1. Out-Of-Compliance Grocery UES Measure Recommendations Regional Technical Forum June 17, 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 – Done 2.Walk-in Evaporator Fan ECMotor Controllers – Done 3.Compressor Head Fan Motor Retrofit to ECM – Done 4.Display Case LEDs (Open Cases) 5.Floating Head Pressure Controls for Single Compressor Systems 6.Door Gasket Replacement 7.Auto Door Closers 8.Strip Curtains 3

4. Background – Remaining Potential 4 Regional Priority SectorMeasure Remaining Potential aMW (Cadmus) Remaining Potential aMW (PECI) Notes 1Grocery Grocery - Display Case LEDs (Open Cases) 0.48N/A Measure of interest for PECI 2Grocery Grocery - Floating Head Pressure Controls for Single Compressor Systems 0.460.06 Remaining potential is small for PECI program (when measure is limited to grocery sector) 3GroceryGrocery - Autoclosers 0.260.21 Remaining potential is small for PECI program 3GroceryGrocery - Door Gasket Replacement 0.650.021 Remaining potential is small for PECI program 3GroceryGrocery - Strip Curtains 1.610.015 Remaining potential is small for PECI program Note: Remaining potential based on PNW territory only.

5. What hasn’t been done Estimating measure interactions very limited – Only looked at HVAC interaction within measure – Possible to have interactions among measures 5 RTF Measure Interactions Auto Door Closers Display Case LEDs (Open Cases) Door Gasket Replacement Floating Head Pressure Controls for Single Compressor Systems Strip Curtains Auto Door Closers xx Display Case LEDs (Open Cases) Door Gasket Replacement x x Floating Head Pressure Controls for Single Compressor Systems Strip Curtains xx

6. What direction to take? Can ask RTF staff to: – Bring measure back including interactions Will need to define a “full package” for grocery refrigeration cases – Estimate interactions among measures RTF professional judgment – Ignore interactions Staff estimate is that interactions are likely small and do not warrant further research. – Furthermore, estimation methods of measures are varied and it may not be practical to reliably determine interactions Should staff resources be spent on estimating measure interactions for measures the RTF has categorized as Small Savers? 6

7. Display Case LEDs (Open Cases) 7

8. Measure Overview What does it do? – Either: Replaces existing fluorescent lamps on Open Display Cases with LEDs Installs LEDs in new cases instead of fluorescent lamps De-lamps fluorescent lamps in existing cases – Savings occur from: Wattage reduction of lamps Runtime and load reduction of refrigeration system Load reduction on store HVAC heating system – Assuming grocery stores heat most of the year 8

9. Recommendation Memo Items Recommendation Memo ItemStaff Response The Hours of Operation parameter needs to be based on metered data. Small Saver status negates the need to collect primary data. Will use Hours of Operation derived in other RTF approved grocery measure (i.e. ASHC). The Portion of lamp energy rejected to the refrigerated space parameter should be based on measured data or engineering analysis. Small Saver status negates the need to collect primary data. Will use DOE TSD which estimates this parameter. 9

10. Staff Highlighted Areas Measure specs – Changed measure spec to align with BPA implementation which states that efficacy of LED lights must be within 10 lumens/watt of Design Lights Consortium specifications. – Removed requirement for permanently installed fixture (drop-in replacement lamps now allowed) LED life – Manufacturer rating of 50,000 hours used Results in a 7 year EUL based on HOU 10

11. 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 11

12. RTF Staff Recommendation Use manufacturers claim of LED life in estimating EUL Restrict RTF-approved period to 2 years to look at persistence of drop-in LED lamps Approve the ‘Display Case LEDs (Open Cases)’ UES measure as a “Small Saver” Set the measure status to “Active” Set the sunset date to June, 2016 to account for rapidly evolving LED technology 12

13. Proposed Decision “I _______________ move that the RTF: Approve the ‘Display Case LEDs (Open Cases)’ measure as a “Small Saver” UES; Set the measure status to ‘Active;’ and Set the sunset date to June, 2016.” 13

14. Floating Head Pressure Control on Single Compressors 14

15. Measure Overview What does it do? – Installs Floating Head Pressure Controls on single compressor systems Allows head pressure of system to follow ambient dry bulb temperature instead of preset on/off operation based on cut-in/cut-out pressures – Savings occur from: Load reduction of refrigeration system 15

16. Recommendation Memo Items Recommendation Memo ItemStaff Response The review team did not have access to the eQuest simulation models used to derive energy savings by Compressor Size, climate zone, and case temperature. Climate Weighting Factors do not match the climate zone maps produced by the RTF. PECI provided eQuest models and updated compressor sizing by case temp. Grocersmart climate weights more representative than RTF residential weightings. The source of Suction Temperature Setpoints is not cited. Condensing Unit MT: 12°F Condensing Unit LT: -23°F Remote Condenser MT: 17°F Remote Condenser LT: -20°F Based on Professional Judgment and used in eQuest analysis. 16

17. Staff Highlighted Areas Measure spec – Clarified that measure is applicable to grocery sector only Remaining potential that qualifies this as a small saver is based on this assumption 17

18. Updated Compressor Weights 18

19. 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 19

20. RTF Staff Recommendation Restrict measure to grocery sector only Approve the ‘Floating Head Pressure Control on Single Compressors’ UES measure as a “Small Saver” Set the measure status to “Active” Set the sunset date to June, 2019 20

21. Proposed Decision “I _______________ move that the RTF: Restrict measure to grocery sector only Direct staff to look at potential for FHPC outside of the grocery sector and bring back to RTF at next meeting Approve the ‘Floating Head Pressure Control on Single Compressors’ measure as a “Small Saver” UES; Set the measure status to ‘Active;’ and Set the sunset date to June, 2019.” 21

22. Door gaskets on walk-ins and reach-ins 22

23. Measure Overview What does it do? – Replaces existing worn gasket with new gasket – Savings occur from: Runtime reduction on refrigeration system Load reduction on store HVAC heating system – Assuming grocery stores heat most of the year 23

24. Recommendation Memo Items Recommendation Memo ItemStaff Response The savings estimates are laboratory tests on one reach-in freezer and one walk-in environmental unit configured to simulate conditions of a walk-in freezer and a walk-in cooler with simulated damaged and undamaged gaskets. These limited test conditions do not meet the standards for statistical, meta-statistical, or calibrated engineering methods of estimating savings. A larger sample of test conditions is required to validate the conclusions. Designation as small saver negates the need for more primary data collection. Existing data and Professional Judgment to be used instead. Three of the four measures are directly supported by individual laboratory test procedures as performed by Emerson Technologies. However, the savings figure for the reach-in glass doors medium temperature measure is simply estimated assuming a 67% factor of the reach-in glass door low temperature measure figures. Designation as small saver negates the need for more primary data collection. Existing data and Professional Judgment to be used instead. The measure definition states that the new gasket “must replace a worn or damaged gasket.” This statement is too vague since it could apply to gaskets which are effective infiltration barriers as well as those which are not. This specification should be updated as a result of investigations into the condition of baseline gaskets Using standard Hand Test. “If a hand can be placed through a gasket and a tear is 6” and greater, the gasket is considered damaged.” 24

25. Staff Highlighted Areas Changed measure spec to include “hand test” to determine eligibility Door open times – Two sources exist for door open times, with varying results Gasket baseline – Many stores found to maintain gaskets outside program; professional judgment needed 25

26. Door Open Times Two studies provide different results on door open times Recommend using combination of both results – Weighted by ‘n’ in each sample 26 *Note: Using only PECI data for Low-temp walk-in since none metered in ADM study. Mean and median of those 4 sites is around 4.5%. PECIADMCombined nMean (Door Open)n Low Temp Reach In1412.2%462.8%5.0% Medium Temp Reach In50.4%903.8%3.6% Low Temp Walk In44.5%-- Medium Temp Walk In1514.9%1434.3%24.3%

27. Gasket Baseline ADM study indicates high replacement rate even without maintenance contracts (12 out of 71 had contracts) Professional judgment needed on interpreting results 27 Table J ‐ 3. Frequency of Maintaining Door Gaskets Frequency of MaintenanceCountPercent Percent (Re- sample) Often3153%58% Sporadically1119%21% No1119%21% Don't know35%0% Refused/Not Applicable35%0% Total59100% Table J ‐ 5. Elapsed Years to Maintaining Gaskets YearsCountPercent Percent (Re- sample) At least once a year37% 8% Less than 2 years512% 13% 2 to 3 years1944% 48% 3 to 4 years716% 18% 4 to 5 years25% More than 5 years49%10% Don't know37%0% Total43100% Source: Commercial Facilities Contract Group 2006-2008 Direct Impact Evaluation Study ID: PUC0016.03 Volume 3 of 3 HIM Appendices 79%68%53% 100%-53% = 47% de-rating factor

28. Gasket Baseline Recommend applying Maintenance Adjustment Rate to savings estimate based on ADM evaluation findings – Accounts for gasket replacement being done in grocery stores without maintenance contracts Recommend restricting measure to stores without maintenance contracts in place – If program did not check for maintenance contracts, Maintenance Adjustment Rate would change from 47% -> 39% 28

29. 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 29

30. RTF Staff Recommendation Use the combined study samples to estimate door open times Restrict the measure to stores without maintenance contracts Incorporate the Maintenance Adjustment Rate Approve the ‘Door Gaskets’ UES measure as a “Small Saver” Set the measure status to “Active” Set the sunset date to June, 2019 30

31. Proposed Decision “I _______________ move that the RTF: Use the combined study samples to estimate door open times Restrict the measure to stores without maintenance contracts Incorporate the Maintenance Adjustment Rate Approve the ‘Door Gaskets’ measure as a “Small Saver” UES; Set the measure status to ‘Active;’ and Set the sunset date to June, 2019.” 31

32. Door Auto Closer on walk-ins and reach-ins 32

33. Measure Overview What does it do? – Installs a new Door Auto Closer on existing walk-in or reach-in case that either has one that is broken or does not have one at all – Savings occur from: Runtime reduction on refrigeration system Load reduction on store HVAC heating system – Assuming grocery stores heat most of the year 33

34. Recommendation Memo Items Recommendation Memo ItemStaff Response The amount of time that doors are normally unintentionally left ajar, the Doorway Open Time Factor, is set at 25% of daily hours for all four measures. This assumption needs to be based on measured data. Small Saver negates the need to collect primary data. Door open time based on ADM study and PECI measured data from gasket test as a baseline. Professional judgment will be needed for reduction in door open time. The savings figure for the reach-in glass doors medium temperature measure is estimated assuming a 66% factor of the reach-in glass door low temperature measure figures. Support with data. Small saver negates need to collect primary data. Professional Judgment will be used. 34

35. Staff Highlighted Areas Unintentional door open time – Based on professional judgment only 35

36. Unintentional Door Open Time Value is meant to represent time door is left unintentionally open – Not the same as door open/close times for accessing product Use gasket study open times as a reality test 36 Weighted average of all sitesMean Minutes open per day Autocloser reduction in unintentional time left open Minutes unintentionally left open per day Hours unintentionally left open per day Low-temp Reach-in Avg. 5.0% 7125.0%180.3 Med-temp Reach-in Avg. 3.6% 5225.0%130.2 Low-temp Walk-in Avg. 4.5% 6425.0%160.3 Med-temp Walk-in Avg. 24.3% 35025.0%871.5

37. 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 37

38. RTF Staff Recommendation Maintain door open time estimate of 25% Approve the ‘Door Auto Closer’ UES measure as a “Small Saver” Set the measure status to “Active” Set the sunset date to June, 2019 38

39. Proposed Decision “I _______________ move that the RTF: Approve the ‘Door Auto Closer’ measure as a “Small Saver” UES; Set the measure status to ‘Active;’ and Set the sunset date to June, 2019.” 39

40. Strip Curtains on Walk-ins 40

41. Measure Overview What does it do? – Installs a strip curtain on a walk-in freezer or cooler where none existed before (so my picture was a little misleading) – Savings occur from: Load reduction of refrigeration system Load reduction on store HVAC heating system – Assuming grocery stores heat most of the year 41

42. Recommendation Memo Items Recommendation Memo ItemStaff Response The measure definition should clarify whether or not the measure applies to walk-in units with loading dock exterior doors. The average environmental temperatures used in the ADM HIM report apparently include some fraction of exterior spaces. The HVAC interaction factor has a small impact on savings. However infiltration air is large. Professional judgment needed. Research Plan called for the collection of Time Door Open per Day for both pre- and post-installation periods to ensure the savings calculations account for any post installation variation in door open times. Results were presented from metering in August 2011, which showed that the results were not statistically significant. New data is needed. Should we use non-statistically significant data for this parameter? Professional judgment needed. The values for the Temperature of Surroundings parameter, which are found on the “Assumptions” worksheets for the various building types, need to be based on regional measured data. If limited to walk-ins that no exterior doors, likely that surrounding temperatures are similar in CA grocery stores compared to the PNW. 42

43. Staff Highlighted Areas Temperature of Surroundings Parameter – Some walk-ins open to unconditioned spaces – No adjustment for PNW compared to CA Strip Curtain Takeback – Do door open times increase after strip curtains are installed Strip Curtain baseline – Many stores found to maintain strip curtains outside program; professional judgment needed 43

44. Temperature of Surroundings Used to determine infiltration air temp A small swing of infiltration temp produces a large swing in savings – Savings increase as infiltration temp increases ADM study results use storage area temps in respective establishments – These include some indoor and unconditioned zones No easy way to access ADM data on climate zone weightings to discern % or outdoor/indoor walk-ins used Recommend limiting measure eligibility to walk-ins that open to conditioned spaces only – Likely that storage areas/grocery stores same in PNW and CA 44

45. Strip Curtain Takeback Door open time is a primary determinant No statistical data on door open times – Definitely none for strip curtain post-install Some evidence does suggest significant takeback can occur 45

46. Strip Curtain Takeback 46

47. Strip Curtain Takeback 47 December 2007 BPA M&V presentation

48. Strip Curtain Takeback Effect of adjusted post-install times on savings Range of 9% -> 20% savings difference 48 Cooler walk-inFreezer walk-inCooler walk-inFreezer walk-inCooler walk-inFreezer walk-inCooler walk-in Pre-install door open time (mins)4538 9132102494 Post-install door open time (mins)7261 14211163790

49. Strip Curtain Takeback Recommend incorporating some level of takeback in estimate – BPA single case study shows ~160% in post case No significant data on this estimate Up to RTF professional judgment 49

50. Strip Curtain Baseline Similar to gaskets: Many stores already doing maintenance regardless of contracts Professional judgment needed on interpreting results 50 Source: Commercial Facilities Contract Group 2006-2008 Direct Impact Evaluation Study ID: PUC0016.03 Volume 3 of 3 HIM Appendices 65%76%49% 100%-49% = 51% de-rating factor Table K ‐ 4 Respondents Reporting That They Do Maintenance Frequency of MaintenanceCountPercent Percent (Re- sample) Yes2061%65% No1133%35% Don't know26%0% Total33100% Table K ‐ 5. Frequency of Maintaining Strip Curtains YearsFrequencyPercent Percent (Re- sample) At least once a year840%47% Less than 2 years15%6% 2 to 3 years420%24% 3 to 4 years210%12% More than 5 years210%12% Don't know15%0% Refused/Don't Know210%0% Total20100%

51. 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 51

52. RTF Staff Recommendation Takeback effect has a very large a swing in savings and very little data to support it. – Even as a small saver, savings my be vastly different than expected – If you increase door open times enough, savings can drop to zero (or beyond) Staff recommends deactivating measure unless some data can be used to support post-install door open times 52

53. Proposed Decision “I _______________ move that the RTF: Deactivate the ‘ Strip curtains ’ UES measure. 53