1 analysis of two-tiered deemed savings values for energy star clothes washers february 10, 2004
TRANSCRIPT
1
Analysis of Two-Tiered Deemed Savings Values for Energy Star
Clothes Washers
February 10, 2004
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Issue Summary
• Northwest Energy Efficiency Alliance is deploying an Energy Star marketing program that provides “two-tiered” incentives– MEF < 1.6– MEF =>1.6
• Existing Deemed Savings Analysis provides “single tier”
• Existing deemed savings calculator provides model specific savings
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Alliance Request RTF Consider Establishing “Two Tiered” Deemed Values
• Available Data– Market sales data (brand & model) from last years
“Double Your Savings” campaign– Energy Star data on MEF and Water Factors
• Approach– Estimate “sales weighted” MEF and Water Factors
for each tier– Use each tier’s values as basis for savings (water and
electric)
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Distribution of MEF from “Double Your Savings” Rebate Reports
0%
2%
4%
6%
8%
10%
Shar
e of
Sal
es
1.3 1.4 1.5 1.6 1.7 1.9
MEF
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Distribution of WF from “Double Your Savings” Rebate Reports
0%
2%
4%
6%
8%
10%
Shar
e of
Sal
es
4 4 6 7 8 8 9 9 11
Water Factor (gals/cycle)
Summary Statistics on MEF
Statistic ALL MEF 1.26 - 1.59 MEF => 1.60
Number of Washers
12,978 5,442 7,536
Simple Average
1.61 1.40 1.79
Median
1.61 1.44 1.73
Mode
1.29 1.29 1.68
Weighted Mean
1.65 1.48 1.77
Summary Statistics on WF
Statistic ALL MEF 1.26 – 1.59 MEF => 1.60
Number of Washers 12,894 5,366 7,528
Mean 7.63 9.14 6.43
Median 8.03 9.14 5.93
Mode 9.44 9.44 4.36
Weighted Average 7.21 8.86 6.03
Proposed Deemed Savings by MEF/WF Tier
MeasureEnergy Star MEF kWh/Savings Credit
Existing Deemed Value 1.61 310
$155 FY04
$102 FY05
Tier 1 1.48 251
$134 FY04
$81 FY05
Tier 2 1.77 368
$173 FY04
$120 FY05