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Today’s “Game Plan”

Today’s “Game Plan”. Two Trial-Runs of a new deemed measure review process Deemed measure analysis and review Developed by … (consultant, RTF member/staff, utility, etc.) Reviewed in detail by RTF subcommittee Until comfort level is high

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Today’s “Game Plan”

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  1. Today’s “Game Plan” • Two Trial-Runs of a new deemed measure review process • Deemed measure analysis and review • Developed by … • (consultant, RTF member/staff, utility, etc.) • Reviewed in detail by RTF subcommittee • Until comfort level is high • RTF Staff* gives a summary presentation to the full RTF • Summary of subcommittee review • Including details of any follow-up that hasn’t been fully vetted by the subcommittee • Summary of the measure analysis • Energy savings analysis presented using the (draft) measure summary template • Measure Cost, Measure Life, O&M, etc. • The Goals • Improve and add consistency to the deemed measure review process • Spend less time “in the weeds” at RTF meetings *with support from both the subcommittee and the measure analysis developer

  2. LED Lighting in Vertical and Semi-Vertical Open Display Cases Deemed Measure Proposal Regional Technical Forum September 28, 2010

  3. Measure Description • Measures • Existing Cases • Remove T8, T10, or T12 Fixtures and Ballasts, install LED fixtures and drivers • 1-lamp Fluorescent fixture  1 Low-power LED fixture • 2-lamp Fluorescent fixture  1 High-power LED fixture • 3-lamp Fluorescent fixture  1 High-power LED fixture + “delamp” measure • New Cases • Choose LED fixtures instead of T8 fixtures • 1 Low-power LED fixture (baseline = 1-lamp T8 fixture) • 1 High-power LED fixture (baseline = 2-lamp T8 fixture) • Savings • Reduced energy use of lighting system • Reduced load on the refrigeration system • Requirements • This measure only applies to open vertical or semi-vertical display cases. • (does not apply to coffin cases) • Fluorescent fixture and ballast must be replaced with a permanently installed LED fixture and driver • LED ratings: Minimum CRI of 75; minimum of 7% of initial lumens at 50k hours. • Minimum 3-year manufacturer’s warranty. • Delamp measure must be combined with an LED retrofit measure • Baseline controls, or better, must be used

  4. Subcommittee Review • Meeting held September 2, 2010 (meeting notes available at: http://www.nwcouncil.org/rtf/subcommittees/grocery/meetings/meetings.htm ) • Attendees • PECI: Lagan Todd, Jen Shafter, Dustin Bailey, Ben Cartwright, Paul Schertz, Ben Wright, Michele Friedrich • RTF/Other: DiwanshuShekhar, Charlie Grist, Eric Brateng, Tim Steele, Adam Hadley, David Baylon • Meeting Summary: • PECI generated the analysis and presented its proposal to the subcommittee • The group reviewed key input parameters and supporting data sources in detail • Conclusion: PECI’s savings calculation approach and input assumptions are reasonable. The only follow-up needed is review of the assumption on number of ballasts per lamp. • Meeting Follow-up (not reviewed by subcommittee): • Ballasts/drivers per lamp is not addressed directly. The calculation determines energy use of the ballast/driver based on a fixed percentage of the lamp power draw.

  5. Cost, O&M Savings, and Measure Life • Cost Based On • Distributor Pricing, Marked-up 25% • 4-foot Fixture • High Power = $119.57 • Low Power = $93.08 • Driver (per fixture) = $28.13 • (assumes 2 fixtures per driver) • Hardware (per fixture) = $1.63 • Labor @ $25 per fixture • (not applicable to new cases) • O&M Savings Based On • LED Reports (no lamp replacement costs) • PG&E Application Assessment #0722 • SMUD Report: LED Freezer Case Lighting Systems • Measure Life Based On • ~50,000 hour life @ ~24 hours per day

  6. Proposed Deemed Measures Incremental Capital and O&M Costs and Annual Savings @ Site are per linear foot of fixture. DECISION?

  7. Evaporator Fan Motor Controller (ECM)for Walk-in Coolers and Freezers Deemed Measure Proposal Regional Technical Forum September 28, 2010

  8. Measure Description • Standard Practice: • Evaporator fans run continuously • Except during the defrost cycle in freezers • Measure • Install a controller to reduce the speed or turn off of the evaporator fan motors when there’s no call for cooling • Savings • Reduced energy use of the slower/off motor • Reduced load on the refrigeration system • Requirements • This measure only applies where • the evaporator fan motor is an ECM • the evaporator is on a circuit with a liquid line solenoid • motors have rated (nameplate) output power capacity of at least 16W • Controller must reduce motor speed to not more than 600 RPM when there is no call for cooling. • If the fan motors are cycled on/off, there must be a provision to prevent stratification.

  9. Subcommittee Review • Meeting held September 2, 2010 (meeting notes available at: http://www.nwcouncil.org/rtf/subcommittees/grocery/meetings/meetings.htm ) • Attendees • PECI: Lagan Todd, Jen Shafter, Dustin Bailey, Ben Cartwright, Paul Schertz, Ben Wright, Michele Friedrich, Jamie Anthony • RTF/Other: DiwanshuShekhar, Charlie Grist, Eric Brateng, Tim Steele, Adam Hadley, David Baylon • Meeting Summary: • PECI generated the analysis and presented its proposal to the subcommittee • The group reviewed key input parameters and supporting data sources in detail • Conclusion: PECI’s savings calculation approach is reasonable. With a few revisions to input assumptions, this measure could be deemed.

  10. Subcommittee Meeting Follow-up PECI’s follow-up was emailed to the Subcommittee on Sept 16th • Measures are now disaggregated by motor size and case temperature • (previously, one weighted savings value was proposed) • Refrigeration system savings make up: • 27% of the total savings for Medium Temp • 47% of the total savings for Low Temp • Recommend the following assumptions based on a field study of condenser/compressor runtimes of 5 LT and 7 MT walk-ins • Low Temp • Evaporator Fan at Full Speed: 68% • Evaporator Fan at Low Speed: 32% • Medium Temp • Evaporator Fan at Full Speed: 58% • Evaporator Fan at Low Speed: 42% • Recommend using 2.5 for the exponent in the fan law calculation • (savings more conservative than when using 2.7) • Allow on/off type controllers. • Savings are only slightly lower (~5%) than full speed/low speed type controllers • 1 minute on / 7 minutes off assumed as the control strategy for on/off type controller • EER values based on PECI’s extensive audit data, filtered for eligible applications (nearly 8000 systems)

  11. Metered(!) Data on ECM Power(the following was not reviewed by the subcommittee) • Source: BPA/EMP2 M&V Studies • Frank, David. EMP2. "Markus Foods M&V Findings: Anti-Sweat Heater Control and ECM Motors." January 2009 • Frank, David. EMP2. "Grocery Store M&V: Grocery Store B." For BPA. Jan 29, 2010. • Frank, David. EMP2. "Grocery Store M&V: Grocery Store C." For BPA. January 29, 2010. • Amundson, Todd. BPA. "Pacific PUD Four Grocery Stores with Vendor Grovery Energy Management System." October 31, 2006.

  12. Note: Most (if not all) motors were model ME-59. All reports did not specify whether some were ME-30 (or ME-25).

  13. Proposed Input Power Assumptions • 1/20 to 1/10 hp Motor Class • Input Power = 50 watts • Based on median from metered data • 16 to 23 Watt Motor Class • Input Power = 19.6 watts • Based on applying the ratio of metered-to-estimated from the large motor class to the estimated input watts for the small motor class. • Original motor input estimates were based on the output watts (assumed the middle of the range), divided by an assumed motor efficiency of 66%

  14. Cost & Measure Life Cost: $141 / motor • Installed Cost: $565 • Controller (Frigitek, Retail): $325 / controller • Labor: 3 hrs/controller @ $80/hr = $240 / controller • 4 motors/controller • On average, > 4 motors per controller Measure Life: 15 years Note: Costs are shown in year 2010 dollars.

  15. Proposed Deemed Measures Incremental Capital Cost and Annual Savings @ Site are per motor. Note: Costs are shown in year 2006 dollars.

  16. Issue: Cost-effectiveness depends on # motors per controller Alternative RTF Staff Proposal • Further disaggregation of the measure: • Large Motor Class (1/10 to 1/20 HP) • 3 or more motors controlled per controller • Average of 5.8 motors per controller • 1 or 2 motor per controller • Average of 1.8 motors per controller • Small Motor Class (16 to 23 watts) • 6 or more motors controlled per controller • Average of 8.2 motors per controller • 1 to 5 motors controlled per controller • Average of 2.8 motors per controller Note: This issue and proposal was not reviewed at the subcommittee meeting.

  17. Data Source: PECI

  18. Alternative (RTF Staff) Proposed Measures Incremental Capital Cost and Annual Savings @ Site are per motor. • Provisionally Deemed: • 18 month sunset period • Data Collection Should Include: • Metered ECMotor power input • Metered ECMotor Runtimes • Full Speed • Off/Low Speed DECISION?

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