Northwest Power and ConservationCouncil

Preliminary Preliminary Cost-EffectivenessCost-Effectiveness

Energy Star Tier 2 VendingEnergy Star Tier 2 Vending

Regional Technical ForumRegional Technical Forum

19 September 200619 September 2006

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Northwest Power and ConservationCouncil

Preliminary Cost-EffectivenessPreliminary Cost-EffectivenessAssumptionsAssumptions

Tier 1 is baseline for new & refurbTier 1 is baseline for new & refurb 12 year machine life12 year machine life 6 year remaining life for existing machines6 year remaining life for existing machines Refurbs every 6 years Refurbs every 6 years Life after refurb is 6 yearsLife after refurb is 6 years Machine savings shaped like residential refrigeratorMachine savings shaped like residential refrigerator Off-hour control savings shaped like Vending Off-hour control savings shaped like Vending

MiserMiser

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Northwest Power and ConservationCouncil

Preliminary Cost-EffectivenessPreliminary Cost-EffectivenessCases to ConsiderCases to Consider

New Machine: New Site or Replace

Existing Machine at End of Life

Early Replacement:Early Replacement with

New Tier 2 Machine

Refurb:Refurbish Existing with

Tier 2 Kit

Savings – T1 minus T2 for 12 years

Savings – Add 400 kWh/year with controls enabled

Savings – Exist minus T2 for 6 years plus T1 minus T2 for remaining 6 years

Savings – Add 400 kWh/year with controls enabled

Savings – Exist minus T2 for 3 years plus T1 minus T2 for 3 years

Savings – Add 400 kWh/year with controls enabled

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Northwest Power and ConservationCouncil

Savings AssumptionsSavings Assumptions

MeasureMeasure Savings (kWh/year)Savings (kWh/year)

Existing Machine to Tier 1Existing Machine to Tier 1 13001300

Existing Machine to Tier 2Existing Machine to Tier 2 17401740

Tier 1 Machine to Tier 2Tier 1 Machine to Tier 2 440440

Tier 1 Machine to Tier 2 Tier 1 Machine to Tier 2 Refurb KitRefurb Kit

545545

Enable Off-hour controls Enable Off-hour controls on Tier 2 machineon Tier 2 machine

400400

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Northwest Power and ConservationCouncil

Cost AssumptionsCost Assumptions

MeasureMeasure Incremental CostIncremental Cost

Tier 2 New Glass FrontTier 2 New Glass Front $170$170

Tier 2 New Stack VendorTier 2 New Stack Vendor $50$50

Tier 2 Refurb Kit Tier 2 Refurb Kit $200$200

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Northwest Power and ConservationCouncil

Results – New MachinesResults – New Machines

MeasureMeasure B/C B/C RatioRatio

New Machine - Stack Vendor - Tier 1 to Tier 2 UpgradeNew Machine - Stack Vendor - Tier 1 to Tier 2 Upgrade 3.83.8

New Machine - Stack Vendor - Tier 1 to Tier 2 Upgrade - New Machine - Stack Vendor - Tier 1 to Tier 2 Upgrade - With Off-Hour ControlsWith Off-Hour Controls

7.07.0

New Machine - Glass Front - Tier 1 to Tier 2 UpgradeNew Machine - Glass Front - Tier 1 to Tier 2 Upgrade 1.11.1

New Machine - Glass Front - Tier 1 to Tier 2 Upgrade - With New Machine - Glass Front - Tier 1 to Tier 2 Upgrade - With Off-Hour ControlsOff-Hour Controls

2.12.1

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Northwest Power and ConservationCouncil

Results – Early Replacements Results – Early Replacements with New Machineswith New Machines

MeasureMeasure B/C B/C RatioRatio

Existing Machine - Stack Vendor - Early Replacement to Tier 2Existing Machine - Stack Vendor - Early Replacement to Tier 2 15.015.0

Existing Machine - Stack Vendor - Early Replacement to Tier 2 Existing Machine - Stack Vendor - Early Replacement to Tier 2 - With Off-Hour Controls- With Off-Hour Controls

18.218.2

Existing Machine - Glass Front - Early Replacement to Tier 2Existing Machine - Glass Front - Early Replacement to Tier 2 4.44.4

Existing Machine - Glass Front - Early Replacement to Tier 2 - Existing Machine - Glass Front - Early Replacement to Tier 2 - With Off-Hour ControlsWith Off-Hour Controls

5.45.4

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Northwest Power and ConservationCouncil

Results – RefurbsResults – Refurbs

MeasureMeasure B/C B/C RatioRatio

Existing Machine - Stack Vendor - Early Refurb to Tier 2Existing Machine - Stack Vendor - Early Refurb to Tier 2 2.32.3

Existing Machine - Stack Vendor - Early Refurb to Tier 2 - Existing Machine - Stack Vendor - Early Refurb to Tier 2 - With Off-Hour ControlsWith Off-Hour Controls

2.72.7

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Northwest Power and ConservationCouncil

Total Savings PotentialTotal Savings Potential

About 1 MWa per 4000 MachinesAbout 1 MWa per 4000 Machines– New 10%New 10%– Early Replacement 40%Early Replacement 40%– Refurbish 50%Refurbish 50%– Half with controls enabledHalf with controls enabled

PNW Market PNW Market – ~4000 New machines per year~4000 New machines per year– ~120,000 Existing machines~120,000 Existing machines