Item 4b Staff Response-Memo Regarding Program Load Factors — original pdf

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1 MEMORANDUM TO: Low Income Consumer Advisory Task Force FROM: Liz Jambor, Customer Energy Solutions DATE: September 14, 2015 SUBJECT: Response to Task Force Question During the September 4th Low Income Consumer Advisory Task Force meeting, a question was asked regarding the load factors across all programs. This memo serves as the response. The discussion during the meeting centered on energy savings and load factor as measured by the rebate programs. While we capture the kW and kWh per program, the number of hours, specific to the energy and demand savings, is a bit more a challenge. Based on the method by which meter data is collected, there are very few programs from which we have a load factor or a load shape. Interval meters are needed to capture the fluctuations in use over the hours of the day, typically read in 15-minute increments. The vast majority of our residential meters are read daily as well as most of our commercial meters. Additionally, formulas that do use the interval meter data, thus producing a load factor and load shape, are based on the “average” customer and would not represent all customers across all energy efficiency programs. Savings for our residential energy efficiency programs were originally based on the DOE-2 model (Department of Energy) and have been modified with subsequent bill analysis. We focus on the kW savings by measure and by program as an indication of the savings generated by the energy efficiency measures. We report this as part of our monthly and annual reports of savings by program. Typically, the benefit of the savings over the expenditure is viewed in terms of the benefit/cost ratio of the Total Resource Cost test, the Utility test or the Participant test. Each test is deemed as a positive benefit to cost ratio if the result is 1.0 or greater. Table 1 below provides the results of the FY14 programs and the corresponding Benefit/Cost Ratio tests. As the table indicates, a majority of the residential programs exceed 1.0 across all three tests. Another way we measure the impact of the programs (in the absence of load factors) is assessing the dollars per kW, or the rebate plus 65% O&M dollars spent to gain a kW of savings. The residential programs range from $542/kW to $5,003/kW for FY14. The low income weatherization program had the highest rebate dollars spent per kW realized. Table 1 below shows the dollars per kW across the programs. 2 Table 1 ParticipantPartici-MWhMWIncentivesTotalSavingsTRC = UtilityLifeUtility $/kWProgram TypepantsRebatesO&M+Rebate$0.10/kwhTRCUtilityPartici-Net BenefitYearsLife CycleResidentialpantNPV¢/kWhEES- Appliance Efficiency ProgramCustomer5,4096,4682.41,645,441$ 1,918,752$ 644,152$ 1.3 3.2 2.8 1,486,656$ 152.83807$ EES- Home Performance ES - RebateCustomer1,6343,2272.92,794,942$ 3,133,013$ 321,377$ 1.4 2.1 1.9 1,866,381$ 159.261,065$ EES- Home Performance ES - Loan Customer4579030.8351,576$ 446,128$ 89,883$ 1.6 4.1 1.7 659,217$ 154.71542$ EES- Free WeatherizationCustomer3123870.41,830,136$ 1,873,171$ 38,559$ 0.4 0.4 1.3 (1,050,286)$ 1546.125,003$ EES- Clothes Washer RebateCustomer33100.01,100$ 1,290$ 946$ 1.3 3.4 3.6 902$ 101.77782$ EES- Refrigerator RecyclingRefrigerator2,5241,3840.4346,693$ 389,165$ 137,868$ 0.9 2.1 2.2 (78,667)$ 103.671,053$ GB- Residential RatingsResidence7299440.5$0.0272,302$ 93,961$ 2.7 5.2 9.0 891,053$ 232.06566$ GB- Residential Energy CodeResidence2,75411,3978.2$0.0185,424$ 1,134,947$ 7.9 123.1 9.8 19,945,777$ 230.1223$ Subtotal Residential 13,85224,71915.56,969,889$ 8,219,245$ 2,461,693$ CommercialEES- Commercial RebateCustomer54241,2988.02,469,569$ 3,387,829$ 4,112,719$ 2.4 5.9 6.0 11,747,829$ 101.07 424$ EES- Small BusinessCustomer53910,6923.42,989,386$ 3,383,388$ 1,064,816$ 1.3 2.1 2.8 1,798,597$ 104.14 987$ EES- Municipal Building01,6910.032,284$ 32,284$ 168,393$ 3.6 11.0 18.0 256,060$ 100.25 N.A.EES- MultifamilyApartment7,4036,8133.92,507,220$ 2,955,882$ 678,476$ 2.1 3.1 2.6 5,111,009$ 185.86 757$ EES/GB Commercial ProjectsCustomer14,5331.1GB- Multifamily RatingsApartment2,0674,7881.1$0.0276,984$ 476,767$ 2.2 3.3 2.6 5,326,960$ 185.46263$ GB- Multifamily Energy CodeApartment7,80310,5046.9$0.0185,424$ 1,046,053$ 8.4 102.1 9.4 16,670,421$ 200.1427$ GB- Commercial Ratings1000 SF13,7797,1532.9$0.0367,406$ 712,334$ 6.9 22.9 15.3 7,193,270$ 200.40128$ GB- Commercial Energy Code1001 SF14,69915,4044.6$0.0185,424$ 1,534,030$ 11.7 98.6 - 16,722,497$ 11.274897890.1440$ Subtotal Commercial18,355102,87631.87,998,459$ 10,774,622$ 9,793,589$ Demand Response (DR)DR- Power PartnerThermostat3,306394.7856,912$ 1,396,515$ 3,871$ 2.8 3.3 0.8 3,002,038$ 7>999297$ DR- Cycle SaverCycle Saver2,462150.4390,606$ 438,272$ 1,471$ 4.8 1.3 6.1 444,701$ 10147.34 1,057$ DR- Power Partner (Comm & Muni) Thermostat000.070,122$ 70,122$ -0.0 0.0 1.2 (67,311)$ 783.83 N.A.DR- Load CoopMeter3806.2187,233$ 904,478$ $02.7 2.1 90.9 1,219,278$ 2>999145$ DR- Engineering Support & TESProject408.3951,867$ $01.6 16.0 0.05,981,769$ 15>999115$ Subtotal DR5,8105419.61,504,873$ 3,761,255$ 5,342$ Total DSM Programs38,017127,64967.0 $16,473,221 $ 22,755,122 $12,260,624 1.9 4.3 2.4 45,450,216$ 7.003.15340$ Austin Energy DSM Performance Measures Summary- FY2014Benefit/Cost RatioFirst year of program: no financial break out