8B-i

APPENDIX 8B. LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS 

TABLE OF CONTENTS 

8B.1 LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS................................8B-1 

8B.2 DISTRIBUTION OF LIFE-CYCLE COST RESULTS..........................................8B-3 

8B.2.1 Polyphase Motors...................................................................................8B-3 

8B.2.2 Capacitor-Start Induction Run Motors...................................................8B-7 

8B.2.3 Capacitor-Start Capacitor Run Motors ................................................8B-10 

8B.3 DISTRIBUTION OF PAYBACK PERIOD RESULTS........................................8B-14 

8B.3.1 Polyphase Motors.................................................................................8B-15 

8B.3.2 Capacitor-Start Induction Run Motors.................................................8B-18 

8B.3.3 Capacitor-Start Capacitor Run Motors ................................................8B-22 

TABLE OF TABLES 

Table 8B.1.1 Polyphase Motors: Life-Cycle Cost and Payback Period Results...............8B-1 

Table 8B.1.2 Capacitor-Start Induction Motors: Life-Cycle Cost and Payback Period 

Results..........................................................................................................8B-1 

Table 8B.1.3 Capacitor-Start Capacitor Run Motors: Life-Cycle Cost and Payback 

Period Results..............................................................................................8B-2 

TABLE OF FIGURES 

Figure 8B.2.1 Polyphase Motors: Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 1........................................................................................8B-3 

Figure 8B.2.2 Polyphase Motors: Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 2........................................................................................8B-4 

Figure 8B.2.3 Polyphase Motors: Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 3........................................................................................8B-4 

Figure 8B.2.4 Polyphase Motors: Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 4........................................................................................8B-5 

Figure 8B.2.5 Polyphase Motors: Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 5........................................................................................8B-5 

Figure 8B.2.6 Polyphase Motors: Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 6........................................................................................8B-6 

Figure 8B.2.7 Polyphase Motors: Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 7........................................................................................8B-6 

Figure 8B.2.8 Capacitor-Start Induction Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 1 ....................................................................8B-7 

EERE-2007-BT-STD-0007 COMMENT 19
8B-ii

Figure 8B.2.9 Capacitor-Start Induction Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 2 ....................................................................8B-7 

Figure 8B.2.10 Capacitor-Start Induction Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 3 ....................................................................8B-8 

Figure 8B.2.11 Capacitor-Start Induction Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 4 ....................................................................8B-8 

Figure 8B.2.12 Capacitor-Start Induction Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 5 ....................................................................8B-9 

Figure 8B.2.13 Capacitor-Start Induction Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 6 ....................................................................8B-9 

Figure 8B.2.14 Capacitor-Start Induction Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 7 ..................................................................8B-10 

Figure 8B.2.15 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 1 ..................................................................8B-10 

Figure 8B.2.16 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 2 ..................................................................8B-11 

Figure 8B.2.17 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 3 ..................................................................8B-11 

Figure 8B.2.18 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 4 ..................................................................8B-12 

Figure 8B.2.19 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 5 ..................................................................8B-12 

Figure 8B.2.20 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 6 ..................................................................8B-13 

Figure 8B.2.21 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 7 ..................................................................8B-13 

Figure 8B.2.22 Capacitor-Start Capacitor Run Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 8 ..................................................................8B-14 

Figure 8B.3.1 Polyphase Motors: Distribution of Payback Period Impacts for 

Efficiency Level 1......................................................................................8B-15 

Figure 8B.3.2 Polyphase Motors: Distribution of Payback Period Impacts for 

Efficiency Level 2......................................................................................8B-15 

Figure 8B.3.3 Polyphase Motors: Distribution of Payback Period Impacts for 

Efficiency Level 3......................................................................................8B-16 

Figure 8B.3.4 Polyphase Motors: Distribution of Payback Period Impacts for 

Efficiency Level 4......................................................................................8B-16 

Figure 8B.3.5 Polyphase Motors: Distribution of Payback Period Impacts for 

Efficiency Level 5......................................................................................8B-17 

Figure 8B.3.6 Polyphase Motors: Distribution of Payback Period Impacts for 

Efficiency Level 6......................................................................................8B-17 

Figure 8B.3.7 Polyphase Motors: Distribution of Payback Period Impacts for 

Efficiency Level 7......................................................................................8B-18 

Figure 8B.3.8 Capacitor-Start Induction Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 1 ..................................................................8B-18 

Figure 8B.3.9 Capacitor-Start Induction Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 2 ..................................................................8B-19 

EERE-2007-BT-STD-0007 COMMENT 19
8B-iii

Figure 8B.3.10 Capacitor-Start Induction Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 3 ..................................................................8B-19 

Figure 8B.3.11 Capacitor-Start Induction Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 4 ..................................................................8B-20 

Figure 8B.3.12 Capacitor-Start Induction Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 5 ..................................................................8B-20 

Figure 8B.3.13 Capacitor-Start Induction Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 6 ..................................................................8B-21 

Figure 8B.3.14 Capacitor-Start Induction Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 7 ..................................................................8B-21 

Figure 8B.3.15 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 1 ..................................................................8B-22 

Figure 8B.3.16 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 2 ..................................................................8B-22 

Figure 8B.3.17 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 3 ..................................................................8B-23 

Figure 8B.3.18 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 4 ..................................................................8B-23 

Figure 8B.3.19 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 5 ..................................................................8B-24 

Figure 8B.3.20 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 6 ..................................................................8B-24 

Figure 8B.3.21 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 7 ..................................................................8B-25 

Figure 8B.3.22 Capacitor-Start Capacitor Run Motors: Distribution of Payback Period 

Impacts for Efficiency Level 8 ..................................................................8B-25 

EERE-2007-BT-STD-0007 COMMENT 19
8B-1

APPENDIX 8B. LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS 

8B.1 LIFE-CYCLE COST AND PAYBACK PERIOD RESULTS 

Table 8B.1.1 Polyphase Motors: Life-Cycle Cost and Payback Period Results 

Life-Cycle Cost Life-Cycle Cost Savings 

Consumers 

with 

Payback Period 

Energy (years) 

Efficiency 

Level 

Efficiency 

(%) Average 

Installed 

Price ($) 

Average 

Annual 

Energy 

Use 

(KWh) 

Average 

Annual 

Operating 

Cost ($) 

Average 

Cost ($) 

Average 

Savings 

($) 

Net 

Cost 

(%) 

Net 

Benefit 

(%) 

Average Median 

Baseline 77.2 512 1763 132.7 1,274 

1 78.7 524 1734 130.5 1,274 0 62.0 38.0 33.7 10.6 

2 80.0 531 1698 127.8 1,265 9 48.9 51.1 23.1 7.2 

3 81.6 542 1645 123.8 1,253 21 45.1 55.0 20.4 6.3 

4 82.5 550 1629 122.6 1,255 19 48.0 52.0 22.7 7.0 

5 85.2 643 1549 116.6 1,312 -38 70.5 29.5 48.2 13.8 

6 86.7 697 1529 115.1 1,358 -85 82.0 18.0 62.4 18.9 

7 88.3 1,446 1494 112.4 2,089 -818 98.1 1.9 263.1 55.1 

Table 8B.1.2 Capacitor-Start Induction Motors: Life-Cycle Cost and Payback Period 

Results 

Life-Cycle Cost Life-Cycle Cost Savings 

Consumers 

with 

Payback Period 

Energy (years) 

Efficiency 

Level 

Efficiency 

(%) Average 

Installed 

Price ($) 

Average 

Annual 

Energy 

Use 

(KWh) 

Average 

Annual 

Operating 

Cost ($) 

Average 

Cost ($) 

Average 

Savings 

($) 

Net 

Cost 

(%) 

Net 

Benefit 

(%) 

Average Median 

CSCR 

Baseline 65.5 502 1073 81 882 

Baseline 57.7 490 1277 96.2 941 

1 59.5 499 1226 92.3 932 9 39.6 60.4 13.9 4.3 

2 62.0 505 1164 87.7 916 25 32.7 67.3 10.4 3.2 

3 64.2 507 1110 83.6 899 41 27.7 72.3 8.3 2.6 

4 68.5 525 1020 76.9 885 55 33.7 66.3 11.0 3.3 

5 71.2 543 971 73.2 886 54 39.7 60.3 13.8 4.3 

6 73.0 587 942 70.9 919 21 52.8 47.2 23.1 6.7 

7 77.0 977 877 66.0 1,284 -346 64.0 36.0 95.5 11.2 

EERE-2007-BT-STD-0007 COMMENT 19
8B-2

Table 8B.1.3 Capacitor-Start Capacitor Run Motors: Life-Cycle Cost and Payback 

Period Results 

Life-Cycle Cost Life-Cycle Cost Savings 

Consumers 

with 

Payback Period 

Energy (years) 

Efficiency 

Level 

Efficiency 

(%) Average 

Installed 

Price ($) 

Average 

Annual 

Energy 

Use 

(KWh) 

Average 

Annual 

Operating 

Cost ($) 

Average 

Cost ($) 

Average 

Savings 

($) 

Net 

Cost 

(%) 

Net 

Benefit 

(%) 

Average Median 

CSIR 

Baseline 63.4 543 1732 131 1160 

Baseline 71.0 542 1451 109.3 1,054 

1 74.3 552 1389 104.7 1,042 12 38.2 61.8 12.7 4.1 

2 78.3 580 1278 96.3 1,031 23 45.8 54.2 17.1 5.3 

3 80.3 591 1233 92.9 1,025 28 46.3 53.7 17.4 5.4 

4 81.6 606 1239 93.3 1,043 10 55.6 44.4 23.2 7.4 

5 82.7 620 1226 92.4 1,052 2 59.9 40.1 26.3 8.4 

6 83.7 668 1219 91.8 1,098 -44 73.0 27.0 41.6 12.3 

7 85.4 686 1175 88.6 1,101 -47 72.6 27.5 40.3 12.1 

8 87.3 1,496 1144 86.2 1,897 -846 99.1 0.9 228.9 50.3 

EERE-2007-BT-STD-0007 COMMENT 19
8B.2 DISTRIBUTION OF LIFE-CYCLE COST RESULTS 

The distributions presented in this section each correspond to example runs of 10,000 Monte 

Carlo samples. As a result, their means may not correspond exactly with the mean values 

presented in the previous section, which were generated by a different Monte Carlo run. 

8B.2.1 Polyphase Motors 

Polyphase Life-Cycle Cost Savings for EL1

5% 25% 50% 75% 95%

Mean: 0.3

0

20

40

60

80

100

120

140

-15.0 -5.0 5.0 15.0 25.0 35.0 45.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 132 Outliers

Figure 8B.2.1 Polyphase Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 1 

8B-3

EERE-2007-BT-STD-0007 COMMENT 19
Polyphase Life-Cycle Cost Savings for EL2

5% 25% 50% 75% 95%

Mean: 9.1

0

20

40

60

80

100

-25.0 -5.0 15.0 35.0 55.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 486 Outliers

Figure 8B.2.2 Polyphase Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 2 

Polyphase Life-Cycle Cost Savings for EL3

5% 25% 50% 75%

Mean: 21.6

0

20

40

60

80

100

-50.0 -30.0 -10.0 10.0 30.0 50.0 70.0 90.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 763 Outliers

Figure 8B.2.3 Polyphase Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 3 

8B-4

EERE-2007-BT-STD-0007 COMMENT 19
Polyphase Life-Cycle Cost Savings for EL4

5% 25% 50% 75%

Mean: 20.1

0

20

40

60

80

100

-50.0 0.0 50.0 100.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 564 Outliers

Figure 8B.2.4 Polyphase Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 4 

Polyphase Life-Cycle Cost Savings for EL5

25% 50% 75% 95%

Mean: -37.5

0

20

40

60

80

100

-200.0 -150.0 -100.0 -50.0 0.0 50.0 100.0 150.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 494 Outliers

Figure 8B.2.5 Polyphase Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 5 

8B-5

EERE-2007-BT-STD-0007 COMMENT 19
Polyphase Life-Cycle Cost Savings for EL6

5% 25% 50% 75% 95%

Mean: -83.6

0

10

20

30

40

50

60

70

80

-250.0 -200.0 -150.0 -100.0 -50.0 0.0 50.0 100.0 150.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 348 Outliers

Figure 8B.2.6 Polyphase Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 6 

Polyphase Life-Cycle Cost Savings for EL7

5% 25%50%75%95%

Mean: -815.8

0

50

100

150

200

250

300

350

400

-3500.0 -3000.0 -2500.0 -2000.0 -1500.0 -1000.0 -500.0 0.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 197 Outliers

Figure 8B.2.7 Polyphase Motors: Distribution of Life-Cycle Cost 

Impacts for Efficiency Level 7 

8B-6

EERE-2007-BT-STD-0007 COMMENT 19
8B.2.2 Capacitor-Start Induction Run Motors 

Capacitor-Start Induction Run Life-Cycle Cost Savings for EL1

5% 25% 50% 75% 95%

Mean: 9.6

0

20

40

60

80

100

120

-15.0 -5.0 5.0 15.0 25.0 35.0 45.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 360 Outliers

Figure 8B.2.8 Capacitor-Start Induction Run Motors: Distribution 

of Life-Cycle Cost Impacts for Efficiency Level 1 

Capacitor-Start Induction Run Life-Cycle Cost Savings for EL2

5% 25% 50% 75%

Mean: 25.9

0

20

40

60

80

100

-20.0 0.0 20.0 40.0 60.0 80.0 100.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 537 Outliers

Figure 8B.2.9 Capacitor-Start Induction Run Motors: Distribution 

of Life-Cycle Cost Impacts for Efficiency Level 2 

8B-7

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Induction Run Life-Cycle Cost Savings for EL3

5% 25% 50% 75%

Mean: 43.2

0

20

40

60

80

100

-20.0 30.0 80.0 130.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 571 Outliers

Figure 8B.2.10 Capacitor-Start Induction Run Motors: Distribution 

of Life-Cycle Cost Impacts for Efficiency Level 3 

Capacitor-Start Induction Run Life-Cycle Cost Savings for EL4

5% 25% 50% 75% 95%

Mean: 58.1

0

20

40

60

80

100

-50.0 0.0 50.0 100.0 150.0 200.0 250.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 407 Outliers

Figure 8B.2.11 Capacitor-Start Induction Run Motors: Distribution 

of Life-Cycle Cost Impacts for Efficiency Level 4 

8B-8

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Induction Run Life-Cycle Cost Savings for EL5

5% 25% 50% 75% 95%

Mean: 56.9

0

20

40

60

80

100

-60.0 -10.0 40.0 90.0 140.0 190.0 240.0 290.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 342 Outliers

Figure 8B.2.12 Capacitor-Start Induction Run Motors: Distribution 

of Life-Cycle Cost Impacts for Efficiency Level 5 

Capacitor-Start Induction Run Life-Cycle Cost Savings for EL6

5% 25% 50% 75% 95%

Mean: 23.9

0

20

40

60

80

100

-150.0 -50.0 50.0 150.0 250.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 331 Outliers

Figure 8B.2.13 Capacitor-Start Induction Run Motors: Distribution 

of Life-Cycle Cost Impacts for Efficiency Level 6 

8B-9

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Induction Run Life-Cycle Cost Savings for EL7

5% 25%50%75% 95%

Mean: -341.1

0

50

100

150

200

250

300

350

400

-2500.0 -2000.0 -1500.0 -1000.0 -500.0 0.0 500.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 84 Outliers

Figure 8B.2.14 Capacitor-Start Induction Run Motors: Distribution 

of Life-Cycle Cost Impacts for Efficiency Level 7 

8B.2.3 Capacitor-Start Capacitor Run Motors 

Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL1

5% 25% 50% 75% 95%

Mean: 13.4

0

20

40

60

80

100

120

140

-20.0 0.0 20.0 40.0 60.0 80.0 100.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 75 Outliers

Figure 8B.2.15 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 1 

8B-10

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL2

5% 25% 50% 75% 95%

Mean: 26.1

0

20

40

60

80

100

120

-50.0 0.0 50.0 100.0 150.0 200.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 218 Outliers

Figure 8B.2.16 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 2 

Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL3

5% 25% 50% 75% 95%

Mean: 31.5

0

20

40

60

80

100

120

-100.0 -50.0 0.0 50.0 100.0 150.0 200.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 387 Outliers

Figure 8B.2.17 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 3 

8B-11

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL4

5% 25% 50% 75% 95%

Mean: 15.9

0

20

40

60

80

100

120

-100.0 -50.0 0.0 50.0 100.0 150.0 200.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 314 Outliers

Figure 8B.2.18 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 4 

Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL5

5% 25% 50% 75% 95%

Mean: 7.1

0

20

40

60

80

100

-100.0 -50.0 0.0 50.0 100.0 150.0 200.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 324 Outliers

Figure 8B.2.19 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 5 

8B-12

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL6

5% 25% 50% 75% 95%

Mean: -37.6

0

20

40

60

80

100

-250.0 -150.0 -50.0 50.0 150.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 248 Outliers

Figure 8B.2.20 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 6 

Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL7

5% 25% 50% 75% 95%

Mean: -41

0

20

40

60

80

100

-250.0 -150.0 -50.0 50.0 150.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 340 Outliers

Figure 8B.2.21 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 7 

8B-13

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Capacitor-Run Life-Cycle Cost Savings for EL8

5% 25%50%75%95%

Mean: -838.2

0

50

100

150

200

250

300

350

-3500.0 -3000.0 -2500.0 -2000.0 -1500.0 -1000.0 -500.0 0.0

Life-cycle Cost (2008$)

Frequency (#)

10000 Trials 141 Outliers

Figure 8B.2.22 Capacitor-Start Capacitor Run Motors: 

Distribution of Life-Cycle Cost Impacts for 

Efficiency Level 8 

8B.3 DISTRIBUTION OF PAYBACK PERIOD RESULTS 

The distributions presented in this section each correspond to example runs of 10,000 Monte 

Carlo samples. As a result, their means may not correspond exactly with the mean values 

presented in the section 8B.1, which were generated by a different Monte Carlo run. 

8B-14

EERE-2007-BT-STD-0007 COMMENT 19
8B.3.1 Polyphase Motors 

Polyphase Payback Period Results for EL1

25% 50% 75%

Mean: 33.7

0

50

100

150

200

250

0.0 20.0 40.0 60.0 80.0 100.0

Payback Period (years)

Frequency

10000 Trials 779 Outliers

Figure 8B.3.1 Polyphase Motors: Distribution of Payback Period 

Impacts for Efficiency Level 1 

Polyphase Payback Period Results for EL2

25%50% 75%

Mean: 23

0

50

100

150

200

250

300

350

400

0.0 20.0 40.0 60.0 80.0 100.0

Payback Period (years)

Frequency

10000 Trials 504 Outliers

Figure 8B.3.2 Polyphase Motors: Distribution of Payback Period 

Impacts for Efficiency Level 2 

8B-15

EERE-2007-BT-STD-0007 COMMENT 19
Polyphase Payback Period Results for EL3

25%50% 75%

Mean: 20.2

0

50

100

150

200

250

300

350

400

450

0.0 20.0 40.0 60.0 80.0 100.0

Payback Period (years)

Frequency

10000 Trials 427 Outliers

Figure 8B.3.3 Polyphase Motors: Distribution of Payback Period 

Impacts for Efficiency Level 3 

Polyphase Payback Period Results for EL4

25%50% 75%

Mean: 22.6

0

50

100

150

200

250

300

350

400

0.0 20.0 40.0 60.0 80.0 100.0

Payback Period (years)

Frequency

10000 Trials 496 Outliers

Figure 8B.3.4 Polyphase Motors: Distribution of Payback Period 

Impacts for Efficiency Level 4 

8B-16

EERE-2007-BT-STD-0007 COMMENT 19
Polyphase Payback Period Results for EL5

25% 50% 75%

Mean: 47.7

0

50

100

150

200

250

300

350

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0

Payback Period (years)

Frequency

10000 Trials 795 Outliers

Figure 8B.3.5 Polyphase Motors: Distribution of Payback Period 

Impacts for Efficiency Level 5 

Polyphase Payback Period Results for EL6

25% 50% 75%

Mean: 61.9

0

50

100

150

200

250

300

0.0 50.0 100.0 150.0 200.0

Payback Period (years)

Frequency

10000 Trials 735 Outliers

Figure 8B.3.6 Polyphase Motors: Distribution of Payback Period 

Impacts for Efficiency Level 6 

8B-17

EERE-2007-BT-STD-0007 COMMENT 19
Polyphase Payback Period Results for EL7

25%50% 75%

Mean: 260.1

0

100

200

300

400

500

0.0 200.0 400.0 600.0 800.0 1000.0

Payback Period (years)

Frequency

10000 Trials 514 Outliers

Figure 8B.3.7 Polyphase Motors: Distribution of Payback Period 

Impacts for Efficiency Level 7 

8B.3.2 Capacitor-Start Induction Run Motors 

Capacitor-Start Induction Run Payback Period Results for EL1

25% 50% 75%

Mean: 13.7

0

50

100

150

200

0.0 5.0 10.0 15.0 20.0 25.0 30.0

Payback Period (years)

Frequency

10000 Trials 1052 Outliers

Figure 8B.3.8 Capacitor-Start Induction Run Motors: Distribution 

of Payback Period Impacts for Efficiency Level 1 

8B-18

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Induction Run Payback Period Results for EL2

25% 50% 75%

Mean: 10.3

0

50

100

150

200

250

300

0.0 5.0 10.0 15.0 20.0 25.0 30.0

Payback Period (years)

Frequency

10000 Trials 800 Outliers

Figure 8B.3.9 Capacitor-Start Induction Run Motors: Distribution 

of Payback Period Impacts for Efficiency Level 2 

Capacitor-Start Induction Run Payback Period Results for EL3

25%50% 75%

Mean: 8.2

0

50

100

150

200

250

300

0.0 5.0 10.0 15.0 20.0 25.0 30.0

Payback Period (years)

Frequency

10000 Trials 632 Outliers

Figure 8B.3.10 Capacitor-Start Induction Run Motors: Distribution 

of Payback Period Impacts for Efficiency Level 3 

8B-19

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Induction Run Payback Period Results for EL4

25%50% 75%

Mean: 10.8

0

50

100

150

200

250

300

350

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0

Payback Period (years)

Frequency

10000 Trials 619 Outliers

Figure 8B.3.11 Capacitor-Start Induction Run Motors: Distribution 

of Payback Period Impacts for Efficiency Level 4 

Capacitor-Start Induction Run Payback Period Results for EL5

25% 50% 75%

Mean: 13.6

0

50

100

150

200

250

300

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0

Payback Period (years)

Frequency

10000 Trials 799 Outliers

Figure 8B.3.12 Capacitor-Start Induction Run Motors: Distribution 

of Payback Period Impacts for Efficiency Level 5 

8B-20

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Induction Run Payback Period Results for EL6

25% 50% 75%

Mean: 22.6

0

50

100

150

200

250

0.0 10.0 20.0 30.0 40.0 50.0 60.0

Payback Period (years)

Frequency

10000 Trials 877 Outliers

Figure 8B.3.13 Capacitor-Start Induction Run Motors: Distribution 

of Payback Period Impacts for Efficiency Level 6 

Capacitor-Start Induction Run Payback Period Results for EL7

25%50% 75%

Mean: 91.9

0

100

200

300

400

500

600

700

800

0.0 50.0 100.0 150.0 200.0 250.0

Payback Period (years)

Frequency

10000 Trials 717 Outliers

Figure 8B.3.14 Capacitor-Start Induction Run Motors: Distribution 

of Payback Period Impacts for Efficiency Level 7 

8B-21

EERE-2007-BT-STD-0007 COMMENT 19
8B.3.3 Capacitor-Start Capacitor Run Motors 

Capacitor-Start Capacitor-Run Payback Period Results for EL1

25%50% 75%

Mean: 12.8

0

50

100

150

200

250

300

0.0 10.0 20.0 30.0 40.0 50.0

Payback Period (years)

Frequency

10000 Trials 572 Outliers

Figure 8B.3.15 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 1 

Capacitor-Start Capacitor-Run Payback Period Results for EL2

25% 50% 75%

Mean: 17.3

0

50

100

150

200

250

300

0.0 10.0 20.0 30.0 40.0 50.0

Payback Period (years)

Frequency

10000 Trials 800 Outliers

Figure 8B.3.16 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 2 

8B-22

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Capacitor-Run Payback Period Results for EL3

25%50% 75%

Mean: 17.6

0

50

100

150

200

250

300

350

0.0 10.0 20.0 30.0 40.0 50.0 60.0

Payback Period (years)

Frequency

10000 Trials 677 Outliers

Figure 8B.3.17 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 3 

Capacitor-Start Capacitor-Run Payback Period Results for EL4

25%50% 75%

Mean: 23.3

0

100

200

300

400

0.0 20.0 40.0 60.0 80.0 100.0 120.0

Payback Period (years)

Frequency

10000 Trials 410 Outliers

Figure 8B.3.18 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 4 

8B-23

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Capacitor-Run Payback Period Results for EL5

25%50% 75%

Mean: 26.5

0

50

100

150

200

250

300

350

400

0.0 20.0 40.0 60.0 80.0 100.0

Payback Period (years)

Frequency

10000 Trials 608 Outliers

Figure 8B.3.19 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 5 

Capacitor-Start Capacitor-Run Payback Period Results for EL6

25%50% 75%

Mean: 41.9

0

50

100

150

200

250

300

350

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0

Payback Period (years)

Frequency

10000 Trials 675 Outliers

Figure 8B.3.20 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 6 

8B-24

EERE-2007-BT-STD-0007 COMMENT 19
Capacitor-Start Capacitor-Run Payback Period Results for EL7

25%50% 75%

Mean: 40.6

0

50

100

150

200

250

300

350

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0

Payback Period (years)

Frequency

10000 Trials 663 Outliers

Figure 8B.3.21 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 7 

Capacitor-Start Capacitor-Run Payback Period Results for EL8

25%50% 75%

Mean: 231.4

0

100

200

300

400

500

600

0.0 200.0 400.0 600.0 800.0 1000.0

Payback Period (years)

Frequency

10000 Trials 465 Outliers

Figure 8B.3.22 Capacitor-Start Capacitor Run Motors: 

Distribution of Payback Period Impacts for 

Efficiency Level 8 

8B-25

EERE-2007-BT-STD-0007 COMMENT 19