7-i

CHAPTER 7. ENERGY USE ANALYSIS

TABLE OF CONTENTS

7.1 INTRODUCTION ........................................................................................................... 7-1

7.2 EQUIPMENT CLASSES ................................................................................................ 7-1

7.3 ESTIMATING ENERGY USE OF REFRIGERATED BEVERAGE VENDING 

MACHINES..................................................................................................................... 7-3

7.3.1 Energy Use of Class A and B Refrigerated Beverage Vending Machines.......... 7-3

7.3.2 Energy Use of Combination Refrigerated Beverage Vending Machines............ 7-6

7.3.3 Modeling Annual Energy Consumption Using Daily Energy Consumption....... 7-6

7.4 ANNUAL ENERGY CONSUMPTION........................................................................ 7-12

LIST OF TABLES

Table 7.2.1 Equipment Classes and Energy Conservation Standards for Beverage 

Vending Machines (Compliance Date August 31, 2012).............................. 7-2

Table 7.2.2 Combination Equipment Class Subcategories Used in This Analysis........... 7-2

Table 7.2.3 Configurations of the Refrigerated Beverage Vending Machines 

Analyzed in the 2009 BVM Final Rule ......................................................... 7-3

Table 7.3.1 Distribution of Refrigerated Volumes for BVM Equipment Classes A 

and B.............................................................................................................. 7-5

Table 7.3.2 Average Daily Energy Consumption for Combination BVM 

Equipment Class............................................................................................ 7-6

Table 7.3.3 Average Refrigerated Volume for Combination BVM Equipment 

Class............................................................................................................... 7-6

Table 7.3.4 Vending Machine and BVM Location Data Based on Sampling from 

U.S. Colleges and Universities...................................................................... 7-8

Table 7.3.5 Adjustment Factors for Equipment Class B Refrigerated Beverage 

Vending Machines at Current Standard by State and District of 

Columbia...................................................................................................... 7-11

Table 7.4.1 Annual Energy Consumption for Equipment Class A and B 

Refrigerated Beverage Vending Machines.................................................. 7-13

Table 7.4.2 Annual Energy Consumption for Combination Refrigerated Beverage 

Vending Machines....................................................................................... 7-14
7-ii

LIST OF FIGURES

Figure 7.3.1 Daily Energy Consumption (DEC) of BVM Equipment Class A 

Models as a Function of Refrigerated Volume .............................................. 7-4

Figure 7.3.2 Daily Energy Consumption (Dec) of BVM Equipment Class B Models 

as a Function of Refrigerated Volume ........................................................... 7-4

Figure 7.3.3 Distribution of Refrigerated Volumes for BVM Equipment Classes A 

and B.............................................................................................................. 7-5

Figure 7.3.4 Relationship between Annual Energy Consumption and Daily Energy 

Consumption for Outdoor BVM Equipment Class B.................................... 7-9
7-1

CHAPTER 7. ENERGY USE ANALYSIS

7.1 INTRODUCTION

The U.S. Department of Energy (DOE) conducts an energy use analysis to determine the 

savings in operating cost accrued to customers from the use of more-efficient equipment. The 

results are used to inform the life-cycle cost (LCC) and payback period (PBP) calculations 

described in chapter 8 and the national impacts analysis (NIA) found in chapter 10. This chapter 

describes the means and methods DOE adopted to determine the annual energy consumption 

(AEC) of refrigerated beverage vending machines (BVMs) to inform the LCC and PBP analysis.

The goal of the energy use analysis is to generate a range of energy use values that 

reflects actual equipment use in the United States by new refrigerated beverage vending 

machines at various efficiency levels. The engineering analysis described in chapter 5 reports 

energy use derived from the conditions and requirements of the DOE test procedure. This test 

procedure produces standardized results that can be used to assess or compare the performance 

of equipment operating under specified conditions. Actual energy usage in the field often differs 

from that estimated by the test procedure because of variation in operating conditions, the 

behavior of users, and other factors. 

Very limited data exist on field energy consumption of refrigerated beverage vending 

machines. For indoor refrigerated beverage vending machine use, DOE assumed that the test 

energy use measurements were an accurate reflection of field energy use, because indoor 

environments are normally kept close to the average temperature used for the DOE test (75 °F). 

For outdoor refrigerated beverage vending machine use, DOE has opted to use a simulation

model to estimate field energy use from DOE test energy use. 

7.2 EQUIPMENT CLASSES

The current standard for refrigerated beverage vending machines (10 CFR 431.296), as 

prescribed by the 2009 BVM Final Rule (74 FR 44968, August 31, 2009), classifies refrigerated 

beverage vending machines into two equipment classes (A and B), plus a “Combination” class 

for which a standard has not yet been established; see Table 7.2.1. DOE is analyzing Class A, 

Class B, and combination equipment in this rulemaking. 
7-2

Table 7.2.1 Equipment Classes and Energy Conservation Standards for Beverage 

Vending Machines (Compliance Date August 31, 2012)

Equipment

Class Definition

Maximum Daily 

Energy Consumption 

kWh/Day

A

A refrigerated bottled or canned beverage 

vending machine that is fully cooled, and is 

not a combination vending machine

0.055 × V* + 2.56

B

Any refrigerated bottled or canned beverage 

vending machine not considered to be Class A, 

and is not a combination vending machine

0.073 × V + 3.16

Combination

A refrigerated bottled or canned beverage 

vending machine that also has nonrefrigerated 

volumes for the purpose of vending other, non-

“sealed beverage” merchandise

[RESERVED]

* ‘‘V’’ denotes the refrigerated volume in cubic feet of the refrigerated bottled or canned beverage vending 

machine.

For the purposes of analysis, DOE has divided the Combination equipment class into two 

subcategories, “Combo A” and “Combo B,” that differ in whether the refrigerated volume is 

fully cooled, following the convention established for equipment classes A and B; see Table 

7.2.2.

Table 7.2.2 Combination Equipment Class Subcategories Used in This Analysis

Combination 

Equipment Class 

Subcategory

Description

Combo A

A refrigerated bottled or canned beverage vending machine that also 

has nonrefrigerated volumes for the purpose of vending other, non-

“sealed beverage” merchandise; the refrigerated volume is fully 

cooled

Combo B

Any refrigerated bottled or canned beverage vending machine that 

also has nonrefrigerated volumes for the purpose of vending other, 

non-“sealed beverage” merchandise; the refrigerated volume is not 

considered to be Combo A

DOE assumed that the fraction of equipment class A and Combo A refrigerated beverage 

vending machines located outdoors is insignificant and hence negligible, and therefore assumed 

for the purpose of analysis that 100 percent of these units are located indoors. DOE assumes that 

16 percent of equipment class B and Combo B refrigerated beverage vending machines are 

located outdoors (see section 7.3.3). Although some fraction of equipment class A and Combo A
7-3

machines may be rated for both indoor and outdoor use, DOE assumes that all equipment class A 

and Combo A refrigerated beverage vending machines are located indoors both because of the 

relatively small percentage of the total number of these machines in stock and currently shipped, 

possible operator concerns of vandalism and damage if installed outdoors, and the difficulty in 

maintaining desired equipment temperatures outdoors. 

It is possible for refrigerated beverage vending machines in the same equipment class to 

have different configurations and sizes. For the 2009 BVM Final Rule, DOE standardized the 

vendible capacity and refrigerated volume of representative units for analysis (see Table 7.2.3). 

Table 7.2.3 Configurations of the Refrigerated Beverage Vending Machines Analyzed in 

the 2009 BVM Final Rule

Configuration

Equipment Class A Equipment Class B

“Small” “Medium” “Large” “Small” “Medium” “Large”

Vendible Capacity, 

number of cans 300 400 500 450 650 800

Refrigerated 

Volume, ft3 17 22 34 17 22 26

For this current analysis, DOE opted for a single representative volume for each 

equipment class for the purpose of estimating energy use. 

7.3 ESTIMATING ENERGY USE OF REFRIGERATED BEVERAGE VENDING 

MACHINES

7.3.1 Energy Use of Class A and B Refrigerated Beverage Vending Machines 

DOE began with the maximum daily energy consumption (DEC) of equipment class A 

and B as specified under the current standards and summarized in Table 7.2.1. These standards 

are expressed as a function of the refrigerated volume.

To estimate the distribution of refrigerated volumes for shipped equipment, DOE used 

data from its own Compliance Certification Management System (CCMS)a

, which represents all 

models currently being sold in the United States, and from the U.S. Environmental Protection 

Agency’s (EPA’s) list of ENERGY STAR qualified equipmentb, which represents models that 

are certified to the E-Star 3.0 standard that became effective in March 2013. The two databases 

together represent 16 equipment class A and 36 equipment class B basic models, after removing 

duplicate entries between the two databases. 

 a Available for download at: http://www.regulations.doe.gov/certification-data/CCMS-41431629825.html. b Available for download at: http://www.energystar.gov/certified-products/detail/vending_machines. 
7-4

Figure 7.3.1 shows the DEC of equipment class A models as a function of refrigerated 

volume, while Figure 7.3.2 shows daily energy consumption of equipment class B models as a 

function of refrigerated volume.

Figure 7.3.1 Daily Energy Consumption (DEC) of BVM Equipment Class A Models as a 

Function of Refrigerated Volume

Figure 7.3.2 Daily Energy Consumption (Dec) of BVM Equipment Class B Models as a 

Function of Refrigerated Volume

DOE developed a histogram of refrigerated volumes for equipment classes A and B. For 

this histogram, DOE weighted more heavily models on the ENERGY STAR list, reflecting the 

observation that major bottlers, which represent roughly 90 percent of BVM market share, 

purchase ENERGY STAR equipment almost exclusively; the remaining market share was 

assumed to purchase ENERGY STAR 30 percent of the time, resulting in an overall ENERGY 

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0 10 20 30 40 50

DEC (kWh/day)

Refrigerated Volume (cu. ft)

CCMS

ENERGY STAR

Standard Level

0

1

2

3

4

5

6

7

0 10 20 30 40 50

DEC (kWh/day)

Refrigerated Volume (cu. ft)

CCMS

ENERGY STAR

Standard Level
7-5

STAR market share of 93 percent. These weights were used to generate final distributions of 

volumes for equipment classes A and B. See Figure 7.3.3.

Figure 7.3.3 Distribution of Refrigerated Volumes for BVM Equipment Classes A and B

DOE also grouped refrigerated volume categories together to approximate the “small,” 

“medium,” and “large” designations used in the 2009 BVM Final Rule in order to obtain market 

shares by volume category. The weighted average volume from all model data was also 

calculated. See Table 7.3.1.

Table 7.3.1 Distribution of Refrigerated Volumes for BVM Equipment Classes A and B

Equipment Class A Equipment Class B

Size 

category

Reference 

volume

(cu. ft.)

Volume

range 

(cu. ft.)

Market 

share

(%)

Reference 

volume

(cu. ft.)

Volume

range 

(cu. ft.)

Market 

share

(%)

Small 17 <18 0 17 <18 23

Medium 22 18 to 28 36 22 18 to 23 18

Large 34 >=28 64 26 >=23 59

Equipment Class A Equipment Class B

Average 

volume 

(cu. ft.)

29.6 23.4

0.0%

5.0%

10.0%

15.0%

20.0%

25.0%

<8

8-10

10-1212-1414-1616-1818-2020-2222-2424-2626-2828-3030-3232-3434-3636-38

38+

Percentage of weighted models

Refrigerated volume (cu. ft.)

Class A

Class B
7-6

7.3.2 Energy Use of Combination Refrigerated Beverage Vending Machines

For the Combination BVM equipment class, DOE determined the baseline daily energy 

consumption of each equipment class subcategory from simulated units (described in chapter 5) 

in two size categories, referred to as “medium” and “large”, and calculated the average of the 

two for the purpose of estimating the average daily energy consumption. Lacking other data, 

DOE also assumed that 100 percent of equipment sold on the market would correspond to this 

baseline energy consumption level. See Table 7.3.2.

Table 7.3.2 Average Daily Energy Consumption for Combination BVM Equipment

Class 

Equipment Class Subcategory

Daily Energy Consumption (kWh/day)

“Medium” size “Large” size Average

Combo A 5.900 6.270 6.085

Combo B 4.800 4.930 4.865

Data on distributions of refrigerated volumes were not available for the Combination 

BVM equipment class. Therefore, DOE used refrigerated volumes of models it had simulated for 

the engineering analysis, consisting of two sizes each for Combo A and Combo B subcategories 

(see chapter 5). For the purpose of estimating volume distributions, DOE assumed that 50 

percent of the market was of “medium” size and 50 percent was of “large” size for each 

Combination BVM equipment class subcategory. See Table 7.3.3.

Table 7.3.3 Average Refrigerated Volume for Combination BVM Equipment Class

Equipment Class Subcategory

Refrigerated volume (cu. ft.)

“Medium” size “Large” size Average

Combo A 8.82 11.75 10.29

Combo B 3.51 5.15 4.33

7.3.3 Modeling Annual Energy Consumption Using Daily Energy Consumption

In the same vein as the 2009 Final Rule TSD, DOE estimated the AEC for equipment

class A and Combo A, and the indoor AEC for equipment class B and Combo B, as the product 

of the average DEC from the DOE Test Procedure indoor test condition of 75 °F/45 percent RH 

and 365 days per year. In addition, DOE assumed that the indoor AEC values for all equipment

classes do not vary by State.

The outdoor AEC values for equipment class B and Combo B, however, are subject to 

influence from meteorological and climatic variations. 

DOE estimated the fraction of equipment class B refrigerated beverage vending machines 

located outdoors by conducting an online search for BVM locations. DOE found BVM locations 

and types of vending machines for six colleges and universities around the country. These data 

were freely available as many colleges and universities offer information on facilities and

auxiliary dining services for their students and staff. It was also felt that campuses (and large 
7-7

campuses in particular) are fairly representative of the general BVM population, as they have a 

mix of building types that mirror some of the major markets for refrigerated beverage vending 

machines. Campuses typically have many office buildings, laboratory buildings (which could be 

a proxy for small factories or industrial sites), parking facilities, residential buildings (which 

could mimic commercial lodging facilities), sports facilities, and medical facilities. On the other 

hand, colleges and universities might have a larger prevalence of outdoor refrigerated beverage 

vending machines, as they are generally located in environments where people are circulating 

outdoors and where overall security may be higher than in an average setting.

Results for this sampling of campus refrigerated beverage vending machines are 

summarized in Table 7.3.4. Out of a total sample of 1,106 vending machines, about two-thirds 

were found to be refrigerated beverage vending machines. Of these, 16 percent were located 

outdoors on average. This data set sampled from a range of states in the East, Midwest, and 

Western United States and drew from both urban and suburban locations. Urban locations would 

be expected to have more indoor refrigerated beverage vending machines. However, the bulk of 

data is from three large universities in relatively warm-weather locations: University of North 

Carolina-Charlotte (UNCC), University of California-Los Angeles (UCLA), and University of 

Texas-Austin (UT-Austin). This data set therefore may skew the estimate of outdoor vending 

machines to a higher percentage, so the true number may be slightly lower than 16 percent. 

(The three large campuses alone have an average of 18 percent of their refrigerated beverage 

vending machines located outdoors). Nonetheless, DOE assumed that the average percentage of 

outdoor vending machines for equipment class B was 16 percent. DOE also assumed this same 

percentage of outdoor vending machines for Combination equipment class subcategory Combo 

B.
7-8

Table 7.3.4 Vending Machine and BVM Location Data Based on Sampling from U.S. 

Colleges and Universities

University 

or College Location

Total 

vending 

machines

Refrigerated 

beverage 

vending 

machines

Percentage

refrigerated 

beverage 

vending 

machines

Outdoor 

beverage 

vending 

machines

Percent 

located 

outdoors

UNCC

Charlotte, 

North 

Carolina

189 126 67 24 19

UCLA

Los 

Angeles, 

California

350 199* 57* 44 22

UT-Austin Austin, 

Texas 401 298 74 42 14

Columbia 

College

Chicago, 

Illinois 57 30 53 0 0

Johnson 

Community 

College

Overland 

Park, 

Kansas

67 38 57 0 0

Miami 

University

Oxford, 

Ohio 42 20 48 0 0

Average 1106 711 64 110 16

* Data on the number of refrigerated beverage vending machines at UCLA was not available, so DOE used the 

median BVM percentage across the other colleges as its best estimate.

In chapter 7 of the 2009 Final Rule TSD, a simulation model was developed to estimate

the energy consumption of equipment class B machines in different ambient temperature and 

relative humidity environments. Results from these simulations showed a very linear behavior in 

outdoor AEC versus DEC (indoor test condition) for each refrigerated volume category, so DOE 

adopted a linear model to capture the relationship between the DEC and outdoor AEC for

equipment class B machines, which is depicted in Figure 7.3.4.
7-9

Figure 7.3.4 Relationship between Annual Energy Consumption and Daily Energy 

Consumption for Outdoor BVM Equipment Class B

The relationship between DEC and outdoor AEC for equipment class B can be 

summarized as:

AEC = k • DEC (1)

Where:

AEC = annual energy consumption in kWh/year, 

DEC = daily energy consumption in kWh/day, and

k = scaling factor.

The R2 values of the three regression fits were very high (>0.98). Including an intercept to 

equation (1) increased the R2 values slightly but introduced a needless complication that did not have 

a sufficiently strong physical rationale to justify its use. Therefore, the simpler approach of a 

proportional relationship was retained for the purpose of this analysis.

y = 288.25x

R2 = 0.9825

y = 293.18x

R2 = 0.9818

y = 298.39x

R2 = 0.9865

1000

1100

1200

1300

1400

1500

1600

1700

3.6 4.1 4.6 5.1 5.6 6.1

Annual Energy Consumption (kWh/year)

Daily Energy Consumption (kWh/day)

Outdoor Class B Machines: Annual Energy 

Consumption

Large Outdoor Medium Outdoor Small Out

Linear (Large Outdoor) Linear (Medium Outdoor) Linear (Small Out)
7-10

Using a single value of the refrigerated volume enables the use of a single scaling factor 

across all size categories, rather than using a scaling factor for each size category. Because the 

scaling factors obtained for the three size categories varied by less than four percent, a single 

scaling factor multiplied by the weighted-average of DEC values based on market share will give 

an estimate that is very close to that obtained using individual size-dependent scaling factors.

With regard to the estimation of AEC using DEC for equipment class B (outdoor) based 

on a linear model described by equation (1), DOE decided to use a weighted-average value for 

the scaling factor based on the market share percentages for each size class, as discussed in 

section 7.3.1. The reference value for the scaling factor can be expressed as:

kref = ∑i∈{s,m,l} piki (2)

Where: 

s, m and l are abbreviations for small, medium, and large,

pi = market share of refrigerated beverage vending machines of i size expressed as a 

ratio (Table 7.3.1), 

ki = scaling factor for a refrigerated beverage vending machine of i size, and 

∑i∈{s,m,l} pi = 1 . 

DOE determined that kref is equal to 291.45 using equation (3).

For the Combination BVM equipment class subcategory Combo B, DOE assumed the same 

scaling factor kref as for equipment class B.

DOE accounts for meteorological and climatic variations across the United States through the 

use of location-specific adjustment factors. Each state (plus the District of Columbia) has an 

adjustment factor that is multiplied by the AEC obtained using Equation (1) to give the outdoor AEC 

for equipment class B machines of a given size and efficiency level for that state. Each adjustment 

factor is given by dividing the outdoor AEC for each state by the national average AEC reported in 

Tables 7.4.1 and 7.4.2 of the 2009 BVM Final Rule TSD. Table 7.3.5 lists the adjustment factors 

obtained from simulation model data from the 2009 BVM Final Rule for small-, medium-, and 

large-sized equipment class B machines conforming to the current efficiency standard. A 

weighted-average adjustment factor, again provided by the estimated market shares in each size 

category, is also shown. For Combination BVM equipment class subcategory Combo B, DOE 

used the same weighted-average adjustment factors as for equipment class B. 
7-11

Table 7.3.5 Adjustment Factors for Equipment Class B Refrigerated Beverage Vending 

Machines at Current Standard by State and District of Columbia

Location Small Medium Large Weighted Average

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

District of Columbia

Florida

Georgia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

1.083

0.786

1.162

1.057

1.025

0.906

0.931

0.967

0.963

1.210

1.065

1.256

0.892

0.925

0.949

0.917

0.984

0.974

1.131

0.873

0.973

0.913

0.897

0.885

1.088

0.988

0.866

0.942

1.031

0.884

0.959

0.969

0.942

1.023

0.867

0.923

1.038

0.924

0.938

0.918

1.057

0.896

1.038

1.096

0.757

1.179

1.067

1.031

0.890

0.922

0.964

0.957

1.240

1.075

1.289

0.875

0.913

0.942

0.905

0.982

0.971

1.151

0.854

0.970

0.901

0.882

0.868

1.100

0.987

0.847

0.932

1.030

0.866

0.954

0.961

0.935

1.027

0.848

0.913

1.044

0.919

0.929

0.909

1.065

0.880

1.045

1.107

0.734

1.196

1.074

1.034

0.878

0.913

0.960

0.952

1.268

1.082

1.321

0.861

0.905

0.936

0.896

0.980

0.968

1.167

0.839

0.966

0.890

0.871

0.857

1.110

0.987

0.831

0.927

1.030

0.853

0.948

0.955

0.927

1.029

0.835

0.904

1.049

0.908

0.921

0.898

1.073

0.870

1.050

1.100

0.750

1.185

1.069

1.031

0.886

0.919

0.963

0.956

1.250

1.077

1.301

0.871

0.911

0.940

0.903

0.981

0.970

1.156

0.850

0.969

0.898

0.879

0.866

1.103

0.987

0.842

0.931

1.030

0.863

0.952

0.959

0.932

1.027

0.844

0.910

1.046

0.914

0.926

0.905

1.068

0.877

1.046
7-12

Location Small Medium Large Weighted Average

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

Wyoming

1.125

0.930

0.880

0.989

0.902

0.957

0.886

0.857

1.144

0.917

0.864

0.987

0.893

0.951

0.871

0.835

1.159

0.907

0.851

0.986

0.880

0.945

0.858

0.818

1.148

0.914

0.860

0.987

0.887

0.949

0.867

0.830

The final AEC for equipment class B and Combo B refrigerated beverage vending 

machines for each location is a weighted average of the outdoor and indoor AEC estimates. As 

discussed earlier in this section, DOE assumed that 16 percent of all refrigerated beverage 

vending machines are installed outdoors. Hence, the AEC for each location can be expressed as:

AECloc = α • AECloc,outdoor + (1- α) • AECloc,indoor (3)

Where:

AECloc = annual energy consumption for location in kWh/year, 

AECloc, indoor = indoor annual energy consumption for location in kWh/year, 

AECloc, outdoor= outdoor annual energy consumption for location in kWh/year, 

DEC = daily energy consumption in kWh/day, and

α = 0.16.

7.4 ANNUAL ENERGY CONSUMPTION 

This section reports the estimated AEC calculated using the methodology described in 

previous sections for all equipment classes at selected efficiency levels. Table 7.4.1 presents the 

AEC for equipment classes A and B, while Table 7.4.2 presents the AEC for the Combination 

equipment class. The values in the tables refer to weighted averages calculated using estimated 

market shares.
7-13

Table 7.4.1 Annual Energy Consumption for Equipment Class A and B Refrigerated 

Beverage Vending Machines

Equipment Class A (29.6 cu. ft.) Equipment Class B (23.4 cu. ft.)

Efficiency 

level

Percentage of

baseline energy 

use

Annual energy 

consumption

(kWh/yr)

Percentage of

baseline energy 

use

Annual energy 

consumption

(kWh/yr)

EL0

(Baseline) 100 1525 100 1717

EL 1 95 1448 95 1631

EL2 90 1372 90 1545

EL3 85 1296 85 1459

EL4 80 1220 80 1373

EL5 75 1144 75 1288

EL6 70 1067 70 1202

EL7 65 991 65 1116

EL8 60 915 60 1030

EL9 57 (HFC)

59 (CO2)

869 (HFC)

900 (CO2) 55 944

EL10 50 858

EL11 49 (HFC only) 841
7-14

Table 7.4.2 Annual Energy Consumption for Combination Refrigerated Beverage 

Vending Machines

Combo A

(Refrigerated volume 10.3 cu. ft.)

Combo B

(Refrigerated volume 4.3 cu. ft.)

Efficiency 

level

Percentage of

baseline energy 

use

Annual energy 

consumption

(kWh/yr)

Percentage of

baseline energy 

use

Annual energy 

consumption

(kWh/yr)

EL0

(Baseline) 100 2222 100 1718

EL1 90 2000 90 1546

EL2 80 1778 80 1374

EL3 70 1556 70 1203

EL4 60 1333 60 1031

EL5 55 1222 55 945

EL6 50 1111 50 859

EL7 45 1000 45 773

EL8 40 889 41 704

EL9 35 778

EL10 30 667

EL11 29 644