysis (AttachmentDPU 1-13(c)).Prepared by or under the supervision of: Carol S. White

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-23Request:Response:Refer to Exhibit C (3rd Revision) at 2, Attachment 1-13(m), andAttachment 1-13(l) at 24. Explain why the Company used an incrementalcost calculation based on all New England homes instead of anincremental cost calculation for Massachusetts homes.The incremental cost per square foot is a value developed for theMassachusetts New Homes with ENERGY STAR ® Program. Please referto Attachment 1-13(l) for the incremental cost per square foot. Theaverage square feet per home was from the Energy InformationAdministration (EIA) 2005 Housing Characteristics Tables. The averagesquare feet per home was based on all New England Homes. The EIA2005 Housing Characteristics Tables do not provide data at the state level.The Company was able to obtain the average square feet per home forhomes that participated in the National Grid 2007 ENERGY STARHomes program from our implementation contractor, ICF International.The revised incremental cost per home is shown in Attachment DPU 1-13(m) Revised submitted to the Department on February 27, 2009. Thechanges will be incorporated into the Benefit Cost Model and the revisedexhibits.Prepared by or under the supervision of: Carol S. White

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-25Request:Refer to Exhibit C (3rd Revision) at 3, and Attachment 1-13(q). Pleaseexplain why the Company assumes an incremental cost of $500 and anannual MMBtu savings of 7.9 for Boiler Reset Controls, when on page 2of Attachment 1-13(q) ACEEE list the incremental cost as $350, and theannual MMBTu savings as 9.6.Response: Please refer to the Attachment 1-13(q) Revised. This September 2006ACEEE report shows an annual MMBtu savings of 7.9 for Boiler ResetControls on page 2.The Company’s benefit/cost analysis used cost information provided byGDS. Since that analysis was completed, the Company conducted ananalysis of the actual cost for a boiler reset control. The programimplementer, Energy Federation, Inc. (EFI) provided cost information tothe Company that documents an average cost of $758 for this measure.The Company will update the Benefit/Cost Model and exhibits using thisupdated information.Prepared by or under the supervision of: Robert O’Brien

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-26Request:Response:Refer to Exhibit C (3rd Revision) at 2. Provide documentation supportingthe Company’s assertion that the average rebate for the Insulation and AirSealing measure in 2008 through August was $428.This information was requested from the program implementer, EnergyFederation, Inc. (EFI). Below is the information that EFI provided.YEAR Utility AVG REBATE$---- ------- ----------------2007 BGC 421.852007 CGC 356.482007 CGL 386.662007 EGC 375.38----------------Average 2007 413.942008 BGC 434.602008 CGC 383.492008 CGL 377.882008 EGC 430.73----------------Average 2008 427.55Prepared by or under the supervision of: Carol S. White

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-28Request: Refer to the Company’s response to Information Request DPU 1-4.Explain why many of the 2008 preliminary costs were incomplete. Whenwill the costs be available?Response:The Company assumes that the reference should be to InformationRequest DPU 1-14, since Information Request DPU 1-4 does notreference preliminary program costs for 2008. At the time the response toInformation Request DPU 1-14 was prepared, costs for all of 2008 werenot yet available. Those costs are now available and are provided here asAttachment DPU 1-14 Revised.Prepared by or under the supervision of: Carol S. White

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-29Request:Response:Refer to the Company’s response to Information Request DPU 1-1(a).Provide the supporting documentation used to construct the measure life of 15to 20-years.The source for the measure life of 15 to 20 years is from the measuresinstalled in the 2008 Multifamily Program and the expected lifetime ofeach measure as shown below.MeasureLifetimeThermostat 10CHP System 15Rezonen/aBoiler Reset 2 Stage 10Indirect Hot Water Heater 119 Gal 12R-30 Roof Insulation 25Floor Insulation 25Wall Insulation 25Condensing DHW 12Outdoor Reset Controls 10Windows 25Solar Thermal 20Roof Insulation 25Since the measures installed in this program vary each year, with a range ofbetween 10 and 25 years in 2008, the Company used its judgment to select anestimate of a 15 to 20 year lifetime for the 2009 program.Prepared by or under the supervision of: Carol S. White andChristina L. Halfpenny

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-32Request:Response:Refer to the Company’s response to Information Request DPU 1-2(a).Provide the supporting documentation used to construct the measure life of 15to 20-years.The source for the measure life of 15 to 20 years is from the measuresinstalled in the 2008 Commercial Energy Efficiency Program and theexpected lifetime of each measure as shown below.Advanced Combustion Controls 10Air Sealing 15Air To Air Heat Recovery 10Boiler Combustion Controls 10Boiler Control For Process Boilers 10Boiler Optimization 10Boiler Reset 1 Stage 10Boiler Reset 2 Stage 10Boiler Reset Multi Stage 10Boilers 20CHP System 15C02 Based Demand Ventilation 10Custom HVAC Building Control System 10Custom-Boiler Combustion Control 10EMS Demand Control Ventilation 10EMS Shut Off Continuous Equipment 10EMS: Boiler, Water Temp Control 10EMS: Improved Schedule Control 10Energy Management System 10Enhanced Controls For Selected Hvac 10Floor Insulation 25Flow-E-Con Fabric Air Diffuser 10Fryer 10Heat Recovery 15Heat Recovery CHP System 15Insulation 25Ozone Laundry Systems 10Pipe Insulation 25R-19 Roof Insulation 25R-30 Roof Insulation 25Roof Insulation 25Solar Thermal 20Steam To Water Heat Exchanger 10Steam Trap SurveyN/ASteam Traps 1Thermal Pool Covers 5

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Thermostat 10Wall Insulation 25Water Heater - Indirect 20Window 25Since the measures installed in this program vary each year, with a range ofbetween 10 and 25 years in 2008, the Company used its judgment to select anestimate of a 15 to 20 year lifetime for the 2009 program.Prepared by or under the supervision of: Christina Halfpenny

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-34Request:Response:Refer to the Company’s response to Information Request DPU 1-3(b) andDPU 1-3(d). List the measure values used to estimate projects costs.The Economic Redevelopment Program contains the same measuresincluded in the Company's CEEP Program, both prescriptive and custommeasures. A list of these measures is included in the Company’s responseto Information Request DPU 2-32. The program differs from the otherC&I Gas Programs in that every measure, including prescriptive measures,is modeled for gas savings. Since measure rebates are based on modeled,interactive savings, measure values vary for each project. Project rebates,based on the cumulative of the interactive measure savings, are designedto cover up to 50% of the total project cost, with a limit of $100,000.Prepared by or under the supervision of: Christina Halfpenny

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-36Request: Refer to the Company’s response to Information Request to DPU 1-5.Explain the performance of the Commercial High Efficiency Heatingprogram. Has the Company made any adjustments to program goals basedon the program’s performance?Response:The Company has revised its savings estimates per equipment type in2009. The following table shows the therm savings per equipment typeused in 2008 and the therm savings expected in 2009. The Company alsoincreased participant goals for 2009.Product Rating 2008 ThermSavingsFurnaces (up to 150 MBtuh)2009 ThermSavings> 90% AFUE or greater(>92%AFUE in 2009) 185 211Furnace ( 92% AFUE 185 196Condensing unit heaters (151 to 400 > 90% Thermal EfficiencyMBtuh)557 410Direct fired heaters / direct firedmakeup air (up to 1500 MBtuh) 1000Direct fired heaters / direct firedmakeup air (1501 to 3000 MBtuh) 1000Direct fired heaters / direct firedmakeup air (over 3000 MBtuh) 1000Infrared heaters (all sizes) low intensity 500 408Steam Boilers (up to 300 MBtuh) > 82% AFUE 141 365Hydronic Boilers (under 175MBtuh)Hydronic Boilers (176 to 300MBtuh) (under 300 Mbhtu in 2009)Hydronic Boilers (301 to 499MBtuh)Hydronic Boilers (500 to 999MBtuh)Hydronic Boilers (1000 to 1700MBtuh)Hydronic Boilers (1701 MBtuh andlarger)Condensing Boilers (under 175Mbtuh)Condensing Boilers (176 to 300Mbtuh) (under 300 Mbhtu in 2009)Condensing Boilers (301 to 499Mbtuh)Condensing Boilers (500 to 999Mbtuh)Condensing Boilers (1000 to 1700Mbtuh)> 85% AFUE> 85% AFUE> 85% Thermal Efficiency> 85% Thermal Efficiency> 85% Thermal Efficiency> 85% Thermal Efficiency> 88% AFUE141141 168500 3532000 6623000 11914000 1500800> 88% AFUE( >90% AFUE in 2009) 800 323> 90% Thermal Efficiency> 90% Thermal Efficiency> 90% Thermal Efficiency1500 7833000 14674000 2641

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Product Rating 2008 Therm 2009 ThermSavings SavingsCondensing Boilers (1701 Mbtuhand larger)>> 90% Thermal Efficiency6000 3326Indirect fired water heaters (up to 50gallon storage) 79 79Indirect fired water heaters (over 50gallon storage) 250 79On-Demand Tankless Water Heaterswith and Energy Factor of 0.82 orhigher and electronic ignition 74 74As shown in the above table, the Company’s updated savings that will beapplicable beginning in 2009 are lower for many measures when compared to the savingsassumptions applicable in 2008. The actual performance of the program is not expectedto change.Prepared by or under the supervision of: Christina Halfpenny

National GridD.P.U. 08-109National Grid’s Responses to the Department’s Second Set of Information RequestsMarch 2, 2009Information Request DPU 2-41Request:Response:Refer to the Impact Evaluation of the 2007 Appliance ManagementProgram and Low Income Weatherization Program Report at 33, Table 20.Does the Company plan to revise its assumptions to include the updatedper participant savings of 142 therms/year for Massachusetts LIWmeasures?The Company has revised its assumptions to include the updated perparticipant savings of 142 therms/year at this time. The Company alsoadded non energy benefits specific to low income customers. Thesebenefits were originally developed by Jerrold Oppenheim for theCompany’s electric low-income program. The table below providesinformation on each non energy low-income benefit the Company isclaiming for its gas Low Income Weatherization Program.The revised Benefit Cost Model and exhibits will incorporate these changes.Annual LowIncome MonetarySavings perparticipantAnnual LowIncome MonetarySavings ($/home)One Time PropertyValue Increase($/home)One TimeArrearageReduction$15$203$345$32Difference between R4 and R3 rates is $0.1075/therm; When aparticipant's usage is reduced, the discount provided to theparticipant is also reduced. The benefit to the utility is the value ofthe participant's annual therm savings (142 therms) multiplied bythe per therm discount of $0.1075.(3.25+150+50). This represents sum of fire hazard reductionbenefit$3.25/year) and illness reduction benefit ($150/year) andmoving avoidance due to avoided service termination ($50/year).These numbers come from Jerry Oppenheim based on variousstudies.Based on the theory that energy efficiency investments inweatherization improve the property value of low-incomeparticipant homes. Value is calculated as annual weatherizationtherm savings per home times avg. cost per therm times $20.70increase in property value per $ of annual savings. The $20.70property value increase per $ of annual energy savings is a reportresult supplied by J. Oppenheim. Avg 2008 Low Income Rate$0.1175/therm * 142 therms * $20.70 = $345A review of studies of arrearage reduction benefits shows energyefficiency programs generate reductions in arrearages ranging from$0 to $469 per participating household. We use a conservativevalue of $32 per weatherized low income household which is froman Oak Ridge National Laboratory study.Prepared by or under the supervision of: Carol S. White

ACEEE Emerging Technologies Report:Advanced Boiler ControlsDescriptionVersion: September 2006Opportunity PriorityHigh2020 Savings Potential (Source) 238 TbtuLikelihood of Success 4Definition:Boiler controls, both integrated and stand-alone systems, that estimate changes in heat demand under part-load conditions and contmaximum boiler water temperature, firing time, and/or circulating pump cycling and speed in response. We treat two cases: Optionsnew boiler, and retrofit of sound existing boiler with advanced controls.Background and Description:Conventional non-condensing boilers fire at a single fuel-burning rate. They turn on when the thermostatcalls for heat, and turn off when the heat call is satisfied or when over-ride controls (high temperaturelimit, etc) cut the cycle short. Typically, the high temperature limit is set at about 180ºF. This isdesigned to be hot enough to meet heating demand on the coldest day of the year. For most daysduring the heating season, maintaining this water temperature results in relatively high off-cycle heatlosses. Several available control strategies are able to judge the current load on the system and lowerthe water temperature setpoint and/or delay burner firing accordingly. Depending on the system, theyestimate load from indoor and outdoor temperatures, supply and return water temperatures, and/or therates of change of these parameters,The most common approach is the outdoor reset control. This uses outdoor temperature as a proxy forheat demand: when outdoor conditions are relatively warm, it changes the supply water temperaturesetpoint to an appropriate cooler supply temperature. All gas boilers can be controlled to a minimumtemperature with light loads down to 140ºF, the point at which significant condensation can begin. Mostgas boilers are "cold start," and will alow short operating periods below that temperature. Condensingboilers can be controlled to arbitrarily low temperatures. "Keep-warm" boilers, primarily oil-fired, must bemaintained above the condesning temperature (ASHRAE Std 103, Table 7) Otherwise, boiler corrosionrates may accelerate, and condensate may leak from the system.Other strategies for harvesting residual heat include controls that "purge" the residual heat at the end ofa firing cycle, and controls that delay burner firing until all residual heat from the previous cycle isharvested. Two-stage thermostats and time-delay relays are examples of the latter, using warm watercirculation to meet an initial call for heat before firing the burner. The Beckett "Heat Manager" also usesdelayed burner firing, but uses a more complicated estimate of heat load that measures the drop-off rateof supply water temperature after the burner shuts down.Market InformationMarket Sector(s) Application(s) End Use(s) Fuel type(s)Residential New Construction Space Heating GasRetrofitOilMarket Segment(s) National/Regional Region(s)RegionalMidwestNortheast2006 © The American Council for an Energy-Efficiency Economy Page 1of 18

Current Status Promotional Activity Major Manufacturer(s)Commercialized Advertising BuderusHoneywellCommercialization Date:Intellidyne1980 (approximate)TacoProduct Life:Tekmar15 years VeissmannWeil McLainCurrent Status of MeasureSome of today’s high efficiency condensing boilers include temperature reset and load monitoringcontrols as standard features. These features are important for lowering water temperature enough torealize the full condensing function of these boilers. Several manufacturers (Weil McLain, Veissmann,Buderus, Lochinvar, Munchkin, to name some of the the larger) have introduced these systems on theU.S. market within the last 10 years. Other condensing boilers on the U.S. market provide outdoor resetas an option. The condensing boiler market share is not known but is fairly small (probably less than 5%of sales).Controls can also be purchased separately and added to an existing conventional system. Honeywell,Tekmar and several boiler manufacturers produce a wide range of controls of varying levels ofsophistication and features. Altogether, these controls are present on no more than 1-2% of the existingboiler stock.Energy Study and Savings InformationBasecaseDefinition:NotesResidential gas-fired non-condensing boiler (heat-only) with standard safety and operating controls (alarms for higtemperature limit, low water cut-off, high pressure cut-off, etc.) Standby/idle loss typically 2% - 3% of input energy.Efficiency 79 % 81% AFUE (median GAMA shipments; Kendall, 2002)multiplied by 0.97 estimated field performance factorElectricity Use0 kWh/yrSummer Peak Demand0 kWWinter Peak Demand0 kWGas/Fuel Use86.7 MMBtu/yrNew MeasureDefinition:Gas-fired boiler equipped with a control system, either direct or indirect, that reduces idle losses to ~0.3%Efficiency 86.4 % 81% AFUE but lower lossesElectricity UseSummer Peak DemandWinter Peak DemandGas/Fuel Use0 kWh/yr0 kW0 kW78.8 MMBtu/yrEnergy Savings and CostsElectricity SavingsSummer Peak Demand SavingWinter Peak Demand SavingsGas/Fuel SavingsPercent SavingsFeasible ApplicationsIndustrial Savings Potential >25%?Projected Incremental CostOther Costs (Savings)2020 Savings Potential (GWh)0 kWh/yr Electricity use of boilers is poorly understoodand thus left out of this analysis.0 kW0 kW7.9 MMBtu/yr9 %70 % 30% of existing systems deemed too old toretrofit. Feasibility is 100% on new systems.No295 2006$ "Pre-purge" system (example) includinginstallation cost0 $/year0 GWh2006 © The American Council for an Energy-Efficiency Economy Page 2of 18

2020 Savings Potential (Tbtu) 238 Tbtu When installed on new (47 Tbtu) and feasibleexisting (191 Tbtu) systems.Cost of Saved Energy ($/kWh)0 $/kWhCost of Saved Energy ($/MMBt 4.64 $/MMBtu Lower CSE if installed on new systems($2.88/MMBtu) based on a longer lifeexpectancy and lower labor cost.Summary of Savings Potential and Cost-EffectivenessThe savings potential of boiler controls is a measure of how effectively they cut out idle losses,regardless of system oversizing issues. For conventional boilers, adequate add-on controls may costfrom $150 (time-delay relay) to over $1000 (reset with automatic post purge) and save up to 12% ormore of the fuel used. In most cases, the costs and fuel savings depend heaviily on the existing systemand plumbing. The most advanced and cost-effective add-on controls that can claim 10% savings formost existing systems are roughly $300 including installation cost. In contrast, a new condensing boilerequipped with sophisticated controls will incur a similar incremental cost of $500-$1000, but will save20% of fuel use compared to standard gas boilers based on reduction of idle losses to between 0.15 and0.3%.Market BarriersLikelihood of Success Rating (1 - 5; 5 is high): 4RationaleFeasibility is high and valuable non-energy benefits exist. Market barriers are surmountable, but overcoming them will take extensiveeffort.Non-Energy Benefits/DrawbacksBetter controls mean cleaner boiler operations and longer lifeMajor Market BarriersContractor/Building TrainingPublic AwarenessDiscussion of Market BarriersResidential boiler controls that modulate supply water temperature have been available on the marketfor at least 30 years but have remained uncommon due to high up-front costs and a lack of aggressivepromotional activity and marketing. With higher fuel costs manufacturers are increasingly showcasingtheir most efficient systems, most of which are condensing models with controls that come as standardor optional features. For existing boilers however, stand-alone controls have not been actively marketedto consumers. Public acceptance is likely hindered by the lack of a one-size-fits-all solution. Dependingon the size, age, and type of boiler, plumbing configuration and burner sophistication, the cost ofpurchasing and installing the components that are necessary to achieve significant energy savings canvary dramatically and be expensive. Intellidyne’s Intellicon HW (also “Beckett Heat Manager”) hassucceeded in marketing a product that is relatively inexpensive to purchase and install and guaranteedto work with virtually any existing boiler.Next StepsPriority Level: HighRecommended Next StepsMarketingReview European ExperienceTestingUtility Promotions/ IncentivesSummary of Next StepsCondensing boilers that are integrated with more advanced load measurement and response controlsare now mainstream in the U.K. and Germany due to strict residential codes and standards. Theseproducts are increasingly popular in the U.S. But for the non-condensing boilers that dominate the U.S.market, consumers could be given greater access to information that help them understand whatcontrols would be appropriate and cost-effective for their existing systems. New field demonstrations2006 © The American Council for an Energy-Efficiency Economy Page 3of 18

and documentation of the clear fuel savings that modern controls provide would strengthen the case forsuch incentive programs. Utility promotions would be an appropriate channel for wider adoption by bothconsumers and manufacturers.AssumptionsData Quality Assessment (A - D; A is best): BKey Assumptions used in AnalysisEfficiency levels were obtained from estimated field measurements based on a base AFUE of 81%(median from GAMA shipment data; Kendall, 2002). A field performance factor of 0.97 is an ACEEEestimate based on field experience. We chose an estimated price based on manufacturer data for themost cost-effective solution found during our research.Numerical Assumptions:Heat Rate10420Btu/kWhDiscount Rate 4.53 %*New Residential Construction by 2020 (units) 14.8 %New Commercial Construction by 2020 (s.f.) 19.6 %Avg. Price of Electricity, 2020 (Residential)0.083$/kWhAvg. Price of Electricity, 2020 (Commercial)0.075$/kWhAvg. Price of Natural Gas, 2020 (Residential)10.16$/MbtuAvg. Price of Natural Gas, 2020 (Commercial)8.37 $/MbtuSource: EIA, 2006: 2006 Annual Energy Outlook unless noted. *Nadel, 2004.Methodologyhttp://aceee.org/emertech.html.References[ASHRAE] American Society of Heating, Refrigerating and Air-Conditioning Engineers. 1993. Method ofTesting for Annual Fuel Utilization Efficiency of Residential Central Furnaces and Boilers.ANSI/ASHRAE 103-1993. Atlanta, Ga.: American Society of Heating, Refrigerating and Air-ConditioningEngineers.Buchler, D. (NiSource). 2006. Personal communication. May 10.Butcher, T (Brookhaven National Laboratory). 2006. Personal communication. May 16.Card, M. (Radiant Heat Products). 2006. Personal communication. May 15.[DOE] U.S. Department of Energy. 2004. Technical Support Document: Energy Efficiency Program forConsumer Products: Energy Conservation Standards for Residential Furnaces and Boilers. Prepared byLawrnece Berkeley National Laboratory and Navigant Consulting. Washington, D.C.: U.S. Departmentof Energy.[EIA] Energy Information Administration. 2006. Annual Energy Outlook. Washington, D.C.: U.S.Department of Energy.Exquisite Heat. 2001. http://www.exqheat.com/index.html. Pleasantville, NY: Exquisite Heat.Kendall, Mark. 2002. Gas Appliance Manufacturers Association letter to C. Nasseri, U.S. Department ofEnergy. April 10.Landry, R.W., Maddox, D.E., and Bohac, D.L. 1993. "Seasonal Efficiency and Off-cycle Flue LossMeasurements of Two Boilers." In ASHRAE Transactions:Symposia DE-93-1-2: 440-454. Atlanda, Ga.:American Society of Heating, Refrigeration and Air-Conditioning Engineers.2006 © The American Council for an Energy-Efficiency Economy Page 4of 18

Nadel, Steven. 2004. Supplementary Information on Energy Efficiency for the National Commission onEnergy Policy. Washington, DC.: The American Council for an Energy-Efficient Economy.Tarulli, D. (Intellidyne). 2006. Personal communication. May 11.Webster, T. and Benenson, P. 1998. Technology Assessment Report: Duty Cyclers Revisited. LBNL­41754. Washington, D.C.: U.S. Department of Energy Federal Energy Management Progam.2006 © The American Council for an Energy-Efficiency Economy Page 5of 18

Revised Attachment DPU 1-14Page 1 of 92008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVE Participation Participation Participation Participation Participation Participation ParticipationResidentialAdvanced Controls/ES Thermostats 3,218 1,908 4,768 6,709 3,107 2,827 2,534Energy Star Homes 542 425 465 477 408 587 329Replacement Windows/ES Windows 20,157 16,946 32,252 42,255 2,262 2,304 1,954High Efficiency Heating 7,268 4,175 5,763 6,914 7,844 8,940 8,446High Efficiency Water Heating 2,269 1,148 1,382 1,155 715 1,366 1,770Energy Analysis: Internet Audit 7,531 5,713 5,277 6,222 5,900 8,175 6,195Insulation and Air Sealing/Weatherization 1,373 858 1,177 1,268 1,061 877 590Building Practices and Demonstrations 18 12 5 3 N/A N/A N/ATotal Residential 42,376 31,185 51,089 65,003 21,297 25,076 21,8182008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVE Participation Participation Participation Participation Participation Participation ParticipationLow-IncomeLow Income 805 626 1,004 1,017 1,051 996 1,103Total Low-Income 805 626 1,004 1,017 1,051 996 1,1032008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVE Participation Participation Participation Participation Participation Participation ParticipationCommercial & IndustrialMultifamily 118 55 189 153 121 112 1,065Commercial Energy Efficiency 827 256 513 563 591 520 451Tech Demo 5 1 5 8 8 4 10Commercial High Efficiency Heating 606 249 837 608 993 531 509Economic Redevelopment 43 4 20 19 20 21 17Builder Operator Cert 0 0 9 13 30 0 43Energy Analysis: Internet Audit 312 598 1,017 597 1,253 N/A N/ATrade Ally Training 0 0 0 850 617 1,225 1,505Total C&I 1,911 1,163 2,590 2,811 3,633 2,413 3,600COMPANY TOTALS 45,092 32,974 54,683 68,831 25,981 28,485 26,521

Revised Attachment DPU 1-14Page 3 of 92008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03Program Planning Program Planning Program Planning Program Planning Program Planning Program Planning Program PlanningPROGRAM/INITIATIVE & AdministrationExpenditures& AdministrationExpenditures& AdministrationExpenditures& AdministrationExpenditures& AdministrationExpenditures& AdministrationExpenditures& AdministrationExpendituresResidentialAdvanced Controls/ES Thermostats 23,864 12,651 27,732 57,125 34,917 23,071 30,919Energy Star Homes 43,773 50,461 42,428 53,632 73,486 27,422 45,077Replacement Windows/ES Windows 42,455 44,461 65,785 120,595 130,109 79,079 64,703High Efficiency Heating 515,705 393,718 334,312 453,351 517,118 411,410 449,415High Efficiency Water Heating 99,372 106,735 102,722 76,751 35,389 27,929 37,968Energy Analysis: Internet Audit 24,365 24,858 26,818 34,952 52,307 21,182 45,978Insulation and Air Sealing/Weatherization 138,488 71,788 99,401 122,532 137,789 55,689 40,593Building Practices and Demonstrations 7,843 3,112 5,767 0 0 0 0Total Residential 895,865 707,783 704,965 918,938 981,115 645,782 714,6532008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresLow-IncomeLow Income 3,972 68,631 121,156 112,010 117,684 150,002 147,273Total Low-Income 3,972 68,631 121,156 112,010 117,684 150,002 147,2732008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresProgram Planning& AdministrationExpendituresCommercial & IndustrialMultifamily 57,129 40,331 59,829 73,484 51,695 6,091 59,128Commercial Energy Efficiency 257,044 143,287 303,148 289,856 359,970 488,039 272,931Tech Demo 18,803 5,001 27,746 40,971 36,580 9,926 18,989Commercial High Efficiency Heating 87,724 62,476 163,899 129,934 128,372 58,184 76,138Economic Redevelopment 84,697 34,708 137,116 140,050 175,601 83,719 67,514Builder Operator Cert 0 0 1,165 2,379 1,546 654 4,171Energy Analysis: Internet Audit 30,964 11,186 25,629 32,044 5,480 0 0Trade Ally Training 0 N/A N/A 34,033 21,040 779 8,382Total C&I 536,361 296,988 718,532 742,751 780,284 647,392 507,253COMPANY TOTALS 1,436,198 1,073,403 1,544,653 1,773,699 1,879,083 1,443,176 1,369,179

Revised Attachment DPU 1-14Page 4 of 92008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresResidentialAdvanced Controls/ES Thermostats 0 0 7,984 N/A N/A N/A N/AEnergy Star Homes 0 0 12,215 N/A N/A N/A N/AReplacement Windows/ES Windows 0 0 18,940 N/A N/A N/A N/AHigh Efficiency Heating 0 0 96,250 N/A N/A N/A N/AHigh Efficiency Water Heating 0 0 29,574 N/A N/A N/A N/AEnergy Analysis: Internet Audit 0 0 7,721 N/A N/A N/A N/AInsulation and Air Sealing/Weatherization 0 0 28,618 N/A N/A N/A N/ABuilding Practices and Demonstrations 0 0 1,660 N/A N/A N/A N/ATotal Residential 0 0 202,962 N/A N/A N/A N/A2008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresLow-IncomeLow Income 0 0 0 N/A N/A N/A N/ATotal Low-Income 0 0 0 N/A N/A N/A N/A2008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresGas Networks/CollaborativeExpendituresCommercial & IndustrialMultifamily 0 0 907 N/A N/A N/A N/ACommercial Energy Efficiency 0 0 4,392 N/A N/A N/A N/ATech Demo 0 0 420 N/A N/A N/A N/ACommercial High Efficiency Heating 0 0 2,484 N/A N/A N/A N/AEconomic Redevelopment 0 0 2,073 N/A N/A N/A N/ABuilder Operator Cert 0 0 18 N/A N/A N/A N/AEnergy Analysis: Internet Audit 0 0 388 N/A N/A N/A N/ATrade Ally Training 0 0 N/A N/A N/A N/ATotal C&I 0 0 10,682 N/A N/A N/A N/ACOMPANY TOTALS 0 0 213,644 N/A N/A N/A N/A

Revised Attachment DPU 1-14Page 5 of 92008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresResidentialAdvanced Controls/ES Thermostats 57,380 6,983 20,891 36,047 62,849 N/A N/AEnergy Star Homes 12,663 -140 11,763 10,348 0 N/A N/AReplacement Windows/ES Windows 72,973 19,207 30,913 46,945 16,655 N/A N/AHigh Efficiency Heating 356,770 169,176 150,127 77,504 16,811 N/A N/AHigh Efficiency Water Heating 111,896 47,464 42,066 44,747 45,658 N/A N/AEnergy Analysis: Internet Audit 66,862 25,962 61,475 71,492 90,602 N/A N/AInsulation and Air Sealing/Weatherization 125,519 14,120 51,966 63,222 15,233 N/A N/ABuilding Practices and Demonstrations 2,723 593 1,520 0 N/A N/A N/ATotal Residential 806,786 283,365 370,721 350,305 247,808 N/A N/A2008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresLow-IncomeLow Income 99,177 18,205 $ 40,281 $ 44,2830 N/A N/ATotal Low-Income 99,177 18,205 40,281 44,283 0 N/A N/A2008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresProgramMarketingExpendituresCommercial & IndustrialMultifamily 35,503 8,967 $ 1,105 $ 13,609 $ 110N/A N/ACommercial Energy Efficiency 159,702 30,823 $ 4,224 $ 52,834 $ 3,260N/A N/ATech Demo 16,901 893 $ 510 $ 8,063 $ 69N/A N/ACommercial High Efficiency Heating 64,804 31,226 $ 4,338 $ 26,595 $ 10,107N/A N/AEconomic Redevelopment 50,306 13,793 $ 4,323 $ 24,282 $ 63N/A N/ABuilder Operator Cert 0 0 $ - $ 2360 N/A N/AEnergy Analysis: Internet Audit 19,844 -5,255 $ 45,204 $ 45,4040 N/A N/ATrade Ally Training 0 0 N/A N/A N/A N/A N/ATotal C&I 347,062 80,448 59,704 171,023 13,609 0 0COMPANY TOTALS 1,253,025 382,018 470,706 565,611 261,417 N/A N/A

Revised Attachment DPU 1-14Page 6 of 92008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVECustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresResidentialAdvanced Controls/ES Thermostats 113,373 36,308 111,058 169,466 42,814 81,459 160,236Energy Star Homes 170,160 81,207 99,664 97,406 124,738 36,703 84,774Replacement Windows/ES Windows 231,200 138,570 297,969 398,695 347,857 391,458 335,875High Efficiency Heating 3,492,470 1,295,001 1,644,048 1,709,360 1,662,278 2,779,555 3,294,343High Efficiency Water Heating 637,735 351,150 498,737 260,400 65,150 147,100 198,698Energy Analysis: Internet Audit 141 16 0 0 0 0 7,028Insulation and Air Sealing/Weatherization 1,025,832 251,275 461,263 425,188 422,373 250,385 262,662Building Practices and Demonstrations 48,033 13,070 15,466 2,152 N/A N/A N/ATotal Residential 5,718,944 2,166,597 3,128,204 3,062,667 2,665,210 3,686,660 4,343,6162008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVECustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresLow-IncomeLow Income $ 2,125,080 1,527,599 2,182,554 2,464,705 2,284,616 1,850,223 2,120,858Total Low-Income 2,125,080 1,527,599 2,182,554 2,464,705 2,284,616 1,850,223 2,120,8582008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVECustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCustomerIncentivesExpendituresCommercial & IndustrialMultifamily 309,123 115,954 202,471 256,755 167,187 55,700 383,528Commercial Energy Efficiency 1,547,187 383,956 1,006,803 716,895 1,216,783 2,753,642 1,314,122Tech Demo 116,386 10,293 92,333 148,422 138,903 39,150 206,037Commercial High Efficiency Heating 545,956 121,466 637,060 518,610 500,951 386,349 515,347Economic Redevelopment 598,945 47,803 487,998 524,500 695,210 528,248 639,704Builder Operator Cert 0 0 0 0 0 6,282 24,200Energy Analysis: Internet Audit 0 0 0 0 0 N/A N/ATrade Ally Training 0 0 0 0 0 3,075 48,635Total C&I 3,117,597 679,472 2,426,665 2,165,182 2,719,034 3,772,446 3,131,573COMPANY TOTALS 10,961,621 4,373,668 7,737,423 7,692,554 7,668,860 9,309,329 9,596,047

Revised Attachment DPU 1-14Page 7 of 92008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresResidentialAdvanced Controls/ES Thermostats 21,715 5,190 14,635 37,336 17,582 59,286 61,491Energy Star Homes 167,470 106,335 110,630 119,919 130,921 166,241 202,387Replacement Windows/ES Windows 35,109 12,609 18,844 66,774 92,981 99,766 73,306High Efficiency Heating 302,246 44,666 -27,065 140,393 146,151 186,146 261,639High Efficiency Water Heating 51,828 10,427 2,166 21,130 17,111 38,218 59,788Energy Analysis: Internet Audit 145,424 70,768 80,279 78,393 130,494 129,923 170,185Insulation and Air Sealing/Weatherization 49,753 13,247 12,180 32,197 34,705 104,050 63,033Building Practices and Demonstrations 6,050 -5,782 37 0 0 0 0Total Residential 779,595 257,459 211,706 496,142 569,945 783,630 891,8292008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresLow-IncomeLow Income 817,620 456,972 657,001 719,338 776,234 666,333 853,090Total Low-Income 817,620 456,972 657,001 719,338 776,234 666,333 853,0902008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresProgramImplementationExpendituresCommercial & IndustrialMultifamily 98,336 22,132 43,814 44,618 48,680 2,017 108,788Commercial Energy Efficiency 343,639 98,149 174,035 181,047 241,798 301,581 111,841Tech Demo 10,003 7,049 21,882 21,813 13,967 3,763 1,830Commercial High Efficiency Heating 65,413 11,209 15,854 11,836 24,505 61,879 40,746Economic Redevelopment 31,393 63,771 72,532 17,015 38,875 4,063 7,500Builder Operator Cert 0 0 4,800 8,650 6,536 0 625Energy Analysis: Internet Audit 66,012 46,042 60,786 91,953 23,164 N/A N/ATrade Ally Training 0 0 0 88,934 2,905 1,255Total C&I 614,797 248,352 393,703 376,932 486,459 376,208 272,585COMPANY TOTALS 2,212,011 962,783 1,262,410 1,592,412 1,832,638 1,826,171 2,017,504

Revised Attachment DPU 1-14Page 8 of 92008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresResidentialAdvanced Controls/ES Thermostats 2,885 781 5,665 2,817 0 0 0Energy Star Homes 2,998 2,227 9,327 2,642 0 0 0Replacement Windows/ES Windows 5,132 2,745 13,437 5,945 0 0 0High Efficiency Heating 62,279 24,309 68,288 22,357 0 0 0High Efficiency Water Heating 12,013 6,590 20,982 3,785 0 0 0Energy Analysis: Internet Audit 1,676 1,093 5,478 1,724 0 0 0Insulation and Air Sealing/Weatherization 9,506 3,148 20,304 6,040 0 0 0Building Practices and Demonstrations 526 4,369 14,636 2,956 0 0 0Total Residential 97,015 45,263 158,117 48,266 0 0 02008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresLow-IncomeLow Income $ 37,86832,000 64,000 69,287 71,096 0 0Total Low-Income 37,868 32,000 64,000 69,287 71,096 0 02008 Preliminary May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVEEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresEvaluation &Market ResearchExpendituresCommercial & IndustrialMultifamily 3,560 1,661 656 3,624 138 0 0Commercial Energy Efficiency 20,964 5,815 3,297 23,214 0 0 0Tech Demo 4,597 206 298 2,020 0 0 0Commercial High Efficiency Heating 9,743 65,068 22,222 6,408 1,156 0 0Economic Redevelopment 5,448 1,419 2,142 7,618 0 0 0Builder Operator Cert 0 0 0 105 0 0 0Energy Analysis: Internet Audit 832 461 276 1,580 0 0 0Trade Ally Training 0 0 0 0 0 0Total C&I 45,143 74,629 28,891 44,569 1,294 0 0COMPANY TOTALS 180,026 151,892 251,008 162,122 72,390 0 0

Revised Attachment DPU 1-14Page 9 of 92008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVETrade Ally Trade Ally Trade Ally Trade Ally Trade Ally Trade Ally Trade AllyTraining Training Training Training Training Training TrainingResidentialAdvanced Controls/ES Thermostats 653 41 1,170 0 0 0 0Energy Star Homes 3,249 177 3,551 0 0 0 0Replacement Windows/ES Windows 4,286 143 3,248 0 0 0 0High Efficiency Heating 17,219 1,263 16,507 0 0 0 0High Efficiency Water Heating 2,719 342 5,163 0 0 0 0Energy Analysis: Internet Audit 70 87 1,268 0 0 0 0Insulation and Air Sealing/Weatherization 3,519 250 5,700 0 0 0 0Building Practices and Demonstrations 5,022 5 272 0 0 0 0Total Residential 36,737 2,307 36,879 0 0 0 02008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVETrade Ally Trade Ally Trade Ally Trade Ally Trade Ally Trade Ally Trade AllyTraining Training Training Training Training Training TrainingLow-IncomeLow Income 0 0 0 0 0 0 0Total Low-Income 0 0 0 0 0 0 02008 Preliminar May 07- Dec 07 May 06-April 07 May 05-April 06 May 04-April 05 May 03-April 04 May 02-April 03PROGRAM/INITIATIVETrade Ally Trade Ally Trade Ally Trade Ally Trade Ally Trade Ally Trade AllyTraining Training Training Training Training Training TrainingCommercial & IndustrialMultifamily 148 393 133 0 0 0 0Commercial Energy Efficiency -318 1,375 1,124 0 0 0 0Tech Demo 49 49 204 0 0 0 0Commercial High Efficiency Heating 4,494 559 1,201 0 0 0 0Economic Redevelopment 226 335 304 0 0 0 0Builder Operator Cert 0 0 0 0 0 0 0Energy Analysis: Internet Audit 34 109 57 0 0 0 0Trade Ally Training 0 0 0 0 0 0 0Total C&I 4,634 2,820 3,023 0 0 0 0COMPANY TOTALS 41,371 5,127 39,902 0 0 0 0

COMMONWEALTH OF MASSACHUSETTSDEPARTMENT OF PUBLIC UTILITIES________________________________)National Grid Gas Companies ) D.P.U. 08-109)________________________________ )CERTIFICATE OF SERVICEI hereby certify that I have this day served responses DPU 2-10, 2-18, 2-19, 2-21,2-23, 2-25, 2-26, 2-28, 2-29, 2-32, 2-34, 2-36, 2-41, Attachments 1-13(q) Revised andAttachment 1-14 revised of National Grid’s to the Department’s Second Set ofInformation Requests in the above referenced docket upon each party in this proceedingby e-mail and/or courierNATIONAL GRIDBy its attorney,Dated: March 2, 2009_____________________Patricia Crowe201 Jones Road 5 th FloorWaltham, MA 02451(781) 907-1848patricia.crowe@us.ngrid.com