1. 5 Small Saver Cooking Measures Fryers, Holding Cabinets, Convection Ovens, Combination Ovens, Steamers Regional Technical Forum July 16, 2013

2. Cooking Measure Overview Current Category: Small Saver Current Status: Under Review Current Sunset Date: July, 2013 Reason for Update/Review: Follow-up to recommendation memo Subcommittee Review: Yes (volunteer panel) 2

3. Foodservice measure history 5 cooking measures recommended to Small Saver category during 2012/2013 review Many common parameters among measures – Recommendation memos suggest convening expert panel to discuss several parameters Met with foodservice volunteers on 7/1/13 Arrived at agreement among many common parameters and measure savings approach – Several decisions suggested for full RTF discussion

4. Subcommittee Volunteer List Rick Knori (Lower Valley Energy) Jeff Mitchell (PECI) Tianna Byrtus (PSE) - Provided program data Nick O’Neil (NPCC) Received program info from Ted Light (ETO) Talked with David Zabrowski at FSTC after subcommittee meeting

5. Parameters common to all measures Efficient Case Market Penetration Rate Annual Hours of Operation Baseline and Efficient Case Sources Preheat Energy Lbs of Food cooked per day Lbs/day Utilization Factor

6. Efficient Case Market Penetration Rate Agreed to use ENERGY STAR shipment data to establish penetration rates – Published in 2011, and refreshed annually – Use unless spec has recently taken place, skewing shipments In those cases, use CEC database (if available) or entire market as proxy for market penetration rate This occurs with HFHC where new spec has taken place and CEC database data provides a proxy for market

7. Annual Hours of Operation FSTC & DEER say 15 hours/day, 365 days/year – Likely to be different for each building type 2009 CBSA shows varying hours by building type – Restaurant: 93 hours/week – Hotel/Motel: 160 hours /week – School: 52 hours/week – Dry Goods Retail: 73 hours/week Agreed store HOU ≠ equipment HOU – i.e. We need a utilization factor FSTC uses a set lbs food cooked /day to arrive at utilization average across building use types Previous method used max cooking rate and developed “part-load” usage of equipment per day

8. HOU Reports & Methodology 1993 Arthur D. Little (ADL) report provides estimates of cooking equipment distribution by building type (referenced by FSTC 2002 tech assessment) 2009 CBSA provides a representative sample of PNW building operating hours FSTC methodology incorporates a “utilization factor” by determining average lbs/day of food cooked on equipment compared to theoretical maximum – Doing so allows for separation of idle and cooking energy – Still uses average of 15hrs/day and 365 days/yr for calculations

9. HOU Reports & Methodology Agreed that approach would be: – Use ADL distribution of equipment locations* Ex. % split of equipment found in schools vs. restaurants – Use CBSA data to obtain daily HOU Ex. Average HOU/week for grocery vs. hospital – Use professional judgment to estimate annual days of operation for each business type Ex. Schools - 180 days/yr; Hospitals - 365 days/yr – Weight annual HOU estimates by equipment distribution to find overall average HOU for each piece of equipment *No ADL data available for HFHCs. Used PSE program data as proxy for likely install locations

10. 2009 CBSA Data Distribution from ADLPSEAnalysis Facility Type HOU/Weekn% of totalFryersOvensSteamersHFHC* Days/Week HOU/Day Days/Year** HOU/Year Office5938929%3%6%5%2%5122492937 Dry Goods Retail7335426%20%12%17%0%7103653809 Restaurants931279%50%30%43%24%7133654853 Grocery11314711%6%7%0%2%7163655896 Schools5220915%9%21%15%72%5101801872 Hotel/Motel160665%10%18% 0%7233658349 Hospital122584%2%6%3%0%7173656366 Weighted average78 6133033915 *Not in ADL report so used weighted average of PSE install locations with ADL hours of use estimates **Offices: 249 workdays are used per year. Assume 52 weeks/yr x 5 days/week minus 12 holidays. Schools: 180 days per year typical for schools HOU Results HOU using CBSA Hours and ADL distribution Cooking Equipment Average HOU/Year HOU/WeekWeeks/YearDays/WeekHOU/DayDays/Year Fryers4,77293516.813.7347 Ovens4,76995506.414.7324 Steamer4,78394516.614.3335 HFHC*2,68963435.511.4235 *No data for HFHC in ADL study so PSE program data used to determine install location mix

11. Baseline and Efficient Case Sources Most parameters rely on testing done by FSTC – FSTC uses “representative sample” of economy grade and efficient grade units tested in the lab Not comprehensive but end-use monitoring confirms energy use – Some measures have different sources available CEC Database, FSTC dataset, ENERGY STAR QPL FSTC also tests and develops measures outside ENERGY STAR spec – Ex. 2/3 size combi-oven analyzed by FSTC however excluded by ENERGY STAR Agreed to use FSTC dataset for baseline case, and ENERGY STAR and CEE tiers (if developed) for efficient case

12. Preheat Energy Used in all measures FSTC provides estimate of energy, time and number per day Makes up less than 15% of overall unit energy consumption for an 8-hour/day operation – Savings impact is even less between baseline and efficient case: ~1-3% Agreed to adopt FSTC estimates of preheat energy, time and number per day

13. Lbs of Food Cooked Per Day Most FSTC measures use this parameter as a proxy for utilization – Given as lbs of food cooked per day compared to full load lbs/hr capability of equipment Typically equivalent to around a 15% utilization rate FSTC estimates values based on average makeup of building types* – Previously thought this was based on full-service restaurants only Agreed to use FSTC estimated values of lbs/day *Conversation with Dave Zabrowski at FSTC on 7/10/13

14. Remaining Issues for RTF Discussion EUL is not currently supported by data – DEER and FSTC assume 12 years Consistent with previous RTF analysis (likely citing DEER as a reference) – 2004 SERA retention study* (cited in DEER) indicates high removal/failure rate Likelihood analysis showed an EUL estimate of 5.6 years for ovens and 6.9 years for fryers. – 5.6 years for both if you include failed businesses – Other equipment studied had low sample sizes *ftp://ftp.cpuc.ca.gov/PUC/energy/electric/energy+efficiency/Rulemaking/cpucretentionrptsera102004_v20.pdf

15. SERA Retention Study

16. Retention Study Drawbacks Study doesn’t specify location in samples – Equipment more likely to fail in high use areas Unsure of what was replaced – Doesn’t mention if replaced efficiency was same or better, just that equipment did not match rebate Potential unknown equipment issues in 2004 – Was ENERGY STAR performance in 2004 as reliable as the market baseline equipment?

17. Potential EUL Path Assume restaurant kitchens have shortest life – Used 5.6 years in analysis, yielding 27,175 total equipment hours (cooking and idle) Ratio EUL of other business sectors to restaurant equipment hours Weight EUL for each sector by ADL distribution, consistent with savings methodology *EUL Limited to maximum of 25 years Analysis Facility Type Days/Week HOU/Day Days/Year** HOU/Year Equip Hours EUL Office5122492,93744,90115 Dry Goods Retail7103653,80934,6209 Restaurants7133654,85327,1756 Grocery7163655,89622,3654 Schools5101801,87270,44225* Hotel/Motel7233658,34915,7952 Hospital7173656,36620,7153 Weighted average6133033,91539,57612 Cooking Equipment Average HOU/Year HOU/DayDays/YearEUL Fryers477213.73478 Ovens476914.732410 Steamer478314.33359 HFHC*268911.423520

18. Savings Comparison *Current proposal removes ¾ size HFHC and adds 4-pan & 10-pan steamer, and large-size Combi oven

19. Cost Comparison

20. TRC Comparison *High TRC capped at 11.0 to maintain chart scale

21. Decision “I _______ move to approve the updates to the 5 UES Cooking measures (HFHC, Steamers, Fryers, Combination Ovens & Convection Ovens); set the measure status to “Active”; and change the sunset date to July 2018 or until ENERGY STAR specifications are updated, whichever is sooner.”

22. BACK-UP SLIDES Subcommittee Decisions for Reference

23. Summary of UES Specific Issues HFHC – No market penetration data available Use splits in CEC database as market proxy Convection Oven – Two specs available to use for efficient case – Develop savings for ENERGY STAR v2.0 spec only which goes into effect 1/1/14 Difference between current v1.1 and proposed v2.0 is minimal (71% efficiency requirement compared to 70%) Only 1 model drops out of FSTC savings analysis

24. Summary of UES Specific Issues Combination Ovens – No data on combination mode use in field – FSTC assumes 50% in steam mode, 50% in oven mode – Recommend using FSTC assumptions since no field data exists Consistent with our “we know it’s something, but we don’t know exactly what it is” methodology – FSTC test data do not align with ENERGY STAR criteria Ex. FSTC tests efficient units and finds 73% average efficiency; ENERGY STAR requires minimum 75% efficiency Reason is because ENERGY STAR developed after FSTC workpapers Use ENERGY STAR data in FSTC savings methodology where lacking – No ENERGY STAR shipment data available since spec is new Program history implies very little uptake of measure Agreed to set market penetration rate at zero

25. Summary of UES Specific Issues Steamers – ENERGY STAR allows boilerless and boiler based systems to qualify; large difference in water consumption 92% are boilerless on current QPL Agreed to keep applicability open and not weighting for presence of boiler-based systems – Current approach is to use average savings regardless of pan count Clear cost difference between pan capacity Agreed to split up by pan capacity using incremental cost of each pan – Percentage of time in constant steam mode has little supporting field data information 90% for baseline, 0% for efficient case Recommend keeping estimate based on conversations with FSTC over baseline equipment operating in nearly constant steam mode