8B-i

APPENDIX 8B. SUPPLEMENTARY LIFE-CYCLE COST AND PAYBACK 

PERIOD RESULTS 

TABLE OF CONTENTS 

8B.1 INTRODUCTION ..........................................................................................................B-1

8B.2 INTRODUCTION TO UNCERTAINTY AND VARIABILITY ..................................B-1

8B.3 UNCERTAINTY ............................................................................................................B-2

8B.4 VARIABILITY ...............................................................................................................B-2

8B.5 APPROACHES TO UNCERTAINTY AND VARIABILITY ......................................B-2

8B.6 PROBABILITY ANALYSIS AND THE USE OF CRYSTAL BALL ..........................B-3

8B.7 HIGH-SAVINGS AND LOW-SAVINGS SCENARIOS ..............................................B-5

B.7.1 Manufacturer Selling Price Adjustments for High-Savings and LowSavings Scenarios ............................................................................................B-5

B.7.2 Product Lifetime Adjustments for High-Savings and Low-Savings 

Scenarios ..........................................................................................................B-7

B.7.3 Usage Profile Adjustments for High-Savings and Low-Savings 

Scenarios ..........................................................................................................B-8

B.7.4 Loading Point Adjustments for High-Savings and Low-Savings 

Scenarios ........................................................................................................B-11

B.7.5 Life-Cycle Cost and Payback Period Results for External Power 

Supplies in the High-Savings Scenario ..........................................................B-12

B.7.6 Life-Cycle Cost and Payback Period Results for External Power 

Supplies in the Low-Savings Scenario ..........................................................B-14

B.7.7 Life-Cycle Cost and Payback Period Results for Battery Chargers in the 

High-Savings Scenario ...................................................................................B-15

B.7.8 Life-Cycle Cost and Payback Period Results for Battery Chargers in the 

Low-Savings Scenario ...................................................................................B-18

8B.8 LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS FOR THE 

COMMERCIAL SECTOR .....................................................................................B-20

B.8.1 Class A External Power Supply Results for the Commercial Sector .............B-21

B.8.2 Battery Charger Results for the Commercial Sector ......................................B-22

8B.9 LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS USING 

ALTERNATIVE ENERGY PRICE SCENARIOS ................................................B-26

B.9.1 Class A External Power Supply Results Using Alternative Energy Price 

Scenarios ........................................................................................................B-27

B.9.1.1 Class A External Power Supply Results Using AEO 2010 HighGrowth Price Scenario ............................................................. B-27

B.9.1.2 Class A External Power Supply Results Using AEO 2010 LowGrowth Price Scenario ............................................................. B-28

B.9.1.3 Class A External Power Supply Results Using Carbon Cap and 

Trade Price Scenario ................................................................ B-30

B.9.2 Battery Charger Results Using Alternative Energy Price Scenarios .............B-32

B.9.2.1 Battery Charger Results Using AEO 2010 High-Growth Price 

Scenario .................................................................................... B-32

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B.9.2.2 Battery Charger Results Using AEO 2010 Low-Growth Price 

Scenario .................................................................................... B-35

B.9.2.3 Battery Charger Results Using Carbon Cap and Trade 

Price Scenario ................................................................... B-38

LIST OF TABLES 

TABLE 8B.7.1 MANUFACTURER SELLING PRICE ADJUSTMENTS FOR 

EXTERNAL POWER SUPPLIES HIGH- AND LOW-SAVINGS 

SCENARIOS ...............................................................................................8B-6

TABLE 8B.7.2 MANUFACTURER SELLING PRICE ADJUSTMENTS FOR 

BATTERY CHARGERS HIGH- AND LOW-SAVINGS 

SCENARIOS ...............................................................................................8B-7

TABLE 8B.7.3 LIFETIME ADJUSTMENTS FOR CLASS A EPS HIGH- AND LOWSAVINGS SCENARIOS .............................................................................8B-8

TABLE 8B.7.4 LIFETIME ADJUSTMENTS FOR BC HIGH- AND LOW-SAVINGS 

SCENARIOS ...............................................................................................8B-8

TABLE 8B.7.5 USAGE PROFILE ADJUSTMENTS FOR EPS HIGH- AND LOWSAVINGS SCENARIOS ...........................................................................8B-10

TABLE 8B.7.6 USAGE PROFILE ADJUSTMENTS FOR BC HIGH- AND LOWSAVINGS SCENARIOS ...........................................................................8B-10

TABLE 8B.7.7 2.5W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

HIGH-SAVINGS SCENARIO ..................................................................8B-12

TABLE 8B.7.8 18W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

HIGH-SAVINGS SCENARIO ..................................................................8B-13

TABLE 8B.7.9 60W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

HIGH-SAVINGS SCENARIO ..................................................................8B-13

TABLE 8B.7.10 120W EXTERNAL POWER SUPPLIES (MANUFACTURER 

DATA), HIGH-SAVINGS SCENARIO ...................................................8B-13

TABLE 8B.7.11 2.5W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

LOW-SAVINGS SCENARIO ...................................................................8B-14

TABLE 8B.7.12 18W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

LOW-SAVINGS SCENARIO ...................................................................8B-14

TABLE 8B.7.13 60W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

LOW-SAVINGS SCENARIO ...................................................................8B-14

TABLE 8B.7.14 120W EXTERNAL POWER SUPPLIES (MANUFACTURER 

DATA), LOW-SAVINGS SCENARIO ....................................................8B-15

TABLE 8B.7.15 LOW ENERGY, INDUCTIVE BATTERY CHARGERS 

(MANUFACTURER DATA), HIGH-SAVINGS SCENARIO ................8B-15

TABLE 8B.7.16 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), HIGH-SAVINGS SCENARIO ................8B-15

TABLE 8B.7.17 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), HIGH-SAVINGS SCENARIO................8B-16

TABLE 8B.7.18 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), HIGH-SAVINGS SCENARIO ................8B-16

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TABLE 8B.7.19 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), HIGH-SAVINGS SCENARIO................8B-16

TABLE 8B.7.20 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), HIGH-SAVINGS SCENARIO ................8B-16

TABLE 8B.7.21 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), HIGH-SAVINGS SCENARIO................8B-17

TABLE 8B.7.22 HIGH ENERGY BATTERY CHARGERS (MANUFACTURER 

DATA), HIGH-SAVINGS SCENARIO ...................................................8B-17

TABLE 8B.7.23 LOW ENERGY, AC OUT BATTERY CHARGERS 

(MANUFACTURER DATA), HIGH-SAVINGS SCENARIO ................8B-17

TABLE 8B.7.24 LOW ENERGY, AC OUT BATTERY CHARGERS 

(TEST/TEARDOWN DATA), HIGH-SAVINGS SCENARIO................8B-17

TABLE 8B.7.25 LOW ENERGY, INDUCTIVE BATTERY CHARGERS 

(MANUFACTURER DATA), LOW-SAVINGS SCENARIO .................8B-18

TABLE 8B.7.26 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), LOW-SAVINGS SCENARIO .................8B-18

TABLE 8B.7.27 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), LOW-SAVINGS SCENARIO ................8B-18

TABLE 8B.7.28 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), LOW-SAVINGS SCENARIO .................8B-19

TABLE 8B.7.29 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), LOW-SAVINGS SCENARIO ................8B-19

TABLE 8B.7.30 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), LOW-SAVINGS SCENARIO .................8B-19

TABLE 8B.7.31 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), LOW-SAVINGS SCENARIO ................8B-19

TABLE 8B.7.32 HIGH ENERGY BATTERY CHARGERS (MANUFACTURER 

DATA), LOW-SAVINGS SCENARIO ....................................................8B-20

TABLE 8B.7.33 LOW ENERGY, AC OUT BATTERY CHARGERS 

(MANUFACTURER DATA), LOW-SAVINGS SCENARIO .................8B-20

TABLE 8B.7.34 LOW ENERGY, AC OUT BATTERY CHARGERS 

(TEST/TEARDOWN DATA), LOW-SAVINGS SCENARIO ................8B-20

TABLE 8B.8.1 2.5W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

COMMERCIAL SECTOR ........................................................................8B-21

TABLE 8B.8.2 18W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

COMMERCIAL SECTOR ........................................................................8B-21

TABLE 8B.8.3 60W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

COMMERCIAL SECTOR ........................................................................8B-22

TABLE 8B.8.4 120W EXTERNAL POWER SUPPLIES (MANUFACTURER DATA), 

COMMERCIAL SECTOR ........................................................................8B-22

TABLE 8B.8.5 LOW ENERGY, INDUCTIVE BATTERY CHARGERS 

(MANUFACTURER DATA), COMMERCIAL SECTOR ......................8B-23

TABLE 8B.8.6 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), COMMERCIAL SECTOR ......................8B-23

TABLE 8B.8.7 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), COMMERCIAL SECTOR ......................8B-23

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TABLE 8B.8.8 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), COMMERCIAL SECTOR ......................8B-24

TABLE 8B.8.9 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), COMMERCIAL SECTOR ......................8B-24

TABLE 8B.8.10 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), COMMERCIAL SECTOR ......................8B-24

TABLE 8B.8.11 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), COMMERCIAL SECTOR ......................8B-25

TABLE 8B.8.12 HIGH ENERGY BATTERY CHARGERS (MANUFACTURER 

DATA), COMMERCIAL SECTOR ..........................................................8B-25

TABLE 8B.8.13 LOW ENERGY, AC OUT BATTERY CHARGERS 

(MANUFACTURER DATA), COMMERCIAL SECTOR ......................8B-25

TABLE 8B.8.14 LOW ENERGY, AC OUT BATTERY CHARGERS 

(TEST/TEARDOWN DATA), COMMERCIAL SECTOR ......................8B-26

TABLE 8B.9.1 2.5W EXTERNAL POWER SUPPLIES, AEO 2010 HIGH-GROWTH .....8B-27

TABLE 8B.9.2 18W EXTERNAL POWER SUPPLIES, AEO 2010 HIGH-GROWTH ......8B-27

TABLE 8B.9.3 60W EXTERNAL POWER SUPPLIES, AEO 2010 HIGH-GROWTH ......8B-28

TABLE 8B.9.4 120W EXTERNAL POWER SUPPLIES, AEO 2010 HIGH-GROWTH ....8B-28

TABLE 8B.9.5 2.5W EXTERNAL POWER SUPPLIES, AEO 2010 LOW-GROWTH ......8B-29

TABLE 8B.9.6 18W EXTERNAL POWER SUPPLIES, AEO 2010 LOW-GROWTH .......8B-29

TABLE 8B.9.7 60W EXTERNAL POWER SUPPLIES, AEO 2010 LOW-GROWTH .......8B-29

TABLE 8B.9.8 120W EXTERNAL POWER SUPPLIES, AEO 2010 LOW-GROWTH .....8B-30

TABLE 8B.9.9 2.5W EXTERNAL POWER SUPPLIES, CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-30

TABLE 8B.9.10 18W EXTERNAL POWER SUPPLIES, CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-31

TABLE 8B.9.11 60W EXTERNAL POWER SUPPLIES, CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-31

TABLE 8B.9.12 120W EXTERNAL POWER SUPPLIES, CARBON CAP AND 

TRADE SCENARIO .................................................................................8B-31

TABLE 8B.9.13 LOW ENERGY, INDUCTIVE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 HIGH-GROWTH ...................8B-32

TABLE 8B.9.14 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 HIGH-GROWTH ...................8B-32

TABLE 8B.9.15 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 HIGH-GROWTH ..................8B-33

TABLE 8B.9.16 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 HIGH-GROWTH ...................8B-33

TABLE 8B.9.17 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 HIGH-GROWTH ..................8B-33

TABLE 8B.9.18 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 HIGH-GROWTH ...................8B-34

TABLE 8B.9.19 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 HIGH-GROWTH ..................8B-34

TABLE 8B.9.20 HIGH ENERGY BATTERY CHARGERS (MANUFACTURER 

DATA), AEO 2010 HIGH-GROWTH ......................................................8B-34

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TABLE 8B.9.21 LOW ENERGY, AC OUT BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 HIGH-GROWTH ...................8B-35

TABLE 8B.9.22 LOW ENERGY, AC OUT BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 HIGH-GROWTH ..................8B-35

TABLE 8B.9.23 LOW ENERGY, INDUCTIVE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 LOW-GROWTH ...................8B-35

TABLE 8B.9.24 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 LOW-GROWTH ...................8B-36

TABLE 8B.9.25 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 LOW-GROWTH ...................8B-36

TABLE 8B.9.26 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 LOW-GROWTH ...................8B-36

TABLE 8B.9.27 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 LOW-GROWTH ...................8B-37

TABLE 8B.9.28 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 LOW-GROWTH ...................8B-37

TABLE 8B.9.29 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 LOW-GROWTH ...................8B-37

TABLE 8B.9.30 HIGH ENERGY BATTERY CHARGERS (MANUFACTURER 

DATA), AEO 2010 LOW-GROWTH .......................................................8B-38

TABLE 8B.9.31 LOW ENERGY, AC OUT BATTERY CHARGERS 

(MANUFACTURER DATA), AEO 2010 LOW-GROWTH ...................8B-38

TABLE 8B.9.32 LOW ENERGY, AC OUT BATTERY CHARGERS 

(TEST/TEARDOWN DATA), AEO 2010 LOW-GROWTH ...................8B-38

TABLE 8B.9.33 LOW ENERGY, INDUCTIVE BATTERY CHARGERS 

(MANUFACTURER DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-39

TABLE 8B.9.34 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-39

TABLE 8B.9.35 LOW ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), CARBON CAP AND TRADE 

SCENARIO) ..............................................................................................8B-39

TABLE 8B.9.36 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-40

TABLE 8B.9.37 LOW ENERGY, HIGH VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-40

TABLE 8B.9.38 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(MANUFACTURER DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-40

TABLE 8B.9.39 MEDIUM ENERGY, LOW VOLTAGE BATTERY CHARGERS 

(TEST/TEARDOWN DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-41

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TABLE 8B.9.40 HIGH ENERGY BATTERY CHARGERS (MANUFACTURER 

DATA), CARBON CAP AND TRADE SCENARIO ...............................8B-41

TABLE 8B.9.41 LOW ENERGY, AC OUT BATTERY CHARGERS 

(MANUFACTURER DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-41

TABLE 8B.9.42 LOW ENERGY, AC OUT BATTERY CHARGERS 

(TEST/TEARDOWN DATA), CARBON CAP AND TRADE 

SCENARIO................................................................................................8B-42

LIST OF FIGURES 

FIGURE 8B.7.1.1 UNIFORM PROBABILITY DISTRIBUTION..........................................8B-4

FIGURE 8B.7.1.2 TRIANGULAR PROBABILITY DISTRIBUTION ..................................8B-4

FIGURE 8B.7.1.3 NORMAL PROBABILITY DISTRIBUTION ...........................................8B-4

FIGURE 8B.8.2.1 RESIDENTIAL ELECTRICITY PRICE FORECAST ............................8B-26

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APPENDIX 8B. SUPPLEMENTARY LIFE-CYCLE COST AND PAYBACK 

PERIOD RESULTS 

8B.1 INTRODUCTION 

 This appendix discusses uncertainty and variability analyses and presents results for 

various input scenarios other than the reference case scenario presented in chapter 8. Results for 

the reference case of the life-cycle cost (LCC) and payback period (PBP) analysis using a 

distribution of unit energy consumption amounts, discount rates, sales tax, and electricity prices 

are presented in chapter 8. The average LCC savings for non-reference scenarios at each 

efficiency level (EL) for each battery charger (BC) and external power supply (EPS) design are 

presented in this appendix. DOE also presents the median PBP because it is the most statistically 

robust measure of the PBP. 

 

 This appendix presents the LCC and PBP analysis results for high-savings and lowsavings scenarios based on sensitivities of the reference case inputs. Additionally, this appendix 

presents LCC and PBP results using high- and low-economic-growth electricity price trends, as 

well as electricity price trends based on a carbon cap and trade scenario. These datasets were 

generated using the Energy Information Administration’s (EIA’s) Annual Energy Outlook 2010 

Early Release (AEO2010) and the S.2191 report accompanying the Lieberman-Warner Climate 

Security Act of 2007 (S2191), respectively. Finally, the appendix presents results for the 

commercial sector, using commercial discount rates and electricity prices. 

8B.2 INTRODUCTION TO UNCERTAINTY AND VARIABILITY

 Analysis of an energy-efficiency standard involves calculations of impacts, for example, 

the impact of a standard on consumer LCC. In order to perform the calculation, the analyst must 

first: 1) specify the equation or model that will be used; 2) define the quantities in the equation; 

and 3) provide numerical values for each quantity. In the simplest case, the equation is 

unambiguous (contains all relevant quantities and no others), each quantity has a single 

numerical value, and the calculation results in a single value. However, certainty and precision 

are rarely the case. In almost all cases, the model and/or the numerical values for each quantity 

in the model are not completely known (i.e., there is uncertainty) or the model and/or the 

numerical values for each quantity in the model depend upon other conditions (i.e., there is 

variability). 

 Thorough analysis involves accounting for uncertainty and variability. While the 

simplest analysis involves a single numerical value for each quantity in a calculation, arguments 

can arise about what the appropriate value is for each quantity. Explicit analysis of uncertainty 

and variability is intended to provide more complete information to the decision-making process. 

EERE-2008-BT-STD-0005 COMMENT 31
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8B.3 UNCERTAINTY

 When making observations of past events or speculating about the future, imperfect 

knowledge is the rule rather than the exception. For example, the energy actually consumed by a 

particular appliance type (such as the average BC or EPS) is not directly recorded, but rather 

estimated based upon available information. Even direct laboratory measurements have some 

margin of error. When estimating numerical values expected for quantities at some future date, 

the exact outcome is rarely known in advance. 

8B.4 VARIABILITY 

 Variability means that different applications or situations produce different numerical 

values when calculating a quantity. Specifying an exact value for a quantity may be difficult 

because the value depends on something else. For example, the amount of energy a 

representative unit consumes depends upon the specific circumstances and behaviors of the 

consumer who is operating it and which application the unit is powering (e.g., how frequently the 

product is used, the duration of use, etc.). Variability makes specifying an appropriate 

population value more difficult in as much as any one value may not be representative of the 

entire population. Surveys can be helpful here, and analysis of surveys can relate the variable of 

interest (e.g., unit energy consumption) to other variables that are better known or easier to 

forecast (e.g., duration of typical use for typical applications).

8B.5 APPROACHES TO UNCERTAINTY AND VARIABILITY 

 This section describes two approaches to uncertainty and variability: 

1. scenario analysis, and 

2. probability analysis. 

 Scenario analysis uses a single numerical value for each quantity in a calculation, then 

changes one (or more) of the numerical values and repeats the calculation. A number of 

calculations are done, which provide some indication of the extent to which the result depends 

upon the assumptions. For example, the life-cycle cost of a BC or EPS could be calculated for 

energy rates of 2, 8, and 14¢ per kWh. 

 The advantages of scenario analysis are that each calculation is simple; a range of 

estimates is used; and crossover points can be identified. (An example of a crossover point is the 

energy rate above which the life-cycle cost is reduced, holding all other inputs constant. That is, 

the crossover point is the energy rate at which the consumer achieves savings in operating 

expense that more than compensate for the increased purchase expense). The disadvantage of 

scenario analysis is that there is no information about the likelihood of each scenario. 

 Probability analysis considers the probabilities within a range of values. For quantities 

with variability (e.g., electricity rates of different consumers), surveys can be used to generate a 

frequency distribution of numerical values (e.g., the number of households with electricity rates 

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at particular levels) to estimate the probability of each value. For quantities with uncertainty, 

statistical or subjective measures can be used to provide probabilities (e.g., manufacturing cost to 

improve energy efficiency to some level may be estimated to be $10 ± $3). 

The major disadvantage of the probability approach is that it requires more information, 

namely information about the shapes and magnitudes of the variability and uncertainty of each 

quantity. The advantage of the probability approach is that it provides greater information about 

the outcome of the calculations, that is, it provides the probability that the outcome will be in a 

particular range. 

 Scenario and probability analysis provide some indication of the robustness of the policy 

given the uncertainties and variability. A policy is robust when the impacts are acceptable over a 

wide range of possible conditions. 

8B.6 PROBABILITY ANALYSIS AND THE USE OF CRYSTAL BALL 

 To quantify the uncertainty and variability that exist in inputs to the LCC and payback 

period analyses, DOE used Microsoft Excel spreadsheets combined with Crystal Ball®, a 

commercially available add-in, to conduct probability analyses. The probability analyses used 

Monte Carlo simulation and probability distributions. 

 Simulation refers to any analytical method meant to imitate a real-life system, especially 

when other analyses are too mathematically complex or too difficult to reproduce. Without the 

aid of simulation, a spreadsheet model will only reveal a single outcome, generally the most 

likely or average scenario. Spreadsheet risk analysis uses both a spreadsheet model and 

simulation to automatically analyze the effect of varying inputs on outputs of the modeled 

system. One type of spreadsheet simulation is Monte Carlo simulation, which randomly 

generates values for uncertain variables again and again to simulate a system. Monte Carlo 

simulation was named for Monte Carlo, Monaco, where the primary attractions are casinos 

containing games of chance. Games of chance, such as roulette wheels, dice, and slot machines, 

exhibit random behavior. The random behavior in games of chance is similar to how Monte 

Carlo simulation utilizes variable values at random to simulate a model. For example, one knows 

that a rolled die will present a 1, 2, 3, 4, 5, or 6 after coming to rest, but one does not know 

which value will be presented on any particular roll. It is the same with the variables that have a 

known range of values but an uncertain value for any particular time or event (e.g., electricity 

prices and discount rate). 

 For each uncertain variable (one that has a range of possible values), possible values are 

defined with a probability distribution. The type of distribution selected is based on the 

conditions surrounding that variable. Probability distribution types include: 

 

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 During a simulation, multiple scenarios of a model are calculated by repeatedly sampling 

values from the probability distributions for the uncertain variables and using those values in the 

simulation. Crystal Ball simulations can consist of as many trials (or scenarios) as desired—

hundreds or even thousands. During a single trial, Crystal Ball randomly selects a value from the 

defined possibilities (the range and shape of the probability distribution) for each uncertain 

variable and then recalculates the spreadsheet. 

NORMAL

Figure 8B.7.1.3 Normal 

Probability Distribution

TRIANGULAR

Figure 8B.7.1.2 Triangular 

Probability Distribution

UNIFORM

Figure 8B.7.1.1 Uniform 

Probability Distribution

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8B.7 HIGH-SAVINGS AND LOW-SAVINGS SCENARIOS 

 DOE conducted sensitivity analyses to quantify the relationship between certain critical 

inputs to the life-cycle cost analysis and the resultant weighted-average LCC savings for EPSs 

and BCs. These critical inputs were manufacturer selling prices (MSPs), product lifetimes, usage 

profiles, and loading points (EPSs only). As presented in chapter 8, all results for EPSs use 

manufacturer-provided data (“Manufacturer Data”) and all results for BCs use both 

Manufacturer Data and data from DOE’s tests and teardowns (“Test/Teardown Data”) where 

available. For the teardown results, DOE varied all the inputs except for the MSP, because the 

MSP was based on iSuppli teardowns of physical units, which did not have an associated 

uncertainty. By varying the critical inputs simultaneously, DOE calculated a low-savings case 

and a high-savings case for weighted-average LCC savings to compare with the reference case 

presented in chapter 8. 

B.7.1 Manufacturer Selling Price Adjustments for High-Savings and Low-Savings 

Scenarios 

 To create general relationships between cost and efficiency, DOE aggregated 

manufacturer MSP data and determined a reference case MSP value for each candidate standard 

level (CSL) of each EPS and BC representative unit and product class, respectively. The 

reference MSP was obtained by looking up the MSP from an equation of the curve-fit for cost 

and efficiency data at a particular CSL. Additional detail on the methodology used to derive the 

reference MSPs can be found in chapter 5. 

 

 However, presenting the reference case MSPs alone does not capture the variation 

present in the original manufacturer responses. Specifically, some manufacturer MSPs were 

above the curve fits, while some were below. Therefore, a measure is needed of how far above 

and how far below the original manufacturer responses were in relation to the curve fits. In order 

to highlight the type of variation present in the manufacturer MSP data while avoiding disclosure 

of the individual responses, DOE evaluated low-MSP and high-MSP scenarios. 

 

 The low-MSP and high-MSP scenarios were based on the average error of manufacturer 

data points below and above the curve fits, respectively. Specifically, the low-MSP scenario was 

calculated by multiplying the reference case MSPs by an average residual factor. The average 

residual factor was the ratio of the original MSP provided by manufacturers compared to the 

curve-fit MSP at a particular efficiency level. The average residual factor used for the low-MSP 

scenario was the average of all the residual factors that were less than or equal to 1, which 

corresponds to all the manufacturer data that was at or below the curve fit. The average residual 

factor used for the high-MSP scenario was the average of all the residual factors that were 

greater than or equal to 1, which corresponds to all the manufacturer data that was at or above 

the curve fit. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-6

 The low-MSP scenario corresponds to a high-savings case, and the high-MSP scenario 

corresponds to a low-savings case. The reason for this is that the level of savings from more 

efficient products depends on how much the savings in energy usage over the lifetime of the 

product will exceed the additional cost associated with a more efficient product. All other 

factors being constant, the low-MSP scenario results in a product that has the same efficiency, 

but a lower MSP than under the reference case. Therefore, since the energy savings have stayed 

the same, but the MSPs have decreased, the overall savings will be higher for the low-MSP 

scenario. Conversely, the high-MSP case results in lower LCC results, and was used for the lowsavings case. 

Table 8B.7.1 Manufacturer Selling Price Adjustments for External Power Supplies Highand Low-Savings Scenarios 

Representative 

Unit CSL

Manufacturer Selling Price ($)

HighSavings Reference LowSavings

2.5 W

0 $0.00 $0.00 $0.00

1 $0.04 $0.04 $0.04

2 $0.22 $0.23 $0.24

3 $0.30 $0.31 $0.32

4 $0.40 $0.42 $0.43

18 W

0 $0.00 $0.00 $0.00

1 $0.19 $0.32 $0.56

2 $0.25 $0.42 $0.74

3 $0.47 $0.79 $1.39

4 $0.73 $1.23 $2.18

60 W

0 $0.00 $0.00 $0.00

1 $0.20 $0.24 $0.32

2 $0.59 $0.71 $0.96

3 $1.31 $1.58 $2.13

4 $2.40 $2.90 $3.90

120 W

0 $0.00 $0.00 $0.00

1 $0.52 $0.66 $0.82

2 $0.97 $1.23 $1.52

3 $1.11 $1.41 $1.75

4 $3.98 $5.03 $6.25

EERE-2008-BT-STD-0005 COMMENT 31
8B-7

Table 8B.7.2 Manufacturer Selling Price Adjustments for Battery Chargers High- and 

Low-Savings Scenarios 

Representative 

Product Class CSL

Manufacturer Selling Price ($)

Manufacturer Interview Data Testing and Teardown Data

HighSavings Reference LowSavingsHighSavings* Reference LowSavings*

Low Energy, 

Inductive

0 $1.81 $2.05 $2.44

-

-

-

1 $1.96 $2.22 $2.64 -

2 $2.16 $2.45 $2.91 -

3 $2.30 $2.60 $3.10 -

Low Energy, 

Low Voltage

0 $0.54 $0.62 $0.76

No change

-

No change 1 $0.96 $1.09 $1.34 $0.62

2 $10.29 $11.71 $14.35 $2.62

3 - - - -

Low Energy, 

High Voltage

0 $3.20 $3.79 $4.76

No change

$3.79

No change 1 $8.03 $9.52 $11.93 $6.76

2 $10.70 $12.68 $15.90 $7.44

3 - - - -

Medium Energy, 

Low Voltage

0 $16.34 $18.48 $21.99

No change

18.48

No change 1 $24.27 $27.46 $32.67 21.71

2 $56.69 $64.14 $76.32 -

3 112.25 $127.00 $151.12 -

High Energy

0 $73.45 $79.01 $86.15

-

-

-

1 $88.25 $94.94 $103.52 -

2 $118.11 $127.05 $138.54 -

3 $179.78 $192.32 $209.71 -

Low Energy, AC 

Output

0 $2.44 $2.76 $3.28

No change

$2.76

No change 1 $3.47 $3.93 $4.67 $2.11

2 $3.75 $4.25 $5.06 -

3 $4.10 $4.64 $5.53 -

* For the BC Test/Teardown units, the high-savings and low-savings MSPs are identical to the reference case 

because an actual teardown was used to estimate the MSP, and thus, there was no variation.

B.7.2 Product Lifetime Adjustments for High-Savings and Low-Savings Scenarios 

 DOE assumes that, in most cases, the lifetimes for BCs and EPSs are equivalent to those 

of the applications they power. DOE therefore determined BC/EPS lifetimes based on a variety 

of sources that indicated lifetimes for BC/EPS applications, such as market research, stakeholder 

comments, and industry reports. Chapter 3 describes BC and EPS lifetimes in more detail. 

 In some cases, DOE found multiple sources that assigned different lifetimes to a specific 

application. In these cases DOE used the average of the stated values in the reference case 

analysis. For the high-savings case DOE used the source that provided the highest reasonable 

lifetime, while in the low-savings case DOE used the source that provided the lowest reasonable 

lifetime. Application lifetimes for which only one source was available or no source was 

available (in which case DOE made an assumption regarding the lifetime) were not altered in the 

high- or low-savings scenarios. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-8

Table 8B.7.3 and Table 8B.7.4 show the lifetime values used in the reference, low-, and 

high-savings scenarios only for those applications where the values varied between the scenarios.

Table 8B.7.3 Lifetime Adjustments for Class A EPS High- and Low-Savings Scenarios 

Application EPS Lifetime (years)

High-Savings Reference Low-Savings

Answering Machines 6.0 5.0 4.0

Camcorders 6.0 4.9 3.7

Clock Radios 6.0 4.7 4.0

Cordless Phones 6.0 5.3 5.0

Indoor Fountains 7.0 4.7 2.0

Netbooks 4.0 3.5 3.0

Notebooks 4.0 3.3 3.0

Table 8B.7.4 Lifetime Adjustments for BC High- and Low-Savings Scenarios 

Application BC Lifetime (years)

High-Savings Reference Low-Savings

Answering Machines 6.0 5.0 4.0

Beard and Mustache Trimmers 5.0 4.5 4.0

Blenders 6.0 5.0 4.0

Camcorders 6.0 4.9 3.7

Can Openers 6.0 5.0 4.0

Cordless Phones 6.0 5.3 5.0

DIY Power Tools (External) 7.7 5.9 5.0

DIY Power Tools (Integral) 7.7 5.9 5.0

Golf Carts 9.7 6.4 3.0

Mixers 6.0 5.0 4.0

Mobile Phones 4.0 2.0 2.0

Netbooks 4.0 3.5 3.0

Notebooks 4.0 3.3 3.0

Professional Power Tools 7.7 5.4 3.0

Shavers 5.0 4.1 3.3

Universal Battery Chargers 8.0 6.0 4.0

B.7.3 Usage Profile Adjustments for High-Savings and Low-Savings Scenarios 

 Usage profiles are inputs to the calculation of annual unit energy consumption (UECs). 

For many applications, DOE identified multiple sources that provided BC or EPS usage profiles. 

To calculate reference case profiles, DOE either chose the usage profile from the source it 

believed to best characterize the typical use of a BC or EPS, or it chose a weighted average of 

multiple sources. This methodology is detailed in chapter 7. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-9

 In the high- and low-savings scenarios, DOE varied the usage profiles where multiple 

sources were available for a single application. To maximize savings in the LCC analysis (highsavings scenario), DOE selected the sources that maximized time spent in active modes with 

high loading points. To minimize savings (low-savings scenario), DOE selected the sources that 

minimized time spent in the modes with high loading points. Table 8B.7.5 and Table 8B.7.6

contain the usage profiles, listed by application, that were adjusted in the high- and low-savings 

scenarios, along with the reference case usage profiles for those applications. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-10

Table 8B.7.5 Usage Profile Adjustments for EPS High- and Low-Savings Scenarios 

Application SavingsCase

Active 1 Active 2 Active 3 Active 4 Active 5 Active 6 No-Load Unplugged

[hrs/wk]

DIY Power 

Tools 

(External)

App State Charging Maint.

No 

battery No-Load Unplugged

Reference 2.01 40.14 1.99 1.99 121.86

Low 0.69 4.83 162.48

DIY Power 

Tools 

(Integral)

App State Charging Maint. No-Load Unplugged

Reference 2.01 40.14 3.99 121.86

Low 0.69 4.83 162.48

E-Books

App State Charging Maint. No-Load Unplugged

Reference 10.08 42.42 59.50 56.00

Low 2.80 4.20 161.00

External 

Media 

Drives

App State Active Idle No-Load Unplugged

High 21.00 21.00 126.00

Reference 21.00 21.00 63.00 63.00

Ink Jet 

Imaging 

Equipment

App State Active Ready Off

High 5.43 12.64 149.93

Reference 5.06 11.38 151.57

Low 1.69 166.31

In-Vehicle 

GPS

App State Charging Maint. No-Load Unplugged

High 10.08 42.42 59.50 56.00

Reference 2.80 4.20 161.00

Mobile 

Phones

App State Charging Maint. No-Load Unplugged

High 20.93 21.07 112.56 13.44

Reference 20.93 21.07 49.00 77.00

Notebooks

App State On and 

Charging

On with 

DVD 

playing

Off and 

Charging On Sleep Off Unplugged

High 1.73 5.18 1.73 43.08 45.43 67.87 2.99

Reference 4.14 5.18 4.14 25.03 21.76 81.14 26.60

Low 5.75 5.18 5.75 13.01 5.98 89.99 42.35

Personal 

Digital 

Assistants

App State Charging Maint. No-Load Unplugged

Reference 9.31 32.69 49.00 77.00

Low 10.08 42.42 59.50 56.00

Toy Ride-On 

Vehicles

App State Charging Maint. No-Load Unplugged

Reference 10.08 42.42 59.50 56.00

Low 2.80 4.20 161.00

Table 8B.7.6 Usage Profile Adjustments for BC High- and Low-Savings Scenarios 

EERE-2008-BT-STD-0005 COMMENT 31
8B-11

Application SavingsCase

Active + 

Maintenance

No 

Battery Unplugged Charges

(hrs/day) (#/day)

Answering Machines

Reference 21.84 2.16 0.00 0.71

Low 18.48 5.52 0.00 0.21

Consumer Two-Way Radios

Reference 4.63 5.38 14.00 0.55

Low 0.50 0.50 23.00 0.04

Cordless Phones

Reference 21.84 2.16 0.00 0.71

Low 18.48 5.52 0.00 0.21

Digital Cameras

Reference 1.03 1.17 21.80 0.09

Low 0.47 0.53 23.00 0.07

DIY Power Tools (Integral)

High 23.50 0.50 0.00 0.07

Reference 12.30 0.10 11.60 0.10

Low 1.50 0.50 22.00 0.07

E-Books

High 7.50 8.50 8.00 0.29

Reference 1.00 0.00 23.00 0.14

Hedge Trimmers

Reference 6.15 0.05 17.80 0.05

Low 3.91 0.10 20.00 0.70

In-Vehicle GPS

High 7.50 8.50 8.00 0.29

Reference 1.00 0.00 23.00 0.14

Mobile Phones

High 8.00 11.20 4.80 0.57

Reference 6.00 7.00 11.00 0.71

Mobility Scooters

High 19.00 5.00 0.00 1.00

Reference 12.00 12.00 0.00 0.70

Netbooks

High 18.56 0.04 5.40 0.66

Reference 18.00 0.00 6.00 0.71

Notebooks

High 21.62 0.28 2.10 0.39

Reference 20.23 0.17 3.60 0.51

Weed Trimmers

Reference 6.15 0.05 17.80 0.05

Low 3.91 0.10 20.00 0.70

Wheel Chairs

High 12.00 12.00 0.00 1.00

Reference 12.00 12.00 0.00 0.70

B.7.4 Loading Point Adjustments for High-Savings and Low-Savings Scenarios 

 Loading points, as described in chapter 7, are inputs in the calculation of EPS UECs. 

DOE assumed in the non-Class A EPS determination analysis that standard active-mode loading 

points for EPSs are approximately 80-percent loaded. The results of subsequent tests suggested 

that this value may be closer to 60-percent, so DOE adopted a default loading point of 60-percent 

in the reference case scenario. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-12

 To calculate UECs in the high-savings case, DOE readjusted the highest active-mode 

loading points to 80-percent, reflecting the assumption used in the non-Class A EPS 

determination analysis. In the low-savings case, DOE assumed the highest active-mode loading 

point to be 40-percent.1

 In the high- and low-savings analysis, DOE did not alter the loading points of any 

application for which loading point test data were available. Loading points derived from test 

data are indicated as such in appendix 7A. 

B.7.5 Life-Cycle Cost and Payback Period Results for External Power Supplies in the 

High-Savings Scenario 

Table 8B.7.7 through Table 8B.7.10 present the LCC and PBP results for the four Class 

A EPS representative units using the high-savings scenario inputs. All other variables and inputs 

use the reference case value. 

Table 8B.7.7 2.5W External Power Supplies (Manufacturer Data), High-Savings Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 58.3 0.500 0.00 2.05 2.05 - - - - - -

1 67.9 0.300 0.06 1.41 1.47 0.19 0.0 65.8 34.2 0.4 0.7

2 71.0 0.130 0.34 1.09 1.43 0.23 22.1 15.0 62.9 2.7 3.2

3 73.5 0.100 0.45 0.95 1.40 0.25 25.7 3.2 71.1 3.2 3.3

4 74.0 0.053 0.61 0.88 1.49 0.17 51.1 0.0 48.9 4.0 4.4

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

 

1

 EPSs for home security systems are the one exception to this methodology. Since these EPSs operate almost 

entirely in maintenance mode (which is assumed to have a loading point of 17-percent), DOE adjusted this value up 

to 20-percent in the high-savings case and left it at 17-percent in the low-savings case. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-13

Table 8B.7.8 18W External Power Supplies (Manufacturer Data), High-Savings Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 76.0 0.500 0.00 7.32 7.32 - - - - - -

1 80.3 0.300 0.26 5.60 5.86 0.51 4.8 65.9 29.3 0.6 2.0

2 83.0 0.200 0.35 4.62 4.97 1.27 10.8 15.6 73.6 0.4 1.4

3 85.4 0.100 0.65 3.77 4.42 1.79 13.9 3.3 82.8 0.8 3.1

4 87.5 0.062 1.02 3.15 4.17 2.04 17.1 0.0 82.9 1.2 4.4

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

Table 8B.7.9 60W External Power Supplies (Manufacturer Data), High-Savings Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 85.0 0.500 0.00 5.49 5.49 - - - - - -

1 87.0 0.500 0.28 4.84 5.12 0.12 0.1 66.1 33.8 1.8 1.8

2 87.0 0.200 0.85 4.09 4.94 0.27 10.7 15.3 74.0 2.7 2.8

3 88.0 0.073 1.88 3.47 5.35 -0.13 70.4 3.2 26.4 4.4 4.6

4 91.0 0.073 3.45 2.55 6.00 -0.78 87.7 0.0 12.3 5.4 5.5

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

Table 8B.7.10 120W External Power Supplies (Manufacturer Data), High-Savings 

Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 85.0 0.500 0.00 8.96 8.96 - - - - - -

1 87.0 0.500 0.73 7.76 8.49 0.16 0.0 65.9 34.1 2.4 2.3

2 88.0 0.230 1.36 6.57 7.93 0.63 0.0 15.2 84.8 2.1 2.0

3 88.4 0.210 1.56 6.29 7.85 0.72 1.0 3.2 95.8 2.2 2.2

4 91.7 0.165 5.58 4.37 9.95 -1.39 89.0 0.0 11.0 5.1 5.3

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-14

B.7.6 Life-Cycle Cost and Payback Period Results for External Power Supplies in the 

Low-Savings Scenario 

Table 8B.7.11 through Table 8B.7.14 present the LCC and PBP results for the four Class 

A EPS representative units using the low-savings scenario inputs. All other variables and inputs 

use the reference case value. 

Table 8B.7.11 2.5W External Power Supplies (Manufacturer Data), Low-Savings Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 58.3 0.500 0.00 1.50 1.50 - - - - - -

1 67.9 0.300 0.06 1.01 1.08 0.15 3.6 66.2 30.2 0.4 1.7

2 71.0 0.130 0.35 0.80 1.16 0.08 49.0 15.6 35.4 3.9 12.3

3 73.5 0.100 0.48 0.70 1.18 0.06 59.4 3.2 37.4 3.9 12.8

4 74.0 0.053 0.64 0.66 1.30 -0.06 74.2 0.0 25.8 5.1 18.1

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

Table 8B.7.12 18W External Power Supplies (Manufacturer Data), Low-Savings Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 76.0 0.500 0.00 5.74 5.74 - - - - - -

1 80.3 0.300 0.79 4.37 5.15 0.21 8.3 66.1 25.6 1.8 7.7

2 83.0 0.200 1.04 3.59 4.63 0.65 14.1 15.2 70.7 1.4 5.7

3 85.4 0.100 1.96 2.91 4.87 0.42 41.2 3.2 55.6 2.9 12.6

4 87.5 0.062 3.05 2.43 5.48 -0.19 55.1 0.0 44.9 4.1 18.0

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

Table 8B.7.13 60W External Power Supplies (Manufacturer Data), Low-Savings Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 85.0 0.500 0.00 4.14 4.14 - - - - - -

1 87.0 0.500 0.46 3.66 4.12 0.00 20.8 66.4 12.8 3.6 3.5

2 87.0 0.200 1.38 3.05 4.43 -0.26 72.4 15.4 12.2 5.1 5.1

3 88.0 0.073 3.06 2.57 5.63 -1.42 94.8 3.2 2.0 8.1 8.5

4 91.0 0.073 5.62 1.89 7.51 -3.30 99.7 0.0 0.3 10.3 10.4

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-15

Table 8B.7.14 120W External Power Supplies (Manufacturer Data), Low-Savings Scenario 

CSL Eff.*

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 85.0 0.500 0.00 5.20 5.19 - - - - - -

1 87.0 0.500 1.14 4.51 5.65 -0.15 32.9 65.9 1.2 5.1 4.7

2 88.0 0.230 2.13 3.78 5.91 -0.37 77.1 15.7 7.2 4.1 4.0

3 88.4 0.210 2.45 3.61 6.06 -0.51 90.6 3.3 6.1 4.5 4.4

4 91.7 0.165 8.75 2.52 11.26 -5.72 100.0 0.0 0.0 10.6 11.0

* “Eff.” stands for “efficiency level.”

† Based on an incremental MSP over the baseline. 

B.7.7 Life-Cycle Cost and Payback Period Results for Battery Chargers in the HighSavings Scenario 

Table 8B.7.15 through Table 8B.7.24 present the LCC and PBP results for the six BC

representative units using the high-savings scenario inputs. All other variables and inputs use the 

reference case value. Results are presented using Manufacturer Data and Test/Teardown Data 

where available. 

Table 8B.7.15 Low Energy, Inductive Battery Chargers (Manufacturer Data), HighSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 10.0 3.88 4.83 8.71 - - - - - -

1 7.0 4.07 3.38 7.45 0.94 0.0 25.0 75.0 0.6 0.6

2 3.5 4.34 1.69 6.03 2.19 0.0 12.5 87.5 0.7 0.7

3 1.5 4.52 0.72 5.25 2.98 0.0 0.0 100.0 0.8 0.7

Table 8B.7.16 Low Energy, Low Voltage Battery Chargers (Manufacturer Data), HighSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 10.0 1.25 3.83 5.08 - - - - - -

1 6.0 1.87 2.49 4.36 0.31 5.3 60.8 33.9 1.4 2.0

2 1.2 15.89 0.60 16.50 -11.47 97.1 2.8 0.1 21.2 30.3

EERE-2008-BT-STD-0005 COMMENT 31
8B-16

Table 8B.7.17 Low Energy, Low Voltage Battery Chargers (Test/Teardown Data), HighSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 10.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A

1 6.0 1.42 2.86 4.28 - - - - - -

2 1.2 4.43 0.45 4.88 -0.61 70.7 2.8 26.5 4.7 6.3

Table 8B.7.18 Low Energy, High Voltage Battery Chargers (Manufacturer Data), HighSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 39.4 6.78 22.48 29.27 - - - - - -

1 10.5 13.61 5.76 19.36 1.86 0.7 81.4 17.9 2.3 2.3

2 6.1 17.38 3.28 20.67 1.07 42.1 38.4 19.5 6.6 7.0

Table 8B.7.19 Low Energy, High Voltage Battery Chargers (Test/Teardown Data), HighSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 39.4 8.04 20.08 28.12 - - - - - -

1 10.5 12.23 5.47 17.70 1.95 0.6 81.4 18.0 1.2 1.6

2 6.1 13.20 3.41 16.61 2.64 8.8 38.2 53.0 1.4 2.1

Table 8B.7.20 Medium Energy, Low Voltage Battery Chargers (Manufacturer Data), 

High-Savings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 202.7 40.58 91.05 131.63 - - - - - -

1 159.6 52.23 73.15 125.38 2.99 8.8 56.7 34.5 2.1 6.7

2 100.0 99.82 40.89 140.71 -6.49 46.1 40.4 13.5 5.6 6.7

3 75.0 181.38 30.58 211.96 -77.74 99.4 0.0 0.6 15.2 36.1

EERE-2008-BT-STD-0005 COMMENT 31
8B-17

Table 8B.7.21 Medium Energy, Low Voltage Battery Chargers (Test/Teardown Data), 

High-Savings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 202.7 45.92 113.47 159.39 - - - - - -

1 159.6 50.65 83.55 134.20 10.62 0.0 56.9 43.1 1.0 1.0

Table 8B.7.22 High Energy Battery Chargers (Manufacturer Data), High-Savings 

Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 290.0 182.03 246.93 428.95 - - - - - -

1 250.0 203.71 212.87 416.58 5.93 4.5 50.1 45.4 5.4 5.1

2 200.0 247.44 170.29 417.73 5.03 31.0 30.2 38.8 7.3 7.2

3 150.0 336.32 127.72 464.04 -41.27 91.8 0.0 8.2 11.7 12.6

Table 8B.7.23 Low Energy, AC Out Battery Chargers (Manufacturer Data), High-Savings 

Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 19.6 5.25 11.12 16.37 - - - - - -

1 6.4 6.74 3.62 10.36 5.34 0.0 11.1 88.9 1.1 1.1

2 4.0 7.14 2.27 9.41 6.28 0.0 0.0 100.0 1.2 1.2

3 1.5 7.65 0.85 8.50 7.19 0.0 0.0 100.0 1.3 1.3

Table 8B.7.24 Low Energy, AC Out Battery Chargers (Test/Teardown Data), HighSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 19.6 5.93 11.12 17.06 - - - - - -

1 6.4 4.54 3.62 8.15 7.90 0.0 11.1 88.9 0.0 0.0

EERE-2008-BT-STD-0005 COMMENT 31
8B-18

B.7.8 Life-Cycle Cost and Payback Period Results for Battery Chargers in the LowSavings Scenario 

Table 8B.7.25 through Table 8B.7.34 present the LCC and PBP results for the six BC 

representative units using the low-savings scenario inputs. All other variables and inputs use the 

reference case value. Results are presented using Manufacturer Data and Test/Teardown Data 

where available. 

Table 8B.7.25 Low Energy, Inductive Battery Chargers (Manufacturer Data), LowSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 10.0 5.22 4.84 10.06 - - - - - -

1 7.0 5.48 3.39 8.87 0.89 0.0 25.4 74.6 0.9 0.8

2 3.5 5.84 1.69 7.54 2.05 0.0 12.4 87.6 1.0 0.9

3 1.5 6.09 0.73 6.81 2.78 0.0 0.0 100.0 1.0 1.0

Table 8B.7.26 Low Energy, Low Voltage Battery Chargers (Manufacturer Data), LowSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 10.0 1.74 2.73 4.47 - - - - - -

1 6.0 2.61 1.66 4.27 0.08 23.5 61.6 14.9 2.2 4.0

2 1.2 22.19 0.41 22.60 -17.74 97.2 2.8 0.0 36.7 67.6

Table 8B.7.27 Low Energy, Low Voltage Battery Chargers (Test/Teardown Data), LowSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 10.0 N/A N/A N/A N/A N/A N/A N/A N/A N/A

1 6.0 1.42 2.05 3.47 - - - - - -

2 1.2 4.43 0.28 4.71 -1.21 76.6 2.9 20.5 5.9 9.7

EERE-2008-BT-STD-0005 COMMENT 31
8B-19

Table 8B.7.28 Low Energy, High Voltage Battery Chargers (Manufacturer Data), LowSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 39.4 10.08 12.80 22.88 - - - - - -

1 10.5 20.23 3.41 23.64 -0.23 14.1 81.4 4.5 4.2 4.0

2 6.1 25.83 2.02 27.85 -2.83 58.3 38.3 3.4 11.1 12.1

Table 8B.7.29 Low Energy, High Voltage Battery Chargers (Test/Teardown Data), LowSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 39.4 8.03 13.43 21.46 - - - - - -

1 10.5 12.22 3.54 15.76 1.03 1.1 81.0 17.9 1.3 1.6

2 6.1 13.19 1.97 15.16 1.35 14.9 38.7 46.4 1.5 2.8

Table 8B.7.30 Medium Energy, Low Voltage Battery Chargers (Manufacturer Data), LowSavings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 202.7 54.63 37.18 91.81 - - - - - -

1 159.6 70.31 32.92 103.23 -4.82 42.4 57.6 0.0 15.0 18.1

2 100.0 134.38 10.27 144.65 -29.68 52.5 41.0 6.5 28.0 24.2

3 75.0 244.16 7.56 251.72 -136.75 100.0 0.0 0.0 65.0 107.8

Table 8B.7.31 Medium Energy, Low Voltage Battery Chargers (Test/Teardown Data), 

Low-Savings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 202.7 45.93 57.56 103.48 - - - - - -

1 159.6 50.66 36.72 87.39 7.58 1.0 56.6 42.4 2.2 2.1

EERE-2008-BT-STD-0005 COMMENT 31
8B-20

Table 8B.7.32 High Energy Battery Chargers (Manufacturer Data), Low-Savings Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 290.0 213.52 84.60 298.12 - - - - - -

1 250.0 238.96 72.91 311.87 -6.83 49.8 50.2 0.0 6.6 6.1

2 200.0 290.25 58.30 348.55 -32.69 70.2 29.8 0.0 8.9 8.8

3 150.0 394.51 43.68 438.20 -122.34 100.0 0.0 0.0 14.3 15.3

Table 8B.7.33 Low Energy, AC Out Battery Chargers (Manufacturer Data), Low-Savings 

Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 19.6 7.06 11.14 18.20 - - - - - -

1 6.4 9.07 3.62 12.69 4.93 0.0 11.2 88.8 1.5 1.4

2 4.0 9.62 2.27 11.89 5.74 0.0 0.0 100.0 1.6 1.6

3 1.5 10.30 0.85 11.15 6.48 0.0 0.0 100.0 1.8 1.7

Table 8B.7.34 Low Energy, AC Out Battery Chargers (Test/Teardown Data), Low-Savings 

Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings Payback Period

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers with

Median

yrs.

Mean

yrs.

Net 

Cost

%

No 

Impact

%

Net 

Benefit

%

0 19.6 5.94 11.14 17.08 - - - - - -

1 6.4 4.54 3.62 8.16 7.93 0.0 11.2 88.8 0.0 0.0

8B.8 LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS FOR THE 

COMMERCIAL SECTOR 

 This section presents LCC and PBP results for the commercial sector using the reference 

case for all other variables. The results use the commercial electricity price, electricity price 

trend, and discount rate, but keep all other inputs constant with the residential sector reference 

case. As presented in chapter 8, all results for EPSs use Manufacturer Data and all results for 

BCs use both Manufacturer Data and Test/Teardown Data where available. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-21

B.8.1 Class A External Power Supply Results for the Commercial Sector 

Table 8B.8.1 through Table 8B.8.4 present the LCC and PBP results for the four Class A 

EPS representative units using inputs for the commercial sector. 

Table 8B.8.1 2.5W External Power Supplies (Manufacturer Data), Commercial Sector 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 58.3 0.500 0.00 1.39 1.39 - - -

1 67.9 0.300 0.06 0.90 0.96 0.14 66.0 0.5

2 71.0 0.130 0.35 0.72 1.06 0.06 15.2 4.2

3 73.5 0.100 0.47 0.63 1.09 0.03 3.3 4.3

4 74.0 0.053 0.63 0.59 1.22 -0.09 0.0 5.9

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.8.2 18W External Power Supplies (Manufacturer Data), Commercial Sector 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 76.0 0.500 0.00 5.25 5.25 - - -

1 80.3 0.300 0.44 4.00 4.45 0.27 66.0 1.3

2 83.0 0.200 0.59 3.30 3.89 0.75 15.2 0.9

3 85.4 0.100 1.11 2.69 3.79 0.84 3.3 1.9

4 87.5 0.062 1.73 2.24 3.97 0.66 0.0 2.7

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-22

Table 8B.8.3 60W External Power Supplies (Manufacturer Data), Commercial Sector 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 3.71 3.71 - - -

1 87.0 0.500 0.35 3.27 3.62 0.03 66.0 2.7

2 87.0 0.200 1.02 2.75 3.78 -0.10 15.2 4.1

3 88.0 0.073 2.28 2.32 4.60 -0.91 3.3 6.8

4 91.0 0.073 4.18 1.71 5.89 -2.19 0.0 8.2

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.8.4 120W External Power Supplies (Manufacturer Data), Commercial Sector 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 5.23 5.23 - - -

1 87.0 0.500 0.92 4.53 5.45 -0.08 66.0 3.8

2 88.0 0.230 1.72 3.82 5.54 -0.15 15.2 3.3

3 88.4 0.210 1.97 3.65 5.62 -0.23 3.3 3.6

4 91.7 0.165 7.05 2.54 9.59 -4.20 0.0 8.9

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

B.8.2 Battery Charger Results for the Commercial Sector 

Table 8B.8.6 through Table 8B.8.13 present the LCC and PBP results for the six BC

representative units using inputs for the commercial sector. Results are presented using 

Manufacturer Data and Test/Teardown Data where available. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-23

Table 8B.8.5 Low Energy, Inductive Battery Chargers (Manufacturer Data), Commercial 

Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 4.39 3.83 8.22 - - -

1 7.0 4.61 2.68 7.29 0.70 25.0 0.8

2 3.5 4.91 1.34 6.26 1.60 12.5 0.9

3 1.5 5.12 0.57 5.69 2.17 0.0 0.9

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected.

Table 8B.8.6 Low Energy, Low Voltage Battery Chargers (Manufacturer Data), 

Commercial Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 1.42 2.64 4.06 - - -

1 6.0 2.13 1.66 3.79 0.11 60.8 1.9

2 1.2 18.11 0.36 18.47 -14.16 2.8 29.0

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.8.7 Low Energy, Low Voltage Battery Chargers (Test/Teardown Data), 

Commercial Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 N/A N/A N/A N/A N/A N/A

1 6.0 1.42 1.99 3.41 - - -

2 1.2 4.43 0.31 4.74 -1.30 2.8 5.1

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-24

Table 8B.8.8 Low Energy, High Voltage Battery Chargers (Manufacturer Data), 

Commercial Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 13.30 21.34 - - -

1 10.5 16.14 3.44 19.58 0.33 81.3 3.0

2 6.1 20.61 1.98 22.60 -1.53 38.3 8.9

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.8.9 Low Energy, High Voltage Battery Chargers (Test/Teardown Data), 

Commercial Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 12.37 20.41 - - -

1 10.5 12.24 3.33 15.57 0.91 81.3 1.5

2 6.1 13.20 2.02 15.22 1.12 38.3 2.1

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected.

Table 8B.8.10 Medium Energy, Low Voltage Battery Chargers (Manufacturer Data), 

Commercial Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 72.03 117.97 - - -

1 159.6 59.13 57.73 116.86 0.48 56.6 3.2

2 100.0 113.00 32.65 145.65 -16.70 40.3 7.8

3 75.0 205.32 24.42 229.75 -100.80 0.0 24.7

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-25

Table 8B.8.11 Medium Energy, Low Voltage Battery Chargers (Test/Teardown Data), 

Commercial Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 88.68 134.62 - - -

1 159.6 50.68 65.65 116.33 7.94 56.6 0.9

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected.

Table 8B.8.12 High Energy Battery Chargers (Manufacturer Data), Commercial Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 290.0 195.92 135.31 331.22 - - -

1 250.0 219.26 116.64 335.90 -2.34 50.0 6.2

2 200.0 266.32 93.31 359.64 -18.95 30.0 8.8

3 150.0 361.98 69.99 431.97 -91.28 0.0 15.5

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.8.13 Low Energy, AC Out Battery Chargers (Manufacturer Data), Commercial 

Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 8.74 14.68 - - -

1 6.4 7.63 2.84 10.47 3.74 11.1 1.4

2 4.0 8.09 1.78 9.87 4.34 0.0 1.5

3 1.5 8.66 0.67 9.33 4.88 0.0 1.7

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-26

Table 8B.8.14 Low Energy, AC Out Battery Chargers (Test/Teardown Data), Commercial 

Sector 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 8.74 14.68 - - -

1 6.4 4.54 2.84 7.38 6.49 11.1 0.0

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected.

8B.9 LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS USING 

ALTERNATIVE ENERGY PRICE SCENARIOS 

 This section presents LCC and PBP results using alternative energy price scenarios from 

Energy Information Administration (EIA)’s Annual Energy Outlook 2010 Early Release (AEO 

2010).i The other scenarios considered were a high-growth, low-growth, and carbon cap and 

trade scenario. Figure 8B.8.2.1 shows the price forecasts from AEO 2010 for electricity in the 

residential sector for the three scenarios considered and the reference case. This section only 

shows results for the residential sector. As presented in chapter 8, all results for EPSs use 

Manufacturer Data and all results for BCs use both Manufacturer Data and Test/Teardown Data 

where available. 

Figure 8B.8.2.1 Residential Electricity Price Forecast 

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

2005 2010 2015 2020 2025 2030 2035 2040

Price Trend (2009=1)

Year

Reference

High Growth

Low Growth

Carbon Cap

Start Year: 2013

EERE-2008-BT-STD-0005 COMMENT 31
8B-27

B.9.1 Class A External Power Supply Results Using Alternative Energy Price Scenarios 

B.9.1.1 Class A External Power Supply Results Using AEO 2010 High-Growth 

Price Scenario 

Table 8B.9.1 through Table 8B.9.4 present the LCC and PBP results for the four Class A 

EPS representative units using the high-growth electricity price scenario from AEO 2010.

Table 8B.9.1 2.5W External Power Supplies, AEO 2010 High-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 58.3 0.500 0.00 1.78 1.78 - - -

1 67.9 0.300 0.06 1.15 1.22 0.19 66.0 0.4

2 71.0 0.130 0.35 0.92 1.27 0.15 15.2 3.4

3 73.5 0.100 0.47 0.80 1.27 0.14 3.3 3.6

4 74.0 0.053 0.63 0.76 1.38 0.03 0.0 4.8

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.2 18W External Power Supplies, AEO 2010 High-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 76.0 0.500 0.00 6.70 6.70 - - -

1 80.3 0.300 0.44 5.11 5.56 0.39 66.0 1.1

2 83.0 0.200 0.59 4.21 4.80 1.03 15.2 0.7

3 85.4 0.100 1.11 3.43 4.53 1.29 3.3 1.6

4 87.5 0.062 1.73 2.86 4.59 1.23 0.0 2.2

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-28

Table 8B.9.3 60W External Power Supplies, AEO 2010 High-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 4.73 4.73 - - -

1 87.0 0.500 0.35 4.17 4.52 0.07 66.0 2.2

2 87.0 0.200 1.02 3.51 4.53 0.06 15.2 3.3

3 88.0 0.073 2.28 2.96 5.24 -0.63 3.3 5.6

4 91.0 0.073 4.18 2.18 6.36 -1.75 0.0 6.7

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.4 120W External Power Supplies, AEO 2010 High-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 6.62 6.62 - - -

1 87.0 0.500 0.92 5.74 6.66 -0.01 66.0 3.1

2 88.0 0.230 1.72 4.84 6.56 0.07 15.2 2.7

3 88.4 0.210 1.97 4.62 6.60 0.04 3.3 3.0

4 91.7 0.165 7.05 3.22 10.27 -3.64 0.0 7.3

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

B.9.1.2 Class A External Power Supply Results Using AEO 2010 Low-Growth Price 

Scenario 

Table 8B.9.5 through Table 8B.9.8 present the LCC and PBP results for the four Class A 

EPS representative units using the low-growth electricity price scenario from AEO 2010. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-29

Table 8B.9.5 2.5W External Power Supplies, AEO 2010 Low-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 58.3 0.500 0.00 1.67 1.67 - - -

1 67.9 0.300 0.06 1.08 1.15 0.18 66.0 0.4

2 71.0 0.130 0.35 0.87 1.21 0.12 15.2 3.6

3 73.5 0.100 0.47 0.76 1.22 0.11 3.3 3.7

4 74.0 0.053 0.63 0.71 1.34 0.00 0.0 5.1

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.6 18W External Power Supplies, AEO 2010 Low-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 76.0 0.500 0.00 6.32 6.32 - - -

1 80.3 0.300 0.44 4.82 5.26 0.36 66.0 1.1

2 83.0 0.200 0.59 3.97 4.56 0.96 15.2 0.8

3 85.4 0.100 1.11 3.23 4.34 1.17 3.3 1.6

4 87.5 0.062 1.73 2.70 4.43 1.08 0.0 2.3

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.7 60W External Power Supplies, AEO 2010 Low-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 4.46 4.46 - - -

1 87.0 0.500 0.35 3.94 4.28 0.06 66.0 2.3

2 87.0 0.200 1.02 3.31 4.33 0.02 15.2 3.5

3 88.0 0.073 2.28 2.80 5.08 -0.70 3.3 5.8

4 91.0 0.073 4.18 2.06 6.24 -1.86 0.0 7.0

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-30

Table 8B.9.8 120W External Power Supplies, AEO 2010 Low-Growth 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 6.26 6.26 - - -

1 87.0 0.500 0.92 5.43 6.35 -0.03 66.0 3.3

2 88.0 0.230 1.72 4.57 6.29 0.02 15.2 2.9

3 88.4 0.210 1.97 4.37 6.34 -0.03 3.3 3.1

4 91.7 0.165 7.05 3.04 10.09 -3.78 0.0 7.7

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

B.9.1.3 Class A External Power Supply Results Using Carbon Cap and Trade Price 

Scenario 

Table 8B.9.9 through Table 8B.9.12 present the LCC and PBP results for the four Class 

A EPS representative units using the carbon cap and trade electricity price scenario from the 

Lieberman-Warner Climate Security Act of 2007.ii

Table 8B.9.9 2.5W External Power Supplies, Carbon Cap and Trade Scenario 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 58.3 0.500 0.00 1.81 1.81 - - -

1 67.9 0.300 0.06 1.17 1.24 0.19 66.0 0.4

2 71.0 0.130 0.35 0.94 1.28 0.16 15.2 3.3

3 73.5 0.100 0.47 0.82 1.29 0.15 3.3 3.4

4 74.0 0.053 0.63 0.77 1.40 0.04 0.0 4.6

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-31

Table 8B.9.10 18W External Power Supplies, Carbon Cap and Trade Scenario 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 76.0 0.500 0.00 6.84 6.84 - - -

1 80.3 0.300 0.44 5.22 5.66 0.40 66.0 1.0

2 83.0 0.200 0.59 4.30 4.89 1.06 15.2 0.7

3 85.4 0.100 1.11 3.50 4.61 1.33 3.3 1.5

4 87.5 0.062 1.73 2.92 4.65 1.29 0.0 2.1

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.11 60W External Power Supplies, Carbon Cap and Trade Scenario 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 4.83 4.83 - - -

1 87.0 0.500 0.35 4.27 4.61 0.08 66.0 2.1

2 87.0 0.200 1.02 3.59 4.61 0.08 15.2 3.2

3 88.0 0.073 2.28 3.03 5.31 -0.60 3.3 5.3

4 91.0 0.073 4.18 2.23 6.41 -1.70 0.0 6.4

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.12 120W External Power Supplies, Carbon Cap and Trade Scenario 

CSL Efficiency 

Level

%

No 

Load 

Power

W

Life-Cycle Cost Life-Cycle Cost 

Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price†

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC†

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 85.0 0.500 0.00 6.80 6.80 - - -

1 87.0 0.500 0.92 5.90 6.82 -0.01 66.0 3.0

2 88.0 0.230 1.72 4.97 6.69 0.10 15.2 2.6

3 88.4 0.210 1.97 4.75 6.72 0.07 3.3 2.8

4 91.7 0.165 7.05 3.31 10.36 -3.57 0.0 7.0

† Based on an incremental MSP over the baseline. 

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-32

B.9.2 Battery Charger Results Using Alternative Energy Price Scenarios 

B.9.2.1 Battery Charger Results Using AEO 2010 High-Growth Price Scenario 

Table 8B.9.13 through Table 8B.9.22 present the LCC and PBP results for the six BC

representative units using the high-growth electricity price scenario from AEO 2010. Results are 

presented using Manufacturer Data and Test/Teardown Data where available. 

Table 8B.9.13 Low Energy, Inductive Battery Chargers (Manufacturer Data), AEO 2010 

High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 4.39 4.92 9.31 - - -

1 7.0 4.61 3.44 8.05 0.94 25.0 0.6

2 3.5 4.91 1.72 6.63 2.18 12.5 0.7

3 1.5 5.12 0.74 5.86 2.96 0.0 0.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected.

Table 8B.9.14 Low Energy, Low Voltage Battery Chargers (Manufacturer Data), AEO 

2010 High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 1.42 3.36 4.78 - - -

1 6.0 2.13 2.11 4.24 0.21 60.8 1.6

2 1.2 18.11 0.46 18.57 -13.72 2.8 23.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-33

Table 8B.9.15 Low Energy, Low Voltage Battery Chargers (Test/Teardown Data), AEO 

2010 High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 N/A N/A N/A N/A N/A N/A

1 6.0 1.42 2.53 3.95 - - -

2 1.2 4.43 0.39 4.83 -0.85 2.8 4.2

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.16 Low Energy, High Voltage Battery Chargers (Manufacturer Data), AEO 

2010 High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 17.01 25.06 - - -

1 10.5 16.14 4.40 20.54 0.85 81.3 2.5

2 6.1 20.61 2.53 23.15 -0.76 38.3 7.3

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.17 Low Energy, High Voltage Battery Chargers (Test/Teardown Data), AEO 

2010 High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 15.78 23.82 - - -

1 10.5 12.24 4.25 16.49 1.37 81.3 1.3

2 6.1 13.20 2.58 15.78 1.81 38.3 1.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-34

Table 8B.9.18 Medium Energy, Low Voltage Battery Chargers (Manufacturer Data), AEO 

2010 High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg.

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 92.50 138.45 - - -

1 159.6 59.13 74.26 133.39 2.19 56.6 2.6

2 100.0 113.00 41.66 154.66 -10.50 40.3 6.4

3 75.0 205.32 31.16 236.48 -92.33 0.0 20.3

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.19 Medium Energy, Low Voltage Battery Chargers (Test/Teardown Data), 

AEO 2010 High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 114.41 160.36 - - -

1 159.6 50.68 84.47 135.15 10.94 56.6 0.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.20 High Energy Battery Chargers (Manufacturer Data), AEO 2010 HighGrowth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 290.0 195.92 175.42 371.33 - - -

1 250.0 219.26 151.22 370.48 0.43 50.0 5.1

2 200.0 266.32 120.98 387.30 -11.35 30.0 7.3

3 150.0 361.98 90.73 452.71 -76.76 0.0 12.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-35

Table 8B.9.21 Low Energy, AC Out Battery Chargers (Manufacturer Data), AEO 2010 

High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 11.30 17.24 - - -

1 6.4 7.63 3.68 11.30 5.28 11.1 1.1

2 4.0 8.09 2.31 10.39 6.19 0.0 1.3

3 1.5 8.66 0.86 9.53 7.06 0.0 1.4

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.22 Low Energy, AC Out Battery Chargers (Test/Teardown Data), AEO 2010 

High-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 11.30 17.24 - - -

1 6.4 4.54 3.68 8.22 8.02 11.1 0.0

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

B.9.2.2 Battery Charger Results Using AEO 2010 Low-Growth Price Scenario 

Table 8B.9.23 through Table 8B.9.32 present the LCC and PBP results for the six BC 

representative units using the low-growth electricity price scenario from AEO 2010. Results are 

presented using Manufacturer Data and Test/Teardown Data where available. 

Table 8B.9.23 Low Energy, Inductive Battery Chargers (Manufacturer Data), AEO 2010 

Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 4.39 4.63 9.02 - - -

1 7.0 4.61 3.24 7.85 0.88 25.0 0.7

2 3.5 4.91 1.62 6.53 2.03 12.5 0.7

3 1.5 5.12 0.69 5.81 2.75 0.0 0.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-36

Table 8B.9.24 Low Energy, Low Voltage Battery Chargers (Manufacturer Data), AEO 

2010 Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 1.42 3.17 4.59 - - -

1 6.0 2.13 1.99 4.12 0.18 60.8 1.6

2 1.2 18.11 0.44 18.54 -13.83 2.8 24.9

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.25 Low Energy, Low Voltage Battery Chargers (Test/Teardown Data), AEO 

2010 Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 N/A N/A N/A N/A N/A N/A

1 6.0 1.42 2.39 3.81 - - -

2 1.2 4.43 0.37 4.80 -0.97 2.8 4.4

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.26 Low Energy, High Voltage Battery Chargers (Manufacturer Data), AEO 

2010 Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 16.02 24.07 - - -

1 10.5 16.14 4.15 20.28 0.71 81.3 2.6

2 6.1 20.61 2.39 23.00 -0.97 38.3 7.6

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-37

Table 8B.9.27 Low Energy, High Voltage Battery Chargers (Test/Teardown Data), AEO 

2010 Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 14.88 22.92 - - -

1 10.5 12.24 4.01 16.24 1.25 81.3 1.3

2 6.1 13.20 2.43 15.63 1.63 38.3 1.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.28 Medium Energy, Low Voltage Battery Chargers (Manufacturer Data), AEO 

2010 Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 87.03 132.97 - - -

1 159.6 59.13 69.82 128.95 1.75 56.6 2.8

2 100.0 113.00 39.30 152.30 -12.19 40.3 6.7

3 75.0 205.32 29.39 234.72 -94.61 0.0 21.3

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.29 Medium Energy, Low Voltage Battery Chargers (Test/Teardown Data), 

AEO 2010 Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 107.44 153.38 - - -

1 159.6 50.68 79.41 130.09 10.11 56.6 0.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-38

Table 8B.9.30 High Energy Battery Chargers (Manufacturer Data), AEO 2010 LowGrowth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 290.0 195.92 164.25 360.16 - - -

1 250.0 219.26 141.59 360.85 -0.34 50.0 5.4

2 200.0 266.32 113.27 379.60 -13.46 30.0 7.6

3 150.0 361.98 84.96 446.94 -80.81 0.0 13.3

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.31 Low Energy, AC Out Battery Chargers (Manufacturer Data), AEO 2010 

Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 10.60 16.54 - - -

1 6.4 7.63 3.45 11.07 4.86 11.1 1.2

2 4.0 8.09 2.16 10.25 5.68 0.0 1.3

3 1.5 8.66 0.81 9.47 6.46 0.0 1.4

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.32 Low Energy, AC Out Battery Chargers (Test/Teardown Data), AEO 2010 

Low-Growth 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 10.60 16.54 - - -

1 6.4 4.54 3.45 7.99 7.60 11.1 0.0

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

B.9.2.3 Battery Charger Results Using Carbon Cap and Trade Price Scenario 

Table 8B.9.33 through Table 8B.9.42 present the LCC and PBP results for the six BC

representative units using the carbon cap and trade electricity price scenario from the LiebermanEERE-2008-BT-STD-0005 COMMENT 31
8B-39

Warner Climate Security Act of 2007. Results are presented using Manufacturer Data and 

Test/Teardown Data where available. 

Table 8B.9.33 Low Energy, Inductive Battery Chargers (Manufacturer Data), Carbon Cap 

and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 4.39 5.01 9.40 - - -

1 7.0 4.61 3.50 8.11 0.96 25.0 0.6

2 3.5 4.91 1.75 6.67 2.23 12.5 0.7

3 1.5 5.12 0.75 5.87 3.02 0.0 0.7

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.34 Low Energy, Low Voltage Battery Chargers (Manufacturer Data), Carbon 

Cap and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 1.42 3.44 4.86 - - -

1 6.0 2.13 2.16 4.29 0.22 60.8 1.5

2 1.2 18.11 0.47 18.58 -13.66 2.8 22.8

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.35 Low Energy, Low Voltage Battery Chargers (Test/Teardown Data), Carbon 

Cap and Trade Scenario) 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 10.0 N/A N/A N/A N/A N/A N/A

1 6.0 1.42 2.59 4.01 - - -

2 1.2 4.43 0.40 4.84 -0.80 2.8 4.0

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-40

Table 8B.9.36 Low Energy, High Voltage Battery Chargers (Manufacturer Data), Carbon 

Cap and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 17.37 25.41 - - -

1 10.5 16.14 4.49 20.63 0.89 81.3 2.4

2 6.1 20.61 2.59 23.20 -0.69 38.3 7.0

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.37 Low Energy, High Voltage Battery Chargers (Test/Teardown Data), Carbon 

Cap and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 39.4 8.04 16.14 24.18 - - -

1 10.5 12.24 4.35 16.58 1.42 81.3 1.2

2 6.1 13.20 2.63 15.84 1.88 38.3 1.7

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.38 Medium Energy, Low Voltage Battery Chargers (Manufacturer Data), 

Carbon Cap and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 94.48 140.42 - - -

1 159.6 59.13 75.82 134.95 2.38 56.6 2.5

2 100.0 113.00 42.61 155.62 -9.96 40.3 6.1

3 75.0 205.32 31.87 237.20 -91.55 0.0 19.4

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-41

Table 8B.9.39 Medium Energy, Low Voltage Battery Chargers (Test/Teardown Data), 

Carbon Cap and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 202.7 45.94 116.73 162.67 - - -

1 159.6 50.68 86.23 136.91 11.18 56.6 0.7

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.40 High Energy Battery Chargers (Manufacturer Data), Carbon Cap and 

Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 290.0 195.92 177.97 373.89 - - -

1 250.0 219.26 153.42 372.68 0.60 50.0 4.9

2 200.0 266.32 122.74 389.06 -10.86 30.0 6.9

3 150.0 361.98 92.05 454.04 -75.84 0.0 12.2

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

Table 8B.9.41 Low Energy, AC Out Battery Chargers (Manufacturer Data), Carbon Cap 

and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 11.47 17.41 - - -

1 6.4 7.63 3.73 11.36 5.38 11.1 1.1

2 4.0 8.09 2.34 10.43 6.31 0.0 1.2

3 1.5 8.66 0.88 9.54 7.20 0.0 1.3

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-42

Table 8B.9.42 Low Energy, AC Out Battery Chargers (Test/Teardown Data), Carbon Cap 

and Trade Scenario 

CSL UEC

kWh

Life-Cycle Cost Life-Cycle Cost Savings

Median 

Payback 

Period

yrs.

Avg. 

Installed 

Price

2009$

Avg. 

Operating 

Cost

2009$

Avg. 

LCC

2009$

Wtd.

Avg. 

Savings

2009$

Consumers 

with No 

Impact*

%

0 19.6 5.94 11.47 17.41 - - -

1 6.4 4.54 3.73 8.27 8.13 11.1 0.0

* “No impact” means that the base case forecast product assigned to the consumer has greater efficiency than the 

level indicated, so the consumer is not affected. 

EERE-2008-BT-STD-0005 COMMENT 31
8B-43

 

i U.S. Department of Energy. Energy Information Administration. Annual Energy Outlook 2010 

Early Release. March, 2010. Washington, D.C. 

http://www.eia.doe.gov/oiaf/aeo/. 

ii U.S. Department of Energy. Energy Information Administration. Energy Market and 

Economic Impacts of S.2191, The Lieberman-Warner Climate Security Act of 2007. April 2008. 

Washington, D.C. 

http://www.eia.doe.gov/oiaf/servicerpt/s2191/excel/s2191.xls. 

EERE-2008-BT-STD-0005 COMMENT 31