Slide 1 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Residential Appliance Measure Updates Dishwashers Danielle Gidding Bonneville Power Administration Ryan Firestone and Wayne Leonard Navigant Consulting June 29, 2010

Slide 2 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Background - Dishwashers Last updated in February th Plan baseline EF assumption: 0.65 Average EF of models in market: 0.71

Slide 3 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Background – Dishwashers

Slide 4 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Metrics Res. Dishwashers Energy Factor (EF) [cycles] / [kWh machine + kWh DHW ] Water Factor (WF) [gallons]/ [cycle] Capacity (place settings) Use [cycles]/ [year] = 215 (per ENERGYSTAR) Other – Standby Energy Use, Supplemental Water Heating, Exterior Finish (stainless steel / wood grain), Truncated Cycle Capable

Slide 5 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Performance Res. Dishwashers Dataset: CEC Appliance Database

Slide 6 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Performance Res. Dishwashers Dataset: CEC Appliance Database Baseline: all standard size washers added from February 1, 2007 to present, with EF>= Federal Minimum (0.6) Measure: Tiers by EF eStar criteria, starting July 2011 EF = 0.7

Slide 7 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Incremental Cost Res. Dishwashers Dataset: OR Tax Credit Database, 2007 Baseline has increased enough that incented models from 2007 can be used to determine current baseline costs. Incremental cost data to be proposed at August RTF meeting.

Slide 8 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Baseline and Measure Characterization Res. Dishwashers Electric, Gas and Any DWH measures Lifetime: 12.3 years (as in FY10 analysis and in current deemed measures). Non-energy benefit: $10.03/1000 gallons for water supply and waste water services. (6 th Plan value, from FY10 analysis). disaggregated into 5.29 kWh /1000 gallons (6 th Plan) $9.24/1000 gallons (preserves B/C ratio when kWh savings are included) Loadshape: ResWASH DHW Electric Fuel Share: 64% (6 th Plan assumption)

Slide 9 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Energy and Water Consumption Res. Dishwashers All Electric: Energy (kWh per cycle) = [1] / [EF] Water (gallons per cycle) = [WF] WF interpolated using 6 th plan/DOE regression Gas DHW: Disaggregate energy for machine, hot water, and standby. Convert electric DHW loads to therms assuming typical DHW recovery efficiencies.

Slide 10 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Hot Water Consumption Res. Dishwashers Utilized same curve fit as presented in Jan 2007

Slide 11 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Savings and Cost-Effectiveness Res. Dishwashers

Slide 12 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Proposal Approve savings for residential dishwashers for EF 0.72 and above. Propose incremental costs at August RTF meeting.