1. D EEMED M EASURE U PDATES May 3, 2011 Regional Technical Forum Presented by: Bob Tingleff SBW Consulting, Inc.

2. Measures updated 1. Residential CFLs 2. Residential showerheads 3. Network PC power management 4. Single-family weatherization 5. Single-family duct sealing 6. Single-family heat pump conversion 7. Single-family line voltage thermostats 8. Residential refrigerators 9. Also looked at commercial efficient computers – no measure recommended at this time 5/3/2011

3. Summary of Updates Residential CFLs  Significant changes Network PC power management  Integrated new studies – minor change in UES Residential showerheads  Changed 2 parameters – significant changes in UES 4 Single Family SEEM measures  Minor changes Residential refrigerators  Clarified documentation 5/3/2011

4. Update Limitations UES only In some cases, cost and lifespan research is needed to complete workbooks Minor work is needed in procost – the cost effectiveness software – to accommodate Excel 2007 format 5/3/2011

5. Residential CFLs Based savings on study by KEMA of 2006-08 California programs  Different room types than current measures  Lower overall hours of operation (2.3 -> 1.9 average hours/day)  Lower baseline watts per bulb (71 -> 61 W average) results in lower delta watts per bulb (52 -> 44 W average) 5/3/2011

6. Residential CFLs Converted retail measures into one overall average measure  Eliminated by-room measures – information not available Eliminated “Complete dwelling unit” measure (These recommendations were not noted previously) 5/3/2011

7. Energy Independence and Security Act (EISA) of 2007 Today’s Standard Lamps (Baseline)EISA Effective Dates EISA’s Intended Replacement Lamps (New Baseline) 40 W incandescent(approx. 490 lumens)201429 W (310-749 lumens) 60 W incandescent(approx. 840 lumens)201443 W (750 – 1049) 75 W incandescent(approx. 1,190 lumens)201353 W (1050 – 1489) 100 W incandescent(approx. 1,690 lumens)201272 W (1490 – 2,600) 5/3/2011

8. Baseline Watts – market share 5/3/2011

9. Residential CFLs Accounted for Energy Independence and Security Act (EISA) by adjusting the baseline for 2012 and 2013  Proposing single set of measures through 2013, using an average baseline for 2011, 2012, 2013  For the 2012 period, incandescent baseline is adjusted by replacing 85W – 150W with 72W (intended EISA replacement) Bulbs in this 100W range account for 12% of baseline  For the 2013 period, baseline is adjusted by replacing 70W – 84W with 53W (intended EISA replacement) Bulbs in this 75W range account for 11% of the baseline 5/3/2011

12. UES Options As proposed – single measure group until Jan, 2014  Weighted average baseline for the entire period 3 measures – one for 2011, one for 2012, one for 2013 Single measure group, but only until Jan, 2013  Weighted average baseline of 2011, 2012 5/3/2011

13. Recommendations Research needed to establish costs for halogen baseline bulbs Set status to Deemed after completing cost- effectiveness work Sunset criteria  Dec 31, 2013 5/3/2011

14. Network PC Power Management Incorporated results from Avista and Cadmus/PSE studies Updated parameters based on review of methodology and parameters  Duty cycle – time spent in Active, Idle, Sleep, Off, Unplugged  Power consumption of desktops, including Energy Star share  Baseline and measure Power-Management-Enabled fractions  Shift in duty cycle hours due to measure  Desktops only – prior measure included laptops Updated Energy Star UEC from most recent shipment data Used DOE 2 simulations to compare Lighting vs. Power Management heating/cooling interaction factors 5/3/2011

15. Savings Difference without Interaction Factor 5/3/2011

16. Heating/Cooling Interaction Factors Are PC Power Management factors significantly different than lighting interaction factors?  Used DOE 2.1e prototypes of commercial buildings in Seattle Large office K-12 School  Compared lighting interaction factor with PC power management interaction factor  Used RTF formulas to derive electric from gas or vice-versa; showing electric only 5/3/2011

19. Space Conditioning Conclusions Network PC Power Management interaction factors appear to be significantly different than lighting interaction factors  Load shape, lighting-to-space heat ratio More study is needed to determine actual interaction factors  Prototype definitions  Sensitivity analysis May need multiple measures by building type 5/3/2011

20. Recommendations Heat/Cool interaction factors should be clarified before measure can be classified as Deemed 5/3/2011

21. Residential low-flow showerheads Added direct-install multi-family category  Fewer occupants per shower Collapsed retail measures into single measure  Eliminated primary vs. secondary shower distinction and electric vs. gas sub-measures  (This was not noted as a recommendation earlier) Changed low-flow shower length to be the same as baseline  Previous assumption was that low-flow showers were longer in duration  Review of studies does not support that conclusion Changed mail-by-request install rate from 60% to 76%  Average of earlier reported values of 93% (SCL), 59% (ETO), and 76% (2008 PSE survey of installation rates) 5/3/2011

23. Recommendations Research needed to establish costs for Multi- family Direct Install Set status to Deemed after cost-effectiveness work is completed Sunset criteria  5 years  Review if Energy Star changes WaterSense definition (currently 2.0 gpm)  Review if code changes (WA currently 2.5 gpm)  Review on publication of any new low-flow shower study 5/3/2011

24. SF Weatherization Added cooling savings to FAF and zonal homes  Previously only attributed to heat pumps and “average” heating system  40% of electrically heated homes are assumed to have cooling  22% of electrically heated homes have heat pumps  => add 18% of cooling savings to FAF and zonal Clarified some documentation questions, especially source of heat pump assumptions (2005 NEEA heat pump report) 5/3/2011

25. UES Impact Minor shift in UES  Cooling savings were less than 2% of heating savings 5/3/2011

26. Recommendation Return status to Deemed Sunset criteria  Review based on analysis of residential energy use surveys (2012?)  5 year limit 5/3/2011

27. SF Duct Sealing Updated to latest version of SEEM inputs (includes new HP sizing) Corrected error in weightings – use square footage weightings for duct sealing rather than weatherization Ecotope clarified documentation questions, especially related to duct leakage assumptions  New sources noted in workbook 5/3/2011

29. Recommendation Return status to Deemed Sunset criteria  Review upon publication of housing stock survey (2012?)  Update upon significant changes to SEEM model or inputs  5 year limit 5/3/2011

30. SF HP conversion On further review, no changes needed  We had recommended a change to convert SEER 14.5 to SEER 14  This was already being done 5/3/2011

31. Recommendation Return status to Deemed Sunset criteria  Review upon publication of housing stock survey (2012?)  Update upon significant changes to SEEM model or inputs  5 year limit 5/3/2011

32. SF Line voltage thermostats Changed source of annual usage from Sunday model to fully weatherized latest SEEM model Reviewed and accepted 5% value for savings Withdrew recommendation to establish separate measure for new construction  Model is of fully weatherized older home 5/3/2011

34. Recommendation Return status to Deemed Sunset criteria  Review upon publication of housing stock survey (2012?)  Review upon publication of any new thermostat study  5 year limit 5/3/2011

35. Residential Refrigerators Checked impact of updating refrigerator database from California Energy Commission  Last update: July 2010  Unweighted average change: 1.9% increase in savings  Documented procedure for update Clarified source of HVAC interaction factor – residential CFLs analysis Confirmed Energy Star market share assumption 5/3/2011

36. Recommendations Set status to Deemed Sunset criteria  Original recommendation was to update UEC values annually from Energy Star and California Energy Commission database  Change recommendation to every 2 years – July, 2012 5/3/2011

37. Commercial Efficient Computer Proposed measure Savings in the range 50 - 100 kWh/yr. for average Energy Star desktop 5/3/2011

38. Issues Needs an upstream delivery mechanism (NEEA); not a utility-driven measure Probably need up-to-date data on shipments Desktops are declining share of market Notebook definition in flux Currently notebooks have high Energy Star penetration (> 50%) 5/3/2011

39. Recommendations Discontinue RTF’s pursuit of this as a deemed measure until a delivery mechanism is proposed (likely from NEEA) 5/3/2011