Preliminary CostEffectiveness Energy Star Tier 2 Vending

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Preliminary Cost-EffectivenessEnergy Star Tier
2 Vending

• Regional Technical Forum
• 19 September 2006

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Preliminary Cost-EffectivenessAssumptions

• Tier 1 is baseline for new refurb
• 12 year machine life
• 6 year remaining life for existing machines
• Refurbs every 6 years
• Life after refurb is 6 years
• Machine savings shaped like residential
  refrigerator
• Off-hour control savings shaped like Vending
  Miser

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Preliminary Cost-EffectivenessCases to Consider
New Machine New Site or Replace Existing
Machine at End of Life
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
Early Replacement Early Replacement with New
Tier 2 Machine
Savings Add 400 kWh/year with controls enabled
Refurb Refurbish Existing with Tier 2 Kit
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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Savings Assumptions
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Cost Assumptions
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Results New Machines
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Results Early Replacements with New Machines
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Results Refurbs
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Total Savings Potential

• About 1 MWa per 4000 Machines
• New 10
• Early Replacement 40
• Refurbish 50
• Half with controls enabled
• PNW Market
• 4000 New machines per year
• 120,000 Existing machines