8-C-i

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

TABLE OF CONTENTS

8-C.1 LIFE-CYCLE COST & PAYBACK RESULTS FOR LIQUID-IMMERSED 

TRANSFORMERS, DESIGN LINES 1-5 ............................................................ 8-C-1

8-C.1.1 Design Line 1 Results ............................................................................................ 8-C-1

8-C.1.2 Design Line 2 Results ............................................................................................ 8-C-3

8-C.1.3 Design Line 3 Results ............................................................................................ 8-C-4

8-C.1.4 Design Line 4 Results ............................................................................................ 8-C-7

8-C.1.5 Design Line 5 Results ............................................................................................ 8-C-9

8-C.2 LIFE-CYCLE COST & PAYBACK RESULTS FOR DRY TYPE

TRANSFORMERS, DESIGN LINES 6-13 ........................................................ 8-C-11

8-C.2.1 Design Line 6 Results .......................................................................................... 8-C-11

8-C.2.2 Design Line 7 Results .......................................................................................... 8-C-13

8-C.2.3 Design Line 8 Results .......................................................................................... 8-C-15

8-C.2.4 Design Line 9 Results .......................................................................................... 8-C-16

8-C.2.5 Design Line 10 Results ........................................................................................ 8-C-18

8-C.2.6 Design Line 11 Results ........................................................................................ 8-C-20

8-C.2.7 Design Line 12 Results ........................................................................................ 8-C-22

8-C.2.8 Design Line 13 Results ........................................................................................ 8-C-24

LIST OF TABLES

Table 8-C.1.1 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit ............................................................................................................ 8-C-1

Table 8-C.1.2 Summary Payback Period Results for Design Line 1 Representative 

Unit ............................................................................................................ 8-C-2

Table 8-C.1.3 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit ............................................................................................................ 8-C-3

Table 8-C.1.4 Summary Payback Period Results for Design Line 2 Representative 

Unit ............................................................................................................ 8-C-4

Table 8-C.1.5 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit ............................................................................................................ 8-C-5

Table 8-C.1.6 Summary Payback Period Results for Design Line 3 Representative 

Unit ............................................................................................................ 8-C-6

Table 8-C.1.7 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit ............................................................................................................ 8-C-7

Table 8-C.1.8 Summary Payback Period Results for Design Line 4 Representative 

Unit ............................................................................................................ 8-C-8

Table 8-C.1.9 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit ............................................................................................................ 8-C-9

Table 8-C.1.10 Summary Payback Period Results for Design Line 5 Representative 

Unit .......................................................................................................... 8-C-10
8-C-ii

Table 8-C.2.1 Summary Life-Cycle Cost Results for Design Line 6 Representative 

Unit .......................................................................................................... 8-C-11

Table 8-C.2.2 Summary Payback Period Results for Design Line 6 Representative 

Unit .......................................................................................................... 8-C-12

Table 8-C.2.3 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit .......................................................................................................... 8-C-13

Table 8-C.2.4 Summary Payback Period Results for Design Line 7 Representative 

Unit .......................................................................................................... 8-C-14

Table 8-C.2.5 Summary Life-Cycle Cost Results for Design Line 8 Representative 

Unit .......................................................................................................... 8-C-15

Table 8-C.2.6 Summary Payback Period Results for Design Line 8 Representative 

Unit .......................................................................................................... 8-C-16

Table 8-C.2.7 Summary Life-Cycle Cost Results for Design Line 9 Representative 

Unit .......................................................................................................... 8-C-17

Table 8-C.2.8 Summary Payback Period Results for Design Line 9 Representative 

Unit .......................................................................................................... 8-C-18

Table 8-C.2.9 Summary Life-Cycle Cost Results for Design Line 10 Representative 

Unit .......................................................................................................... 8-C-19

Table 8-C.2.10 Summary Payback Period Results for Design Line 10 Representative 

Unit .......................................................................................................... 8-C-20

Table 8-C.2.11 Summary Life-Cycle Cost Results for Design Line 11 Representative 

Unit .......................................................................................................... 8-C-21

Table 8-C.2.12 Summary Payback Period Results for Design Line 11 Representative 

Unit .......................................................................................................... 8-C-22

Table 8-C.2.13 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit .......................................................................................................... 8-C-23

Table 8-C.2.14 Summary Payback Period Results for Design Line 12 Representative 

Unit .......................................................................................................... 8-C-24

Table 8-C.2.15 Summary Life-Cycle Cost Results for Design Line 13 Representative 

Unit .......................................................................................................... 8-C-25

Table 8-C.2.16 Summary Payback Period Results for Design Line 13 Representative 

Unit .......................................................................................................... 8-C-26

LIST OF FIGURES

Figure 8-C.1.1 Design Line 1, Range of LCC Savings by Efficiency Level ..................... 8-C-1

Figure 8-C.1.2 Design Line 1, Range of Payback Periods by Efficiency Level ................ 8-C-2

Figure 8-C.1.3 Design Line 2, Range of LCC Savings by Efficiency Level .................... 8-C-3

Figure 8-C.1.4 Design Line 2, Range of Payback Periods by Efficiency Level ............... 8-C-4

Figure 8-C.1.5 Design Line 3, Range of LCC Savings by Efficiency Level .................... 8-C-5

Figure 8-C.1.6 Design Line 3, Range of Payback Periods by Efficiency Level ............... 8-C-6

Figure 8-C.1.7 Design Line 4, Range of LCC Savings by Efficiency Level .................... 8-C-7

Figure 8-C.1.8 Design Line 4, Range of Payback Periods by Efficiency Level ............... 8-C-8

Figure 8-C.1.9 Design Line 5, Range of LCC Savings by Efficiency Level ..................... 8-C-9

Figure 8-C.1.10 Design Line 5, Range of Payback Periods by Efficiency Level .............. 8-C-10
8-C-iii

Figure 8-C.2.1 Design Line 6, Range of LCC Savings by Efficiency Level ................... 8-C-11

Figure 8-C.2.2 Design Line 6, Range of Payback Periods by Efficiency Level .............. 8-C-12

Figure 8-C.2.3 Design Line 7, Range of LCC Savings by Efficiency Level ................... 8-C-13

Figure 8-C.2.4 Design Line 7, Range of Payback Periods by Efficiency Level .............. 8-C-14

Figure 8-C.2.5 Design Line 8, Range of LCC Savings by Efficiency Level ................... 8-C-15

Figure 8-C.2.6 Design Line 8, Range of Payback Periods by Efficiency Level .............. 8-C-16

Figure 8-C.2.7 Design Line 9, Range of LCC Savings by Efficiency Level ................... 8-C-17

Figure 8-C.2.8 Design Line 9, Range of Payback Periods by Efficiency Level .............. 8-C-18

Figure 8-C.2.9 Design Line 10, Range of LCC Savings by Efficiency Level ................. 8-C-19

Figure 8-C.2.10 Design Line 10, Range of Payback Periods by Efficiency Level ............ 8-C-20

Figure 8-C.2.11 Design Line 11, Range of Payback Periods by Efficiency Level ............ 8-C-22

Figure 8-C.2.12 Design Line 12, Range of LCC Savings by Efficiency Level ................. 8-C-23

Figure 8-C.2.13 Design Line 12, Range of Payback Periods by Efficiency Level ............ 8-C-24

Figure 8-C.2.14 Design Line 13, Range of LCC Savings by Efficiency Level ................. 8-C-25

Figure 8-C.2.15 Design Line 13, Range of Payback Periods by Efficiency Level ............ 8-C-26
8-C-1

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

8-C.1 LIFE-CYCLE COST & PAYBACK RESULTS FOR LIQUID-IMMERSED 

TRANSFORMERS, DESIGN LINES 1-5 

8-C.1.1 Design Line 1 Results

Figure 8-C.1.1 Design Line 1, Range of LCC Savings by Efficiency 

Level

Table 8-C.1.1 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.17% 99.27% 99.36% 99.46% 99.55% 99.60% 99.60%

Transformers with Net LCC 

Cost (%) 33.31% 0.69% 2.11% 4.29% 24.14% 54.07% 54.07%

Transformers with No Change 

in LCC (%) 14.22% 11.43% 9.58% 7.92% 0.08% 0.00% 0.00%

Transformers with Net LCC 

Benefit (%) 52.47% 87.88% 88.31% 87.79% 75.78% 45.93% 45.93%

Mean LCC Savings ($) 193 1062 1177 1238 818 37 37

-2000

-1000

0

1000

2000

3000

4000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-2

Figure 8-C.1.2 Design Line 1, Range of Payback Periods by 

Efficiency Level

Table 8-C.1.2 Summary Payback Period Results for Design Line 1 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 27.4 8.6 10.6 12.8 23.2 31.9 31.9

Transformers Unaffected by the 

TSL (%) 14.23% 11.44% 9.59% 7.93% 0.09% 0.00% 0.00%

Transformers having Well 

Defined Payback (%) 78.62% 88.56% 90.40% 91.91% 98.45% 98.80% 98.80%

Transformers having Undefined 

Payback (%) 7.15% 0.00% 0.01% 0.16% 1.46% 1.20% 1.20%

Mean Incremental First Cost ($) 1,381 1,371 1,405 1,449 1,562 1,692 1,692

Mean Operating Cost Savings 

($) 189 143 131 120 109 103 103

Payback of Average 

Transformer 7.3 9.6 10.8 12.0 14.3 16.4 16.4

0

20

40

60

80

100

120

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average Payback Period (years)

Efficiency Level

Design Line 1 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-3

8-C.1.2 Design Line 2 Results

Figure 8-C.1.3 Design Line 2, Range of LCC Savings by Efficiency 

Level

Table 8-C.1.3 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.02% 99.13% 99.24% 99.35% 99.46% 99.46% 99.46%

Transformers with Net LCC 

Cost (%) 37.95% 4.98% 9.39% 23.50% 63.31% 63.31% 63.31%

Transformers with No Change 

in LCC (%) 2.32% 1.42% 0.76% 0.47% 0.00% 0.00% 0.00%

Transformers with Net LCC 

Benefit (%) 59.73% 93.60% 89.85% 76.03% 36.69% 36.69% 36.69%

Mean LCC Savings ($) 84 508 490 363 -130 -130 -130

-1500

-1000

-500

0

500

1000

1500

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-4

Figure 8-C.1.4 Design Line 2, Range of Payback Periods by 

Efficiency Level

Table 8-C.1.4 Summary Payback Period Results for Design Line 2 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 26.5 13.7 16.7 20.6 30.4 30.4 30.4

Transformers Unaffected by the 

TSL (%) 2.33% 1.43% 0.77% 0.48% 0.01% 0.01% 0.01%

Transformers having Well 

Defined Payback (%) 94.66% 98.41% 99.08% 99.36% 99.84% 99.84% 99.84%

Transformers having Undefined 

Payback (%) 3.01% 0.16% 0.15% 0.16% 0.16% 0.16% 0.16%

Mean Incremental First Cost ($) 1,102 1,194 1,258 1,325 1,445 1,445 1,445

Mean Operating Cost Savings 

($) 124 93 84 78 73 73 73

Payback of Average 

Transformer 8.9 12.8 15.1 17.0 19.8 19.8 19.8

8-C.1.3 Design Line 3 Results

0

10

20

30

40

50

60

70

80

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-5

Figure 8-C.1.5 Design Line 3, Range of LCC Savings by Efficiency 

Level

Table 8-C.1.5 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.48% 99.54% 99.57% 99.61% 99.67% 99.73% 99.76%

Transformers with Net LCC 

Cost (%) 14.79% 9.65% 1.11% 1.26% 2.65% 10.94% 26.19%

Transformers with No Change 

in LCC (%) 42.55% 5.24% 5.21% 4.08% 2.71% 0.46% 0.00%

Transformers with Net LCC 

Benefit (%) 42.66% 85.11% 93.68% 94.66% 94.64% 88.60% 73.81%

Mean LCC Savings ($) 936 5705 7180 7662 8067 6560 4087

-10000

-5000

0

5000

10000

15000

20000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-6

Figure 8-C.1.6 Design Line 3, Range of Payback Periods by 

Efficiency Level

Table 8-C.1.6 Summary Payback Period Results for Design Line 3 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 18.3 12.2 8.1 9.1 11.1 17.3 22.7

Transformers Unaffected by the 

TSL (%) 42.56% 5.25% 5.22% 4.09% 2.72% 0.47% 0.00%

Transformers having Well 

Defined Payback (%) 51.23% 94.39% 94.63% 95.84% 97.14% 99.18% 99.72%

Transformers having Undefined 

Payback (%) 6.21% 0.36% 0.15% 0.07% 0.14% 0.35% 0.28%

Mean Incremental First Cost ($) 2,745 2,975 3,001 3,072 3,206 3,558 3,818

Mean Operating Cost Savings 

($) 1,161 851 779 731 668 589 561

Payback of Average 

Transformer 2.4 3.5 3.9 4.2 4.8 6.0 6.8

0

10

20

30

40

50

60

70

80

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-7

8-C.1.4 Design Line 4 Results

Figure 8-C.1.7 Design Line 4, Range of LCC Savings by Efficiency 

Level

Table 8-C.1.7 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.17% 99.27% 99.36% 99.46% 99.55% 99.60% 99.60%

Transformers with Net LCC 

Cost (%) 1.96% 0.78% 4.81% 7.32% 24.48% 39.80% 39.80%

Transformers with No Change 

in LCC (%) 38.42% 35.27% 20.64% 17.21% 2.82% 0.00% 0.00%

Transformers with Net LCC 

Benefit (%) 59.62% 63.95% 74.55% 75.47% 72.70% 60.20% 60.20%

Mean LCC Savings ($) 2310 2592 2974 3203 2777 1309 1309

-6000

-4000

-2000

0

2000

4000

6000

8000

10000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-8

Figure 8-C.1.8 Design Line 4, Range of Payback Periods by 

Efficiency Level

Table 8-C.1.8 Summary Payback Period Results for Design Line 4 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 5.8 4.8 9.4 11.8 23.7 33.5 33.5

Transformers Unaffected by the 

TSL (%) 38.43% 35.28% 20.65% 17.22% 2.83% 0.00% 0.00%

Transformers having Well 

Defined Payback (%) 61.17% 64.55% 79.32% 82.68% 96.41% 98.20% 98.20%

Transformers having Undefined 

Payback (%) 0.40% 0.17% 0.03% 0.10% 0.76% 1.80% 1.80%

Mean Incremental First Cost ($) 2,228 2,233 2,288 2,343 2,546 2,757 2,757

Mean Operating Cost Savings 

($) 430 416 386 364 318 298 298

Payback of Average 

Transformer 5.2 5.4 5.9 6.4 8.0 9.2 9.2

0

20

40

60

80

100

120

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-9

8-C.1.5 Design Line 5 Results

Figure 8-C.1.9 Design Line 5, Range of LCC Savings by Efficiency 

Level

Table 8-C.1.9 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.48% 99.54% 99.57% 99.61% 99.67% 99.73% 99.73%

Transformers with Net LCC 

Cost (%) 18.66% 0.67% 1.58% 2.91% 14.62% 74.36% 74.36%

Transformers with No Change 

in LCC (%) 20.89% 16.08% 14.14% 11.68% 0.34% 0.00% 0.00%

Transformers with Net LCC 

Benefit (%) 60.45% 83.25% 84.28% 85.41% 85.04% 25.64% 25.64%

Mean LCC Savings ($) 7828 19260 19625 20092 18798 -10105 -10105

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

50000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-10

Figure 8-C.1.10 Design Line 5, Range of Payback Periods by 

Efficiency Level

Table 8-C.1.10 Summary Payback Period Results for Design Line 5 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 16.5 6.5 7.5 8.3 17.8 39.9 39.9

Transformers Unaffected by the 

TSL (%) 20.90% 16.09% 14.15% 11.69% 0.35% 0.01% 0.01%

Transformers having Well 

Defined Payback (%) 72.14% 83.89% 85.84% 87.82% 98.15% 99.36% 99.36%

Transformers having Undefined 

Payback (%) 6.96% 0.02% 0.01% 0.49% 1.50% 0.63% 0.63%

Mean Incremental First Cost ($) 5,055 5,259 5,292 5,332 5,686 7,464 7,464

Mean Operating Cost Savings 

($) 2,815 2,222 2,184 2,148 1,974 1,715 1,715

Payback of Average 

Transformer 1.8 2.4 2.4 2.5 2.9 4.4 4.4

0

20

40

60

80

100

120

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-11

8-C.2 LIFE-CYCLE COST & PAYBACK RESULTS FOR DRY TYPE

TRANSFORMERS, DESIGN LINES 6-13

8-C.2.1 Design Line 6 Results

Figure 8-C.2.1 Design Line 6, Range of LCC Savings by Efficiency 

Level

Table 8-C.2.1 Summary Life-Cycle Cost Results for Design Line 6 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 98.23% 98.47% 98.60% 98.70% 98.93% 99.17% 99.40%

Transformers with Net LCC 

Cost (%) 21.54% 41.22% 48.35% 30.86% 35.34% 53.03% 90.53%

Transformers with No Change 

in LCC (%) 0.68% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%

Transformers with Net LCC 

Benefit (%) 77.78% 58.78% 51.65% 69.14% 64.66% 46.97% 9.47%

Mean LCC Savings ($) 86 101 57 136 157 29 -820

-2000

-1500

-1000

-500

0

500

1000

1500

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average LCC Savings ($)

Efficiency Level

Design Line 6 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-12

Figure 8-C.2.2 Design Line 6, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.2 Summary Payback Period Results for Design Line 6 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 12.5 19.2 19.7 15.0 15.6 18.8 33.0

Transformers Unaffected by the 

TSL (%) 0.69% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%

Transformers having Well 

Defined Payback (%) 95.74% 99.46% 99.98% 100% 100% 100% 100%

Transformers having Undefined 

Payback (%) 3.57% 0.53% 0.02% 0.00% 0.00% 0.00% 0.00%

Mean Incremental First Cost ($) 64 258 397 426 603 849 1,645

Mean Operating Cost Savings 

($) 9 24 31 39 53 63 72

Payback of Average 

Transformer 6.8 10.8 12.6 11.0 11.4 13.4 22.8

0

10

20

30

40

50

60

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average Payback Period (years)

Efficiency Level

Design Line 6 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-13

8-C.2.2 Design Line 7 Results

Figure 8-C.2.3 Design Line 7, Range of LCC Savings by Efficiency 

Level

Table 8-C.2.3 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 98.23% 98.47% 98.60% 98.70% 98.93% 99.17% 99.40%

Transformers with Net LCC 

Cost (%) 0.13% 10.18% 13.43% 15.57% 17.66% 19.85% 73.52%

Transformers with No Change 

in LCC (%) 63.63% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%

Transformers with Net LCC 

Benefit (%) 36.24% 89.82% 86.57% 84.43% 82.34% 80.15% 26.48%

Mean LCC Savings ($) 243 533 626 658 817 914 -783

-4000

-3000

-2000

-1000

0

1000

2000

3000

4000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-14

Figure 8-C.2.4 Design Line 7, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.4 Summary Payback Period Results for Design Line 7 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 0.3 7.8 9.8 11.2 12.3 12.7 24.0

Transformers Unaffected by the 

TSL (%) 36.19% 99.76% 100% 100% 100% 100% 100%

Transformers having Well 

Defined Payback (%) 63.64% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%

Transformers having Undefined 

Payback (%) 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%

Mean Incremental First Cost ($) -4 164 406 654 1,143 1,450 3,296

Mean Operating Cost Savings 

($) 14 43 66 87 132 160 199

Payback of Average 

Transformer -0.3 3.8 6.2 7.6 8.7 9.0 16.5

0

5

10

15

20

25

30

35

40

45

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6 CSL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-15

8-C.2.3 Design Line 8 Results

Figure 8-C.2.5 Design Line 8, Range of LCC Savings by Efficiency 

Level

Table 8-C.2.5 Summary Life-Cycle Cost Results for Design Line 8 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 98.80% 99.02% 99.19% 99.41% 99.59% NA NA

Transformers with Net LCC 

Cost (%) 5.10% 4.33% 15.80% 10.16% 53.08% NA NA

Transformers with No Change 

in LCC (%) 0.00% 0.00% 0.00% 0.00% 0.00% NA NA

Transformers with Net LCC 

Benefit (%) 94.90% 95.67% 84.20% 89.84% 46.92% NA NA

Mean LCC Savings ($) 1376 2626 2396 3761 227 NA NA

-8000

-6000

-4000

-2000

0

2000

4000

6000

8000

10000

12000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average LCC Savings ($)

Efficiency Level

Design Line 8 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-16

Figure 8-C.2.6 Design Line 8, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.6 Summary Payback Period Results for Design Line 8 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 6.9 6.9 11.9 10.7 18.6 NA NA

Transformers Unaffected by the 

TSL (%) 99.96% 100% 100% 100% 100% NA NA

Transformers having Well 

Defined Payback (%) 0.00% 0.00% 0.00% 0.00% 0.00% NA NA

Transformers having Undefined 

Payback (%) 0.00% 0.00% 0.00% 0.00% 0.00% NA NA

Mean Incremental First Cost ($) 490 1,169 3,067 3,896 7,935 NA NA

Mean Operating Cost Savings 

($) 116 238 371 510 610 NA NA

Payback of Average 

Transformer 4.2 4.9 8.3 7.6 13.0 NA NA

8-C.2.4 Design Line 9 Results

0

5

10

15

20

25

30

35

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average Payback Period (years)

Efficiency Level

Design Line 8 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-17

Figure 8-C.2.7 Design Line 9, Range of LCC Savings by Efficiency 

Level

Table 8-C.2.7 Summary Life-Cycle Cost Results for Design Line 9 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 98.97% 99.12% 99.28% 99.43% 99.58% NA NA

Transformers with Net LCC 

Cost (%) 23.00% 24.31% 20.05% 26.88% 66.22% NA NA

Transformers with No Change 

in LCC (%) 0.00% 0.00% 0.00% 0.00% 0.00% NA NA

Transformers with Net LCC 

Benefit (%) 77.00% 75.69% 79.95% 73.12% 33.78% NA NA

Mean LCC Savings ($) 1383 1455 2313 2557 -1572 NA NA

-15000

-10000

-5000

0

5000

10000

15000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average LCC Savings ($)

Efficiency Level

Design Line 9 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-18

Figure 8-C.2.8 Design Line 9, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.8 Summary Payback Period Results for Design Line 9 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 13.6 13.6 13.0 14.1 21.7 NA NA

Transformers Unaffected by the 

TSL (%) 1.51% 0.00% 0.00% 0.00% 0.00% NA NA

Transformers having Well 

Defined Payback (%) 96.99% 100% 100% 100% 100% NA NA

Transformers having Undefined 

Payback (%) 1.50% 0.00% 0.00% 0.00% 0.00% NA NA

Mean Incremental First Cost ($) 1,072 2,666 4,150 5,833 10,709 NA NA

Mean Operating Cost Savings 

($) 159 287 446 586 716 NA NA

Payback of Average 

Transformer 6.7 9.3 9.3 9.9 14.9 NA NA

8-C.2.5 Design Line 10 Results

0

5

10

15

20

25

30

35

40

45

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average Payback Period (years)

Efficiency Level

Design Line 9 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-19

Figure 8-C.2.9 Design Line 10, Range of LCC Savings by Efficiency 

Level

Table 8-C.2.9 Summary Life-Cycle Cost Results for Design Line 10 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.31% 99.40% 99.50% 99.59% 99.68% NA NA

Transformers with Net LCC 

Cost (%) 48.05% 21.86% 10.43% 11.90% 71.94% NA NA

Transformers with No Change 

in LCC (%) 0.00% 0.00% 0.00% 0.00% 0.00% NA NA

Transformers with Net LCC 

Benefit (%) 51.95% 78.14% 89.57% 88.10% 28.06% NA NA

Mean LCC Savings ($) 2417 7604 12276 12988 -7204 NA NA

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average LCC Savings ($)

Efficiency Level

Design Line 10 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-20

Figure 8-C.2.10 Design Line 10, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.10 Summary Payback Period Results for Design Line 10 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 18.5 13.3 10.4 11.1 22.5 NA NA

Transformers Unaffected by the 

TSL (%) 0.45% 0.55% 0.00% 0.00% 0.00% NA NA

Transformers having Well 

Defined Payback (%) 99.11% 98.91% 100% 100% 100% NA NA

Transformers having Undefined 

Payback (%) 0.44% 0.54% 0.00% 0.00% 0.00% NA NA

Mean Incremental First Cost ($) 6,200 7,990 11,418 14,429 34,282 NA NA

Mean Operating Cost Savings 

($) 609 1,049 1,577 1,846 2,193 NA NA

Payback of Average 

Transformer 10.2 7.6 7.2 7.8 15.6 NA NA

8-C.2.6 Design Line 11 Results

0

5

10

15

20

25

30

35

40

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average Payback Period (years)

Efficiency Level

Design Line 10 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-21

Design Line 11, Range of LCC Savings by Efficiency Level

Table 8-C.2.11 Summary Life-Cycle Cost Results for Design Line 11 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 98.84% 99.00% 99.17% 99.33% 99.50% NA NA

Transformers with Net LCC 

Cost (%) 35.22% 21.94% 33.44% 51.09% 94.38% NA NA

Transformers with No Change 

in LCC (%) 0.00% 0.00% 0.00% 0.00% 0.00% NA NA

Transformers with Net LCC 

Benefit (%) 64.78% 78.06% 66.56% 48.91% 5.62% NA NA

Mean LCC Savings ($) 563 1943 1318 197 -7054 NA NA

-15000

-10000

-5000

0

5000

10000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average LCC Savings ($)

Efficiency Level

Design Line 11 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-22

Figure 8-C.2.11 Design Line 11, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.12 Summary Payback Period Results for Design Line 11 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 17.5 13.2 15.3 18.5 34.4 NA NA

Transformers Unaffected by the 

TSL (%) 4.34% 0.06% 0.00% 0.00% 0.00% NA NA

Transformers having Well 

Defined Payback (%) 91.33% 99.89% 100% 100% 100% NA NA

Transformers having Undefined 

Payback (%) 4.33% 0.05% 0.00% 0.00% 0.00% NA NA

Mean Incremental First Cost ($) 1,109 2,868 4,428 6,183 12,395 NA NA

Mean Operating Cost Savings 

($) 117 328 408 476 529 NA NA

Payback of Average 

Transformer 9.5 8.7 10.8 13.0 23.4 NA NA

8-C.2.7 Design Line 12 Results

0

10

20

30

40

50

60

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average Payback Period (years)

Efficiency Level

Design Line 11 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-23

Figure 8-C.2.12 Design Line 12, Range of LCC Savings by Efficiency 

Level

Table 8-C.2.13 Summary Life-Cycle Cost Results for Design Line 12 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.21% 99.30% 99.39% 99.48% 99.57% 99.66% NA

Transformers with Net LCC 

Cost (%) 58.40% 33.67% 24.41% 19.85% 37.29% 88.00% NA

Transformers with No Change 

in LCC (%) 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% NA

Transformers with Net LCC 

Benefit (%) 41.60% 66.33% 75.59% 80.15% 62.71% 12.00% NA

Mean LCC Savings ($) -168 2644 7474 9063 4962 -18,429 NA

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-24

Figure 8-C.2.13 Design Line 12, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.14 Summary Payback Period Results for Design Line 12 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 23.1 15.6 13.8 13.0 16.0 27.6 NA

Transformers Unaffected by the 

TSL (%) 1.32% 0.23% 0.02% 0.00% 0.00% 0.00% NA

Transformers having Well 

Defined Payback (%) 97.37% 99.55% 99.97% 100% 100% 100% NA

Transformers having Undefined 

Payback (%) 1.31% 0.22% 0.01% 0.00% 0.00% 0.00% NA

Mean Incremental First Cost ($) 4,713 8,407 13,585 15,426 23,146 44,114 NA

Mean Operating Cost Savings 

($) 352 799 1,468 1,699 2,049 2,298 NA

Payback of Average 

Transformer 13.4 10.5 9.3 9.1 11.3 19.2 NA

8-C.2.8 Design Line 13 Results

0

10

20

30

40

50

60

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5 CSL 6

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-25

Figure 8-C.2.14 Design Line 13, Range of LCC Savings by Efficiency 

Level

Table 8-C.2.15 Summary Life-Cycle Cost Results for Design Line 13 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7 

Efficiency (%) 99.25% 99.35% 99.46% 99.56% 99.66% NA NA

Transformers with Net LCC 

Cost (%) 25.94% 35.56% 24.35% 23.89% 72.07% NA NA

Transformers with No Change 

in LCC (%) 0.00% 0.00% 0.00% 0.00% 0.00% NA NA

Transformers with Net LCC 

Benefit (%) 74.06% 64.44% 75.65% 76.11% 27.93% NA NA

Mean LCC Savings ($) 3050 4076 10600 11919 -9581 NA NA

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

50000

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average LCC Savings ($)

Efficiency Level

Design Line 13 Average LCC Savings

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average
8-C-26

Figure 8-C.2.15 Design Line 13, Range of Payback Periods by 

Efficiency Level

Table 8-C.2.16 Summary Payback Period Results for Design Line 13 Representative Unit

Candidate Standard Level

1 2 3 4 5 6 7

Mean Payback (Years) 14.4 17.4 13.7 13.8 21.8 NA NA

Transformers Unaffected by the 

TSL (%) 0.45% 1.17% 0.01% 0.00% 0.00% NA NA

Transformers having Well 

Defined Payback (%) 99.11% 97.67% 99.99% 100% 100% NA NA

Transformers having Undefined 

Payback (%) 0.44% 1.16% 0.00% 0.00% 0.00% NA NA

Mean Incremental First Cost ($) 5,878 13,325 18,456 25,644 48,706 NA NA

Mean Operating Cost Savings 

($) 621 1,256 2,018 2,641 3,158 NA NA

Payback of Average 

Transformer 9.5 10.6 9.1 9.7 15.4 NA NA

0

5

10

15

20

25

30

35

40

CSL 1 CSL 2 CSL 3 CSL 4 CSL 5

Average Payback Period (years)

Efficiency Level

Design Line 13 Average Payback Period

Average; Median; Box 25%-75%; Whisker 5%-95%

median

average