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Residential Appliance Measure Updates

Residential Appliance Measure Updates. June 29, 2010. Ryan Firestone and Wayne Leonard Navigant Consulting. Danielle Gidding Bonneville Power Administration. Purpose. Update residential appliance measures to 6 th Plan supply curves: Dishwashers Clothes washers, single family

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Residential Appliance Measure Updates

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  1. Residential Appliance Measure Updates June 29, 2010 Ryan Firestone and Wayne LeonardNavigant Consulting Danielle GiddingBonneville Power Administration

  2. Purpose • Update residential appliance measures to 6th Plan supply curves: • Dishwashers • Clothes washers, single family • Clothes washers, multi-family • Refrigerators • Freezers • June 29th RTF Meeting • Methodology for all appliances • Approval of updates to dishwashers and SF clothes washers • August 3rd RTF Meeting • Approval of updates for MF clothes washers , refrigerators, and freezers

  3. Methodology • Identify available measure datasets • Define baseline as average performance of dataset • sales weighted where possible • Establish appropriate measure tiers • Identify algorithms for translating performance metrics into energy and water usage. • Determine energy and water savings, relative to updated baseline • Normalize savings to account for differences in features across baseline and measure groups (e.g. tub volume, refrigerator volume). • Present proposed savings, compare to current PTR savings and identify causes for change.

  4. Energy and Water Algorithms • Primarily DOE, mostly as used in 6th Plan (FY10) Analyses

  5. Datasets • California Energy Commission Appliance Database • Manufacturer reported performance metrics and date of submission • QC: checked against CEE certification data where possible for accuracy • CEC datasets used in 6th Plan analysis, but more recent version of the database used for this analysis. • Cleaning: remove duplicates (same manufacture and specs, different model #); incomplete records; and records older than the date that the current federal standard went into effect. • Oregon Tax Credit • 2007 data included in 6th Plan analysis, and used for this analysis • Sales volume, basic performance metrics, retail price

  6. Residential Clothes Washers – Single Family

  7. Background – SF Clothes Washers • Last deemed savings update in August 2007 • Current Federal Standard: MEF ≥ 1.26 • Federal Standard, Jan. 1, 2011: MEF ≥ 1.26, WF ≤ 9.5 • Current Energy Star Criteria: MEF ≥ 1.8, WF ≤ 7.5 • Energy Star Criteria, Jan. 1, 2011: MEF ≥ 2.0, WF ≤ 6.0 • 6th Plan baseline assumption: MEF = 1.66, sales weighted average of Association of Home Appliance Manufacturers (AHAM) 2007 data. • Clothes washers on the market since 2007 have dramatically higher MEFs. • This proposal uses a baseline MEF of 1.9, the average MEF of residential clothes washers registered in the CEC Appliance Database from Jan. 1, 2007 to the present.

  8. Background – SF Clothes Washers

  9. Metrics Res. Clothes Washers (SF) • Modified Energy Factor (MEF) • [capacity] / [kWhmachine + kWhDHW + kWhdryer] • Water Factor (WF) • [capacity] / [gallons] • Percent Moisture Remaining • Capacity (ft3) • Other – Front vs. top loads, tub material (stainless steel / enamel / plastic), exterior color

  10. MEF DistributionRes. Clothes Washers (SF) • Dataset: CEC Appliance Database: registered products meeting current federal standard (MEF = 1.26) • Records with same manufacturer and performance specification but different model numbers counted as one record.

  11. PerformanceRes. Clothes Washers (SF) • Dataset: CEC Appliance Database • Baseline: all residential washers added from January 1, 2007 to present • Measure: Tiers by MEF eStar criteria, starting Jan. 2011 = 2.0

  12. Incremental CostRes. Clothes Washers (SF) • Dataset: OR Tax Credit Database, 2007 • Baseline has increased enough that incented models from 2007 can be used to determine current baseline costs. • All costs normalized to 3.26 ft3 tub volume to match baseline description. Baseline cost ($855) determined by linear cost vs. MEF fit.

  13. Baseline and Measure CharacterizationRes. Clothes Washers (SF) • Electric, Gas and Any DWH measures • Lifetime: 14 years (as in FY10 analysis and in current deemed measures). • Non-energy benefit: $10.03/1000 gallons for water supply and waste water services. (6th Plan value, from FY10 analysis). • disaggregated into • 5.29 kWh /1000 gallons (6th Plan) • $9.24/1000 gallons (preserves B/C ratio when kWh savings are included) • Loadshape:ResWASH • DHW Electric Fuel Share: 64% (6th Plan assumption) • Dryer Electric Fuel Share: 86% (6th Plan assumption)

  14. Energy and Water ConsumptionRes. Clothes Washers (SF) • All Electric: • Energy (kWh per load) = [capacity] / [MEF] • Water (gallons per load) = [capacity]*[WF] • Gas DHW and/or Dryer: • Disaggregate energy for machine, hot water, and dryer. Convert kWh loads to therms loads assuming typical efficiencies. • [see next slides for details]

  15. Hot Water ConsumptionRes. Clothes Washers (SF) • Interpolate % hot water by MEF based on DOE field tests. Set minimum hot water share to 10.5% Data source: “Technical Support Document: Energy Efficiency Program For Consumer Products And Commercial And Industrial Equipment: Residential Dishwashers, Dehumidifiers, And Cooking Products, And Commercial Clothes Washers” , Chapter 6. December 2009. U.S. DOE, Assistant Secretary Office of Energy Efficiency and Renewable Energy Building Technologies Program Appliances and Commercial Equipment Standards Washington, DC 20585 http://www1.eere.energy.gov/buildings/appliance_standards/commercial/pdfs/ccw_snopr_chap6.pdf

  16. Dryer Energy ConsumptionRes. Clothes Washers (SF) • Interpolate dryer energy per cycle as a function of remaining moisture content (RMC) based on DOE field tests. Data for washer capacity of 2.8 ft3 Data source: “Technical Support Document: Energy Efficiency Program For Consumer Products And Commercial And Industrial Equipment: Residential Dishwashers, Dehumidifiers, And Cooking Products, And Commercial Clothes Washers” , Chapter 6. December 2009. U.S. DOE, Assistant Secretary Office of Energy Efficiency and Renewable Energy Building Technologies Program Appliances and Commercial Equipment Standards Washington, DC 20585 http://www1.eere.energy.gov/buildings/appliance_standards/commercial/pdfs/ccw_snopr_chap6.pdf

  17. Savings and Cost-Effectiveness – Electric DHWRes. Clothes Washers (SF)

  18. Savings and Cost-Effectiveness – Gas DHWRes. Clothes Washers (SF)

  19. Savings and Cost-Effectiveness – Any DHWRes. Clothes Washers (SF)

  20. Proposal • Approve savings for residential clothes washers for MEF 2.2 and above.

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