1. Out-Of-Compliance Grocery UES Measure Recommendations Regional Technical Forum March 18, 2014

2. Presentation Outline Background Measure Overview Staff Highlighted Areas UES Workbook – Measure Descriptions – Measure Analysis and Input Details – Savings, Cost, and Cost Effectiveness RTF Staff Recommendation Proposed Decision 2

3. Background Multiple Grocery measures found Out-of-Compliance – Subsequent analysis determined remaining potential small – Extended sunset date at November 2013 meeting – Staff to develop plan to bring back into compliance Grocery measures in question: 1.ECMs for Walk-ins 2.Walk-in Evaporator Fan ECMotor Controllers 3.Compressor Head Fan Motor Retrofit to ECM 4.Floating Head Pressure Controls for Single Compressor Systems 5.Autoclosers 6.Door Gasket Replacement 7.Display Case LEDs (Open Cases) 8.Strip Curtains 3

4. Measure Overview Plan to go through each measure individually Seeking decision on methodology of 3 measures presented – Need to be updated with finalized EER results If 15% lower EER value, then ~5% increase in savings Staff working with PECI to obtain updates to other five grocery measures Will request sunset extension on measures not presented today 4

5. ECMs for Walk-ins 5

6. Measure Overview What does it do? – Replaces existing Shaded Pole motor with a more efficient Electrically Commutated Motor (ECM) – Savings occur from: Direct motor wattage reduction Waste heat reduction to refrigeration system 6

7. Recommendation Memo Items Recommendation Memo ItemStatusStaff Response The Average EER parameter is based on proprietary DOE 2.2-R simulations of Northwest grocery environments. This parameter needs to be derived transparently from publically available data. DoneLimited remaining potential and classification as a Small Saver alleviates the need to collect data. Used PECI modeling analysis to derive value. The sources for the Fan Input Power parameter are not published. Provide a summary of the analyses performed on the raw data to obtain the referenced values. DoneOnline check of motor sources confirms wattages used are sufficient. Further documentation is needed for Annual Fan Runtime Hours. If documentation is not available, use the suggested value of 8,322 sourced from Pacific Gas and Electric (PGE) and Southern California Edison (SCE) work papers. DoneUsed recommended source of SCE 2012 workpaper for defrost cycle time of 72 minutes per day. The sources noted for the Mix of Rated Fan Power and Mix of Low and Medium Temperature Walk-ins parameters should be more thoroughly documented. DonePECI has provided weightings based on site audit data. Weightings match ECM for Reach-in case measure. 7

8. Staff Highlighted Areas Weighting of motors into one category have large variation for smaller sized motors Measure is retrofit, therefore a pre-conditions baseline – Unsure of current market practice for motor replacement 8

9. Motor Weighting PECI provided motor weights for 3 motor classes: 1/20HP, 1/15HP, and 16-23 Watt Difference in weighted average for small motors 9 Wtd. Average

10. Motor Weighting Ok to leave as 1 measure based on PECI weighting of expected program conditions? Split into two measures? – One for 1/15 & 1/20 – One for 16-23 Watt Staff Recommendation: Split into two measures to account for savings variation 10

11. Pre-conditions RUL needs to be estimated for pre-conditions – DEER provides estimate of 5 years What is current practice at end of RUL? – If shaded pole motors only, then RUL=EUL – If combination of shaded pole and ECM, then: Full savings and cost assigned during RUL period Reduced savings and cost assigned for remaining EUL period Do we want to do this for small savers? Staff Recommendation: Assume current practice is 100% Shaded Pole and assign savings accordingly 11

12. Measure Descriptions Go to the following sections in the Summary tab in the proposed measure workbook: – Measure Properties – Measure Identifiers 12

13. Measure Analysis and Inputs Details Go to the following sections in the Summary tab in the proposed measure workbook: – Constant Parameters – Energy Savings Estimation Method, Parameters and Data Sources – Measure Incremental Costs and Benefits – Measure Lifetime 13

14. Savings, Cost, & Cost Effectiveness Go to the following sections in the Presentation tab in the proposed measure workbook: – Measure savings – Measure costs – Measure TRC B/C ratios 14

15. RTF Staff Recommendation Approve the ‘ECMs for Walk-ins’ UES measure as a “Small Saver” – Update EER values with finalized numbers once analysis is complete (~4% increase in savings) Split measure into two identifiers Assume current practice = all Shaded Pole Set the measure status to “Active” Set the sunset date to March, 2019 15

16. Proposed Decision “I _______________ move that the RTF: Pick one of each: [Split into two measures / weight into one measure]; and Assume current practice is [all Shaded Pole / x.x % is ECM]; and Approve the ‘ECM for Walk-ins’ measure as a “Small Saver” UES; Set the measure status to ‘Active;’ and Set the sunset date to March, 2019.” 16

17. ECMotor Controller for Evaporator Fans on Walk-ins 17

18. Measure Overview What does it do? – Installs a motor controller on Evap. systems already equipped with ECMs – Provides 2-speed operation of fans High when cooling; low when not – Savings occur from: Direct motor wattage reduction due to full speed runtime hours reduction Waste heat reduction to refrigeration system 18

19. Recommendation Memo Items Recommendation Memo ItemStatusStaff Response Recommend collecting primary meter data or use a sufficiently reliable secondary data source to establish the Full Speed Fan Motor Input Power for the 16 to 23 watt motor size category. DoneUsed fan motor power from ECM replacement analysis. Derived from manufacturer data. Recommend collecting primary meter data or use a sufficiently reliable secondary data source to establish the Low Speed Fan Motor Input Power. DoneUsed fan laws to ratio high/low power consumption based off full speed input power. Exponent set at 2.5 (Professional Judgment). The Average EER parameter is based on proprietary DOE 2.2-R simulations of Northwest grocery environments. This parameter needs to be derived transparently from publically available data. DoneLimited remaining potential and classification as a Small Saver alleviates the need to collect data. Used PECI modeling analysis to derive value. Further documentation is needed for Annual Fan Runtime Hours. DoneRelied on NRM metering study for this parameter and provided documentation on study when possible. 19

20. Staff Highlighted Areas None 20

21. Measure Descriptions Go to the following sections in the Summary tab in the proposed measure workbook: – Measure Properties – Measure Identifiers 21

22. Measure Analysis and Inputs Details Go to the following sections in the Summary tab in the proposed measure workbook: – Constant Parameters – Energy Savings Estimation Method, Parameters and Data Sources – Measure Incremental Costs and Benefits – Measure Lifetime 22

23. Savings, Cost, & Cost Effectiveness Go to the following sections in the Presentation tab in the proposed measure workbook: – Measure savings – Measure costs – Measure TRC B/C ratios 23

24. RTF Staff Recommendation Approve the ‘ECMotor Controller for Evaporator Fans on Walk-ins’ UES measure as a “Small Saver” – Update EER values with finalized numbers once analysis is complete (~6% increase in savings) Set the measure status to “Active” Set the sunset date to March, 2019 24

25. Proposed Decision “I _______________ move that the RTF: Approve the ‘ ECMotor Controller for Evaporator Fans ’ measure as a “Small Saver” UES; Set the measure status to ‘Active;’ and Set the sunset date to March, 2019.” 25

26. Compressor Head Fan Motor Retrofit to ECM 26

27. Measure Overview What does it do? – Replaces existing Shaded Pole motor with a more efficient Electrically Commutated Motor (ECM) on a compressor head fan – Savings occur from: Direct motor wattage reduction 27

28. Recommendation Memo Items Recommendation Memo ItemStatusStaff Response Provide data sources with metered data to justify baseline and efficient Input Motor Wattage assumptions. DoneOnline check of motor sources confirms wattages used are sufficient. Revise annual run time to apply Duty Cycle of 70% instead of 75%, based on revised values reported in Navigant Consulting’s “Energy Savings Potential and R&D Opportunities for Commercial Refrigeration Equipment.” DoneUpdated assumption with more recent data as per recommendation memo. Additional data should be collected for the Fan Motor Size Population Weighting which was supplied by one grocery chain based on a review of its own refrigeration equipment. DoneNo additional data available. Uptake has been minimal, and Kroger is primary target of measure. Propose to keep weighting as-is using grocery store values. 28

29. Staff Highlighted Areas None 29

30. Measure Descriptions Go to the following sections in the Summary tab in the proposed measure workbook: – Measure Properties – Measure Identifiers 30

31. Measure Analysis and Inputs Details Go to the following sections in the Summary tab in the proposed measure workbook: – Constant Parameters – Energy Savings Estimation Method, Parameters and Data Sources – Measure Incremental Costs and Benefits – Measure Lifetime 31

32. Savings, Cost, & Cost Effectiveness Go to the following sections in the Presentation tab in the proposed measure workbook: – Measure savings – Measure costs – Measure TRC B/C ratios 32

33. RTF Staff Recommendation Approve the ‘Compressor Head Fan Motor Retrofit to ECM’ UES measure as a “Small Saver” Set the measure status to “Active” Set the sunset date to March, 2019 33

34. Proposed Decision “I _______________ move that the RTF: Approve the ‘ Compressor Head Fan Motor Retrofit to ECM ’ measure as a “Small Saver” UES; Set the measure status to ‘Active;’ and Set the sunset date to March, 2019.” 34

35. OTHER OOC GROCERY MEASURES 35

36. RTF Staff Recommendation Staff needs more time to incorporate changes and data from PECI Request 3 month sunset extension for the following measures: 36 MeasureStatusSunset Date Grocery - Floating Head Pressure Controls for Single Compressor SystemsOut-of-Comp.June, 2014 Grocery - AutoclosersOut-of-Comp.June, 2014 Grocery - Door Gasket ReplacementOut-of-Comp.June, 2014 Grocery - Display Case LEDs (Open Cases)Out of Comp.June, 2014 Grocery - Strip CurtainsOut-of-Comp.June, 2014

37. Proposed Decision 37 “I _________ move that the RTF extend the sunset dates for the following measures shown below.” MeasureStatusSunset Date Grocery - Floating Head Pressure Controls for Single Compressor SystemsOut-of-Comp.June, 2014 Grocery - AutoclosersOut-of-Comp.June, 2014 Grocery - Door Gasket ReplacementOut-of-Comp.June, 2014 Grocery - Display Case LEDs (Open Cases)Out of Comp.June, 2014 Grocery - Strip CurtainsOut-of-Comp.June, 2014