8D-i

APPENDIX 8D. LIFE-CYCLE COST SENSITIVITY ANALYSIS

TABLE OF CONTENTS

8D.1 DESIGN LINE 1 RESULTS .................................................................................. 8D-1

8D.1.1 Design Line 1 Results, Baseline Scenario .............................................................. 8D-2

8D.1.2 Design Line 1 Results, Low A & B Distribution Scenario..................................... 8D-4

8D.1.3 Design Line 1 Results, High A & B Distribution Scenario .................................... 8D-6

8D.1.4 Design Line 1 Results, Low Loading Scenario ...................................................... 8D-8

8D.1.5 Design Line 1 Results, High Loading Scenario.................................................... 8D-10

8D.1.6 Design Line 1 Results, Low Electricity Price Scenario........................................ 8D-12

8D.1.7 Design Line 1 Results, High Electricity Price Scenario ....................................... 8D-14

8D.1.8 Design Line 1 Results, No Load Growth Scenario............................................... 8D-16

8D.1.9 Design Line 1 Results, High Load Growth Scenario............................................ 8D-18

8D.1.10 Design Line 1 Results, Low Equipment Price Scenario....................................... 8D-20

8D.1.11 Design Line 1 Results, High Equipment Price Scenario ...................................... 8D-22

8D.1.12 Design Line 1 Results, Low Electricity Price Trend Scenario ............................. 8D-24

8D.1.13 Design Line 1 Results, High Electricity Price Trend Scenario............................. 8D-26

8D.1.14 Design Line 1 Results, Materials Exclusion Scenario.......................................... 8D-28

8D.2 DESIGN LINE 2 RESULTS ................................................................................ 8D-30

8D.2.1 Design Line 2 Results, Baseline Scenario ............................................................ 8D-31

8D.2.2 Design Line 2 Results, Low A & B Distribution Scenario................................... 8D-33

8D.2.3 Design Line 2 Results, High A & B Distribution Scenario .................................. 8D-35

8D.2.4 Design Line 2 Results, Low Loading Scenario .................................................... 8D-37

8D.2.5 Design Line 2 Results, High Loading Scenario.................................................... 8D-39

8D.2.6 Design Line 2 Results, Low Electricity Price Scenario........................................ 8D-41

8D.2.7 Design Line 2 Results, High Electricity Price Scenario ....................................... 8D-43

8D.2.8 Design Line 2 Results, No Load Growth Scenario............................................... 8D-45

8D.2.9 Design Line 2 Results, High Load Growth Scenario............................................ 8D-47

8D.2.10 Design Line 2 Results, Low Equipment Price Scenario....................................... 8D-49

8D.2.11 Design Line 2 Results, High Equipment Price Scenario ...................................... 8D-51

8D.2.12 Design Line 2 Results, Low Electricity Price Trend Scenario ............................. 8D-53

8D.2.13 Design Line 2 Results, High Electricity Price Trend Scenario............................. 8D-55

8D.2.14 Design Line 2 Results, Materials Exclusion Scenario.......................................... 8D-57

8D.3 DESIGN LINE 3 RESULTS ................................................................................ 8D-59

8D.3.1 Design Line 3 Results, Baseline Scenario ............................................................ 8D-60

8D.3.2 Design Line 3 Results, Low A & B Distribution Scenario................................... 8D-62

8D.3.3 Design Line 3 Results, High A & B Distribution Scenario .................................. 8D-64

8D.3.4 Design Line 3 Results, Low Loading Scenario .................................................... 8D-66

8D.3.5 Design Line 3 Results, High Loading Scenario.................................................... 8D-68

8D.3.6 Design Line 3 Results, Low Electricity Price Scenario........................................ 8D-70

8D.3.7 Design Line 3 Results, High Electricity Price Scenario ....................................... 8D-72

8D.3.8 Design Line 3 Results, No Load Growth Scenario............................................... 8D-74

8D.3.9 Design Line 3 Results, High Load Growth Scenario............................................ 8D-76

8D.3.10 Design Line 3 Results, Low Equipment Price Scenario....................................... 8D-78
8D-ii

8D.3.11 Design Line 3 Results, High Equipment Price Scenario ...................................... 8D-80

8D.3.12 Design Line 3 Results, Low Electricity Price Trend Scenario ............................. 8D-82

8D.3.13 Design Line 3 Results, High Electricity Price Trend Scenario............................. 8D-84

8D.3.14 Design Line 3 Results, Materials Exclusion Scenario.......................................... 8D-86

8D.4 DESIGN LINE 4 RESULTS ................................................................................ 8D-88

8D.4.1 Design Line 4 Results, Baseline Scenario ............................................................ 8D-89

8D.4.2 Design Line 4 Results, Low A & B Distribution Scenario................................... 8D-91

8D.4.3 Design Line 4 Results, High A & B Distribution Scenario .................................. 8D-93

8D.4.4 Design Line 4 Results, Low Loading Scenario .................................................... 8D-95

8D.4.5 Design Line 4 Results, High Loading Scenario.................................................... 8D-97

8D.4.6 Design Line 4 Results, Low Electricity Price Scenario........................................ 8D-99

8D.4.7 Design Line 4 Results, High Electricity Price Scenario ..................................... 8D-101

8D.4.8 Design Line 4 Results, No Load Growth Scenario............................................. 8D-103

8D.4.9 Design Line 4 Results, High Load Growth Scenario.......................................... 8D-105

8D.4.10 Design Line 4 Results, Low Equipment Price Scenario..................................... 8D-107

8D.4.11 Design Line 4 Results, High Equipment Price Scenario .................................... 8D-109

8D.4.12 Design Line 4 Results, Low Electricity Price Trend Scenario ........................... 8D-111

8D.4.13 Design Line 4 Results, High Electricity Price Trend Scenario........................... 8D-113

8D.4.14 Design Line 4 Results, Materials Exclusion Scenario........................................ 8D-115

8D.5 DESIGN LINE 5 RESULTS .............................................................................. 8D-117

8D.5.1 Design Line 5 Results, Baseline Scenario .......................................................... 8D-118

8D.5.2 Design Line 5 Results, Low A & B Distribution Scenario................................. 8D-120

8D.5.3 Design Line 5 Results, High A & B Distribution Scenario ................................ 8D-122

8D.5.4 Design Line 5 Results, Low Loading Scenario .................................................. 8D-124

8D.5.5 Design Line 5 Results, High Loading Scenario.................................................. 8D-126

8D.5.6 Design Line 5 Results, Low Electricity Price Scenario...................................... 8D-128

8D.5.7 Design Line 5 Results, High Electricity Price Scenario ..................................... 8D-130

8D.5.8 Design Line 5 Results, No Load Growth Scenario............................................. 8D-132

8D.5.9 Design Line 5 Results, High Load Growth Scenario.......................................... 8D-134

8D.5.10 Design Line 5 Results, Low Equipment Price Scenario..................................... 8D-136

8D.5.11 Design Line 5 Results, High Equipment Price Scenario .................................... 8D-138

8D.5.12 Design Line 5 Results, Low Electricity Price Trend Scenario ........................... 8D-140

8D.5.13 Design Line 5 Results, High Electricity Price Trend Scenario........................... 8D-142

8D.5.14 Design Line 5 Results, Materials Exclusion Scenario........................................ 8D-144

8D.6 DESIGN LINE 7 RESULTS .............................................................................. 8D-146

8D.6.1 Design Line 7 Results, Baseline Scenario .......................................................... 8D-147

8D.6.2 Design Line 7 Results, Low A & B Distribution Scenario................................. 8D-149

8D.6.3 Design Line 7 Results, High A & B Distribution Scenario ................................ 8D-151

8D.6.4 Design Line 7 Results, Low Loading Scenario .................................................. 8D-153

8D.6.5 Design Line 7 Results, High Loading Scenario.................................................. 8D-155

8D.6.6 Design Line 7 Results, Low Electricity Price Scenario...................................... 8D-157

8D.6.7 Design Line 7 Results, High Electricity Price Scenario ..................................... 8D-159

8D.6.8 Design Line 7 Results, No Load Growth Scenario............................................. 8D-161

8D.6.9 Design Line 7 Results, High Load Growth Scenario.......................................... 8D-163

8D.6.10 Design Line 7 Results, Low Equipment Price Scenario..................................... 8D-165

8D.6.11 Design Line 7 Results, High Equipment Price Scenario .................................... 8D-167
8D-iii

8D.6.12 Design Line 7 Results, Low Electricity Price Trend Scenario ........................... 8D-169

8D.6.13 Design Line 7 Results, High Electricity Price Trend Scenario........................... 8D-171

8D.6.14 Design Line 7 Results, Materials Exclusion Scenario........................................ 8D-173

8D.7 DESIGN LINE 12 RESULTS ............................................................................ 8D-175

8D.7.1 Design Line 12 Results, Baseline Scenario ........................................................ 8D-176

8D.7.2 Design Line 12 Results, Low A & B Distribution Scenario............................... 8D-178

8D.7.3 Design Line 12 Results, High A & B Distribution Scenario .............................. 8D-180

8D.7.4 Design Line 12 Results, Low Loading Scenario ................................................ 8D-182

8D.7.5 Design Line 12 Results, High Loading Scenario................................................ 8D-184

8D.7.6 Design Line 12 Results, Low Electricity Price Scenario.................................... 8D-186

8D.7.7 Design Line 12 Results, High Electricity Price Scenario ................................... 8D-188

8D.7.8 Design Line 12 Results, Medium Load Growth Scenario .................................. 8D-190

8D.7.9 Design Line 12 Results, High Load Growth Scenario........................................ 8D-192

8D.7.10 Design Line 12 Results, Low Equipment Price Scenario................................... 8D-194

8D.7.11 Design Line 12 Results, High Equipment Price Scenario .................................. 8D-196

8D.7.12 Design Line 12 Results, Low Electricity Price Trend Scenario ......................... 8D-198

8D.7.13 Design Line 12 Results, High Electricity Price Trend Scenario......................... 8D-200

8D.7.14 Design Line 12 Results, Materials Exclusion Scenario...................................... 8D-202

LIST OF TABLES

Table 8D.1.1 LCC Savings ($), Summary Table for Design Line 1 ................................ 8D-1

Table 8D.1.2 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, Baseline Scenario............................................................................... 8D-2

Table 8D.1.3 Summary Payback Period Results for Design Line 1 Representative 

Unit, Baseline Scenario............................................................................... 8D-2

Table 8D.1.4 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, Low A & B Distribution Scenario ..................................................... 8D-4

Table 8D.1.5 Summary Payback Period Results for Design Line 1 Representative 

Unit, Low A & B Distribution Scenario ..................................................... 8D-4

Table 8D.1.6 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, High A & B Distribution Scenario .................................................... 8D-6

Table 8D.1.7 Summary Payback Period Results for Design Line 1 Representative 

Unit, High A & B Distribution Scenario .................................................... 8D-6

Table 8D.1.8 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, Low Loading Scenario....................................................................... 8D-8

Table 8D.1.9 Summary Payback Period Results for Design Line 1 Representative 

Unit, Low Loading Scenario....................................................................... 8D-8

Table 8D.1.10 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, High Loading Scenario .................................................................... 8D-10

Table 8D.1.11 Summary Payback Period Results for Design Line 1 Representative 

Unit, High Loading Scenario .................................................................... 8D-10

Table 8D.1.12 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-12
8D-iv

Table 8D.1.13 Summary Payback Period Results for Design Line 1 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-12

Table 8D.1.14 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-14

Table 8D.1.15 Summary Payback Period Results for Design Line 1 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-14

Table 8D.1.16 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-16

Table 8D.1.17 Summary Payback Period Results for Design Line 1 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-16

Table 8D.1.18 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, High Load Growth Scenario............................................................ 8D-18

Table 8D.1.19 Summary Payback Period Results for Design Line 1 Representative 

Unit, High Load Growth Scenario............................................................ 8D-18

Table 8D.1.20 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-20

Table 8D.1.21 Summary Payback Period Results for Design Line 1 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-20

Table 8D.1.22 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-22

Table 8D.1.23 Summary Payback Period Results for Design Line 1 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-22

Table 8D.1.24 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-24

Table 8D.1.25 Summary Payback Period Results for Design Line 1 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-24

Table 8D.1.26 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-26

Table 8D.1.27 Summary Payback Period Results for Design Line 1 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-26

Table 8D.1.28 Summary Life-Cycle Cost Results for Design Line 1 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-28

Table 8D.1.29 Summary Payback Period Results for Design Line 1 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-28

Table 8D.2.1 LCC Savings ($), Summary Table for Design Line 2 .............................. 8D-30

Table 8D.2.2 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, Baseline Scenario............................................................................. 8D-31

Table 8D.2.3 Summary Payback Period Results for Design Line 2 Representative 

Unit, Baseline Scenario............................................................................. 8D-31

Table 8D.2.4 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-33

Table 8D.2.5 Summary Payback Period Results for Design Line 2 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-33

Table 8D.2.6 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-35
8D-v

Table 8D.2.7 Summary Payback Period Results for Design Line 2 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-35

Table 8D.2.8 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, Low Loading Scenario..................................................................... 8D-37

Table 8D.2.9 Summary Payback Period Results for Design Line 2 Representative 

Unit, Low Loading Scenario..................................................................... 8D-37

Table 8D.2.10 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, High Loading Scenario .................................................................... 8D-39

Table 8D.2.11 Summary Payback Period Results for Design Line 2 Representative 

Unit, High Loading Scenario .................................................................... 8D-39

Table 8D.2.12 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-41

Table 8D.2.13 Summary Payback Period Results for Design Line 2 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-41

Table 8D.2.14 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-43

Table 8D.2.15 Summary Payback Period Results for Design Line 2 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-43

Table 8D.2.16 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-45

Table 8D.2.17 Summary Payback Period Results for Design Line 2 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-45

Table 8D.2.18 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, High Load Growth Scenario............................................................ 8D-47

Table 8D.2.19 Summary Payback Period Results for Design Line 2 Representative 

Unit, High Load Growth Scenario............................................................ 8D-47

Table 8D.2.20 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-49

Table 8D.2.21 Summary Payback Period Results for Design Line 2 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-49

Table 8D.2.22 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-51

Table 8D.2.23 Summary Payback Period Results for Design Line 2 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-51

Table 8D.2.24 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-53

Table 8D.2.25 Summary Payback Period Results for Design Line 2 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-53

Table 8D.2.26 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-55

Table 8D.2.27 Summary Payback Period Results for Design Line 2 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-55

Table 8D.2.28 Summary Life-Cycle Cost Results for Design Line 2 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-57

Table 8D.2.29 Summary Payback Period Results for Design Line 2 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-57
8D-vi

Table 8D.3.1 LCC Savings ($), Summary Table for Design Line 3 .............................. 8D-59

Table 8D.3.2 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, Baseline Scenario............................................................................. 8D-60

Table 8D.3.3 Summary Payback Period Results for Design Line 3 Representative 

Unit, Baseline Scenario............................................................................. 8D-60

Table 8D.3.4 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-62

Table 8D.3.5 Summary Payback Period Results for Design Line 3 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-62

Table 8D.3.6 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-64

Table 8D.3.7 Summary Payback Period Results for Design Line 3 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-64

Table 8D.3.8 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, Low Loading Scenario..................................................................... 8D-66

Table 8D.3.9 Summary Payback Period Results for Design Line 3 Representative 

Unit, Low Loading Scenario..................................................................... 8D-66

Table 8D.3.10 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, High Loading Scenario .................................................................... 8D-68

Table 8D.3.11 Summary Payback Period Results for Design Line 3 Representative 

Unit, High Loading Scenario .................................................................... 8D-68

Table 8D.3.12 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-70

Table 8D.3.13 Summary Payback Period Results for Design Line 3 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-70

Table 8D.3.14 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-72

Table 8D.3.15 Summary Payback Period Results for Design Line 3 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-72

Table 8D.3.16 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-74

Table 8D.3.17 Summary Payback Period Results for Design Line 3 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-74

Table 8D.3.18 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, High Load Growth Scenario............................................................ 8D-76

Table 8D.3.19 Summary Payback Period Results for Design Line 3 Representative 

Unit, High Load Growth Scenario............................................................ 8D-76

Table 8D.3.20 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-78

Table 8D.3.21 Summary Payback Period Results for Design Line 3 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-78

Table 8D.3.22 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-80

Table 8D.3.23 Summary Payback Period Results for Design Line 3 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-80
8D-vii

Table 8D.3.24 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-82

Table 8D.3.25 Summary Payback Period Results for Design Line 3 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-82

Table 8D.3.26 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-84

Table 8D.3.27 Summary Payback Period Results for Design Line 3 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-84

Table 8D.3.28 Summary Life-Cycle Cost Results for Design Line 3 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-86

Table 8D.3.29 Summary Payback Period Results for Design Line 3 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-86

Table 8D.4.1 LCC Savings ($), Summary Table for Design Line 4 .............................. 8D-88

Table 8D.4.2 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, Baseline Scenario............................................................................. 8D-89

Table 8D.4.3 Summary Payback Period Results for Design Line 4 Representative 

Unit, Baseline Scenario............................................................................. 8D-89

Table 8D.4.4 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-91

Table 8D.4.5 Summary Payback Period Results for Design Line 4 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-91

Table 8D.4.6 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-93

Table 8D.4.7 Summary Payback Period Results for Design Line 4 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-93

Table 8D.4.8 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, Low Loading Scenario..................................................................... 8D-95

Table 8D.4.9 Summary Payback Period Results for Design Line 4 Representative 

Unit, Low Loading Scenario..................................................................... 8D-95

Table 8D.4.10 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, High Loading Scenario .................................................................... 8D-97

Table 8D.4.11 Summary Payback Period Results for Design Line 4 Representative 

Unit, High Loading Scenario .................................................................... 8D-97

Table 8D.4.12 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-99

Table 8D.4.13 Summary Payback Period Results for Design Line 4 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-99

Table 8D.4.14 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-101

Table 8D.4.15 Summary Payback Period Results for Design Line 4 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-101

Table 8D.4.16 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-103

Table 8D.4.17 Summary Payback Period Results for Design Line 4 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-103
8D-viii

Table 8D.4.18 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-105

Table 8D.4.19 Summary Payback Period Results for Design Line 4 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-105

Table 8D.4.20 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-107

Table 8D.4.21 Summary Payback Period Results for Design Line 4 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-107

Table 8D.4.22 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-109

Table 8D.4.23 Summary Payback Period Results for Design Line 4 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-109

Table 8D.4.24 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-111

Table 8D.4.25 Summary Payback Period Results for Design Line 4 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-111

Table 8D.4.26 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-113

Table 8D.4.27 Summary Payback Period Results for Design Line 4 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-113

Table 8D.4.28 Summary Life-Cycle Cost Results for Design Line 4 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-115

Table 8D.4.29 Summary Payback Period Results for Design Line 4 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-115

Table 8D.5.1 LCC Savings ($), Summary Table for Design Line 5 ............................ 8D-117

Table 8D.5.2 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, Baseline Scenario........................................................................... 8D-118

Table 8D.5.3 Summary Payback Period Results for Design Line 5 Representative 

Unit, Baseline Scenario........................................................................... 8D-118

Table 8D.5.4 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-120

Table 8D.5.5 Summary Payback Period Results for Design Line 5 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-120

Table 8D.5.6 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-122

Table 8D.5.7 Summary Payback Period Results for Design Line 5 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-122

Table 8D.5.8 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, Low Loading Scenario................................................................... 8D-124

Table 8D.5.9 Summary Payback Period Results for Design Line 5 Representative 

Unit, Low Loading Scenario................................................................... 8D-124

Table 8D.5.10 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, High Loading Scenario .................................................................. 8D-126

Table 8D.5.11 Summary Payback Period Results for Design Line 5 Representative 

Unit, High Loading Scenario .................................................................. 8D-126
8D-ix

Table 8D.5.12 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-128

Table 8D.5.13 Summary Payback Period Results for Design Line 5 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-128

Table 8D.5.14 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-130

Table 8D.5.15 Summary Payback Period Results for Design Line 5 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-130

Table 8D.5.16 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-132

Table 8D.5.17 Summary Payback Period Results for Design Line 5 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-132

Table 8D.5.18 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-134

Table 8D.5.19 Summary Payback Period Results for Design Line 5 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-134

Table 8D.5.20 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-136

Table 8D.5.21 Summary Payback Period Results for Design Line 5 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-136

Table 8D.5.22 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-138

Table 8D.5.23 Summary Payback Period Results for Design Line 5 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-138

Table 8D.5.24 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-140

Table 8D.5.25 Summary Payback Period Results for Design Line 5 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-140

Table 8D.5.26 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-142

Table 8D.5.27 Summary Payback Period Results for Design Line 5 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-142

Table 8D.5.28 Summary Life-Cycle Cost Results for Design Line 5 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-144

Table 8D.5.29 Summary Payback Period Results for Design Line 5 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-144

Table 8D.6.1 Average LCC Savings ($), Summary Table for Design Line 7.............. 8D-146

Table 8D.6.2 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, Baseline Scenario........................................................................... 8D-147

Table 8D.6.3 Summary Payback Period Results for Design Line 7 Representative 

Unit, Baseline Scenario........................................................................... 8D-147

Table 8D.6.4 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-149

Table 8D.6.5 Summary Payback Period Results for Design Line 7 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-149
8D-x

Table 8D.6.6 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-151

Table 8D.6.7 Summary Payback Period Results for Design Line 7 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-151

Table 8D.6.8 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, Low Loading Scenario................................................................... 8D-153

Table 8D.6.9 Summary Payback Period Results for Design Line 7 Representative 

Unit, Low Loading Scenario................................................................... 8D-153

Table 8D.6.10 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, High Loading Scenario .................................................................. 8D-155

Table 8D.6.11 Summary Payback Period Results for Design Line 7 Representative 

Unit, High Loading Scenario .................................................................. 8D-155

Table 8D.6.12 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-157

Table 8D.6.13 Summary Payback Period Results for Design Line 7 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-157

Table 8D.6.14 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-159

Table 8D.6.15 Summary Payback Period Results for Design Line 7 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-159

Table 8D.6.16 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-161

Table 8D.6.17 Summary Payback Period Results for Design Line 7 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-161

Table 8D.6.18 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-163

Table 8D.6.19 Summary Payback Period Results for Design Line 7 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-163

Table 8D.6.20 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-165

Table 8D.6.21 Summary Payback Period Results for Design Line 7 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-165

Table 8D.6.22 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-167

Table 8D.6.23 Summary Payback Period Results for Design Line 7 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-167

Table 8D.6.24 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-169

Table 8D.6.25 Summary Payback Period Results for Design Line 7 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-169

Table 8D.6.26 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-171

Table 8D.6.27 Summary Payback Period Results for Design Line 7 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-171

Table 8D.6.28 Summary Life-Cycle Cost Results for Design Line 7 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-173
8D-xi

Table 8D.6.29 Summary Payback Period Results for Design Line 7 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-173

Table 8D.7.1 LCC Savings ($), Summary Table for Design Line 12 .......................... 8D-175

Table 8D.7.2 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Baseline Scenario........................................................................... 8D-176

Table 8D.7.3 Summary Payback Period Results for Design Line 12 Representative 

Unit, Baseline Scenario........................................................................... 8D-176

Table 8D.7.4 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-178

Table 8D.7.5 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-178

Table 8D.7.6 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-180

Table 8D.7.7 Summary Payback Period Results for Design Line 12 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-180

Table 8D.7.8 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Loading Scenario................................................................... 8D-182

Table 8D.7.9 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Loading Scenario................................................................... 8D-182

Table 8D.7.10 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Loading Scenario .................................................................. 8D-184

Table 8D.7.11 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Loading Scenario .................................................................. 8D-184

Table 8D.7.12 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-186

Table 8D.7.13 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-186

Table 8D.7.14 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-188

Table 8D.7.15 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-188

Table 8D.7.16 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Medium Load Growth Scenario .................................................... 8D-190

Table 8D.7.17 Summary Payback Period Results for Design Line 12 Representative 

Unit, Medium Load Growth Scenario .................................................... 8D-190

Table 8D.7.18 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-192

Table 8D.7.19 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-192

Table 8D.7.20 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-194

Table 8D.7.21 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-194

Table 8D.7.22 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-196
8D-xii

Table 8D.7.23 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-196

Table 8D.7.24 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-198

Table 8D.7.25 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-198

Table 8D.7.26 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-200

Table 8D.7.27 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-200

Table 8D.7.28 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-202

Table 8D.7.29 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Materials Exclusion Scenario ............................................... 8D-202

LIST OF FIGURES

Figure 8D.1.1 Average LCC Savings ($) by Scenario for Design Line 1.......................... 8D-1

Figure 8D.1.2 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, Baseline Scenario............................................................................... 8D-3

Figure 8D.1.3 Average Payback Period for Design Line 1 Representative Unit, 

Baseline Scenario........................................................................................ 8D-3

Figure 8D.1.4 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, Low A & B Distribution Scenario ..................................................... 8D-5

Figure 8D.1.5 Average Payback Period for Design Line 1 Representative Unit, Low 

A & B Distribution Scenario....................................................................... 8D-5

Figure 8D.1.6 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, High A & B Distribution Scenario .................................................... 8D-7

Figure 8D.1.7 Average Payback Period for Design Line 1 Representative Unit, High 

A & B Distribution Scenario....................................................................... 8D-7

Figure 8D.1.8 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, Low Loading Scenario....................................................................... 8D-9

Figure 8D.1.9 Average Payback Period for Design Line 1 Representative Unit, Low 

Loading Scenario ........................................................................................ 8D-9

Figure 8D.1.10 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, High Loading Scenario .................................................................... 8D-11

Figure 8D.1.11 Average Payback Period for Design Line 1 Representative Unit, High 

Loading Scenario ...................................................................................... 8D-11

Figure 8D.1.12 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-13

Figure 8D.1.13 Average Payback Period for Design Line 1 Representative Unit, Low 

Electricity Price Scenario.......................................................................... 8D-13

Figure 8D.1.14 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-15
8D-xiii

Figure 8D.1.15 Average Payback Period for Design Line 1 Representative Unit, High 

Electricity Price Scenario.......................................................................... 8D-15

Figure 8D.1.16 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-17

Figure 8D.1.17 Average Payback Period for Design Line 1 Representative Unit, No 

Load Growth Scenario .............................................................................. 8D-17

Figure 8D.1.18 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, High Load Growth Scenario............................................................ 8D-19

Figure 8D.1.19 Average Payback Period for Design Line 1 Representative Unit, High 

Load Growth Scenario .............................................................................. 8D-19

Figure 8D.1.20 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-21

Figure 8D.1.21 Average Payback Period for Design Line 1 Representative Unit, Low 

Equipment Price Scenario......................................................................... 8D-21

Figure 8D.1.22 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-23

Figure 8D.1.23 Average Payback Period for Design Line 1 Representative Unit, High 

Equipment Price Scenario......................................................................... 8D-23

Figure 8D.1.24 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-25

Figure 8D.1.25 Average Payback Period for Design Line 1 Representative Unit, Low 

Electricity Price Trend Scenario ............................................................... 8D-25

Figure 8D.1.26 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-27

Figure 8D.1.27 Average Payback Period for Design Line 1 Representative Unit, High 

Electricity Price Trend Scenario ............................................................... 8D-27

Figure 8D.1.28 Average Life-Cycle Cost Savings for Design Line 1 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-29

Figure 8D.1.29 Average Payback Period for Design Line 1 Representative Unit, 

Materials Exclusion Scenario ................................................................... 8D-29

Figure 8D.2.1 Average LCC Savings ($) by Scenario for Design Line 2........................ 8D-30

Figure 8D.2.2 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, Baseline Scenario............................................................................. 8D-32

Figure 8D.2.3 Average Payback Period for Design Line 2 Representative Unit, 

Baseline Scenario...................................................................................... 8D-32

Figure 8D.2.4 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-34

Figure 8D.2.5 Average Payback Period for Design Line 2 Representative Unit, Low 

A & B Distribution Scenario..................................................................... 8D-34

Figure 8D.2.6 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-36

Figure 8D.2.7 Average Payback Period for Design Line 2 Representative Unit, High 

A & B Distribution Scenario..................................................................... 8D-36

Figure 8D.2.8 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, Low Loading Scenario..................................................................... 8D-38
8D-xiv

Figure 8D.2.9 Average Payback Period for Design Line 2 Representative Unit, Low 

Loading Scenario ...................................................................................... 8D-38

Figure 8D.2.10 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, High Loading Scenario .................................................................... 8D-40

Figure 8D.2.11 Average Payback Period for Design Line 2 Representative Unit, High 

Loading Scenario ...................................................................................... 8D-40

Figure 8D.2.12 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-42

Figure 8D.2.13 Average Payback Period for Design Line 2 Representative Unit, Low 

Electricity Price Scenario.......................................................................... 8D-42

Figure 8D.2.14 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-44

Figure 8D.2.15 Average Payback Period for Design Line 2 Representative Unit, High 

Electricity Price Scenario.......................................................................... 8D-44

Figure 8D.2.16 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-46

Figure 8D.2.17 Average Payback Period for Design Line 2 Representative Unit, No 

Load Growth Scenario .............................................................................. 8D-46

Figure 8D.2.18 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, High Load Growth Scenario............................................................ 8D-48

Figure 8D.2.19 Average Payback Period for Design Line 2 Representative Unit, High 

Load Growth Scenario .............................................................................. 8D-48

Figure 8D.2.20 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-50

Figure 8D.2.21 Average Payback Period for Design Line 2 Representative Unit, Low 

Equipment Price Scenario......................................................................... 8D-50

Figure 8D.2.22 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-52

Figure 8D.2.23 Average Payback Period for Design Line 2 Representative Unit, High 

Equipment Price Scenario......................................................................... 8D-52

Figure 8D.2.24 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-54

Figure 8D.2.25 Average Payback Period for Design Line 2 Representative Unit, Low 

Electricity Price Trend Scenario ............................................................... 8D-54

Figure 8D.2.26 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-56

Figure 8D.2.27 Average Payback Period for Design Line 2 Representative Unit, High 

Electricity Price Trend Scenario ............................................................... 8D-56

Figure 8D.2.28 Average Life-Cycle Cost Savings for Design Line 2 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-58

Figure 8D.2.29 Average Payback Period for Design Line 2 Representative Unit, 

Materials Exclusion Scenario ................................................................... 8D-58

Figure 8D.3.1 Average LCC Savings ($) by Scenario for Design Line 3........................ 8D-59

Figure 8D.3.2 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, Baseline Scenario............................................................................. 8D-61
8D-xv

Figure 8D.3.3 Average Payback Period for Design Line 3 Representative Unit, 

Baseline Scenario...................................................................................... 8D-61

Figure 8D.3.4 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-63

Figure 8D.3.5 Average Payback Period for Design Line 3 Representative Unit, Low 

A & B Distribution Scenario..................................................................... 8D-63

Figure 8D.3.6 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-65

Figure 8D.3.7 Average Payback Period for Design Line 3 Representative Unit, High 

A & B Distribution Scenario..................................................................... 8D-65

Figure 8D.3.8 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, Low Loading Scenario..................................................................... 8D-67

Figure 8D.3.9 Average Payback Period for Design Line 3 Representative Unit, Low 

Loading Scenario ...................................................................................... 8D-67

Figure 8D.3.10 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, High Loading Scenario .................................................................... 8D-69

Figure 8D.3.11 Average Payback Period for Design Line 3 Representative Unit, High 

Loading Scenario ...................................................................................... 8D-69

Figure 8D.3.12 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, Low Electricity Price Scenario ........................................................ 8D-71

Figure 8D.3.13 Average Payback Period for Design Line 3 Representative Unit, Low 

Electricity Price Scenario.......................................................................... 8D-71

Figure 8D.3.14 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, High Electricity Price Scenario........................................................ 8D-73

Figure 8D.3.15 Average Payback Period for Design Line 3 Representative Unit, High 

Electricity Price Scenario.......................................................................... 8D-73

Figure 8D.3.16 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, No Load Growth Scenario ............................................................... 8D-75

Figure 8D.3.17 Average Payback Period for Design Line 3 Representative Unit, No 

Load Growth Scenario .............................................................................. 8D-75

Figure 8D.3.18 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, High Load Growth Scenario............................................................ 8D-77

Figure 8D.3.19 Average Payback Period for Design Line 3 Representative Unit, High 

Load Growth Scenario .............................................................................. 8D-77

Figure 8D.3.20 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, Low Equipment Price Scenario ....................................................... 8D-79

Figure 8D.3.21 Average Payback Period for Design Line 3 Representative Unit, Low 

Equipment Price Scenario......................................................................... 8D-79

Figure 8D.3.22 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, High Equipment Price Scenario....................................................... 8D-81

Figure 8D.3.23 Average Payback Period for Design Line 3 Representative Unit, High 

Equipment Price Scenario......................................................................... 8D-81

Figure 8D.3.24 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, Low Electricity Price Trend Scenario.............................................. 8D-83

Figure 8D.3.25 Average Payback Period for Design Line 3 Representative Unit, Low 

Electricity Price Trend Scenario ............................................................... 8D-83
8D-xvi

Figure 8D.3.26 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, High Electricity Price Trend Scenario............................................. 8D-85

Figure 8D.3.27 Average Payback Period for Design Line 3 Representative Unit, High 

Electricity Price Trend Scenario ............................................................... 8D-85

Figure 8D.3.28 Average Life-Cycle Cost Savings for Design Line 3 Representative 

Unit, Materials Exclusion Scenario .......................................................... 8D-87

Figure 8D.3.29 Average Payback Period for Design Line 3 Representative Unit, 

Materials Exclusion Scenario ................................................................... 8D-87

Figure 8D.4.1 Average LCC Savings ($) by Scenario for Design Line 4........................ 8D-88

Figure 8D.4.2 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, Baseline Scenario............................................................................. 8D-90

Figure 8D.4.3 Average Payback Period for Design Line 4 Representative Unit, 

Baseline Scenario...................................................................................... 8D-90

Figure 8D.4.4 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, Low A & B Distribution Scenario ................................................... 8D-92

Figure 8D.4.5 Average Payback Period for Design Line 4 Representative Unit, Low 

A & B Distribution Scenario..................................................................... 8D-92

Figure 8D.4.6 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, High A & B Distribution Scenario .................................................. 8D-94

Figure 8D.4.7 Average Payback Period for Design Line 4 Representative Unit, High 

A & B Distribution Scenario..................................................................... 8D-94

Figure 8D.4.8 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, Low Loading Scenario..................................................................... 8D-96

Figure 8D.4.9 Average Payback Period for Design Line 4 Representative Unit, Low 

Loading Scenario ...................................................................................... 8D-96

Figure 8D.4.10 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, High Loading Scenario .................................................................... 8D-98

Figure 8D.4.11 Average Payback Period for Design Line 4 Representative Unit, High 

Loading Scenario ...................................................................................... 8D-98

Figure 8D.4.12 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-100

Figure 8D.4.13 Average Payback Period for Design Line 4 Representative Unit, Low 

Electricity Price Scenario........................................................................ 8D-100

Figure 8D.4.14 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-102

Figure 8D.4.15 Average Payback Period for Design Line 4 Representative Unit, High 

Electricity Price Scenario........................................................................ 8D-102

Figure 8D.4.16 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-104

Figure 8D.4.17 Average Payback Period for Design Line 4 Representative Unit, No 

Load Growth Scenario ............................................................................ 8D-104

Figure 8D.4.18 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-106

Figure 8D.4.19 Average Payback Period for Design Line 4 Representative Unit, High 

Load Growth Scenario ............................................................................ 8D-106
8D-xvii

Figure 8D.4.20 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-108

Figure 8D.4.21 Average Payback Period for Design Line 4 Representative Unit, Low 

Equipment Price Scenario....................................................................... 8D-108

Figure 8D.4.22 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-110

Figure 8D.4.23 Average Payback Period for Design Line 4 Representative Unit, High 

Equipment Price Scenario....................................................................... 8D-110

Figure 8D.4.24 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-112

Figure 8D.4.25 Average Payback Period for Design Line 4 Representative Unit, Low 

Electricity Price Trend Scenario ............................................................. 8D-112

Figure 8D.4.26 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-114

Figure 8D.4.27 Average Payback Period for Design Line 4 Representative Unit, High 

Electricity Price Trend Scenario ............................................................. 8D-114

Figure 8D.4.28 Average Life-Cycle Cost Savings for Design Line 4 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-116

Figure 8D.4.29 Average Payback Period for Design Line 4 Representative Unit, 

Materials Exclusion Scenario ................................................................. 8D-116

Figure 8D.5.1 Average LCC Savings ($) by Scenario for Design Line 5...................... 8D-117

Figure 8D.5.2 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, Baseline Scenario........................................................................... 8D-119

Figure 8D.5.3 Average Payback Period for Design Line 5 Representative Unit, 

Baseline Scenario.................................................................................... 8D-119

Figure 8D.5.4 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-121

Figure 8D.5.5 Average Payback Period for Design Line 5 Representative Unit, Low 

A & B Distribution Scenario................................................................... 8D-121

Figure 8D.5.6 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-123

Figure 8D.5.7 Average Payback Period for Design Line 5 Representative Unit, High 

A & B Distribution Scenario................................................................... 8D-123

Figure 8D.5.8 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, Low Loading Scenario................................................................... 8D-125

Figure 8D.5.9 Average Payback Period for Design Line 5 Representative Unit, Low 

Loading Scenario .................................................................................... 8D-125

Figure 8D.5.10 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, High Loading Scenario .................................................................. 8D-127

Figure 8D.5.11 Average Payback Period for Design Line 5 Representative Unit, High 

Loading Scenario .................................................................................... 8D-127

Figure 8D.5.12 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-129

Figure 8D.5.13 Average Payback Period for Design Line 5 Representative Unit, Low 

Electricity Price Scenario........................................................................ 8D-129
8D-xviii

Figure 8D.5.14 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-131

Figure 8D.5.15 Average Payback Period for Design Line 5 Representative Unit, High 

Electricity Price Scenario........................................................................ 8D-131

Figure 8D.5.16 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-133

Figure 8D.5.17 Average Payback Period for Design Line 5 Representative Unit, No 

Load Growth Scenario ............................................................................ 8D-133

Figure 8D.5.18 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-135

Figure 8D.5.19 Average Payback Period for Design Line 5 Representative Unit, High 

Load Growth Scenario ............................................................................ 8D-135

Figure 8D.5.20 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-137

Figure 8D.5.21 Average Payback Period for Design Line 5 Representative Unit, Low 

Equipment Price Scenario....................................................................... 8D-137

Figure 8D.5.22 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-139

Figure 8D.5.23 Average Payback Period for Design Line 5 Representative Unit, High 

Equipment Price Scenario....................................................................... 8D-139

Figure 8D.5.24 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-141

Figure 8D.5.25 Average Payback Period for Design Line 5 Representative Unit, Low 

Electricity Price Trend Scenario ............................................................. 8D-141

Figure 8D.5.26 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-143

Figure 8D.5.27 Average Payback Period for Design Line 5 Representative Unit, High 

Electricity Price Trend Scenario ............................................................. 8D-143

Figure 8D.5.28 Average Life-Cycle Cost Savings for Design Line 5 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-145

Figure 8D.5.29 Average Payback Period for Design Line 5 Representative Unit, 

Materials Exclusion Scenario ................................................................. 8D-145

Figure 8D.6.1 Average LCC Savings ($) by Scenario for Design Line 7...................... 8D-146

Figure 8D.6.2 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, Baseline Scenario........................................................................... 8D-148

Figure 8D.6.3 Average Payback Period for Design Line 7 Representative Unit, 

Baseline Scenario.................................................................................... 8D-148

Figure 8D.6.4 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-150

Figure 8D.6.5 Average Payback Period for Design Line 7 Representative Unit, Low 

A & B Distribution Scenario................................................................... 8D-150

Figure 8D.6.6 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-152

Figure 8D.6.7 Average Payback Period for Design Line 7 Representative Unit, High 

A & B Distribution Scenario................................................................... 8D-152
8D-xix

Figure 8D.6.8 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, Low Loading Scenario................................................................... 8D-154

Figure 8D.6.9 Average Payback Period for Design Line 7 Representative Unit, Low 

Loading Scenario .................................................................................... 8D-154

Figure 8D.6.10 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, High Loading Scenario .................................................................. 8D-156

Figure 8D.6.11 Average Payback Period for Design Line 7 Representative Unit, High 

Loading Scenario .................................................................................... 8D-156

Figure 8D.6.12 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-158

Figure 8D.6.13 Average Payback Period for Design Line 7 Representative Unit, Low 

Electricity Price Scenario........................................................................ 8D-158

Figure 8D.6.14 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-160

Figure 8D.6.15 Average Payback Period for Design Line 7 Representative Unit, High 

Electricity Price Scenario........................................................................ 8D-160

Figure 8D.6.16 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, No Load Growth Scenario ............................................................. 8D-162

Figure 8D.6.17 Average Payback Period for Design Line 7 Representative Unit, No 

Load Growth Scenario ............................................................................ 8D-162

Figure 8D.6.18 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-164

Figure 8D.6.19 Average Payback Period for Design Line 7 Representative Unit, High 

Load Growth Scenario ............................................................................ 8D-164

Figure 8D.6.20 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-166

Figure 8D.6.21 Average Payback Period for Design Line 7 Representative Unit, Low 

Equipment Price Scenario....................................................................... 8D-166

Figure 8D.6.22 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-168

Figure 8D.6.23 Average Payback Period for Design Line 7 Representative Unit, High 

Equipment Price Scenario....................................................................... 8D-168

Figure 8D.6.24 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-170

Figure 8D.6.25 Average Payback Period for Design Line 7 Representative Unit, Low 

Electricity Price Trend Scenario ............................................................. 8D-170

Figure 8D.6.26 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-172

Figure 8D.6.27 Average Payback Period for Design Line 7 Representative Unit, High 

Electricity Price Trend Scenario ............................................................. 8D-172

Figure 8D.6.28 Average Life-Cycle Cost Savings for Design Line 7 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-174

Figure 8D.6.29 Average Payback Period for Design Line 7 Representative Unit, 

Materials Exclusion Scenario ................................................................. 8D-174

Figure 8D.7.1 Average LCC Savings ($) by Scenario for Design Line 12.................... 8D-175
8D-xx

Figure 8D.7.2 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Baseline Scenario........................................................................... 8D-177

Figure 8D.7.3 Average Payback Period for Design Line 12 Representative Unit, 

Baseline Scenario.................................................................................... 8D-177

Figure 8D.7.4 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Low A & B Distribution Scenario ................................................. 8D-179

Figure 8D.7.5 Average Payback Period for Design Line 12 Representative Unit, Low 

A & B Distribution Scenario................................................................... 8D-179

Figure 8D.7.6 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, High A & B Distribution Scenario ................................................ 8D-181

Figure 8D.7.7 Average Payback Period for Design Line 12 Representative Unit, High 

A & B Distribution Scenario................................................................... 8D-181

Figure 8D.7.8 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Low Loading Scenario................................................................... 8D-183

Figure 8D.7.9 Average Payback Period for Design Line 12 Representative Unit, Low 

Loading Scenario .................................................................................... 8D-183

Figure 8D.7.10 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, High Loading Scenario .................................................................. 8D-185

Figure 8D.7.11 Average Payback Period for Design Line 12 Representative Unit, High 

Loading Scenario .................................................................................... 8D-185

Figure 8D.7.12 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Low Electricity Price Scenario ...................................................... 8D-187

Figure 8D.7.13 Average Payback Period for Design Line 12 Representative Unit, Low 

Electricity Price Scenario........................................................................ 8D-187

Figure 8D.7.14 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, High Electricity Price Scenario...................................................... 8D-189

Figure 8D.7.15 Average Payback Period for Design Line 12 Representative Unit, High 

Electricity Price Scenario........................................................................ 8D-189

Figure 8D.7.16 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Medium Load Growth Scenario .................................................... 8D-191

Figure 8D.7.17 Average Payback Period for Design Line 12 Representative Unit, 

Medium Load Growth Scenario.............................................................. 8D-191

Figure 8D.7.18 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, High Load Growth Scenario.......................................................... 8D-193

Figure 8D.7.19 Average Payback Period for Design Line 12 Representative Unit, High 

Load Growth Scenario ............................................................................ 8D-193

Figure 8D.7.20 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Low Equipment Price Scenario ..................................................... 8D-195

Figure 8D.7.21 Average Payback Period for Design Line 12 Representative Unit, Low 

Equipment Price Scenario....................................................................... 8D-195

Figure 8D.7.22 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, High Equipment Price Scenario..................................................... 8D-197

Figure 8D.7.23 Average Payback Period for Design Line 12 Representative Unit, High 

Equipment Price Scenario....................................................................... 8D-197

Figure 8D.7.24 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Low Electricity Price Trend Scenario............................................ 8D-199
8D-xxi

Figure 8D.7.25 Average Payback Period for Design Line 12 Representative Unit, Low 

Electricity Price Trend Scenario ............................................................. 8D-199

Figure 8D.7.26 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, High Electricity Price Trend Scenario........................................... 8D-201

Figure 8D.7.27 Average Payback Period for Design Line 12 Representative Unit, High 

Electricity Price Trend Scenario ............................................................. 8D-201

Figure 8D.7.28 Average Life-Cycle Cost Savings for Design Line 12 Representative 

Unit, Materials Exclusion Scenario ........................................................ 8D-203

Figure 8D.7.29 Average Payback Period for Design Line 12 Representative Unit, 

Materials Exclusion Scenario ................................................................. 8D-203
8D-1

APPENDIX 8D. LIFE-CYCLE COST SENSITIVITY ANALYSIS

8D.1 DESIGN LINE 1 RESULTS

Figure 8D.1.1 Average LCC Savings ($) by Scenario for Design 

Line 1

Table 8D.1.1 LCC Savings ($), Summary Table for Design Line 1

Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Baseline 83 153 696 696 618 856 365

Low A & B Distribution 61 110 695 695 617 857 366

High A & B Distribution 267 544 698 698 622 842 347

Low Loading -48 -118 704 704 545 475 -273

High Loading 363 732 678 678 776 1672 1730

Low Electricity Price 64 109 560 560 473 659 148

High Electricity Price 102 197 832 832 763 1053 581

No Load Growth 40 64 699 699 594 731 157

High Load Growth 136 264 692 692 649 1012 626

Low Equipment Price 88 207 755 755 708 1002 638

High Equipment Price 22 32 487 487 344 473 -298

Low Electricity Price Trend 61 105 629 629 540 723 197

High Electricity Price Trend 92 173 742 742 670 931 452

Materials Exclusion 45 108 -173 -363 NA NA NA

-500

0

500

1000

1500

2000

99.11% 99.16% 99.22% 99.25% 99.31% 99.42% 99.50%

Average LCC Savings ($)

Transformer Efficiency (%)

Baseline

Low A & B Distribution

High A & B Distribution

Low Loading

High Loading 

Low Electricity Price

High Electricity Price

Medium Load Growth

High Load Growth

Low Equipment Price

High Equipment Price

Low Electricity Price Trend

High Electricity Price Trend

Materials Exclusion
8D-2

8D.1.1 Design Line 1 Results, Baseline Scenario

Table 8D.1.2 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

Baseline Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 37.33 44.23 6.98 6.98 11.18 14.07 42.58

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 62.50 55.60 92.85 92.85 88.82 85.93 57.42

Mean LCC Savings ($) 83 153 696 696 618 856 365

Median LCC Savings ($) 44 53 671 671 588 765 181

Table 8D.1.3 Summary Payback Period Results for Design Line 1 Representative Unit, 

Baseline Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 25.5 35.7 11.4 11.4 14.3 15.9 25.7

Median Payback (Years) 17.7 24.7 10.8 10.8 13.7 15.2 24.6

Transformers having Well 

Defined Payback (%) 81.89 91.47 99.83 99.83 99.96 100 99.99

Transformers having Undefined 

Payback (%) 18.11 8.53 0.17 0.17 0.04 0.00 0.01

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 205 197 159 159 157 139 134

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 6 15 52 52 55 72 77

Payback of Average 

Transformer 20.8 22.4 10.9 10.9 13.6 14.9 23.2
8D-3

Figure 8D.1.2 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, Baseline Scenario

Figure 8D.1.3 Average Payback Period for Design Line 1 

Representative Unit, Baseline Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

3000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-4

8D.1.2 Design Line 1 Results, Low A & B Distribution Scenario

Table 8D.1.4 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 39.50 47.31 7.05 7.05 11.08 14.04 42.47

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 60.50 52.69 92.95 92.95 88.92 85.96 57.53

Mean LCC Savings ($) 61 110 695 695 617 857 366

Median LCC Savings ($) 39 23 670 670 587 767 183

Table 8D.1.5 Summary Payback Period Results for Design Line 1 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 26.6 37.7 11.4 11.4 14.2 15.9 25.6

Median Payback (Years) 18.1 26.7 10.9 10.9 13.7 15.2 24.6

Transformers having Well 

Defined Payback (%) 80.06 90.88 100 100 100 100 100

Transformers having Undefined 

Payback (%) 19.94 9.12 0.00 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 2,099 2,235 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,166 2,226 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 207 199 159 159 157 139 134

Mean Incremental First Cost ($) 117 313 570 570 746 1,070 1,792

Mean Operating Cost Savings 

($) 5 12 52 52 55 72 77

Payback of Average 

Transformer 25.2 26.2 10.9 10.9 13.6 14.9 23.2
8D-5

Figure 8D.1.4 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, Low A & B Distribution 

Scenario

Figure 8D.1.5 Average Payback Period for Design Line 1 

Representative Unit, Low A & B Distribution 

Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

3000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-6

8D.1.3 Design Line 1 Results, High A & B Distribution Scenario

Table 8D.1.6 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 20.15 17.49 6.70 6.70 12.24 14.77 43.70

Transformers with No Change 

in LCC (%) 2.04 2.04 2.04 2.04 0.01 0.00 0.00

Transformers with Net LCC 

Benefit (%) 77.81 80.47 91.26 91.26 87.75 85.23 56.30

Mean LCC Savings ($) 267 544 698 698 622 842 347

Median LCC Savings ($) 90 514 676 676 587 743 155

Table 8D.1.7 Summary Payback Period Results for Design Line 1 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 17.4 17.8 11.3 11.3 14.7 16.3 26.5

Median Payback (Years) 15.7 11.5 10.7 10.7 13.7 15.4 24.9

Transformers having Well 

Defined Payback (%) 96.40 96.19 97.96 97.96 99.29 99.98 99.85

Transformers having Undefined 

Payback (%) 3.60 3.81 2.04 2.04 0.71 0.02 0.15

Mean Retail Cost ($) 2,202 2,354 2,447 2,447 2,554 2,801 3,336

Mean Installation Cost ($) 2,193 2,254 2,268 2,268 2,342 2,414 2,606

Mean Operating Costs ($) 190 171 159 159 156 139 134

Mean Incremental First Cost ($) 231 445 551 551 733 1,051 1,778

Mean Operating Cost Savings 

($) 20 39 51 51 54 70 76

Payback of Average 

Transformer 11.8 11.5 10.8 10.8 13.6 15.0 23.5
8D-7

Figure 8D.1.6 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, High A & B Distribution 

Scenario

Figure 8D.1.7 Average Payback Period for Design Line 1 

Representative Unit, High A & B Distribution 

Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

3000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

70

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-8

8D.1.4 Design Line 1 Results, Low Loading Scenario

Table 8D.1.8 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

Low Loading Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 64.61 78.06 6.91 6.91 12.54 22.16 69.11

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 35.22 21.77 92.92 92.92 87.46 77.84 30.89

Mean LCC Savings ($) -48 -118 704 704 545 475 -273

Median LCC Savings ($) -45 -190 681 681 520 430 -352

Table 8D.1.9 Summary Payback Period Results for Design Line 1 Representative Unit, 

Low Loading Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 34.6 59.9 11.3 11.3 14.9 18.8 33.4

Median Payback (Years) 25.0 55.2 10.8 10.8 14.2 18.2 32.3

Transformers having Well 

Defined Payback (%) 60.44 70.92 99.83 99.83 99.91 99.98 99.93

Transformers having Undefined 

Payback (%) 39.56 29.08 0.17 0.17 0.09 0.02 0.07

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 174 170 124 124 124 116 119

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 2 6 52 52 52 60 57

Payback of Average 

Transformer 62.4 54.1 10.9 10.9 14.2 17.9 31.3
8D-9

Figure 8D.1.8 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, Low Loading Scenario

Figure 8D.1.9 Average Payback Period for Design Line 1 

Representative Unit, Low Loading Scenario

-1500

-1000

-500

0

500

1000

1500

2000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-10

8D.1.5 Design Line 1 Results, High Loading Scenario

Table 8D.1.10 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

High Loading Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 13.88 15.04 7.51 7.51 9.19 7.80 18.73

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 85.95 84.79 92.32 92.32 90.81 92.20 81.27

Mean LCC Savings ($) 363 732 678 678 776 1672 1730

Median LCC Savings ($) 223 555 646 646 723 1443 1307

Table 8D.1.11 Summary Payback Period Results for Design Line 1 Representative Unit, 

High Loading Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 14.0 16.8 11.6 11.6 13.2 12.1 17.5

Median Payback (Years) 9.8 11.1 11.0 11.0 12.7 11.5 16.2

Transformers having Well 

Defined Payback (%) 95.56 98.90 99.83 99.83 99.99 100 100

Transformers having Undefined 

Payback (%) 4.44 1.10 0.17 0.17 0.01 0.00 0.00

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 272 254 235 235 227 189 166

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 15 33 51 51 60 97 120

Payback of Average 

Transformer 8.6 10.0 11.0 11.0 12.5 11.0 14.9
8D-11

Figure 8D.1.10 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, High Loading Scenario

Figure 8D.1.11 Average Payback Period for Design Line 1 

Representative Unit, High Loading Scenario

-2000

-1000

0

1000

2000

3000

4000

5000

6000

7000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-12

8D.1.6 Design Line 1 Results, Low Electricity Price Scenario

Table 8D.1.12 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 40.80 47.77 8.96 8.96 14.51 18.75 50.93

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 59.03 52.06 90.87 90.87 85.49 81.25 49.07

Mean LCC Savings ($) 64 109 560 560 473 659 148

Median LCC Savings ($) 30 18 540 540 449 576 -23

Table 8D.1.13 Summary Payback Period Results for Design Line 1 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 27.5 38.2 12.7 12.7 15.9 17.7 28.6

Median Payback (Years) 19.5 27.2 12.1 12.1 15.3 17.0 27.4

Transformers having Well 

Defined Payback (%) 82.21 91.47 99.83 99.83 99.96 99.99 99.99

Transformers having Undefined 

Payback (%) 17.79 8.53 0.17 0.17 0.04 0.01 0.01

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 190 182 149 149 146 131 126

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 6 13 46 46 49 65 70

Payback of Average 

Transformer 22.8 24.6 12.2 12.2 15.2 16.6 25.7
8D-13

Figure 8D.1.12 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, Low Electricity Price Scenario

Figure 8D.1.13 Average Payback Period for Design Line 1 

Representative Unit, Low Electricity Price Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-14

8D.1.7 Design Line 1 Results, High Electricity Price Scenario

Table 8D.1.14 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 34.43 40.79 5.81 5.81 9.09 11.19 35.29

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 65.40 59.04 94.02 94.02 90.91 88.81 64.71

Mean LCC Savings ($) 102 197 832 832 763 1053 581

Median LCC Savings ($) 60 86 802 802 729 955 383

Table 8D.1.15 Summary Payback Period Results for Design Line 1 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 23.9 33.4 10.3 10.3 12.9 14.5 23.4

Median Payback (Years) 16.1 22.7 9.8 9.8 12.4 13.8 22.3

Transformers having Well 

Defined Payback (%) 81.76 91.32 99.83 99.83 99.96 100 99.99

Transformers having Undefined 

Payback (%) 18.24 8.68 0.17 0.17 0.04 0.00 0.01

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 220 211 170 170 167 148 142

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 7 16 57 57 60 79 85

Payback of Average 

Transformer 19.2 20.6 9.9 9.9 12.3 13.5 21.1
8D-15

Figure 8D.1.14 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, High Electricity Price Scenario

Figure 8D.1.15 Average Payback Period for Design Line 1 

Representative Unit, High Electricity Price Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

3000

3500

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-16

8D.1.8 Design Line 1 Results, No Load Growth Scenario

Table 8D.1.16 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

No Load Growth Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 44.10 52.50 6.97 6.97 11.33 15.51 49.21

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 55.73 47.33 92.86 92.86 88.67 84.49 50.79

Mean LCC Savings ($) 40 64 699 699 594 731 157

Median LCC Savings ($) 19 -22 675 675 567 666 18

Table 8D.1.17 Summary Payback Period Results for Design Line 1 Representative Unit, 

No Load Growth Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 25.5 35.7 11.4 11.4 14.3 15.9 25.7

Median Payback (Years) 17.7 24.7 10.8 10.8 13.7 15.2 24.6

Transformers having Well 

Defined Payback (%) 81.89 91.47 99.83 99.83 99.96 100 99.99

Transformers having Undefined 

Payback (%) 18.11 8.53 0.17 0.17 0.04 0.00 0.01

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 205 197 159 159 157 139 134

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 6 15 52 52 55 72 77

Payback of Average 

Transformer 20.8 22.4 10.9 10.9 13.6 14.9 23.2
8D-17

Figure 8D.1.16 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, No Load Growth Scenario

Figure 8D.1.17 Average Payback Period for Design Line 1 

Representative Unit, No Load Growth Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-18

8D.1.9 Design Line 1 Results, High Load Growth Scenario

Table 8D.1.18 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

High Load Growth Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 30.86 35.96 7.01 7.01 10.94 13.06 36.49

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 68.97 63.87 92.82 92.82 89.06 86.94 63.51

Mean LCC Savings ($) 136 264 692 692 649 1012 626

Median LCC Savings ($) 73 143 665 665 614 884 377

Table 8D.1.19 Summary Payback Period Results for Design Line 1 Representative Unit, 

High Load Growth Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 25.5 35.7 11.4 11.4 14.3 15.9 25.7

Median Payback (Years) 17.7 24.7 10.8 10.8 13.7 15.2 24.6

Transformers having Well 

Defined Payback (%) 81.89 91.47 99.83 99.83 99.96 100 99.99

Transformers having Undefined 

Payback (%) 18.11 8.53 0.17 0.17 0.04 0.00 0.01

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 205 197 159 159 157 139 134

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 6 15 52 52 55 72 77

Payback of Average 

Transformer 20.8 22.4 10.9 10.9 13.6 14.9 23.2
8D-19

Figure 8D.1.18 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, High Load Growth Scenario

Figure 8D.1.19 Average Payback Period for Design Line 1 

Representative Unit, High Load Growth Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

3000

3500

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-20

8D.1.10 Design Line 1 Results, Low Equipment Price Scenario

Table 8D.1.20 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 39.48 37.52 5.49 5.49 8.32 10.01 30.74

Transformers with No Change 

in LCC (%) 0.23 0.23 0.23 0.23 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 60.29 62.25 94.28 94.28 91.68 89.99 69.26

Mean LCC Savings ($) 88 207 755 755 708 1002 638

Median LCC Savings ($) 43 104 729 729 677 910 453

Table 8D.1.21 Summary Payback Period Results for Design Line 1 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 26.1 31.1 10.2 10.2 12.6 13.8 21.9

Median Payback (Years) 16.5 20.4 10.1 10.1 12.5 13.2 21.0

Transformers having Well 

Defined Payback (%) 74.66 90.46 99.77 99.77 99.93 100 99.99

Transformers having Undefined 

Payback (%) 25.34 9.54 0.23 0.23 0.07 0.00 0.01

Mean Retail Cost ($) 1,702 1,805 1,998 1,998 2,075 2,272 2,681

Mean Installation Cost ($) 2,182 2,232 2,272 2,272 2,345 2,415 2,606

Mean Operating Costs ($) 205 197 159 159 156 139 134

Mean Incremental First Cost ($) 122 275 509 509 659 926 1,526

Mean Operating Cost Savings 

($) 6 15 52 52 55 72 77

Payback of Average 

Transformer 21.4 18.9 9.8 9.8 12.1 12.9 19.8
8D-21

Figure 8D.1.20 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, Low Equipment Price Scenario

Figure 8D.1.21 Average Payback Period for Design Line 1 

Representative Unit, Low Equipment Price Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

3000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-22

8D.1.11 Design Line 1 Results, High Equipment Price Scenario

Table 8D.1.22 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 47.37 56.22 14.27 14.27 25.35 30.88 66.82

Transformers with No Change 

in LCC (%) 0.02 0.02 0.02 0.02 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 52.61 43.76 85.71 85.71 74.65 69.12 33.18

Mean LCC Savings ($) 22 32 487 487 344 473 -298

Median LCC Savings ($) 8 -59 456 456 315 378 -488

Table 8D.1.23 Summary Payback Period Results for Design Line 1 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 29.5 44.3 15.6 15.6 19.3 21.4 34.9

Median Payback (Years) 22.5 33.3 15.4 15.4 19.2 20.6 33.5

Transformers having Well 

Defined Payback (%) 82.35 91.31 99.98 99.98 99.99 100 99.99

Transformers having Undefined 

Payback (%) 17.65 8.69 0.02 0.02 0.01 0.00 0.01

Mean Retail Cost ($) 2,720 2,925 3,250 3,250 3,407 3,763 4,564

Mean Installation Cost ($) 2,173 2,229 2,267 2,267 2,342 2,413 2,606

Mean Operating Costs ($) 206 198 159 159 156 139 134

Mean Incremental First Cost ($) 157 418 782 782 1,013 1,440 2,434

Mean Operating Cost Savings 

($) 5 13 52 52 55 72 77

Payback of Average 

Transformer 30.0 31.4 14.9 14.9 18.5 20.1 31.5
8D-23

Figure 8D.1.22 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, High Equipment Price 

Scenario

Figure 8D.1.23 Average Payback Period for Design Line 1 

Representative Unit, High Equipment Price 

Scenario

-2500

-2000

-1500

-1000

-500

0

500

1000

1500

2000

2500

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-24

8D.1.12 Design Line 1 Results, Low Electricity Price Trend Scenario

Table 8D.1.24 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 40.77 48.32 7.67 7.67 12.51 16.65 48.63

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 59.06 51.51 92.16 92.16 87.49 83.35 51.37

Mean LCC Savings ($) 61 105 629 629 540 723 197

Median LCC Savings ($) 30 15 607 607 514 645 35

Table 8D.1.25 Summary Payback Period Results for Design Line 1 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 26.4 36.7 11.6 11.6 14.6 16.3 26.5

Median Payback (Years) 18.3 25.8 11.1 11.1 14.0 15.7 25.3

Transformers having Well 

Defined Payback (%) 81.45 90.99 99.83 99.83 99.96 99.99 99.99

Transformers having Undefined 

Payback (%) 18.55 9.01 0.17 0.17 0.04 0.01 0.01

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 201 193 156 156 153 137 132

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 6 14 51 51 53 70 75

Payback of Average 

Transformer 21.8 23.4 11.2 11.2 13.9 15.3 23.9
8D-25

Figure 8D.1.24 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, Low Electricity Price Trend 

Scenario

Figure 8D.1.25 Average Payback Period for Design Line 1 

Representative Unit, Low Electricity Price Trend 

Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-26

8D.1.13 Design Line 1 Results, High Electricity Price Trend Scenario

Table 8D.1.26 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 35.44 42.30 6.55 6.55 10.26 12.63 39.33

Transformers with No Change 

in LCC (%) 0.17 0.17 0.17 0.17 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 64.39 57.53 93.28 93.28 89.74 87.37 60.67

Mean LCC Savings ($) 92 173 742 742 670 931 452

Median LCC Savings ($) 52 71 717 717 639 842 266

Table 8D.1.27 Summary Payback Period Results for Design Line 1 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 25.4 35.3 11.4 11.4 14.2 15.8 25.5

Median Payback (Years) 17.5 24.5 10.8 10.8 13.6 15.2 24.4

Transformers having Well 

Defined Payback (%) 82.16 91.64 99.83 99.83 99.96 100 99.99

Transformers having Undefined 

Payback (%) 17.84 8.36 0.17 0.17 0.04 0.00 0.01

Mean Retail Cost ($) 2,110 2,247 2,447 2,447 2,550 2,804 3,335

Mean Installation Cost ($) 2,169 2,229 2,271 2,271 2,344 2,415 2,606

Mean Operating Costs ($) 206 198 160 160 157 140 135

Mean Incremental First Cost ($) 128 326 568 568 745 1,068 1,791

Mean Operating Cost Savings 

($) 6 15 52 52 55 72 78

Payback of Average 

Transformer 20.5 22.2 10.9 10.9 13.6 14.8 23.0
8D-27

Figure 8D.1.26 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, High Electricity Price Trend 

Scenario

Figure 8D.1.27 Average Payback Period for Design Line 1 

Representative Unit, High Electricity Price Trend 

Scenario

-1500

-1000

-500

0

500

1000

1500

2000

2500

3000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-28

8D.1.14 Design Line 1 Results, Materials Exclusion Scenario

Table 8D.1.28 Summary Life-Cycle Cost Results for Design Line 1 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Efficiency (%) 99.11 99.16 99.22 99.25 99.31 99.42 99.50

Transformers with Net LCC 

Cost (%) 42.99 47.40 71.05 76.58 0.00 0.00 0.00

Transformers with No Change 

in LCC (%) 0.02 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 56.99 52.60 28.95 23.42 0.00 0.00 0.00

Mean LCC Savings ($) 45 108 -173 -363 NA NA NA

Median LCC Savings ($) 25 22 -270 -514 NA NA NA

Table 8D.1.29 Summary Payback Period Results for Design Line 1 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

0.4 1 2 3 4 5 6

Mean Payback (Years) 28.4 37.8 46.4 56.7 NA NA NA

Median Payback (Years) 19.6 26.9 40.4 50.1 NA NA NA

Transformers having Well 

Defined Payback (%) 77.68 90.67 99.71 98.95 0.00 0.00 0.00

Transformers having Undefined 

Payback (%) 22.32 9.33 0.29 1.05 0.00 0.00 0.00

Mean Retail Cost ($) 2,102 2,236 2,764 2,991 NA NA NA

Mean Installation Cost ($) 2,175 2,228 2,269 2,368 NA NA NA

Mean Operating Costs ($) 207 199 188 185 NA NA NA

Mean Incremental First Cost ($) 129 315 884 1,210 NA NA NA

Mean Operating Cost Savings 

($) 5 12 24 27 NA NA NA

Payback of Average 

Transformer 28.6 26.5 37.4 45.2 NA NA NA
8D-29

Figure 8D.1.28 Average Life-Cycle Cost Savings for Design Line 1 

Representative Unit, Materials Exclusion Scenario

Figure 8D.1.29 Average Payback Period for Design Line 1 

Representative Unit, Materials Exclusion Scenario

-1500

-1000

-500

0

500

1000

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 1 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL0.4 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line1 Average Payback Period

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

median

average
8D-30

8D.2 DESIGN LINE 2 RESULTS

Figure 8D.2.1 Average LCC Savings ($) by Scenario for Design 

Line 2

Table 8D.2.1 LCC Savings ($), Summary Table for Design Line 2

Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Baseline 66 278 343 330 311 -332 -579 -792

Low A & B Distribution 47 283 350 337 318 -335 -573 -796

High A & B Distribution 223 235 288 277 257 -314 -634 -763

Low Loading 47 442 440 370 284 -551 -873 -1127

High Loading 105 -75 135 246 370 136 49 -76

Low Electricity Price 52 222 272 253 222 -450 -710 -933

High Electricity Price 79 333 413 407 401 -215 -449 -651

No Load Growth 60 325 369 339 301 -401 -671 -896

High Load Growth 73 219 309 318 325 -246 -465 -662

Low Equipment Price 166 369 469 469 411 -108 -310 -112

High Equipment Price 116 209 266 219 175 -567 -881 -1184

Low Electricity Price Trend 12 100 98 51 -23 -805 -1114 -1371

High Electricity Price Trend 22 139 148 105 39 -724 -1023 -1273

Materials Exclusion -62 -145 NA NA NA NA NA NA

-1200

-1000

-800

-600

-400

-200

0

200

400

600

98.95 99 99.07 99.11 99.18 99.31 99.41 99.46

Average LCC Savings ($)

Transformer Efficiency (%)

Baseline

Low A & B Distribution

High A & B Distribution

Low Loading

High Loading 

Low Electricity Price

High Electricity Price

Medium Load Growth

High Load Growth

Low Equipment Price

High Equipment Price

Low Electricity Price Trend

High Electricity Price Trend

Materials Exclusion
8D-31

8D.2.1 Design Line 2 Results, Baseline Scenario

Table 8D.2.2 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

Baseline Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 41.49 18.16 11.39 13.07 17.83 51.51 67.17 76.53

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 55.16 81.84 88.61 86.93 82.17 48.49 32.83 23.47

Mean LCC Savings ($) 66 278 343 330 311 -332 -579 -792

Median LCC Savings ($) 22 260 323 317 300 -23 -301 -550

Table 8D.2.3 Summary Payback Period Results for Design Line 2 Representative Unit, 

Baseline Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) 23.1 12.9 12.7 14.7 17.3 35.0 40.5 44.4

Median Payback (Years) 5.92 9.9 11.1 13.0 15.5 24.9 31.6 36.6

Transformers having Well 

Defined Payback (%) 71.11 99.14 99.93 99.86 99.91 99.88 99.92 99.95

Transformers having Undefined 

Payback (%) 28.89 0.86 0.07 0.14 0.09 0.12 0.08 0.05

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 144 120 115 113 109 101 97 93

Mean Incremental First Cost ($) 138 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 24 29 31 34 43 47 50

Payback of Average 

Transformer 2.1 9.8 11.0 13.0 15.5 33.6 38.5 42.0
8D-32

Figure 8D.2.2 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, Baseline Scenario

Figure 8D.2.3 Average Payback Period for Design Line 2 

Representative Unit, Baseline Scenario

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-33

8D.2.2 Design Line 2 Results, Low A & B Distribution Scenario

Table 8D.2.4 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 44.89 17.84 10.94 12.27 16.99 51.13 66.74 76.44

Transformers with No Change 

in LCC (%) 1.56 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 53.55 82.16 89.06 87.73 83.01 48.87 33.26 23.56

Mean LCC Savings ($) 47 283 350 337 318 -335 -573 -796

Median LCC Savings ($) 13 267 331 324 308 -15 -291 -546

Table 8D.2.5 Summary Payback Period Results for Design Line 2 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 12.6 12.3 14.2 16.7 34.4 39.7 43.7

Median Payback (Years) 7.47 9.8 11.0 12.9 15.4 24.7 31.2 36.3

Transformers having Well 

Defined Payback (%) 70.08 99.18 99.96 99.91 99.92 99.91 99.93 99.96

Transformers having Undefined 

Payback (%) 29.92 0.82 0.04 0.09 0.08 0.09 0.07 0.04

Mean Retail Cost ($) 1,285 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1633 1722 1761 1790 1859 2525 2678 2467

Mean Operating Costs ($) 144 120 115 113 109 101 97 93

Mean Incremental First Cost ($) 140 241 323 402 540 1,453 1,813 2,126

Mean Operating Cost Savings 

($) 67 25 30 31 35 44 48 51

Payback of Average 

Transformer NA 9.8 10.9 12.8 15.4 33.4 38.1 41.7
8D-34

Figure 8D.2.4 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, Low A & B Distribution 

Scenario

Figure 8D.2.5 Average Payback Period for Design Line 2 

Representative Unit, Low A & B Distribution 

Scenario

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-35

8D.2.3 Design Line 2 Results, High A & B Distribution Scenario

Table 8D.2.6 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 13.11 21.03 16.12 19.73 26.02 55.08 70.36 77.21

Transformers with No Change 

in LCC (%) 18.28 0.05 0.01 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 68.61 78.92 83.87 80.27 73.98 44.92 29.64 22.79

Mean LCC Savings ($) 223 235 288 277 257 -314 -634 -763

Median LCC Savings ($) 239 212 260 254 227 -81 -394 -603

Table 8D.2.7 Summary Payback Period Results for Design Line 2 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA NA 15.4 19.1 22.8 39.7 47.2 49.9

Median Payback (Years) 4.51 10.6 11.8 13.8 17.0 27.4 35.6 40.4

Transformers having Well 

Defined Payback (%) 79.85 98.62 99.73 99.18 99.45 99.16 99.34 99.64

Transformers having Undefined 

Payback (%) 20.15 1.38 0.27 0.82 0.55 0.84 0.66 0.36

Mean Retail Cost ($) 1,321 1,440 1,481 1,531 1,599 1,846 2,052 2,577

Mean Installation Cost ($) 1659 1725 1761 1791 1859 2448 2678 2376

Mean Operating Costs ($) 137 119 115 113 109 101 97 93

Mean Incremental First Cost ($) 123 185 263 342 478 1,314 1,751 1,973

Mean Operating Cost Savings 

($) 43 18 23 24 28 37 41 44

Payback of Average 

Transformer NA 10.1 11.7 14.0 17.0 35.9 43.1 44.9
8D-36

Figure 8D.2.6 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, High A & B Distribution 

Scenario

Figure 8D.2.7 Average Payback Period for Design Line 2 

Representative Unit, High A & B Distribution 

Scenario

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-37

8D.2.4 Design Line 2 Results, Low Loading Scenario

Table 8D.2.8 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

Low Loading Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 57.30 9.74 9.81 13.24 20.62 65.22 83.91 91.98

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 39.35 90.26 90.19 86.76 79.38 34.78 16.09 8.02

Mean LCC Savings ($) 47 442 440 370 284 -551 -873 -1127

Median LCC Savings ($) -26 436 429 365 280 -193 -524 -802

Table 8D.2.9 Summary Payback Period Results for Design Line 2 Representative Unit, 

Low Loading Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 10.9 12.7 15.3 19.1 40.4 47.9 53.2

Median Payback (Years) 2.61 7.9 9.8 12.4 15.8 29.1 38.4 45.1

Transformers having Well 

Defined Payback (%) 45.64 97.51 99.53 98.83 99.20 98.88 99.08 99.31

Transformers having Undefined 

Payback (%) 54.36 2.49 0.47 1.17 0.80 1.12 0.92 0.69

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 125 96 93 93 91 89 87 85

Mean Incremental First Cost ($) 120 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 29 32 32 34 36 38 40

Payback of Average 

Transformer NA 8.1 9.9 12.5 15.9 40.1 48.0 53.2
8D-38

Figure 8D.2.8 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, Low Loading Scenario

Figure 8D.2.9 Average Payback Period for Design Line 2 

Representative Unit, Low Loading Scenario

-5000

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-39

8D.2.5 Design Line 2 Results, High Loading Scenario

Table 8D.2.10 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

High Loading Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 28.49 54.00 34.77 20.94 15.35 36.45 44.30 50.96

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 68.16 46.00 65.23 79.06 84.65 63.55 55.70 49.04

Mean LCC Savings ($) 105 -75 135 246 370 136 49 -76

Median LCC Savings ($) 106 -38 121 212 337 313 151 -25

Table 8D.2.11 Summary Payback Period Results for Design Line 2 Representative Unit, 

High Loading Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 22.6 18.3 15.7 15.8 27.3 30.3 32.7

Median Payback (Years) 7.43 14.4 14.3 14.4 15.0 19.2 23.3 26.5

Transformers having Well 

Defined Payback (%) 82.81 84.66 98.54 99.93 100 100 100 100

Transformers having Undefined 

Payback (%) 17.19 15.34 1.46 0.07 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 183 171 161 156 147 126 117 111

Mean Incremental First Cost ($) 177 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 13 22 28 36 58 67 73

Payback of Average 

Transformer NA 18.2 14.2 14.2 14.7 25.0 27.1 29.0
8D-40

Figure 8D.2.10 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, High Loading Scenario

Figure 8D.2.11 Average Payback Period for Design Line 2 

Representative Unit, High Loading Scenario

-4000

-3000

-2000

-1000

0

1000

2000

3000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

70

80

90

100

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-41

8D.2.6 Design Line 2 Results, Low Electricity Price Scenario

Table 8D.2.12 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 43.17 21.53 14.89 17.03 23.26 59.04 74.67 83.20

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 53.48 78.47 85.11 82.97 76.74 40.96 25.33 16.80

Mean LCC Savings ($) 52 222 272 253 222 -450 -710 -933

Median LCC Savings ($) 15 207 253 241 213 -121 -413 -672

Table 8D.2.13 Summary Payback Period Results for Design Line 2 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 14.3 14.1 16.3 19.2 38.2 44.2 48.5

Median Payback (Years) 6.72 11.0 12.4 14.5 17.4 27.7 35.1 40.8

Transformers having Well 

Defined Payback (%) 70.86 99.07 99.93 99.85 99.91 99.88 99.89 99.93

Transformers having Undefined 

Payback (%) 29.14 0.93 0.07 0.15 0.09 0.12 0.11 0.07

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 134 113 108 107 103 96 92 89

Mean Incremental First Cost ($) 130 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 21 26 27 31 38 42 45

Payback of Average 

Transformer NA 11.0 12.3 14.5 17.3 37.4 42.9 46.8
8D-42

Figure 8D.2.12 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, Low Electricity Price Scenario

Figure 8D.2.13 Average Payback Period for Design Line 2 

Representative Unit, Low Electricity Price Scenario

-5000

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-43

8D.2.7 Design Line 2 Results, High Electricity Price Scenario

Table 8D.2.14 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 39.90 15.73 9.49 10.55 14.09 45.40 59.98 70.21

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 56.75 84.27 90.51 89.45 85.91 54.60 40.02 29.79

Mean LCC Savings ($) 79 333 413 407 401 -215 -449 -651

Median LCC Savings ($) 30 312 390 392 388 77 -191 -431

Table 8D.2.15 Summary Payback Period Results for Design Line 2 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 11.8 11.5 13.4 15.8 32.3 37.3 40.8

Median Payback (Years) 5.31 8.9 10.0 11.7 14.1 22.6 28.7 33.3

Transformers having Well 

Defined Payback (%) 71.07 99.20 99.96 99.87 99.92 99.88 99.92 99.95

Transformers having Undefined 

Payback (%) 28.93 0.80 0.04 0.13 0.08 0.12 0.08 0.05

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 153 126 121 119 115 106 101 98

Mean Incremental First Cost ($) 147 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 27 32 34 38 47 52 55

Payback of Average 

Transformer NA 8.9 9.9 11.7 14.1 30.5 34.9 38.1
8D-44

Figure 8D.2.14 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, High Electricity Price Scenario

Figure 8D.2.15 Average Payback Period for Design Line 2 

Representative Unit, High Electricity Price Scenario

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-45

8D.2.8 Design Line 2 Results, No Load Growth Scenario

Table 8D.2.16 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

No Load Growth Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 44.87 14.80 10.79 13.10 18.67 54.61 71.95 82.04

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 51.78 85.20 89.21 86.90 81.33 45.39 28.05 17.96

Mean LCC Savings ($) 60 325 369 339 301 -401 -671 -896

Median LCC Savings ($) 7 305 351 327 290 -67 -361 -618

Table 8D.2.17 Summary Payback Period Results for Design Line 2 Representative Unit, 

No Load Growth Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 12.9 12.7 14.7 17.3 35.0 40.5 44.4

Median Payback (Years) 5.92 9.9 11.1 13.0 15.5 24.9 31.6 36.6

Transformers having Well 

Defined Payback (%) 71.11 99.14 99.93 99.86 99.91 99.88 99.92 99.95

Transformers having Undefined 

Payback (%) 28.89 0.86 0.07 0.14 0.09 0.12 0.08 0.05

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 144 120 115 113 109 101 97 93

Mean Incremental First Cost ($) 138 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 24 29 31 34 43 47 50

Payback of Average 

Transformer NA 9.8 11.0 13.0 15.5 33.6 38.5 42.0
8D-46

Figure 8D.2.16 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, No Load Growth Scenario

Figure 8D.2.17 Average Payback Period for Design Line 2 

Representative Unit, No Load Growth Scenario

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-47

8D.2.9 Design Line 2 Results, High Load Growth Scenario

Table 8D.2.18 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

High Load Growth Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 38.21 23.61 13.41 13.24 17.09 48.03 61.75 71.08

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 58.44 76.39 86.59 86.76 82.91 51.97 38.25 28.92

Mean LCC Savings ($) 73 219 309 318 325 -246 -465 -662

Median LCC Savings ($) 38 206 290 302 311 32 -231 -468

Table 8D.2.19 Summary Payback Period Results for Design Line 2 Representative Unit, 

High Load Growth Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 12.9 12.7 14.7 17.3 35.0 40.5 44.4

Median Payback (Years) 5.92 9.9 11.1 13.0 15.5 24.9 31.6 36.6

Transformers having Well 

Defined Payback (%) 71.11 99.14 99.93 99.86 99.91 99.88 99.92 99.95

Transformers having Undefined 

Payback (%) 28.89 0.86 0.07 0.14 0.09 0.12 0.08 0.05

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 144 120 115 113 109 101 97 93

Mean Incremental First Cost ($) 138 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 24 29 31 34 43 47 50

Payback of Average 

Transformer NA 9.8 11.0 13.0 15.5 33.6 38.5 42.0
8D-48

Figure 8D.2.18 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, High Load Growth Scenario

Figure 8D.2.19 Average Payback Period for Design Line 2 

Representative Unit, High Load Growth Scenario

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-49

8D.2.10 Design Line 2 Results, Low Equipment Price Scenario

Table 8D.2.20 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 6.86 14.86 6.80 6.93 10.98 37.00 50.51 47.67

Transformers with No Change 

in LCC (%) 2.47 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 90.67 85.14 93.20 93.07 89.02 63.00 49.49 52.33

Mean LCC Savings ($) 166 369 469 469 411 -108 -310 -112

Median LCC Savings ($) 150 342 445 450 448 221 -8 35

Table 8D.2.21 Summary Payback Period Results for Design Line 2 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) 3.3 9.7 8.3 10.1 14.0 28.9 33.7 30.3

Median Payback (Years) 0.00 5.6 7.1 8.8 11.5 18.8 24.5 24.1

Transformers having Well 

Defined Payback (%) 93.75 99.02 99.96 99.90 99.94 99.87 99.92 99.96

Transformers having Undefined 

Payback (%) 6.25 0.98 0.04 0.10 0.06 0.13 0.08 0.04

Mean Retail Cost ($) 1,047 1,163 1,195 1,232 1,283 1,472 1,628 1,952

Mean Installation Cost ($) 1683 1716 1761 1791 1915 2509 2678 2261

Mean Operating Costs ($) 146 121 115 113 109 101 97 93

Mean Incremental First Cost ($) 139 149 226 292 468 1,251 1,576 1,482

Mean Operating Cost Savings 

($) -15 25 31 33 37 45 49 53

Payback of Average 

Transformer -9.6 6.0 7.2 8.8 12.7 27.7 32.0 28.1
8D-50

Figure 8D.2.20 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, Low Equipment Price Scenario

Figure 8D.2.21 Average Payback Period for Design Line 2 

Representative Unit, Low Equipment Price Scenario

-3500

-3000

-2500

-2000

-1500

-1000

-500

0

500

1000

1500

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-51

8D.2.11 Design Line 2 Results, High Equipment Price Scenario

Table 8D.2.22 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 38.69 24.37 16.90 22.18 29.35 66.34 80.62 88.29

Transformers with No Change 

in LCC (%) 1.70 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 59.61 75.63 83.10 77.82 70.65 33.66 19.38 11.71

Mean LCC Savings ($) 116 209 266 219 175 -567 -881 -1184

Median LCC Savings ($) 45 192 247 203 167 -248 -594 -926

Table 8D.2.23 Summary Payback Period Results for Design Line 2 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 15.6 15.0 17.7 20.6 39.4 45.7 50.9

Median Payback (Years) 10.80 12.9 13.9 16.8 19.8 30.5 38.3 44.6

Transformers having Well 

Defined Payback (%) 83.66 99.40 99.98 99.92 99.96 99.93 99.96 99.98

Transformers having Undefined 

Payback (%) 16.34 0.60 0.02 0.08 0.04 0.07 0.04 0.02

Mean Retail Cost ($) 1,706 1,930 1,981 2,065 2,153 2,501 2,772 3,372

Mean Installation Cost ($) 1632 1723 1759 1791 1865 2519 2678 2469

Mean Operating Costs ($) 144 120 115 113 109 101 97 93

Mean Incremental First Cost ($) 134 315 403 518 680 1,682 2,113 2,503

Mean Operating Cost Savings 

($) 106 25 30 31 35 44 48 51

Payback of Average 

Transformer NA 12.8 13.7 16.5 19.3 38.5 44.3 49.0
8D-52

Figure 8D.2.22 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, High Equipment Price 

Scenario

Figure 8D.2.23 Average Payback Period for Design Line 2 

Representative Unit, High Equipment Price 

Scenario

-5000

-4000

-3000

-2000

-1000

0

1000

2000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-53

8D.2.12 Design Line 2 Results, Low Electricity Price Trend Scenario

Table 8D.2.24 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 50.36 28.38 26.45 36.41 54.85 91.36 98.25 99.50

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 46.29 71.62 73.55 63.59 45.15 8.64 1.75 0.50

Mean LCC Savings ($) 12 100 98 51 -23 -805 -1114 -1371

Median LCC Savings ($) -1 99 97 55 -19 -376 -697 -977

Table 8D.2.25 Summary Payback Period Results for Design Line 2 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 13.2 13.1 15.2 18.0 36.1 41.8 45.8

Median Payback (Years) 6.07 10.2 11.4 13.4 16.1 25.9 32.8 38.1

Transformers having Well 

Defined Payback (%) 70.57 99.12 99.93 99.86 99.91 99.88 99.91 99.93

Transformers having Undefined 

Payback (%) 29.43 0.88 0.07 0.14 0.09 0.12 0.09 0.07

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 140 117 112 110 107 99 95 92

Mean Incremental First Cost ($) 135 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 23 28 30 33 41 45 48

Payback of Average 

Transformer NA 10.1 11.3 13.4 16.1 34.9 40.1 43.7
8D-54

Figure 8D.2.24 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, Low Electricity Price Trend 

Scenario

Figure 8D.2.25 Average Payback Period for Design Line 2 

Representative Unit, Low Electricity Price Trend 

Scenario

-4500

-4000

-3500

-3000

-2500

-2000

-1500

-1000

-500

0

500

1000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-55

8D.2.13 Design Line 2 Results, High Electricity Price Trend Scenario

Table 8D.2.26 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 49.06 23.64 19.07 25.51 40.88 83.29 95.32 98.39

Transformers with No Change 

in LCC (%) 3.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 47.59 76.36 80.93 74.49 59.12 16.71 4.68 1.61

Mean LCC Savings ($) 22 139 148 105 39 -724 -1023 -1273

Median LCC Savings ($) 0 139 146 109 43 -304 -617 -893

Table 8D.2.27 Summary Payback Period Results for Design Line 2 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 12.7 12.6 14.7 17.3 35.1 40.6 44.5

Median Payback (Years) 5.81 9.8 11.0 12.9 15.5 25.0 31.7 36.8

Transformers having Well 

Defined Payback (%) 70.50 99.11 99.93 99.86 99.91 99.88 99.91 99.93

Transformers having Undefined 

Payback (%) 29.50 0.89 0.07 0.14 0.09 0.12 0.09 0.07

Mean Retail Cost ($) 1,288 1,437 1,480 1,530 1,598 1,846 2,052 2,577

Mean Installation Cost ($) 1636 1722 1761 1790 1859 2516 2678 2457

Mean Operating Costs ($) 143 119 114 112 109 100 96 93

Mean Incremental First Cost ($) 138 235 317 396 534 1,439 1,807 2,110

Mean Operating Cost Savings 

($) 65 24 29 31 34 43 47 50

Payback of Average 

Transformer NA 9.7 10.9 12.9 15.5 33.7 38.6 42.1
8D-56

Figure 8D.2.26 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, High Electricity Price Trend 

Scenario

Figure 8D.2.27 Average Payback Period for Design Line 2 

Representative Unit, High Electricity Price Trend 

Scenario

-4500

-4000

-3500

-3000

-2500

-2000

-1500

-1000

-500

0

500

1000

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-57

8D.2.14 Design Line 2 Results, Materials Exclusion Scenario

Table 8D.2.28 Summary Life-Cycle Cost Results for Design Line 2 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Efficiency (%) 98.95 99.00 99.07 99.11 99.18 99.31 99.41 99.46

Transformers with Net LCC 

Cost (%) 69.77 78.56 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 30.23 21.44 0.00 0.00 0.00 0.00 0.00 0.00

Mean LCC Savings ($) -62 -145 NA NA NA NA NA NA

Median LCC Savings ($) -70 -129 NA NA NA NA NA NA

Table 8D.2.29 Summary Payback Period Results for Design Line 2 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

0.5 1 2 3 4 5 6 7

Mean Payback (Years) NA 54.6 NA NA NA NA NA NA

Median Payback (Years) 35.68 46.5 NA NA NA NA NA NA

Transformers having Well 

Defined Payback (%) 68.17 95.72 0.00 0.00 0.00 0.00 0.00 0.00

Transformers having Undefined 

Payback (%) 31.83 4.28 0.00 0.00 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 1,284 1,567 NA NA NA NA NA NA

Mean Installation Cost ($) 1632 1687 NA NA NA NA NA NA

Mean Operating Costs ($) 145 138 NA NA NA NA NA NA

Mean Incremental First Cost ($) 143 338 NA NA NA NA NA NA

Mean Operating Cost Savings 

($) 133 6 NA NA NA NA NA NA

Payback of Average 

Transformer NA 53.0 NA NA NA NA NA NA
8D-58

Figure 8D.2.28 Average Life-Cycle Cost Savings for Design Line 2 

Representative Unit, Materials Exclusion Scenario

Figure 8D.2.29 Average Payback Period for Design Line 2 

Representative Unit, Materials Exclusion Scenario

-500

-400

-300

-200

-100

0

100

200

300

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 2 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 0.5 EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 2 Average Payback Period

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

median

average
8D-59

8D.3 DESIGN LINE 3 RESULTS

Figure 8D.3.1 Average LCC Savings ($) by Scenario for Design 

Line 3

Table 8D.3.1 LCC Savings ($), Summary Table for Design Line 3

Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Baseline 2407 2709 3526 5037 5527 6942 8075 4491

Low A & B Distribution 2390 2715 3583 5114 5613 7028 8162 4576

High A & B Distribution 2550 2689 3082 4421 4827 6241 7370 3797

Low Loading 2736 3144 4779 6173 6333 6619 5509 360

High Loading 1703 1779 846 2607 3801 7633 13567 13333

Low Electricity Price 2028 2269 2943 4223 4656 5889 6703 2962

High Electricity Price 2786 3149 4110 5851 6398 7994 9448 6019

No Load Growth 2519 2856 3936 5410 5792 6840 7243 3150

High Load Growth 2267 2526 3013 4570 5194 7069 9117 6170

Low Equipment Price 1799 2453 3605 5069 5588 7148 8812 6042

High Equipment Price 1737 2542 3041 4157 4583 5691 5761 581

Low Electricity Price Trend 1170 1292 1850 2511 2697 3123 2436 -2182

High Electricity Price Trend 1418 1579 2216 3034 3265 3836 3409 -1071

Materials Exclusion 1553 1567 2000 132 NA NA NA NA

-4000

-2000

0

2000

4000

6000

8000

10000

12000

14000

99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Average LCC Savings ($)

Transformer Efficiency (%)

Baseline

Low A & B Distribution

High A & B Distribution

Low Loading

High Loading 

Low Electricity Price

High Electricity Price

Medium Load Growth

High Load Growth

Low Equipment Price

High Equipment Price

Low Electricity Price Trend

High Electricity Price Trend

Materials Exclusion
8D-60

8D.3.1 Design Line 3 Results, Baseline Scenario

Table 8D.3.2 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

Baseline Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 13.90 14.48 11.98 5.28 4.03 4.04 8.04 29.93

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 84.77 84.19 86.86 94.69 95.94 95.96 91.96 70.07

Mean LCC Savings ($) 2407 2709 3526 5037 5527 6942 8075 4491

Median LCC Savings ($) 1918 2174 3170 4712 5246 6715 7517 3756

Table 8D.3.3 Summary Payback Period Results for Design Line 3 Representative Unit, 

Baseline Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 11.2 11.4 8.7 7.3 7.3 7.9 12.2 22.2

Median Payback (Years) 8.3 8.5 5.8 6.4 6.5 7.2 11.0 19.1

Transformers having Well 

Defined Payback (%) 96.67 97.27 98.36 99.97 99.97 100 100 99.99

Transformers having Undefined 

Payback (%) 3.33 2.73 1.64 0.03 0.03 0.00 0.00 0.01

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 946 923 866 780 759 693 578 523

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 144 167 223 310 330 396 512 567

Payback of Average 

Transformer 6.5 6.9 5.9 6.3 6.5 7.2 10.8 19.5
8D-61

Figure 8D.3.2 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, Baseline Scenario

Figure 8D.3.3 Average Payback Period for Design Line 3 

Representative Unit, Baseline Scenario

-10000

-5000

0

5000

10000

15000

20000

25000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-62

8D.3.2 Design Line 3 Results, Low A & B Distribution Scenario

Table 8D.3.4 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 14.75 15.28 12.64 5.06 3.63 3.48 6.73 28.54

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 85.25 84.72 87.36 94.94 96.37 96.52 93.27 71.46

Mean LCC Savings ($) 2390 2715 3583 5114 5613 7028 8162 4576

Median LCC Savings ($) 1913 2189 3255 4834 5367 6862 7665 3886

Table 8D.3.5 Summary Payback Period Results for Design Line 3 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 11.4 11.7 8.8 6.9 6.9 7.5 11.4 20.8

Median Payback (Years) 8.6 9.1 5.8 6.2 6.4 7.1 10.9 18.8

Transformers having Well 

Defined Payback (%) 97.81 98.47 99.45 100 100 100 100 100

Transformers having Undefined 

Payback (%) 2.19 1.53 0.55 0.00 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 8,509 8,697 8,939 9,532 9,677 10,279 12,499 15,916

Mean Installation Cost ($) 4,341 4,382 4,318 4,370 4,402 4,523 4,996 7,082

Mean Operating Costs ($) 956 931 869 780 759 693 578 523

Mean Incremental First Cost ($) 961 1,191 1,368 2,013 2,190 2,913 5,606 11,108

Mean Operating Cost Savings 

($) 147 172 234 323 344 410 525 580

Payback of Average 

Transformer 6.5 6.9 5.9 6.2 6.4 7.1 10.7 19.1
8D-63

Figure 8D.3.4 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, Low A & B Distribution 

Scenario

Figure 8D.3.5 Average Payback Period for Design Line 3 

Representative Unit, Low A & B Distribution 

Scenario

-10000

-5000

0

5000

10000

15000

20000

25000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-64

8D.3.3 Design Line 3 Results, High A & B Distribution Scenario

Table 8D.3.6 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 5.77 5.42 4.75 6.99 6.90 8.62 18.96 42.88

Transformers with No Change 

in LCC (%) 13.46 13.46 11.44 0.48 0.35 0.02 0.00 0.00

Transformers with Net LCC 

Benefit (%) 80.77 81.12 83.81 92.53 92.75 91.36 81.04 57.12

Mean LCC Savings ($) 2550 2689 3082 4421 4827 6241 7370 3797

Median LCC Savings ($) 1956 2115 2429 3444 3798 4993 5463 1689

Table 8D.3.7 Summary Payback Period Results for Design Line 3 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 8.5 8.1 7.9 10.3 10.5 11.7 19.0 34.1

Median Payback (Years) 6.8 6.6 6.5 8.5 8.6 9.5 14.1 25.0

Transformers having Well 

Defined Payback (%) 86.23 86.30 88.52 99.52 99.65 99.98 99.99 99.64

Transformers having Undefined 

Payback (%) 13.77 13.70 11.48 0.48 0.35 0.02 0.01 0.36

Mean Retail Cost ($) 8,889 8,904 8,979 9,556 9,684 10,284 12,503 15,924

Mean Installation Cost ($) 4,254 4,254 4,250 4,373 4,402 4,525 4,997 7,079

Mean Operating Costs ($) 861 856 841 776 759 693 578 522

Mean Incremental First Cost ($) 717 732 803 1,503 1,661 2,383 5,074 10,576

Mean Operating Cost Savings 

($) 113 118 133 198 215 281 396 452

Payback of Average 

Transformer 6.3 6.2 6.0 7.6 7.7 8.5 12.8 23.4
8D-65

Figure 8D.3.6 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, High A & B Distribution 

Scenario

Figure 8D.3.7 Average Payback Period for Design Line 3 

Representative Unit, High A & B Distribution 

Scenario

-15000

-10000

-5000

0

5000

10000

15000

20000

25000

30000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-66

8D.3.4 Design Line 3 Results, Low Loading Scenario

Table 8D.3.8 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 18.22 17.86 9.08 4.44 4.71 5.99 13.12 46.95

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 80.45 80.81 89.76 95.53 95.26 94.01 86.88 53.05

Mean LCC Savings ($) 2736 3144 4779 6173 6333 6619 5509 360

Median LCC Savings ($) 1493 1851 4452 5978 6153 6496 5324 412

Table 8D.3.9 Summary Payback Period Results for Design Line 3 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 14.8 14.4 9.0 7.2 7.5 9.1 15.7 29.2

Median Payback (Years) 10.3 10.5 4.7 5.7 6.0 7.3 12.9 23.9

Transformers having Well 

Defined Payback (%) 95.44 96.55 98.70 99.97 99.97 100 99.96 99.67

Transformers having Undefined 

Payback (%) 4.56 3.45 1.30 0.03 0.03 0.00 0.04 0.33

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 719 693 611 528 517 487 443 437

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 154 180 263 345 356 386 431 437

Payback of Average 

Transformer 6.1 6.4 5.0 5.7 6.0 7.4 12.9 25.3
8D-67

Figure 8D.3.8 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, Low Loading Scenario

Figure 8D.3.9 Average Payback Period for Design Line 3 

Representative Unit, Low Loading Scenario

-15000

-10000

-5000

0

5000

10000

15000

20000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

70

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-68

8D.3.5 Design Line 3 Results, High Loading Scenario

Table 8D.3.10 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

High Loading Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 23.59 26.44 38.82 28.55 18.73 3.60 4.73 14.78

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 75.08 72.23 60.02 71.42 81.24 96.40 95.27 85.22

Mean LCC Savings ($) 1703 1779 846 2607 3801 7633 13567 13333

Median LCC Savings ($) 2227 2279 1233 2222 3155 6760 11849 10675

Table 8D.3.11 Summary Payback Period Results for Design Line 3 Representative Unit, 

High Loading Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 8.8 9.6 11.5 12.5 10.6 7.5 9.1 15.3

Median Payback (Years) 6.5 7.3 7.0 8.3 8.0 7.1 8.6 13.5

Transformers having Well 

Defined Payback (%) 85.60 84.91 79.49 94.81 98.61 100 100 100

Transformers having Undefined 

Payback (%) 14.40 15.09 20.51 5.19 1.39 0.00 0.00 0.00

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 1,431 1,414 1,414 1,320 1,277 1,134 867 706

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 122 138 139 233 276 418 685 846

Payback of Average 

Transformer 7.7 8.3 9.5 8.4 7.7 6.8 8.1 13.1
8D-69

Figure 8D.3.10 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, High Loading Scenario

Figure 8D.3.11 Average Payback Period for Design Line 3 

Representative Unit, High Loading Scenario

-20000

-10000

0

10000

20000

30000

40000

50000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-70

8D.3.6 Design Line 3 Results, Low Electricity Price Scenario

Table 8D.3.12 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 15.80 16.73 14.29 6.62 4.98 4.74 9.89 35.79

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 82.87 81.94 84.55 93.35 94.99 95.26 90.11 64.21

Mean LCC Savings ($) 2028 2269 2943 4223 4656 5889 6703 2962

Median LCC Savings ($) 1602 1805 2641 3940 4383 5706 6189 2332

Table 8D.3.13 Summary Payback Period Results for Design Line 3 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 12.2 12.5 9.7 8.2 8.2 8.9 13.4 24.5

Median Payback (Years) 9.3 9.6 6.6 7.3 7.4 8.0 12.3 21.1

Transformers having Well 

Defined Payback (%) 96.50 97.11 98.09 99.97 99.97 100 100 99.99

Transformers having Undefined 

Payback (%) 3.50 2.89 1.91 0.03 0.03 0.00 0.00 0.01

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 861 840 791 714 695 634 528 476

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 128 148 197 275 294 354 461 512

Payback of Average 

Transformer 7.3 7.7 6.6 7.1 7.3 8.1 12.1 21.6
8D-71

Figure 8D.3.12 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, Low Electricity Price Scenario

Figure 8D.3.13 Average Payback Period for Design Line 3 

Representative Unit, Low Electricity Price Scenario

-15000

-10000

-5000

0

5000

10000

15000

20000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

50

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-72

8D.3.7 Design Line 3 Results, High Electricity Price Scenario

Table 8D.3.14 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 12.22 12.68 10.31 4.18 3.43 3.56 6.84 25.15

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 86.45 85.99 88.53 95.79 96.54 96.44 93.16 74.85

Mean LCC Savings ($) 2786 3149 4110 5851 6398 7994 9448 6019

Median LCC Savings ($) 2231 2556 3695 5485 6105 7759 8847 5189

Table 8D.3.15 Summary Payback Period Results for Design Line 3 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 10.1 10.4 7.8 6.6 6.6 7.2 11.1 20.4

Median Payback (Years) 7.5 7.7 5.2 5.8 5.9 6.5 10.0 17.4

Transformers having Well 

Defined Payback (%) 96.63 97.29 98.45 99.97 99.97 100 100 99.97

Transformers having Undefined 

Payback (%) 3.37 2.71 1.55 0.03 0.03 0.00 0.00 0.03

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 1,031 1,005 942 846 824 752 628 569

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 160 186 249 345 367 438 563 622

Payback of Average 

Transformer 5.9 6.2 5.3 5.7 5.8 6.5 9.9 17.8
8D-73

Figure 8D.3.14 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, High Electricity Price Scenario

Figure 8D.3.15 Average Payback Period for Design Line 3 

Representative Unit, High Electricity Price Scenario

-10000

-5000

0

5000

10000

15000

20000

25000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-74

8D.3.8 Design Line 3 Results, No Load Growth Scenario

Table 8D.3.16 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 13.37 13.78 9.37 4.29 3.90 4.31 8.83 33.52

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 85.30 84.89 89.47 95.68 96.07 95.69 91.17 66.48

Mean LCC Savings ($) 2519 2856 3936 5410 5792 6840 7243 3150

Median LCC Savings ($) 1825 2153 3455 5132 5540 6644 6872 2754

Table 8D.3.17 Summary Payback Period Results for Design Line 3 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 11.2 11.4 8.7 7.3 7.3 7.9 12.2 22.2

Median Payback (Years) 8.3 8.5 5.8 6.4 6.5 7.2 11.0 19.1

Transformers having Well 

Defined Payback (%) 96.67 97.27 98.36 99.97 99.97 100 100 99.99

Transformers having Undefined 

Payback (%) 3.33 2.73 1.64 0.03 0.03 0.00 0.00 0.01

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 946 923 866 780 759 693 578 523

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 144 167 223 310 330 396 512 567

Payback of Average 

Transformer 6.5 6.9 5.9 6.3 6.5 7.2 10.8 19.5
8D-75

Figure 8D.3.16 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, No Load Growth Scenario

Figure 8D.3.17 Average Payback Period for Design Line 3 

Representative Unit, No Load Growth Scenario

-10000

-5000

0

5000

10000

15000

20000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-76

8D.3.9 Design Line 3 Results, High Load Growth Scenario

Table 8D.3.18 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 15.45 16.54 16.43 7.69 4.87 3.93 7.50 26.33

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 83.22 82.13 82.41 92.28 95.10 96.07 92.50 73.67

Mean LCC Savings ($) 2267 2526 3013 4570 5194 7069 9117 6170

Median LCC Savings ($) 1971 2200 2783 4221 4844 6778 8309 5010

Table 8D.3.19 Summary Payback Period Results for Design Line 3 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 11.2 11.4 8.7 7.3 7.3 7.9 12.2 22.2

Median Payback (Years) 8.3 8.5 5.8 6.4 6.5 7.2 11.0 19.1

Transformers having Well 

Defined Payback (%) 96.67 97.27 98.36 99.97 99.97 100 100 99.99

Transformers having Undefined 

Payback (%) 3.33 2.73 1.64 0.03 0.03 0.00 0.00 0.01

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 946 923 866 780 759 693 578 523

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 144 167 223 310 330 396 512 567

Payback of Average 

Transformer 6.5 6.9 5.9 6.3 6.5 7.2 10.8 19.5
8D-77

Figure 8D.3.18 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, High Load Growth Scenario

Figure 8D.3.19 Average Payback Period for Design Line 3 

Representative Unit, High Load Growth Scenario

-10000

-5000

0

5000

10000

15000

20000

25000

30000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-78

8D.3.10 Design Line 3 Results, Low Equipment Price Scenario

Table 8D.3.20 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 12.27 7.86 12.47 4.43 3.37 3.47 5.93 22.38

Transformers with No Change 

in LCC (%) 2.33 2.33 2.10 0.20 0.16 0.06 0.00 0.00

Transformers with Net LCC 

Benefit (%) 85.40 89.81 85.43 95.37 96.47 96.47 94.07 77.62

Mean LCC Savings ($) 1799 2453 3605 5069 5588 7148 8812 6042

Median LCC Savings ($) 1517 2214 3402 4768 5294 6880 8218 5312

Table 8D.3.21 Summary Payback Period Results for Design Line 3 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 14.2 9.4 7.2 6.7 6.6 7.0 10.4 19.2

Median Payback (Years) 10.8 7.6 5.2 6.1 6.2 6.8 9.5 16.1

Transformers having Well 

Defined Payback (%) 96.39 97.09 97.28 99.80 99.84 99.94 100 99.99

Transformers having Undefined 

Payback (%) 3.61 2.91 2.72 0.20 0.16 0.06 0.00 0.01

Mean Retail Cost ($) 6,812 7,054 7,204 7,639 7,748 8,206 9,912 12,540

Mean Installation Cost ($) 4,404 4,195 4,253 4,372 4,403 4,524 4,998 7,082

Mean Operating Costs ($) 988 945 843 780 759 693 578 523

Mean Incremental First Cost ($) 1,003 1,036 1,244 1,798 1,938 2,517 4,697 9,409

Mean Operating Cost Savings 

($) 96 139 241 304 325 391 506 561

Payback of Average 

Transformer 10.4 7.4 5.2 5.9 6.0 6.4 9.3 16.8
8D-79

Figure 8D.3.20 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, Low Equipment Price Scenario

Figure 8D.3.21 Average Payback Period for Design Line 3 

Representative Unit, Low Equipment Price Scenario

-10000

-5000

0

5000

10000

15000

20000

25000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-80

8D.3.11 Design Line 3 Results, High Equipment Price Scenario

Table 8D.3.22 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 21.98 21.17 17.11 8.98 6.77 6.56 15.82 50.87

Transformers with No Change 

in LCC (%) 0.14 0.14 0.13 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 77.88 78.69 82.76 91.02 93.23 93.44 84.18 49.13

Mean LCC Savings ($) 1737 2542 3041 4157 4583 5691 5761 581

Median LCC Savings ($) 1478 2395 2863 3862 4272 5416 5143 -157

Table 8D.3.23 Summary Payback Period Results for Design Line 3 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 13.4 10.6 10.1 9.9 9.9 10.9 16.7 29.4

Median Payback (Years) 9.6 7.3 7.4 9.0 9.2 10.5 15.4 26.3

Transformers having Well 

Defined Payback (%) 96.76 97.29 99.10 100 100 100 100 99.98

Transformers having Undefined 

Payback (%) 3.24 2.71 0.90 0.00 0.00 0.00 0.00 0.02

Mean Retail Cost ($) 11,892 11,970 12,131 12,921 13,117 14,026 17,271 22,223

Mean Installation Cost ($) 4,203 4,252 4,256 4,372 4,399 4,524 5,000 7,083

Mean Operating Costs ($) 924 867 844 780 760 693 578 523

Mean Incremental First Cost ($) 1,454 1,582 1,747 2,652 2,876 3,910 7,631 14,665

Mean Operating Cost Savings 

($) 159 216 238 303 323 389 505 560

Payback of Average 

Transformer 9.2 7.3 7.3 8.8 8.9 10.0 15.1 26.2
8D-81

Figure 8D.3.22 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, High Equipment Price 

Scenario

Figure 8D.3.23 Average Payback Period for Design Line 3 

Representative Unit, High Equipment Price 

Scenario

-15000

-10000

-5000

0

5000

10000

15000

20000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-82

8D.3.12 Design Line 3 Results, Low Electricity Price Trend Scenario

Table 8D.3.24 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 22.26 24.38 17.73 7.71 6.09 5.28 16.12 69.65

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 76.41 74.29 81.11 92.26 93.88 94.72 83.88 30.35

Mean LCC Savings ($) 1170 1292 1850 2511 2697 3123 2436 -2182

Median LCC Savings ($) 788 860 1678 2433 2619 3092 2348 -1816

Table 8D.3.25 Summary Payback Period Results for Design Line 3 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 11.5 11.8 8.9 7.5 7.5 8.2 12.6 23.1

Median Payback (Years) 8.6 8.8 6.0 6.6 6.7 7.4 11.4 19.9

Transformers having Well 

Defined Payback (%) 96.65 97.28 98.43 99.97 99.97 100 100 99.98

Transformers having Undefined 

Payback (%) 3.35 2.72 1.57 0.03 0.03 0.00 0.00 0.02

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 909 887 832 748 728 666 556 504

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 139 162 217 301 320 383 492 544

Payback of Average 

Transformer 6.7 7.1 6.0 6.5 6.7 7.5 11.3 20.3
8D-83

Figure 8D.3.24 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, Low Electricity Price Trend 

Scenario

Figure 8D.3.25 Average Payback Period for Design Line 3 

Representative Unit, Low Electricity Price Trend 

Scenario

-12000

-10000

-8000

-6000

-4000

-2000

0

2000

4000

6000

8000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

50

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-84

8D.3.13 Design Line 3 Results, High Electricity Price Trend Scenario

Table 8D.3.26 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 18.54 20.07 14.57 6.34 4.96 4.78 10.88 58.16

Transformers with No Change 

in LCC (%) 1.33 1.33 1.16 0.03 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 80.13 78.60 84.27 93.63 95.01 95.22 89.12 41.84

Mean LCC Savings ($) 1418 1579 2216 3034 3265 3836 3409 -1071

Median LCC Savings ($) 1010 1127 2024 2945 3180 3765 3325 -784

Table 8D.3.27 Summary Payback Period Results for Design Line 3 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 11.1 11.4 8.6 7.2 7.2 7.9 12.2 22.3

Median Payback (Years) 8.3 8.5 5.8 6.4 6.5 7.1 11.0 19.2

Transformers having Well 

Defined Payback (%) 96.67 97.30 98.43 99.97 99.97 100 100 99.98

Transformers having Undefined 

Payback (%) 3.33 2.70 1.57 0.03 0.03 0.00 0.00 0.02

Mean Retail Cost ($) 8,549 8,719 8,943 9,535 9,678 10,279 12,499 15,917

Mean Installation Cost ($) 4,332 4,369 4,310 4,371 4,402 4,523 4,996 7,081

Mean Operating Costs ($) 941 917 860 773 753 688 575 521

Mean Incremental First Cost ($) 937 1,145 1,310 1,962 2,136 2,859 5,552 11,054

Mean Operating Cost Savings 

($) 145 168 226 312 333 397 511 564

Payback of Average 

Transformer 6.5 6.8 5.8 6.3 6.4 7.2 10.9 19.6
8D-85

Figure 8D.3.26 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, High Electricity Price Trend 

Scenario

Figure 8D.3.27 Average Payback Period for Design Line 3 

Representative Unit, High Electricity Price Trend 

Scenario

-15000

-10000

-5000

0

5000

10000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

50

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-86

8D.3.14 Design Line 3 Results, Materials Exclusion Scenario

Table 8D.3.28 Summary Life-Cycle Cost Results for Design Line 3 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69 99.73

Transformers with Net LCC 

Cost (%) 17.70 22.45 21.48 56.01 0.00 0.00 0.00 0.00

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 82.30 77.55 78.52 43.99 0.00 0.00 0.00 0.00

Mean LCC Savings ($) 1553 1567 2000 132 NA NA NA NA

Median LCC Savings ($) 1305 1277 1562 -464 NA NA NA NA

Table 8D.3.29 Summary Payback Period Results for Design Line 3 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 1.1 2 3 4 5 6 7

Mean Payback (Years) 17.8 20.4 19.6 33.0 NA NA NA NA

Median Payback (Years) 13.4 15.7 16.0 29.5 NA NA NA NA

Transformers having Well 

Defined Payback (%) 98.79 99.14 99.71 99.99 0.00 0.00 0.00 0.00

Transformers having Undefined 

Payback (%) 1.21 0.86 0.29 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 8,766 9,157 9,523 12,775 NA NA NA NA

Mean Installation Cost ($) 4,439 4,506 4,556 4,758 NA NA NA NA

Mean Operating Costs ($) 1,003 987 960 900 NA NA NA NA

Mean Incremental First Cost ($) 1,304 1,762 2,178 5,631 NA NA NA NA

Mean Operating Cost Savings 

($) 99 115 142 202 NA NA NA NA

Payback of Average 

Transformer 13.2 15.4 15.3 27.9 NA NA NA NA
8D-87

Figure 8D.3.28 Average Life-Cycle Cost Savings for Design Line 3 

Representative Unit, Materials Exclusion Scenario

Figure 8D.3.29 Average Payback Period for Design Line 3 

Representative Unit, Materials Exclusion Scenario

-6000

-4000

-2000

0

2000

4000

6000

8000

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 3 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

70

EL 1 EL 1.1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 3 Average Payback Period

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

median

average
8D-88

8D.4 DESIGN LINE 4 RESULTS

Figure 8D.4.1 Average LCC Savings ($) by Scenario for Design 

Line 4

Table 8D.4.1 LCC Savings ($), Summary Table for Design Line 4

Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Baseline 977 1212 3603 3603 3603 3755 4349 2806

Low A & B Distribution 734 953 3623 3623 3623 3766 4370 2833

High A & B Distribution 3019 3412 3412 3412 3412 3626 4133 2535

Low Loading 917 1035 3785 3785 3785 3784 2828 391

High Loading 1031 1377 3435 3435 3435 3728 5760 5045

Low Electricity Price 826 1013 3101 3101 3101 3230 3632 1927

High Electricity Price 1127 1412 4106 4106 4106 4280 5066 3686

No Load Growth 962 1167 3651 3651 3651 3763 3958 2185

High Load Growth 995 1269 3544 3544 3544 3745 4839 3585

Low Equipment Price 1023 1247 3333 3333 3703 3863 4718 4194

High Equipment Price 649 848 3068 3068 3109 3305 3424 1119

Low Electricity Price Trend 424 457 1816 1816 1816 1858 1473 -823

High Electricity Price Trend 527 595 2159 2159 2159 2217 1972 -208

Materials Exclusion 486 -73 -116 -1080 NA NA NA NA

-2000

-1000

0

1000

2000

3000

4000

5000

6000

99.16 99.19 99.22 99.25 99.31 99.42 99.5 99.6

Average LCC Savings ($)

Transformer Efficiency (%)

Baseline

Low A & B Distribution

High A & B Distribution

Low Loading

High Loading 

Low Electricity Price

High Electricity Price

Medium Load Growth

High Load Growth

Low Equipment Price

High Equipment Price

Low Electricity Price Trend

High Electricity Price Trend

Materials Exclusion
8D-89

8D.4.1 Design Line 4 Results, Baseline Scenario

Table 8D.4.2 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

Baseline Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 6.59 7.58 2.49 2.49 2.49 2.65 5.86 23.81

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 92.79 91.80 96.89 96.89 96.89 97.17 94.14 76.19

Mean LCC Savings ($) 977 1212 3603 3603 3603 3755 4349 2806

Median LCC Savings ($) 768 2396 3546 3546 3546 3694 4135 2396

Table 8D.4.3 Summary Payback Period Results for Design Line 4 Representative Unit, 

Baseline Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 8.9 10.6 5.8 5.8 5.8 6.1 10.7 19.5

Median Payback (Years) 7.0 9.1 5.6 5.6 5.6 5.8 10.2 18.7

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 558 539 420 420 420 413 352 297

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 57 75 194 194 194 202 263 318

Payback of Average 

Transformer 7.7 9.1 5.6 5.6 5.6 5.8 10.0 18.1
8D-90

Figure 8D.4.2 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, Baseline Scenario

Figure 8D.4.3 Average Payback Period for Design Line 4 

Representative Unit, Baseline Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

12000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-91

8D.4.2 Design Line 4 Results, Low A & B Distribution Scenario

Table 8D.4.4 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 6.98 8.25 2.52 2.52 2.52 2.67 5.62 23.39

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 93.02 91.75 97.48 97.48 97.48 97.33 94.38 76.61

Mean LCC Savings ($) 734 953 3623 3623 3623 3766 4370 2833

Median LCC Savings ($) 717 2425 3558 3558 3558 3698 4152 2425

Table 8D.4.5 Summary Payback Period Results for Design Line 4 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 9.1 11.1 5.8 5.8 5.8 6.1 10.5 19.3

Median Payback (Years) 8.5 10.0 5.6 5.6 5.6 5.8 10.2 18.6

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100 100

Transformers having Undefined 

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

Mean Retail Cost ($) 5,837 6,084 6,433 6,433 6,433 6,489 7,570 10,600

Mean Installation Cost ($) 4,084 4,101 4,202 4,202 4,202 4,234 4,606 4,709

Mean Operating Costs ($) 572 554 421 421 421 413 352 297

Mean Incremental First Cost ($) 385 650 1,100 1,100 1,100 1,188 2,641 5,775

Mean Operating Cost Savings 

($) 45 63 196 196 196 203 264 320

Payback of Average 

Transformer 8.6 10.4 5.6 5.6 5.6 5.9 10.0 18.1
8D-92

Figure 8D.4.4 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, Low A & B Distribution 

Scenario

Figure 8D.4.5 Average Payback Period for Design Line 4 

Representative Unit, Low A & B Distribution 

Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

12000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-93

8D.4.3 Design Line 4 Results, High A & B Distribution Scenario

Table 8D.4.6 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 2.93 2.20 2.20 2.20 2.20 2.75 8.00 27.27

Transformers with No Change 

in LCC (%) 7.11 7.21 7.21 7.21 7.21 2.22 0.00 0.00

Transformers with Net LCC 

Benefit (%) 89.96 90.59 90.59 90.59 90.59 95.03 92.00 72.73

Mean LCC Savings ($) 3019 3412 3412 3412 3412 3626 4133 2535

Median LCC Savings ($) 3070 2095 3441 3441 3441 3657 3876 2095

Table 8D.4.7 Summary Payback Period Results for Design Line 4 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 6.2 5.7 5.7 5.7 5.7 6.1 12.1 21.6

Median Payback (Years) 5.5 5.5 5.5 5.5 5.5 5.6 10.4 19.3

Transformers having Well 

Defined Payback (%) 92.79 92.79 92.79 92.79 92.79 97.77 99.94 100

Transformers having Undefined 

Payback (%) 7.21 7.21 7.21 7.21 7.21 2.23 0.06 0.00

Mean Retail Cost ($) 6,363 6,447 6,447 6,447 6,447 6,503 7,565 10,601

Mean Installation Cost ($) 4,189 4,205 4,205 4,205 4,205 4,224 4,605 4,710

Mean Operating Costs ($) 438 417 417 417 417 408 350 297

Mean Incremental First Cost ($) 896 995 995 995 995 1,070 2,514 5,655

Mean Operating Cost Savings 

($) 160 181 181 181 181 190 248 301

Payback of Average 

Transformer 5.6 5.5 5.5 5.5 5.5 5.6 10.2 18.8
8D-94

Figure 8D.4.6 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, High A & B Distribution 

Scenario

Figure 8D.4.7 Average Payback Period for Design Line 4 

Representative Unit, High A & B Distribution 

Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

12000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-95

8D.4.4 Design Line 4 Results, Low Loading Scenario

Table 8D.4.8 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 9.24 10.93 2.42 2.42 2.42 2.69 8.81 45.84

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 90.14 88.45 96.96 96.96 96.96 97.13 91.19 54.16

Mean LCC Savings ($) 917 1035 3785 3785 3785 3784 2828 391

Median LCC Savings ($) 685 269 3731 3731 3731 3736 2746 269

Table 8D.4.9 Summary Payback Period Results for Design Line 4 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 9.8 11.9 5.7 5.7 5.7 6.1 13.1 25.2

Median Payback (Years) 7.0 9.8 5.4 5.4 5.4 5.8 12.4 24.1

Transformers having Well 

Defined Payback (%) 99.37 99.38 99.38 99.38 99.38 99.80 99.93 100

Transformers having Undefined 

Payback (%) 0.63 0.62 0.62 0.62 0.62 0.20 0.07 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 413 399 268 268 268 266 253 226

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 55 70 200 200 200 203 215 242

Payback of Average 

Transformer 8.0 9.9 5.5 5.5 5.5 5.8 12.2 23.8
8D-96

Figure 8D.4.8 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, Low Loading Scenario

Figure 8D.4.9 Average Payback Period for Design Line 4 

Representative Unit, Low Loading Scenario

-6000

-4000

-2000

0

2000

4000

6000

8000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-97

8D.4.5 Design Line 4 Results, High Loading Scenario

Table 8D.4.10 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

High Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 5.81 6.06 2.60 2.60 2.60 2.62 4.61 14.93

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 93.57 93.32 96.78 96.78 96.78 97.20 95.39 85.07

Mean LCC Savings ($) 1031 1377 3435 3435 3435 3728 5760 5045

Median LCC Savings ($) 800 4315 3370 3370 3370 3659 5363 4315

Table 8D.4.11 Summary Payback Period Results for Design Line 4 Representative Unit, 

High Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 8.3 9.7 6.0 6.0 6.0 6.1 9.2 16.2

Median Payback (Years) 6.8 8.4 5.7 5.7 5.7 5.8 8.8 15.5

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 692 670 561 561 561 549 443 362

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 59 80 189 189 189 201 307 389

Payback of Average 

Transformer 7.5 8.6 5.8 5.8 5.8 5.9 8.6 14.8
8D-98

Figure 8D.4.10 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, High Loading Scenario

Figure 8D.4.11 Average Payback Period for Design Line 4 

Representative Unit, High Loading Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

12000

14000

16000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-99

8D.4.6 Design Line 4 Results, Low Electricity Price Scenario

Table 8D.4.12 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 8.68 9.88 2.97 2.97 2.97 3.07 7.22 30.94

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 90.70 89.50 96.41 96.41 96.41 96.75 92.78 69.06

Mean LCC Savings ($) 826 1013 3101 3101 3101 3230 3632 1927

Median LCC Savings ($) 653 1553 3049 3049 3049 3177 3424 1553

Table 8D.4.13 Summary Payback Period Results for Design Line 4 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 9.9 11.8 6.5 6.5 6.5 6.8 11.9 21.6

Median Payback (Years) 7.8 10.1 6.2 6.2 6.2 6.5 11.4 20.8

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 507 491 384 384 384 378 322 272

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 51 67 174 174 174 180 236 286

Payback of Average 

Transformer 8.6 10.2 6.3 6.3 6.3 6.5 11.1 20.2
8D-100

Figure 8D.4.12 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, Low Electricity Price Scenario

Figure 8D.4.13 Average Payback Period for Design Line 4 

Representative Unit, Low Electricity Price Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-101

8D.4.7 Design Line 4 Results, High Electricity Price Scenario

Table 8D.4.14 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 5.15 6.01 2.16 2.16 2.16 2.32 5.05 18.57

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 94.23 93.37 97.22 97.22 97.22 97.50 94.95 81.43

Mean LCC Savings ($) 1127 1412 4106 4106 4106 4280 5066 3686

Median LCC Savings ($) 885 3258 4037 4037 4037 4213 4836 3258

Table 8D.4.15 Summary Payback Period Results for Design Line 4 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 8.0 9.6 5.3 5.3 5.3 5.5 9.7 17.7

Median Payback (Years) 6.3 8.3 5.0 5.0 5.0 5.3 9.3 16.9

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 608 588 456 456 456 448 382 321

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 63 83 215 215 215 223 290 350

Payback of Average 

Transformer 7.0 8.3 5.1 5.1 5.1 5.3 9.1 16.5
8D-102

Figure 8D.4.14 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, High Electricity Price Scenario

Figure 8D.4.15 Average Payback Period for Design Line 4 

Representative Unit, High Electricity Price Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

12000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-103

8D.4.8 Design Line 4 Results, No Load Growth Scenario

Table 8D.4.16 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 6.85 7.83 2.49 2.49 2.49 2.65 6.09 26.79

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 92.53 91.55 96.89 96.89 96.89 97.17 93.91 73.21

Mean LCC Savings ($) 962 1167 3651 3651 3651 3763 3958 2185

Median LCC Savings ($) 751 1912 3591 3591 3591 3703 3810 1912

Table 8D.4.17 Summary Payback Period Results for Design Line 4 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 8.9 10.6 5.8 5.8 5.8 6.1 10.7 19.5

Median Payback (Years) 7.0 9.1 5.6 5.6 5.6 5.8 10.2 18.7

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 558 539 420 420 420 413 352 297

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 57 75 194 194 194 202 263 318

Payback of Average 

Transformer 7.7 9.1 5.6 5.6 5.6 5.8 10.0 18.1
8D-104

Figure 8D.4.16 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, No Load Growth Scenario

Figure 8D.4.17 Average Payback Period for Design Line 4 

Representative Unit, No Load Growth Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-105

8D.4.9 Design Line 4 Results, High Load Growth Scenario

Table 8D.4.18 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 6.44 7.18 2.49 2.49 2.49 2.63 5.60 20.96

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 92.94 92.20 96.89 96.89 96.89 97.19 94.40 79.04

Mean LCC Savings ($) 995 1269 3544 3544 3544 3745 4839 3585

Median LCC Savings ($) 782 3004 3483 3483 3483 3683 4529 3004

Table 8D.4.19 Summary Payback Period Results for Design Line 4 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 8.9 10.6 5.8 5.8 5.8 6.1 10.7 19.5

Median Payback (Years) 7.0 9.1 5.6 5.6 5.6 5.8 10.2 18.7

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 558 539 420 420 420 413 352 297

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 57 75 194 194 194 202 263 318

Payback of Average 

Transformer 7.7 9.1 5.6 5.6 5.6 5.8 10.0 18.1
8D-106

Figure 8D.4.18 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, High Load Growth Scenario

Figure 8D.4.19 Average Payback Period for Design Line 4 

Representative Unit, High Load Growth Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

12000

14000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-107

8D.4.10 Design Line 4 Results, Low Equipment Price Scenario

Table 8D.4.20 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 3.96 4.85 4.02 4.02 2.14 2.22 4.54 11.86

Transformers with No Change 

in LCC (%) 0.75 0.75 0.75 0.75 0.75 0.29 0.00 0.00

Transformers with Net LCC 

Benefit (%) 95.29 94.40 95.23 95.23 97.11 97.49 95.46 88.14

Mean LCC Savings ($) 1023 1247 3333 3333 3703 3863 4718 4194

Median LCC Savings ($) 739 3793 3319 3319 3650 3817 4503 3793

Table 8D.4.21 Summary Payback Period Results for Design Line 4 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 7.7 9.2 5.4 5.4 5.2 5.4 9.1 14.9

Median Payback (Years) 7.3 8.8 4.9 4.9 5.0 5.2 8.7 14.2

Transformers having Well 

Defined Payback (%) 99.25 99.25 99.17 99.17 99.25 99.71 100 100

Transformers having Undefined 

Payback (%) 0.75 0.75 0.83 0.83 0.75 0.29 0.00 0.00

Mean Retail Cost ($) 4,707 4,837 5,121 5,121 5,121 5,162 5,985 8,036

Mean Installation Cost ($) 4,045 4,112 4,128 4,128 4,203 4,234 4,607 4,710

Mean Operating Costs ($) 555 541 433 433 420 413 352 297

Mean Incremental First Cost ($) 386 584 883 883 958 1,030 2,227 4,380

Mean Operating Cost Savings 

($) 58 73 180 180 193 201 262 317

Payback of Average 

Transformer 6.6 8.0 4.9 4.9 5.0 5.1 8.5 13.8
8D-108

Figure 8D.4.20 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, Low Equipment Price Scenario

Figure 8D.4.21 Average Payback Period for Design Line 4 

Representative Unit, Low Equipment Price Scenario

-4000

-2000

0

2000

4000

6000

8000

10000

12000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-109

8D.4.11 Design Line 4 Results, High Equipment Price Scenario

Table 8D.4.22 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 13.33 13.95 4.56 4.56 4.19 4.14 10.61 42.14

Transformers with No Change 

in LCC (%) 0.28 0.28 0.28 0.28 0.28 0.11 0.00 0.00

Transformers with Net LCC 

Benefit (%) 86.39 85.77 95.16 95.16 95.53 95.75 89.39 57.86

Mean LCC Savings ($) 649 848 3068 3068 3109 3305 3424 1119

Median LCC Savings ($) 456 735 3003 3003 3031 3246 3209 735

Table 8D.4.23 Summary Payback Period Results for Design Line 4 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 14.2 15.1 8.5 8.5 8.4 8.5 14.2 24.8

Median Payback (Years) 13.5 14.5 8.2 8.2 8.2 8.3 13.6 23.8

Transformers having Well 

Defined Payback (%) 99.72 99.72 99.72 99.72 99.72 99.89 100 100

Transformers having Undefined 

Payback (%) 0.28 0.28 0.28 0.28 0.28 0.11 0.00 0.00

Mean Retail Cost ($) 7,884 8,109 8,631 8,631 8,630 8,707 10,193 13,932

Mean Installation Cost ($) 4,055 4,111 4,194 4,194 4,202 4,227 4,609 4,709

Mean Operating Costs ($) 560 543 421 421 420 410 351 297

Mean Incremental First Cost ($) 678 958 1,564 1,564 1,572 1,674 3,542 7,380

Mean Operating Cost Savings 

($) 55 72 194 194 195 205 264 318

Payback of Average 

Transformer 12.3 13.2 8.1 8.1 8.0 8.2 13.4 23.2
8D-110

Figure 8D.4.22 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, High Equipment Price 

Scenario

Figure 8D.4.23 Average Payback Period for Design Line 4 

Representative Unit, High Equipment Price 

Scenario

-6000

-4000

-2000

0

2000

4000

6000

8000

10000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-111

8D.4.12 Design Line 4 Results, Low Electricity Price Trend Scenario

Table 8D.4.24 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 20.48 21.96 2.52 2.52 2.52 2.69 9.27 71.29

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 78.90 77.42 96.86 96.86 96.86 97.13 90.73 28.71

Mean LCC Savings ($) 424 457 1816 1816 1816 1858 1473 -823

Median LCC Savings ($) 349 -935 1840 1840 1840 1876 1440 -935

Table 8D.4.25 Summary Payback Period Results for Design Line 4 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 9.2 11.0 6.0 6.0 6.0 6.3 11.1 20.2

Median Payback (Years) 7.2 9.4 5.8 5.8 5.8 6.0 10.6 19.4

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 537 520 404 404 404 397 340 287

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 55 73 188 188 188 195 253 306

Payback of Average 

Transformer 8.0 9.5 5.8 5.8 5.8 6.0 10.4 18.9
8D-112

Figure 8D.4.24 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, Low Electricity Price Trend 

Scenario

Figure 8D.4.25 Average Payback Period for Design Line 4 

Representative Unit, Low Electricity Price Trend 

Scenario

-4000

-3000

-2000

-1000

0

1000

2000

3000

4000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-113

8D.4.13 Design Line 4 Results, High Electricity Price Trend Scenario

Table 8D.4.26 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 14.92 15.86 2.39 2.39 2.39 2.54 6.23 57.06

Transformers with No Change 

in LCC (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Transformers with Net LCC 

Benefit (%) 84.46 83.52 96.99 96.99 96.99 97.28 93.77 42.94

Mean LCC Savings ($) 527 595 2159 2159 2159 2217 1972 -208

Median LCC Savings ($) 425 -330 2177 2177 2177 2225 1943 -330

Table 8D.4.27 Summary Payback Period Results for Design Line 4 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 8.9 10.6 5.8 5.8 5.8 6.1 10.7 19.5

Median Payback (Years) 7.0 9.1 5.6 5.6 5.6 5.8 10.2 18.7

Transformers having Well 

Defined Payback (%) 99.38 99.38 99.38 99.38 99.38 99.82 100 100

Transformers having Undefined 

Payback (%) 0.62 0.62 0.62 0.62 0.62 0.18 0.00 0.00

Mean Retail Cost ($) 5,892 6,122 6,434 6,434 6,434 6,490 7,569 10,600

Mean Installation Cost ($) 4,095 4,112 4,202 4,202 4,202 4,233 4,606 4,709

Mean Operating Costs ($) 555 537 417 417 417 410 350 295

Mean Incremental First Cost ($) 440 688 1,090 1,090 1,090 1,177 2,630 5,764

Mean Operating Cost Savings 

($) 57 75 195 195 195 203 262 317

Payback of Average 

Transformer 7.7 9.1 5.6 5.6 5.6 5.8 10.0 18.2
8D-114

Figure 8D.4.26 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, High Electricity Price Trend 

Scenario

Figure 8D.4.27 Average Payback Period for Design Line 4 

Representative Unit, High Electricity Price Trend 

Scenario

-4000

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-115

8D.4.14 Design Line 4 Results, Materials Exclusion Scenario

Table 8D.4.28 Summary Life-Cycle Cost Results for Design Line 4 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Efficiency (%) 99.16 99.19 99.22 99.25 99.31 99.42 99.50 99.60

Transformers with Net LCC 

Cost (%) 14.75 57.53 61.28 75.83 0.00 0.00 0.00 0.00

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 85.25 42.47 38.72 24.17 0.00 0.00 0.00 0.00

Mean LCC Savings ($) 486 -73 -116 -1080 NA NA NA NA

Median LCC Savings ($) 439 NA -396 -1467 NA NA NA NA

Table 8D.4.29 Summary Payback Period Results for Design Line 4 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 1.5 2 3 4 5 6 7

Mean Payback (Years) 15.8 36.7 36.4 45.4 NA NA NA NA

Median Payback (Years) 15.1 27.4 33.0 41.7 NA NA NA NA

Transformers having Well 

Defined Payback (%) 99.99 97.93 100 100 0.00 0.00 0.00 0.00

Transformers having Undefined 

Payback (%) 0.01 2.07 0.00 0.00 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 6,023 7,124 7,813 9,340 NA NA NA NA

Mean Installation Cost ($) 4,176 4,355 4,293 4,576 NA NA NA NA

Mean Operating Costs ($) 571 549 532 503 NA NA NA NA

Mean Incremental First Cost ($) 659 1,939 2,566 4,376 NA NA NA NA

Mean Operating Cost Savings 

($) 44 67 84 113 NA NA NA NA

Payback of Average 

Transformer 14.8 29.1 30.7 38.6 NA NA NA NA
8D-116

Figure 8D.4.28 Average Life-Cycle Cost Savings for Design Line 4 

Representative Unit, Materials Exclusion Scenario

Figure 8D.4.29 Average Payback Period for Design Line 4 

Representative Unit, Materials Exclusion Scenario

-4000

-3000

-2000

-1000

0

1000

2000

3000

4000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 4 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 4 Average Payback Period

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

median

average
8D-117

8D.5 DESIGN LINE 5 RESULTS

Figure 8D.5.1 Average LCC Savings ($) by Scenario for Design 

Line 5

Table 8D.5.1 LCC Savings ($), Summary Table for Design Line 5

Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Baseline 3668 4486 6852 8616 10382 12014 4619

Low A & B Distribution 3385 4244 6642 8396 10156 11803 4413

High A & B Distribution 6490 6974 8969 10827 12620 14144 6692

Low Loading 13996 15029 15123 14740 14382 12046 -3309

High Loading -23972 -23728 -15284 -7772 -322 11928 25835

Low Electricity Price 2727 3449 5554 6946 8427 9548 691

High Electricity Price 4608 5524 8149 10286 12338 14480 8547

No Load Growth 6293 7166 8955 10174 11402 12026 2612

High Load Growth 381 1132 4218 6664 9105 11996 7129

Low Equipment Price 6937 6261 7074 9294 11328 13778 13881

High Equipment Price 3136 2445 4557 5782 7083 7586 -4032

Low Electricity Price Trend 2185 2696 3731 3788 4163 3272 -10737

High Electricity Price Trend 2779 3356 4581 4905 5487 4967 -7996

Materials Exclusion 1064 1861 2987 NA NA NA NA

-30000

-20000

-10000

0

10000

20000

30000

99.48 99.49 99.51 99.54 99.57 99.61 99.69

Average LCC Savings ($)

Transformer Efficiency (%)

Baseline

Low A & B Distribution

High A & B Distribution

Low Loading

High Loading 

Low Electricity Price

High Electricity Price

Medium Load Growth

High Load Growth

Low Equipment Price

High Equipment Price

Low Electricity Price Trend

High Electricity Price Trend

Materials Exclusion
8D-118

8D.5.1 Design Line 5 Results, Baseline Scenario

Table 8D.5.2 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

Baseline Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 30.50 28.30 19.89 14.76 9.83 9.05 41.91

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 69.11 71.35 80.02 85.23 90.17 90.95 58.09

Mean LCC Savings ($) 3668 4486 6852 8616 10382 12014 4619

Median LCC Savings ($) 4304 3015 6763 8095 9681 11190 3015

Table 8D.5.3 Summary Payback Period Results for Design Line 5 Representative Unit, 

Baseline Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 10.6 9.9 9.2 10.1 10.1 12.2 23.7

Median Payback (Years) 6.5 6.3 6.5 8.5 9.1 11.4 22.5

Transformers having Well 

Defined Payback (%) 91.48 92.85 97.46 99.68 100 100 100

Transformers having Undefined 

Payback (%) 8.52 7.15 2.54 0.32 0.00 0.00 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 2,840 2,800 2,716 2,586 2,491 2,321 1,809

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 457 496 581 710 805 975 1,487

Payback of Average 

Transformer 7.2 6.8 6.6 8.3 8.9 11.2 22.1
8D-119

Figure 8D.5.2 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, Baseline Scenario

Figure 8D.5.3 Average Payback Period for Design Line 5 

Representative Unit, Baseline Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-120

8D.5.2 Design Line 5 Results, Low A & B Distribution Scenario

Table 8D.5.4 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 33.02 30.68 21.42 15.48 10.01 8.32 41.26

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 66.98 69.32 78.58 84.52 89.99 91.68 58.74

Mean LCC Savings ($) 3385 4244 6642 8396 10156 11803 4413

Median LCC Savings ($) 4157 3146 6734 8059 9696 11236 3146

Table 8D.5.5 Summary Payback Period Results for Design Line 5 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 10.9 10.2 9.3 10.0 9.8 11.7 22.9

Median Payback (Years) 6.5 6.3 6.5 8.4 9.0 11.2 22.2

Transformers having Well 

Defined Payback (%) 91.17 92.57 97.30 99.67 100 100 100

Transformers having Undefined 

Payback (%) 8.83 7.43 2.70 0.33 0.00 0.00 0.00

Mean Retail Cost ($) 28,571 28,602 29,038 30,867 31,980 35,302 56,797

Mean Installation Cost ($) 8,551 8,575 8,631 8,875 9,032 9,482 9,834

Mean Operating Costs ($) 2,844 2,801 2,716 2,587 2,491 2,322 1,809

Mean Incremental First Cost ($) 3,464 3,520 4,011 6,084 7,354 11,126 32,973

Mean Operating Cost Savings 

($) 475 517 602 732 827 997 1,509

Payback of Average 

Transformer 7.3 6.8 6.7 8.3 8.9 11.2 21.8
8D-121

Figure 8D.5.4 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, Low A & B Distribution 

Scenario

Figure 8D.5.5 Average Payback Period for Design Line 5 

Representative Unit, Low A & B Distribution 

Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-122

8D.5.3 Design Line 5 Results, High A & B Distribution Scenario

Table 8D.5.6 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 8.94 7.92 7.41 9.09 9.07 15.29 47.25

Transformers with No Change 

in LCC (%) 3.25 3.01 0.81 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 87.81 89.07 91.78 90.90 90.93 84.71 52.75

Mean LCC Savings ($) 6490 6974 8969 10827 12620 14144 6692

Median LCC Savings ($) 5242 1429 7154 8476 9833 10614 1429

Table 8D.5.7 Summary Payback Period Results for Design Line 5 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 8.3 7.8 8.4 11.3 12.2 16.5 30.6

Median Payback (Years) 6.2 6.0 6.4 9.4 10.2 13.3 26.1

Transformers having Well 

Defined Payback (%) 95.65 96.06 98.85 99.98 100 100 100

Transformers having Undefined 

Payback (%) 4.35 3.94 1.15 0.02 0.00 0.00 0.00

Mean Retail Cost ($) 28,620 28,657 29,091 30,948 31,998 35,338 56,805

Mean Installation Cost ($) 8,585 8,583 8,639 8,886 9,033 9,486 9,835

Mean Operating Costs ($) 2,802 2,786 2,713 2,579 2,485 2,319 1,809

Mean Incremental First Cost ($) 1,882 1,917 2,406 4,510 5,707 9,500 31,316

Mean Operating Cost Savings 

($) 307 324 397 531 625 791 1,301

Payback of Average 

Transformer 6.1 5.9 6.1 8.5 9.1 12.0 24.1
8D-123

Figure 8D.5.6 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, High A & B Distribution 

Scenario

Figure 8D.5.7 Average Payback Period for Design Line 5 

Representative Unit, High A & B Distribution 

Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

50000

60000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

70

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-124

8D.5.4 Design Line 5 Results, Low Loading Scenario

Table 8D.5.8 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 4.86 3.26 4.61 6.90 8.01 12.77 61.86

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 94.75 96.39 95.30 93.09 91.99 87.23 38.14

Mean LCC Savings ($) 13996 15029 15123 14740 14382 12046 -3309

Median LCC Savings ($) 13513 -3878 14729 14322 14095 11762 -3878

Table 8D.5.9 Summary Payback Period Results for Design Line 5 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 6.4 5.5 6.6 9.0 10.5 14.8 30.5

Median Payback (Years) 4.4 4.2 4.7 6.6 7.7 11.2 26.7

Transformers having Well 

Defined Payback (%) 99.10 99.54 99.59 99.97 99.96 99.93 100

Transformers having Undefined 

Payback (%) 0.90 0.46 0.41 0.03 0.04 0.07 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 1,519 1,472 1,462 1,402 1,376 1,335 1,082

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 792 838 849 909 935 975 1,228

Payback of Average 

Transformer 4.2 4.0 4.5 6.5 7.7 11.2 26.7
8D-125

Figure 8D.5.8 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, Low Loading Scenario

Figure 8D.5.9 Average Payback Period for Design Line 5 

Representative Unit, Low Loading Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

70

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-126

8D.5.5 Design Line 5 Results, High Loading Scenario

Table 8D.5.10 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

High Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 78.15 81.29 75.35 67.51 52.51 21.27 18.87

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 21.46 18.36 24.56 32.48 47.49 78.73 81.13

Mean LCC Savings ($) -23972 -23728 -15284 -7772 -322 11928 25835

Median LCC Savings ($) -17106 18936 -10621 -5871 -736 8258 18936

Table 8D.5.11 Summary Payback Period Results for Design Line 5 Representative Unit, 

High Loading Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 17.1 18.7 19.9 22.9 20.6 14.4 16.8

Median Payback (Years) 7.9 9.3 10.4 13.7 13.3 12.3 16.3

Transformers having Well 

Defined Payback (%) 37.08 36.35 48.38 66.20 83.39 98.78 100

Transformers having Undefined 

Payback (%) 62.92 63.65 51.62 33.80 16.61 1.22 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 6,375 6,355 6,072 5,755 5,475 4,960 3,754

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) -440 -420 -137 179 460 975 2,180

Payback of Average 

Transformer -7.5 -8.0 -28.0 33.0 15.6 11.2 15.0
8D-127

Figure 8D.5.10 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, High Loading Scenario

Figure 8D.5.11 Average Payback Period for Design Line 5 

Representative Unit, High Loading Scenario

-120000

-100000

-80000

-60000

-40000

-20000

0

20000

40000

60000

80000

100000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-128

8D.5.6 Design Line 5 Results, Low Electricity Price Scenario

Table 8D.5.12 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 32.71 30.61 22.62 17.73 12.60 11.71 52.62

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 66.90 69.04 77.29 82.26 87.40 88.29 47.38

Mean LCC Savings ($) 2727 3449 5554 6946 8427 9548 691

Median LCC Savings ($) 3442 -856 5502 6468 7808 8850 -856

Table 8D.5.13 Summary Payback Period Results for Design Line 5 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 11.7 11.0 10.3 11.5 11.3 13.6 26.4

Median Payback (Years) 7.2 7.0 7.3 9.5 10.2 12.8 25.1

Transformers having Well 

Defined Payback (%) 90.67 92.05 96.99 99.57 99.97 100 100

Transformers having Undefined 

Payback (%) 9.33 7.95 3.01 0.43 0.03 0.00 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 2,570 2,535 2,458 2,341 2,254 2,100 1,637

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 402 437 514 632 718 872 1,335

Payback of Average 

Transformer 8.2 7.7 7.5 9.4 10.0 12.6 24.6
8D-129

Figure 8D.5.12 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, Low Electricity Price Scenario

Figure 8D.5.13 Average Payback Period for Design Line 5 

Representative Unit, Low Electricity Price Scenario

-30000

-20000

-10000

0

10000

20000

30000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-130

8D.5.7 Design Line 5 Results, High Electricity Price Scenario

Table 8D.5.14 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 28.50 26.15 17.91 12.60 8.13 7.20 33.60

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 71.11 73.50 82.00 87.39 91.87 92.80 66.40

Mean LCC Savings ($) 4608 5524 8149 10286 12338 14480 8547

Median LCC Savings ($) 5212 6790 7964 9671 11558 13559 6790

Table 8D.5.15 Summary Payback Period Results for Design Line 5 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 9.6 9.0 8.3 9.1 9.1 11.0 21.6

Median Payback (Years) 5.9 5.7 5.9 7.7 8.2 10.3 20.4

Transformers having Well 

Defined Payback (%) 92.01 93.33 97.74 99.75 100 100 100

Transformers having Undefined 

Payback (%) 7.99 6.67 2.26 0.25 0.00 0.00 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 3,109 3,065 2,973 2,831 2,727 2,542 1,981

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 511 555 647 789 893 1,078 1,639

Payback of Average 

Transformer 6.5 6.0 5.9 7.5 8.0 10.2 20.0
8D-131

Figure 8D.5.14 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, High Electricity Price Scenario

Figure 8D.5.15 Average Payback Period for Design Line 5 

Representative Unit, High Electricity Price Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

50000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-132

8D.5.8 Design Line 5 Results, No Load Growth Scenario

Table 8D.5.16 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 22.02 19.57 13.53 10.58 7.76 9.35 45.83

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 77.59 80.08 86.38 89.41 92.24 90.65 54.17

Mean LCC Savings ($) 6293 7166 8955 10174 11402 12026 2612

Median LCC Savings ($) 6084 1436 8440 9482 10701 11342 1436

Table 8D.5.17 Summary Payback Period Results for Design Line 5 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 10.6 9.9 9.2 10.1 10.1 12.2 23.7

Median Payback (Years) 6.5 6.3 6.5 8.5 9.1 11.4 22.5

Transformers having Well 

Defined Payback (%) 91.48 92.85 97.46 99.68 100 100 100

Transformers having Undefined 

Payback (%) 8.52 7.15 2.54 0.32 0.00 0.00 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 2,840 2,800 2,716 2,586 2,491 2,321 1,809

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 457 496 581 710 805 975 1,487

Payback of Average 

Transformer 7.2 6.8 6.6 8.3 8.9 11.2 22.1
8D-133

Figure 8D.5.16 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, No Load Growth Scenario

Figure 8D.5.17 Average Payback Period for Design Line 5 

Representative Unit, No Load Growth Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-134

8D.5.9 Design Line 5 Results, High Load Growth Scenario

Table 8D.5.18 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 39.92 38.32 28.71 21.11 13.39 9.40 38.13

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 59.69 61.33 71.20 78.88 86.61 90.60 61.87

Mean LCC Savings ($) 381 1132 4218 6664 9105 11996 7129

Median LCC Savings ($) 2306 4730 4812 6377 8341 10966 4730

Table 8D.5.19 Summary Payback Period Results for Design Line 5 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 10.6 9.9 9.2 10.1 10.1 12.2 23.7

Median Payback (Years) 6.5 6.3 6.5 8.5 9.1 11.4 22.5

Transformers having Well 

Defined Payback (%) 91.48 92.85 97.46 99.68 100 100 100

Transformers having Undefined 

Payback (%) 8.52 7.15 2.54 0.32 0.00 0.00 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 2,840 2,800 2,716 2,586 2,491 2,321 1,809

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 457 496 581 710 805 975 1,487

Payback of Average 

Transformer 7.2 6.8 6.6 8.3 8.9 11.2 22.1
8D-135

Figure 8D.5.18 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, High Load Growth Scenario

Figure 8D.5.19 Average Payback Period for Design Line 5 

Representative Unit, High Load Growth Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

50000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-136

8D.5.10 Design Line 5 Results, Low Equipment Price Scenario

Table 8D.5.20 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 4.11 16.16 20.65 14.74 9.26 6.29 18.29

Transformers with No Change 

in LCC (%) 0.59 0.54 0.11 0.03 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 95.30 83.30 79.24 85.23 90.74 93.71 81.71

Mean LCC Savings ($) 6937 6261 7074 9294 11328 13778 13881

Median LCC Savings ($) 6442 12504 7080 8853 10680 13022 12504

Table 8D.5.21 Summary Payback Period Results for Design Line 5 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 5.4 7.9 8.7 9.2 8.7 10.1 17.0

Median Payback (Years) 4.7 6.1 5.7 7.2 7.7 9.6 16.2

Transformers having Well 

Defined Payback (%) 98.71 95.32 96.53 99.42 99.98 100 100

Transformers having Undefined 

Payback (%) 1.29 4.68 3.47 0.58 0.02 0.00 0.00

Mean Retail Cost ($) 21,815 22,648 23,004 24,405 25,239 27,772 42,037

Mean Installation Cost ($) 7,879 8,273 8,633 8,877 9,032 9,483 9,835

Mean Operating Costs ($) 2,974 2,854 2,715 2,585 2,490 2,321 1,809

Mean Incremental First Cost ($) 1,615 2,842 3,558 5,203 6,192 9,176 23,793

Mean Operating Cost Savings 

($) 335 455 593 723 818 987 1,500

Payback of Average 

Transformer 4.8 6.3 6.0 7.2 7.6 9.3 15.9
8D-137

Figure 8D.5.20 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, Low Equipment Price Scenario

Figure 8D.5.21 Average Payback Period for Design Line 5 

Representative Unit, Low Equipment Price Scenario

-20000

-10000

0

10000

20000

30000

40000

50000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-138

8D.5.11 Design Line 5 Results, High Equipment Price Scenario

Table 8D.5.22 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 29.65 36.21 27.70 23.23 17.64 19.91 64.03

Transformers with No Change 

in LCC (%) 0.13 0.11 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 70.22 63.68 72.30 76.77 82.36 80.09 35.97

Mean LCC Savings ($) 3136 2445 4557 5782 7083 7586 -4032

Median LCC Savings ($) 3126 -5673 4340 5172 6345 6886 -5673

Table 8D.5.23 Summary Payback Period Results for Design Line 5 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 18.7 15.1 13.8 14.4 14.2 16.9 29.9

Median Payback (Years) 11.7 10.1 10.5 12.7 13.2 15.9 28.5

Transformers having Well 

Defined Payback (%) 95.74 93.64 98.05 99.79 100 100 100

Transformers having Undefined 

Payback (%) 4.26 6.36 1.95 0.21 0.00 0.00 0.00

Mean Retail Cost ($) 38,299 38,735 39,495 41,919 43,241 47,812 73,377

Mean Installation Cost ($) 8,147 8,566 8,638 8,879 9,033 9,482 9,834

Mean Operating Costs ($) 2,930 2,805 2,715 2,583 2,496 2,322 1,809

Mean Incremental First Cost ($) 4,279 5,133 5,966 8,630 10,106 15,126 41,044

Mean Operating Cost Savings 

($) 354 478 568 700 788 962 1,475

Payback of Average 

Transformer 12.1 10.7 10.5 12.3 12.8 15.7 27.8
8D-139

Figure 8D.5.22 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, High Equipment Price 

Scenario

Figure 8D.5.23 Average Payback Period for Design Line 5 

Representative Unit, High Equipment Price 

Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

70

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-140

8D.5.12 Design Line 5 Results, Low Electricity Price Trend Scenario

Table 8D.5.24 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 30.94 28.02 21.38 19.93 15.86 20.81 94.36

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 68.67 71.63 78.53 80.06 84.14 79.19 5.64

Mean LCC Savings ($) 2185 2696 3731 3788 4163 3272 -10737

Median LCC Savings ($) 2539 -10991 3824 3698 3989 3038 -10991

Table 8D.5.25 Summary Payback Period Results for Design Line 5 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 10.8 10.1 9.4 10.4 10.4 12.6 24.7

Median Payback (Years) 6.7 6.4 6.7 8.7 9.4 11.8 23.3

Transformers having Well 

Defined Payback (%) 92.02 93.29 97.74 99.74 100 100 100

Transformers having Undefined 

Payback (%) 7.98 6.71 2.26 0.26 0.00 0.00 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 2,715 2,677 2,597 2,473 2,383 2,222 1,733

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 450 488 568 692 782 943 1,432

Payback of Average 

Transformer 7.3 6.9 6.8 8.6 9.2 11.6 22.9
8D-141

Figure 8D.5.24 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, Low Electricity Price Trend 

Scenario

Figure 8D.5.25 Average Payback Period for Design Line 5 

Representative Unit, Low Electricity Price Trend 

Scenario

-25000

-20000

-15000

-10000

-5000

0

5000

10000

15000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-142

8D.5.13 Design Line 5 Results, High Electricity Price Trend Scenario

Table 8D.5.26 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 29.19 26.26 19.33 16.77 12.53 13.20 85.13

Transformers with No Change 

in LCC (%) 0.39 0.35 0.09 0.01 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 70.42 73.39 80.58 83.22 87.47 86.80 14.87

Mean LCC Savings ($) 2779 3356 4581 4905 5487 4967 -7996

Median LCC Savings ($) 3161 -8287 4695 4806 5306 4694 -8287

Table 8D.5.27 Summary Payback Period Results for Design Line 5 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 10.4 9.7 9.1 10.0 10.0 12.2 23.8

Median Payback (Years) 6.4 6.2 6.4 8.4 9.1 11.4 22.5

Transformers having Well 

Defined Payback (%) 92.05 93.32 97.78 99.74 100 100 100

Transformers having Undefined 

Payback (%) 7.95 6.68 2.22 0.26 0.00 0.00 0.00

Mean Retail Cost ($) 28,575 28,608 29,043 30,875 31,982 35,306 56,798

Mean Installation Cost ($) 8,554 8,576 8,632 8,876 9,032 9,483 9,834

Mean Operating Costs ($) 2,810 2,771 2,688 2,560 2,466 2,300 1,794

Mean Incremental First Cost ($) 3,301 3,355 3,845 5,922 7,185 10,959 32,803

Mean Operating Cost Savings 

($) 468 508 591 719 812 978 1,485

Payback of Average 

Transformer 7.0 6.6 6.5 8.2 8.8 11.2 22.1
8D-143

Figure 8D.5.26 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, High Electricity Price Trend 

Scenario

Figure 8D.5.27 Average Payback Period for Design Line 5 

Representative Unit, High Electricity Price Trend 

Scenario

-25000

-20000

-15000

-10000

-5000

0

5000

10000

15000

20000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-144

8D.5.14 Design Line 5 Results, Materials Exclusion Scenario

Table 8D.5.28 Summary Life-Cycle Cost Results for Design Line 5 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Efficiency (%) 99.48 99.49 99.51 99.54 99.57 99.61 99.69

Transformers with Net LCC 

Cost (%) 46.93 47.73 39.79 0.00 0.00 0.00 0.00

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 53.07 52.27 60.21 0.00 0.00 0.00 0.00

Mean LCC Savings ($) 1064 1861 2987 NA NA NA NA

Median LCC Savings ($) 326 NA 1646 NA NA NA NA

Table 8D.5.29 Summary Payback Period Results for Design Line 5 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 1.5 2 3 4 5 6

Mean Payback (Years) 32.7 34.6 27.1 NA NA NA NA

Median Payback (Years) 24.5 26.5 22.7 NA NA NA NA

Transformers having Well 

Defined Payback (%) 96.10 95.70 99.98 0.00 0.00 0.00 0.00

Transformers having Undefined 

Payback (%) 3.90 4.30 0.02 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 30,764 32,281 34,985 NA NA NA NA

Mean Installation Cost ($) 9,478 9,463 8,868 NA NA NA NA

Mean Operating Costs ($) 3,057 2,999 2,849 NA NA NA NA

Mean Incremental First Cost ($) 6,617 8,119 10,230 NA NA NA NA

Mean Operating Cost Savings 

($) 258 316 466 NA NA NA NA

Payback of Average 

Transformer 25.7 25.7 21.9 NA NA NA NA
8D-145

Figure 8D.5.28 Average Life-Cycle Cost Savings for Design Line 5 

Representative Unit, Materials Exclusion Scenario

Figure 8D.5.29 Average Payback Period for Design Line 5 

Representative Unit, Materials Exclusion Scenario

-10000

-5000

0

5000

10000

15000

20000

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average LCC Savings ($)

Efficiency Level

Design Line 5 Average LCC Savings

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

median

average

0

20

40

60

80

100

120

EL 1 EL 1.5 EL 2 EL 3 EL 4 EL 5 EL 6

Average Payback Period (years)

Efficiency Level

Design Line 5 Average Payback Period

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

median

average
8D-146

8D.6 DESIGN LINE 7 RESULTS

Figure 8D.6.1 Average LCC Savings ($) by Scenario for Design 

Line 7

Table 8D.6.1 Average LCC Savings ($), Summary Table for Design Line 7

Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Baseline 1526 1526 1678 1838 2045 2280 212

Low A & B Distribution 1486 1486 1677 1832 2006 2276 171

High A & B Distribution 1608 1608 1608 1811 1935 2174 63

Low Loading 1386 1386 1579 1712 2027 2109 -203

High Loading 1716 1716 1883 2073 1948 2635 1017

Low Electricity Price 1281 1281 1448 1569 1669 1892 -224

High Electricity Price 1694 1694 1900 2087 2339 2652 559

Medium Load Growth 1532 1532 1713 1874 1996 2339 322

High Load Growth 1578 1578 1759 1929 1982 2421 515

Low Equipment Price 1632 1632 1805 2046 2406 2718 1035

High Equipment Price 1258 1258 1404 1251 1491 1628 -1473

Low Electricity Price Trend 1439 1439 1619 1767 1927 2183 61

High Electricity Price Trend 1541 1541 1736 1898 2088 2376 284

Materials Exclusion 1487 1487 1676 1584 1035 NA NA
8D-147

8D.6.1 Design Line 7 Results, Baseline Scenario

Table 8D.6.2 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

Baseline Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.5 1.5 1.3 1.7 2.6 3.3 45.6

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.4 98.4 98.7 98.3 97.4 96.7 54.4

Mean LCC Savings ($) 1526 1526 1678 1838 2045 2280 212

Median LCC Savings ($) 1471 1471 1661 1809 1987 2250 137

Table 8D.6.3 Summary Payback Period Results for Design Line 7 Representative Unit, 

Baseline Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.1 4.1 3.8 4.3 5.6 6.6 17.4

Median Payback (Years) 3.9 3.9 3.6 4.1 5.4 6.3 16.8

Transformers having Well 

Defined Payback (%) 99.93 99.93 99.93 100.00 100.00 100.00 100.00

Transformers having Undefined 

Payback (%) 0.07 0.07 0.07 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 239 239 230 214 185 150 128

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 108 108 117 133 162 197 219

Payback of Average 

Transformer 3.8 3.8 3.6 4.1 5.3 6.3 16.4
8D-148

Figure 8D.6.2 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, Baseline Scenario

Figure 8D.6.3 Average Payback Period for Design Line 7 

Representative Unit, Baseline Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-149

8D.6.2 Design Line 7 Results, Low A & B Distribution Scenario

Table 8D.6.4 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.5 1.5 1.2 1.7 2.6 3.3 44.8

Transformers with No Change 

in LCC (%) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.5 98.5 98.8 98.3 97.5 96.7 55.2

Mean LCC Savings ($) 1547 1547 1704 1866 2080 2323 260

Median LCC Savings ($) 1486 1486 1677 1832 2006 2276 171

Table 8D.6.5 Summary Payback Period Results for Design Line 7 Representative Unit, 

Low A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.1 4.1 3.8 4.3 5.5 6.5 17.3

Median Payback (Years) 3.9 3.9 3.6 4.1 5.4 6.3 16.7

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,200 3,200 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 241 241 232 216 187 151 129

Mean Incremental First Cost ($) 416 416 419 549 851 1,231 3,595

Mean Operating Cost Savings 

($) 109 109 118 134 163 199 221

Payback of Average 

Transformer 3.8 3.8 3.6 4.1 5.2 6.2 16.2
8D-150

Figure 8D.6.4 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, Low A & B Distribution 

Scenario

Figure 8D.6.5 Average Payback Period for Design Line 7 

Representative Unit, Low A & B Distribution 

Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-151

8D.6.3 Design Line 7 Results, High A & B Distribution Scenario

Table 8D.6.6 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.3 1.3 1.2 1.5 2.7 3.4 48.0

Transformers with No Change 

in LCC (%) 3.0 3.0 3.0 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 95.8 95.8 95.8 98.5 97.3 96.6 52.0

Mean LCC Savings ($) 1617 1617 1617 1834 2000 2221 158

Median LCC Savings ($) 1608 1608 1608 1811 1935 2174 63

Table 8D.6.7 Summary Payback Period Results for Design Line 7 Representative Unit, 

High A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 3.8 3.8 3.8 4.2 5.6 6.7 17.9

Median Payback (Years) 3.7 3.7 3.7 4.0 5.4 6.4 17.1

Transformers having Well 

Defined Payback (%) 97 97 97 100 100 100 100

Transformers having Undefined 

Payback (%) 3 3 3 0 0 0 0

Mean Retail Cost ($) 3,214 3,214 3,214 3,466 3,814 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,764 1,730 1,839 2,362

Mean Operating Costs ($) 231 231 231 213 186 151 129

Mean Incremental First Cost ($) 410 410 410 514 827 1,212 3,575

Mean Operating Cost Savings 

($) 113 113 113 130 157 192 215

Payback of Average 

Transformer 3.6 3.6 3.6 3.9 5.3 6.3 16.7
8D-152

Figure 8D.6.6 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, High A & B Distribution 

Scenario

Figure 8D.6.7 Average Payback Period for Design Line 7 

Representative Unit, High A & B Distribution 

Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-153

8D.6.4 Design Line 7 Results, Low Loading Scenario

Table 8D.6.8 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.7 1.7 1.4 1.9 2.6 3.6 57.2

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.2 98.2 98.5 98.1 97.5 96.5 42.8

Mean LCC Savings ($) 1447 1447 1605 1749 2099 2150 -163

Median LCC Savings ($) 1386 1386 1579 1712 2027 2109 -203

Table 8D.6.9 Summary Payback Period Results for Design Line 7 Representative Unit, 

Low Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.3 4.3 3.9 4.5 5.5 6.9 19.2

Median Payback (Years) 4.1 4.1 3.8 4.3 5.3 6.6 18.5

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 217 217 208 192 156 131 122

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 104 104 112 128 164 189 198

Payback of Average 

Transformer 4.0 4.0 3.7 4.3 5.2 6.5 18.2
8D-154

Figure 8D.6.8 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, Low Loading Scenario

Figure 8D.6.9 Average Payback Period for Design Line 7 

Representative Unit, Low Loading Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-155

8D.6.5 Design Line 7 Results, High Loading Scenario

Table 8D.6.10 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

High Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.2 1.2 1.0 1.3 2.7 2.9 27.7

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.7 98.7 98.9 98.7 97.3 97.1 72.3

Mean LCC Savings ($) 1787 1787 1932 2140 2031 2723 1250

Median LCC Savings ($) 1716 1716 1883 2073 1948 2635 1017

Table 8D.6.11 Summary Payback Period Results for Design Line 7 Representative Unit, 

High Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 3.7 3.7 3.4 3.9 5.6 5.9 14.2

Median Payback (Years) 3.5 3.5 3.3 3.7 5.5 5.7 13.7

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 298 298 290 271 260 199 144

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 122 122 130 149 161 221 276

Payback of Average 

Transformer 3.4 3.4 3.2 3.7 5.3 5.6 13.0
8D-156

Figure 8D.6.10 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, High Loading Scenario

Figure 8D.6.11 Average Payback Period for Design Line 7 

Representative Unit, High Loading Scenario

-2000

-1000

0

1000

2000

3000

4000

5000

6000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-157

8D.6.6 Design Line 7 Results, Low Electricity Price Scenario

Table 8D.6.12 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.9 1.9 1.6 2.0 3.1 4.0 57.3

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.1 98.1 98.4 98.0 96.9 96.0 42.7

Mean LCC Savings ($) 1330 1330 1465 1596 1726 1922 -150

Median LCC Savings ($) 1281 1281 1448 1569 1669 1892 -224

Table 8D.6.13 Summary Payback Period Results for Design Line 7 Representative Unit, 

Low Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.6 4.6 4.2 4.8 6.3 7.3 19.2

Median Payback (Years) 4.3 4.3 4.1 4.6 6.1 7.1 18.6

Transformers having Well

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 222 222 215 200 176 143 121

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 97 97 105 119 144 177 199

Payback of Average 

Transformer 4.3 4.3 4.0 4.6 5.9 7.0 18.1
8D-158

Figure 8D.6.12 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, Low Electricity Price Scenario

Figure 8D.6.13 Average Payback Period for Design Line 7 

Representative Unit, Low Electricity Price Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-159

8D.6.7 Design Line 7 Results, High Electricity Price Scenario

Table 8D.6.14 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.2 1.2 1.0 1.3 2.1 2.9 35.2

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.7 98.7 98.9 98.7 97.9 97.2 64.8

Mean LCC Savings ($) 1766 1766 1939 2135 2431 2719 666

Median LCC Savings ($) 1694 1694 1900 2087 2339 2652 559

Table 8D.6.15 Summary Payback Period Results for Design Line 7 Representative Unit, 

High Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 3.7 3.7 3.4 3.9 5.0 5.9 15.7

Median Payback (Years) 3.5 3.5 3.3 3.7 4.8 5.7 15.2

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 259 259 250 231 198 160 137

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 121 121 131 149 183 220 244

Payback of Average 

Transformer 3.4 3.4 3.2 3.7 4.7 5.6 14.8
8D-160

Figure 8D.6.14 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, High Electricity Price Scenario

Figure 8D.6.15 Average Payback Period for Design Line 7 

Representative Unit, High Electricity Price Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

6000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-161

8D.6.8 Design Line 7 Results, No Load Growth Scenario

Table 8D.6.16 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.5 1.5 1.2 1.7 2.6 3.3 40.9

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.5 98.5 98.7 98.3 97.4 96.7 59.2

Mean LCC Savings ($) 1592 1592 1745 1916 2070 2395 440

Median LCC Savings ($) 1532 1532 1713 1874 1996 2339 322

Table 8D.6.17 Summary Payback Period Results for Design Line 7 Representative Unit, 

No Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.1 4.1 3.8 4.3 5.5 6.5 17.3

Median Payback (Years) 3.9 3.9 3.6 4.1 5.4 6.3 16.7

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 241 241 232 216 187 151 129

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 109 109 118 134 163 199 221

Payback of Average 

Transformer 3.8 3.8 3.6 4.1 5.2 6.2 16.2
8D-162

Figure 8D.6.16 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, No Load Growth Scenario

Figure 8D.6.17 Average Payback Period for Design Line 7 

Representative Unit, No Load Growth Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-163

8D.6.9 Design Line 7 Results, High Load Growth Scenario

Table 8D.6.18 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.5 1.5 1.2 1.6 2.6 3.3 36.4

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.5 98.5 98.7 98.4 97.4 96.8 63.6

Mean LCC Savings ($) 1642 1642 1793 1973 2060 2479 648

Median LCC Savings ($) 1578 1578 1759 1929 1982 2421 515

Table 8D.6.19 Summary Payback Period Results for Design Line 7 Representative Unit, 

High Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.1 4.1 3.8 4.3 5.5 6.5 17.3

Median Payback (Years) 3.9 3.9 3.6 4.1 5.4 6.3 16.7

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 241 241 232 216 187 151 129

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 109 109 118 134 163 199 221

Payback of Average 

Transformer 3.8 3.8 3.6 4.1 5.2 6.2 16.2
8D-164

Figure 8D.6.18 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, High Load Growth Scenario

Figure 8D.6.19 Average Payback Period for Design Line 7 

Representative Unit, High Load Growth Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

6000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-165

8D.6.10 Design Line 7 Results, Low Equipment Price Scenario

Table 8D.6.20 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 0.7 0.7 0.6 0.7 0.9 1.5 21.4

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 99.2 99.2 99.3 99.3 99.0 98.5 78.6

Mean LCC Savings ($) 1687 1687 1836 2086 2475 2761 1124

Median LCC Savings ($) 1632 1632 1805 2046 2406 2718 1035

Table 8D.6.21 Summary Payback Period Results for Design Line 7 Representative Unit, 

Low Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 2.8 2.8 2.6 2.8 3.0 4.2 13.3

Median Payback (Years) 2.6 2.6 2.5 2.6 2.9 4.1 12.9

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 2,843 2,843 2,845 3,040 3,204 3,422 4,853

Mean Installation Cost ($) 1,912 1,912 1,911 1,782 1,729 1,839 2,362

Mean Operating Costs ($) 239 239 231 214 186 151 129

Mean Incremental First Cost ($) 284 284 285 351 462 790 2,744

Mean Operating Cost Savings 

($) 109 109 117 135 163 197 220

Payback of Average 

Transformer 2.6 2.6 2.4 2.6 2.8 4.0 12.5
8D-166

Figure 8D.6.20 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, Low Equipment Price Scenario

Figure 8D.6.21 Average Payback Period for Design Line 7 

Representative Unit, Low Equipment Price Scenario

-2000

-1000

0

1000

2000

3000

4000

5000

6000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-167

8D.6.11 Design Line 7 Results, High Equipment Price Scenario

Table 8D.6.22 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 3.6 3.6 3.0 5.6 5.6 7.4 84.5

Transformers with No Change 

in LCC (%) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 96.5 96.5 97.0 94.4 94.4 92.7 15.5

Mean LCC Savings ($) 1309 1309 1426 1287 1561 1671 -1379

Median LCC Savings ($) 1258 1258 1404 1251 1491 1628 -1473

Table 8D.6.23 Summary Payback Period Results for Design Line 7 Representative Unit, 

High Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 6.6 6.6 6.2 8.7 8.7 9.8 24.9

Median Payback (Years) 6.2 6.2 6.0 8.4 8.5 9.5 24.0

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 4,307 4,307 4,308 4,680 5,139 5,525 8,309

Mean Installation Cost ($) 1,910 1,910 1,909 1,939 1,729 1,838 2,362

Mean Operating Costs ($) 237 237 231 215 186 151 129

Mean Incremental First Cost ($) 690 690 691 1,093 1,342 1,836 5,144

Mean Operating Cost Savings 

($) 112 112 118 134 163 198 220

Payback of Average 

Transformer 6.2 6.2 5.8 8.2 8.2 9.3 23.3
8D-168

Figure 8D.6.22 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, High Equipment Price 

Scenario

Figure 8D.6.23 Average Payback Period for Design Line 7 

Representative Unit, High Equipment Price 

Scenario

-4000

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-169

8D.6.12 Design Line 7 Results, Low Electricity Price Trend Scenario

Table 8D.6.24 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.5 1.5 1.2 1.7 2.6 3.3 48.1

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.5 98.5 98.7 98.3 97.5 96.7 51.9

Mean LCC Savings ($) 1500 1500 1650 1806 2006 2233 160

Median LCC Savings ($) 1439 1439 1619 1767 1927 2183 61

Table 8D.6.25 Summary Payback Period Results for Design Line 7 Representative Unit, 

Low Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.0 4.0 3.7 4.2 5.4 6.4 17.0

Median Payback (Years) 3.8 3.8 3.6 4.0 5.3 6.2 16.5

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 244 244 235 218 189 153 130

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 111 111 120 136 166 202 225

Payback of Average 

Transformer 3.8 3.8 3.5 4.0 5.1 6.1 16.0
8D-170

Figure 8D.6.24 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, Low Electricity Price Trend 

Scenario

Figure 8D.6.25 Average Payback Period for Design Line 7 

Representative Unit, Low Electricity Price Trend 

Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-171

8D.6.13 Design Line 7 Results, High Electricity Price Trend Scenario

Table 8D.6.26 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.5 1.5 1.2 1.7 2.5 3.3 42.0

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.5 98.5 98.7 98.3 97.5 96.8 58.0

Mean LCC Savings ($) 1609 1609 1768 1941 2170 2432 381

Median LCC Savings ($) 1541 1541 1736 1898 2088 2376 284

Table 8D.6.27 Summary Payback Period Results for Design Line 7 Representative Unit, 

High Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.1 4.1 3.8 4.3 5.6 6.6 17.3

Median Payback (Years) 3.9 3.9 3.7 4.1 5.4 6.3 16.8

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,459 3,813 4,089 5,929

Mean Installation Cost ($) 1,912 1,912 1,912 1,786 1,734 1,839 2,362

Mean Operating Costs ($) 240 240 232 215 186 151 128

Mean Incremental First Cost ($) 416 416 419 548 851 1,231 3,594

Mean Operating Cost Savings 

($) 109 109 117 134 163 198 221

Payback of Average 

Transformer 3.8 3.8 3.6 4.1 5.2 6.2 16.3
8D-172

Figure 8D.6.26 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, High Electricity Price Trend 

Scenario

Figure 8D.6.27 Average Payback Period for Design Line 7 

Representative Unit, High Electricity Price Trend 

Scenario

-3000

-2000

-1000

0

1000

2000

3000

4000

5000

6000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-173

8D.6.14 Design Line 7 Results, Materials Exclusion Scenario

Table 8D.6.28 Summary Life-Cycle Cost Results for Design Line 7 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 98.23 98.47 98.60 98.80 98.93 99.17 99.44

Transformers with Net LCC 

Cost (%) 1.5 1.5 1.2 3.1 13.0 0.0 0.0

Transformers with No Change 

in LCC (%) 0.1 0.1 0.1 0.0 0.0 0.0 0.0

Transformers with Net LCC 

Benefit (%) 98.5 98.5 98.7 96.9 87.0 0.0 0.0

Mean LCC Savings ($) 1548 1548 1702 1617 1092 NA NA

Median LCC Savings ($) 1487 1487 1676 1584 1035 NA NA

Table 8D.6.29 Summary Payback Period Results for Design Line 7 Representative Unit, 

Materials Exclusion Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 4.1 4.1 3.8 6.2 11.6 NA NA

Median Payback (Years) 3.9 3.9 3.6 6.0 11.2 NA NA

Transformers having Well 

Defined Payback (%) 100 100 100 100 100 0 0

Transformers having Undefined 

Payback (%) 0 0 0 0 0 0 0

Mean Retail Cost ($) 3,201 3,201 3,204 3,491 4,374 NA NA

Mean Installation Cost ($) 1,912 1,912 1,912 1,996 2,107 NA NA

Mean Operating Costs ($) 241 241 232 215 187 NA NA

Mean Incremental First Cost ($) 416 416 419 790 1,784 NA NA

Mean Operating Cost Savings 

($) 109 109 118 134 163 NA NA

Payback of Average 

Transformer 3.8 3.8 3.6 5.9 11.0 NA NA
8D-174

Figure 8D.6.28 Average Life-Cycle Cost Savings for Design Line 7 

Representative Unit, Materials Exclusion Scenario

Figure 8D.6.29 Average Payback Period for Design Line 7 

Representative Unit, Materials Exclusion Scenario

-1000

-500

0

500

1000

1500

2000

2500

3000

3500

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 7 Average LCC Savings

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

median

average

0

2

4

6

8

10

12

14

16

18

20

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 7 Average Payback Period

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

median

average
8D-175

8D.7 DESIGN LINE 12 RESULTS

Figure 8D.7.1 Average LCC Savings ($) by Scenario for Design 

Line 12

Table 8D.7.1 LCC Savings ($), Summary Table for Design Line 12

Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Baseline 4537 6790 6048 8594 7858 828 -14496

Low A & B Distribution 4565 6825 6048 8627 7891 857 -14464

High A & B Distribution 3579 5565 5903 7401 6657 -208 -15671

Low Loading 3895 4292 3976 6889 3237 -6954 -24000

High Loading 6419 14013 12064 13535 21174 23212 12832

Low Electricity Price 3765 5433 3720 5485 4396 -2785 -18203

High Electricity Price 5309 8148 8375 11703 11321 4441 -10790

Medium Load Growth 4690 7380 6541 8996 8946 2657 -12263

High Load Growth 4866 8052 7105 9455 10185 4743 -9716

Low Equipment Price 4744 6668 11244 13494 14170 9650 -1603

High Equipment Price 2861 2575 -2639 -909 -3374 -13916 -36585

Low Electricity Price Trend 4367 6471 5535 7926 7072 -39 -15410

High Electricity Price Trend 4751 7192 6695 9439 8851 1919 -13349

Materials Exclusion 3232 1058 -3669 -16684 NA NA NA

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

99.21% 99.30% 99.39% 99.46% 99.53% 99.59% 99.63%

Average LCC Savings ($)

Transformer Efficiency (%)

Baseline

Low A & B Distribution

High A & B Distribution

Low Loading

High Loading 

Low Electricity Price

High Electricity Price

Medium Load Growth

High Load Growth

Low Equipment Price

High Equipment Price

Low Electricity Price Trend

High Electricity Price Trend

Materials Exclusion
8D-176

8D.7.1 Design Line 12 Results, Baseline Scenario

Table 8D.7.2 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Baseline Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 7.08 7.56 23.38 17.13 24.86 50.42 85.39

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 92.91 92.44 76.62 82.87 75.14 49.58 14.61

Mean LCC Savings ($) 4537 6790 6048 8594 7858 828 -14496

Median LCC Savings ($) 4301 6414 5402 8074 7250 -163 -15669

Table 8D.7.3 Summary Payback Period Results for Design Line 12 Representative 

Unit, Baseline Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 7.2 9.3 13.8 12.7 14.0 18.3 26.1

Median Payback (Years) 6.0 8.5 12.7 12.3 13.3 17.4 24.7

Transformers having Well 

Defined Payback (%) 99.18 100 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.82 0.00 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 3,057 2,718 2,281 1,929 1,662 1,481 1,376

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 384 722 1,160 1,512 1,779 1,960 2,065

Payback of Average 

Transformer 6.1 8.4 12.4 11.9 13.1 17.0 24.1
8D-177

Figure 8D.7.2 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Baseline Scenario

Figure 8D.7.3 Average Payback Period for Design Line 12 

Representative Unit, Baseline Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-178

8D.7.2 Design Line 12 Results, Low A & B Distribution Scenario

Table 8D.7.4 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 6.96 7.44 23.44 17.08 24.78 50.27 85.34

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 93.03 92.56 76.56 82.92 75.22 49.73 14.66

Mean LCC Savings ($) 4565 6825 6048 8627 7891 857 -14464

Median LCC Savings ($) 4321 6439 5399 8108 7294 -115 -15615

Table 8D.7.5 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 7.1 9.2 13.8 12.6 14.0 18.3 26.1

Median Payback (Years) 6.0 8.5 12.7 12.3 13.3 17.4 24.7

Transformers having Well 

Defined Payback (%) 99.23 100 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.77 0.00 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,377 60,976 68,551 71,895 76,909 86,086 101,59

0

Mean Installation Cost ($) 7,114 7,231 7,967 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 3,057 2,719 2,283 1,929 1,662 1,481 1,376

Mean Incremental First Cost ($) 2,332 6,047 14,360 18,052 23,387 33,246 49,701

Mean Operating Cost Savings 

($) 386 724 1,160 1,514 1,781 1,962 2,066

Payback of Average 

Transformer 6.0 8.3 12.4 11.9 13.1 16.9 24.1
8D-179

Figure 8D.7.4 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Low A & B Distribution 

Scenario

Figure 8D.7.5 Average Payback Period for Design Line 12 

Representative Unit, Low A & B Distribution 

Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-180

8D.7.3 Design Line 12 Results, High A & B Distribution Scenario

Table 8D.7.6 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 15.31 16.95 21.62 21.14 29.97 55.08 85.47

Transformers with No Change 

in LCC (%) 0.04 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 84.65 83.05 78.38 78.86 70.03 44.92 14.53

Mean LCC Savings ($) 3579 5565 5903 7401 6657 -208 -15671

Median LCC Savings ($) 3131 4957 5499 6752 5630 -1795 -17426

Table 8D.7.7 Summary Payback Period Results for Design Line 12 Representative 

Unit, High A & B Distribution Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 9.5 11.8 13.4 13.2 14.7 19.4 28.1

Median Payback (Years) 6.7 9.7 12.9 12.7 14.0 18.2 26.0

Transformers having Well 

Defined Payback (%) 95.88 99.85 100 100 100 100 100

Transformers having Undefined 

Payback (%) 4.12 0.15 0.00 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,568 61,325 69,277 71,900 76,933 86,014 101,58

4

Mean Installation Cost ($) 7,086 7,280 8,140 8,317 8,639 9,307 10,270

Mean Operating Costs ($) 3,035 2,697 2,173 1,929 1,661 1,477 1,376

Mean Incremental First Cost ($) 1,991 5,942 14,754 17,554 22,909 32,658 49,192

Mean Operating Cost Savings 

($) 312 650 1,174 1,418 1,686 1,870 1,971

Payback of Average 

Transformer 6.4 9.1 12.6 12.4 13.6 17.5 25.0
8D-181

Figure 8D.7.6 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, High A & B Distribution 

Scenario

Figure 8D.7.7 Average Payback Period for Design Line 12 

Representative Unit, High A & B Distribution 

Scenario

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

50

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-182

8D.7.4 Design Line 12 Results, Low Loading Scenario

Table 8D.7.8 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 15.55 16.96 36.66 22.56 39.65 77.31 98.02

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 84.44 83.04 63.34 77.44 60.35 22.69 1.98

Mean LCC Savings ($) 3895 4292 3976 6889 3237 -6954 -24000

Median LCC Savings ($) 3833 3984 2783 6310 2641 -7656 -24648

Table 8D.7.9 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 9.6 12.3 17.3 13.6 16.4 23.3 34.6

Median Payback (Years) 6.6 10.5 14.2 13.0 15.6 22.1 32.9

Transformers having Well 

Defined Payback (%) 96.55 99.91 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 3.45 0.09 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 2,344 2,108 1,647 1,275 1,168 1,161 1,152

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 349 585 1,046 1,418 1,524 1,531 1,540

Payback of Average 

Transformer 6.7 10.3 13.7 12.7 15.3 21.7 32.3
8D-183

Figure 8D.7.8 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Low Loading Scenario

Figure 8D.7.9 Average Payback Period for Design Line 12 

Representative Unit, Low Loading Scenario

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-184

8D.7.5 Design Line 12 Results, High Loading Scenario

Table 8D.7.10 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 9.27 3.40 22.59 11.18 10.21 18.46 39.95

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 90.72 96.60 77.41 88.82 89.79 81.54 60.05

Mean LCC Savings ($) 6419 14013 12064 13535 21174 23212 12832

Median LCC Savings ($) 5129 11808 7708 12077 18243 17921 6511

Table 8D.7.11 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Loading Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 7.1 6.4 12.6 11.0 10.4 12.0 16.4

Median Payback (Years) 5.2 6.0 11.3 10.7 10.1 11.5 15.4

Transformers having Well 

Defined Payback (%) 97.49 100 99.93 100 100 100 100

Transformers having Undefined 

Payback (%) 2.51 0.00 0.07 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 5,116 4,482 4,111 3,820 3,088 2,403 2,025

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 489 1,123 1,494 1,785 2,517 3,202 3,580

Payback of Average 

Transformer 4.8 5.4 9.6 10.1 9.3 10.4 13.9
8D-185

Figure 8D.7.10 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, High Loading Scenario

Figure 8D.7.11 Average Payback Period for Design Line 12 

Representative Unit, High Loading Scenario

-40000

-20000

0

20000

40000

60000

80000

100000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-186

8D.7.6 Design Line 12 Results, Low Electricity Price Scenario

Table 8D.7.12 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 8.30 9.82 31.70 26.38 34.65 62.54 91.38

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 91.69 90.18 68.30 73.62 65.35 37.46 8.62

Mean LCC Savings ($) 3765 5433 3720 5485 4396 -2785 -18203

Median LCC Savings ($) 3572 5126 3173 5134 3978 -3562 -19205

Table 8D.7.13 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 8.0 10.3 15.4 14.2 15.6 20.3 29.0

Median Payback (Years) 6.8 9.5 14.3 13.8 14.9 19.3 27.4

Transformers having Well 

Defined Payback (%) 99.25 100 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.75 0.00 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 2,757 2,451 2,066 1,758 1,510 1,337 1,238

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 342 648 1,032 1,341 1,589 1,762 1,861

Payback of Average 

Transformer 6.8 9.3 13.9 13.5 14.7 18.9 26.7
8D-187

Figure 8D.7.12 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Low Electricity Price Scenario

Figure 8D.7.13 Average Payback Period for Design Line 12 

Representative Unit, Low Electricity Price Scenario

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

50

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-188

8D.7.7 Design Line 12 Results, High Electricity Price Scenario

Table 8D.7.14 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 6.18 6.02 18.12 11.88 17.65 40.61 77.60

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 93.81 93.98 81.88 88.12 82.35 59.39 22.40

Mean LCC Savings ($) 5309 8148 8375 11703 11321 4441 -10790

Median LCC Savings ($) 5028 7720 7580 11007 10556 3263 -12196

Table 8D.7.15 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Electricity Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 6.6 8.4 12.5 11.4 12.7 16.6 23.8

Median Payback (Years) 5.4 7.8 11.5 11.0 12.1 15.8 22.6

Transformers having Well 

Defined Payback (%) 99.14 99.98 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.86 0.02 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 3,357 2,986 2,495 2,101 1,814 1,624 1,515

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 427 797 1,288 1,683 1,969 2,159 2,269

Payback of Average 

Transformer 5.5 7.6 11.2 10.7 11.9 15.4 21.9
8D-189

Figure 8D.7.14 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, High Electricity Price Scenario

Figure 8D.7.15 Average Payback Period for Design Line 12 

Representative Unit, High Electricity Price Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-190

8D.7.8 Design Line 12 Results, Medium Load Growth Scenario

Table 8D.7.16 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Medium Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 6.25 6.98 22.03 16.41 22.98 45.86 80.07

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 93.74 93.02 77.97 83.59 77.02 54.14 19.93

Mean LCC Savings ($) 4690 7380 6541 8996 8946 2657 -12263

Median LCC Savings ($) 4407 6955 5783 8489 8205 1495 -13764

Table 8D.7.17 Summary Payback Period Results for Design Line 12 Representative 

Unit, Medium Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 7.2 9.3 13.8 12.7 14.0 18.3 26.1

Median Payback (Years) 6.0 8.5 12.7 12.3 13.3 17.4 24.7

Transformers having Well 

Defined Payback (%) 99.18 100 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.82 0.00 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 3,057 2,718 2,281 1,929 1,662 1,481 1,376

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 384 722 1,160 1,512 1,779 1,960 2,065

Payback of Average 

Transformer 6.1 8.4 12.4 11.9 13.1 17.0 24.1
8D-191

Figure 8D.7.16 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Medium Load Growth 

Scenario

Figure 8D.7.17 Average Payback Period for Design Line 12 

Representative Unit, Medium Load Growth 

Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-192

8D.7.9 Design Line 12 Results, High Load Growth Scenario

Table 8D.7.18 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 5.87 6.56 21.07 15.54 20.89 41.26 74.35

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 94.12 93.44 78.93 84.46 79.11 58.74 25.65

Mean LCC Savings ($) 4866 8052 7105 9455 10185 4743 -9716

Median LCC Savings ($) 4493 7529 6115 8920 9286 3280 -11512

Table 8D.7.19 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Load Growth Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 7.2 9.3 13.8 12.7 14.0 18.3 26.1

Median Payback (Years) 6.0 8.5 12.7 12.3 13.3 17.4 24.7

Transformers having Well 

Defined Payback (%) 99.18 100 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.82 0.00 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 3,057 2,718 2,281 1,929 1,662 1,481 1,376

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 384 722 1,160 1,512 1,779 1,960 2,065

Payback of Average 

Transformer 6.1 8.4 12.4 11.9 13.1 17.0 24.1
8D-193

Figure 8D.7.18 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, High Load Growth Scenario

Figure 8D.7.19 Average Payback Period for Design Line 12 

Representative Unit, High Load Growth Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-194

8D.7.10 Design Line 12 Results, Low Equipment Price Scenario

Table 8D.7.20 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 5.59 8.55 6.20 5.89 8.52 23.52 58.14

Transformers with No Change 

in LCC (%) 0.03 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 94.38 91.45 93.80 94.11 91.48 76.48 41.86

Mean LCC Savings ($) 4744 6668 11244 13494 14170 9650 -1603

Median LCC Savings ($) 4550 6331 10587 12970 13528 8702 -2719

Table 8D.7.21 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 5.2 9.0 9.1 9.0 10.1 13.6 19.8

Median Payback (Years) 3.9 7.8 8.8 8.7 9.7 12.8 18.7

Transformers having Well 

Defined Payback (%) 98.59 99.94 100 100 100 100 100

Transformers having Undefined 

Payback (%) 1.41 0.06 0.00 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 45,000 48,732 53,099 55,015 58,678 65,479 77,055

Mean Installation Cost ($) 7,229 7,338 8,141 8,317 8,638 9,313 10,271

Mean Operating Costs ($) 3,049 2,722 2,174 1,929 1,661 1,479 1,376

Mean Incremental First Cost ($) 1,305 5,145 10,315 12,407 16,392 23,868 36,402

Mean Operating Cost Savings 

($) 336 663 1,211 1,456 1,723 1,906 2,008

Payback of Average 

Transformer 3.9 7.8 8.5 8.5 9.5 12.5 18.1
8D-195

Figure 8D.7.20 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Low Equipment Price Scenario

Figure 8D.7.21 Average Payback Period for Design Line 12 

Representative Unit, Low Equipment Price Scenario

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-196

8D.7.11 Design Line 12 Results, High Equipment Price Scenario

Table 8D.7.22 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 15.73 30.71 67.61 56.54 64.77 86.07 98.46

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 84.27 69.29 32.39 43.46 35.23 13.93 1.54

Mean LCC Savings ($) 2861 2575 -2639 -909 -3374 -13916 -36585

Median LCC Savings ($) 2689 2299 -3354 -1370 -3900 -14765 -37672

Table 8D.7.23 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Equipment Price Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 11.7 14.9 21.5 19.0 20.3 25.7 36.8

Median Payback (Years) 10.6 14.3 20.3 18.4 19.5 24.7 35.2

Transformers having Well 

Defined Payback (%) 99.95 100 100 100 100 100 100

Transformers having Undefined 

Payback (%) 0.05 0.00 0.00 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 75,987 82,209 92,826 98,159 104,81

7

117,56

7

139,88

7

Mean Installation Cost ($) 7,219 7,225 7,829 8,316 8,634 9,288 10,269

Mean Operating Costs ($) 3,061 2,718 2,358 1,929 1,663 1,471 1,377

Mean Incremental First Cost ($) 4,136 10,364 21,585 27,405 34,381 47,784 71,086

Mean Operating Cost Savings 

($) 395 739 1,098 1,527 1,793 1,985 2,079

Payback of Average 

Transformer 10.5 14.0 19.7 18.0 19.2 24.1 34.2
8D-197

Figure 8D.7.22 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, High Equipment Price 

Scenario

Figure 8D.7.23 Average Payback Period for Design Line 12 

Representative Unit, High Equipment Price 

Scenario

-70000

-60000

-50000

-40000

-30000

-20000

-10000

0

10000

20000

30000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-198

8D.7.12 Design Line 12 Results, Low Electricity Price Trend Scenario

Table 8D.7.24 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Low Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 7.23 7.88 25.22 19.35 27.58 53.22 86.89

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 92.76 92.12 74.78 80.65 72.42 46.78 13.11

Mean LCC Savings ($) 4367 6471 5535 7926 7072 -39 -15410

Median LCC Savings ($) 4127 6094 4868 7405 6443 -1065 -16650

Table 8D.7.25 Summary Payback Period Results for Design Line 12 Representative 

Unit, Low Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 7.1 9.1 13.6 12.4 13.8 18.0 25.7

Median Payback (Years) 5.9 8.4 12.5 12.1 13.1 17.1 24.4

Transformers having Well 

Defined Payback (%) 99.18 100 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.82 0.00 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 3,107 2,763 2,318 1,961 1,689 1,505 1,399

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 391 735 1,180 1,537 1,809 1,993 2,099

Payback of Average 

Transformer 6.0 8.2 12.2 11.7 12.9 16.7 23.7
8D-199

Figure 8D.7.24 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Low Electricity Price Trend 

Scenario

Figure 8D.7.25 Average Payback Period for Design Line 12 

Representative Unit, Low Electricity Price Trend 

Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-200

8D.7.13 Design Line 12 Results, High Electricity Price Trend Scenario

Table 8D.7.26 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, High Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 6.80 7.25 21.84 15.75 23.00 47.46 82.87

Transformers with No Change 

in LCC (%) 0.01 0.00 0.00 0.00 0.00 0.00 0.00

Transformers with Net LCC 

Benefit (%) 93.19 92.75 78.16 84.25 77.00 52.54 17.13

Mean LCC Savings ($) 4751 7192 6695 9439 8851 1919 -13349

Median LCC Savings ($) 4487 6786 5967 8856 8144 920 -14564

Table 8D.7.27 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Electricity Price Trend Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 7.2 9.3 13.9 12.7 14.0 18.3 26.2

Median Payback (Years) 6.0 8.6 12.8 12.4 13.4 17.5 24.9

Transformers having Well 

Defined Payback (%) 99.18 100 99.99 100 100 100 100

Transformers having Undefined 

Payback (%) 0.82 0.00 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,380 60,978 68,566 71,895 76,909 86,085 101,59

0

Mean Installation Cost ($) 7,113 7,231 7,971 8,316 8,637 9,318 10,270

Mean Operating Costs ($) 3,048 2,711 2,274 1,924 1,657 1,476 1,372

Mean Incremental First Cost ($) 2,326 6,042 14,370 18,045 23,379 33,236 49,694

Mean Operating Cost Savings 

($) 383 720 1,157 1,507 1,774 1,954 2,058

Payback of Average 

Transformer 6.1 8.4 12.4 12.0 13.2 17.0 24.1
8D-201

Figure 8D.7.26 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, High Electricity Price Trend 

Scenario

Figure 8D.7.27 Average Payback Period for Design Line 12 

Representative Unit, High Electricity Price Trend 

Scenario

-40000

-30000

-20000

-10000

0

10000

20000

30000

40000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

5

10

15

20

25

30

35

40

45

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average
8D-202

8D.7.14 Design Line 12 Results, Materials Exclusion Scenario

Table 8D.7.28 Summary Life-Cycle Cost Results for Design Line 12 Representative 

Unit, Materials Exclusion Scenario

Efficiency Level

1 2 3 4 5 6 7

Efficiency (%) 99.21 99.30 99.39 99.46 99.53 99.59 99.63

Transformers with Net LCC 

Cost (%) 18.63 45.63 69.76 92.81 0.00 0.00 0.00

Transformers with No Change 

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

Transformers with Net LCC 

Benefit (%) 81.37 54.37 30.24 7.19 0.00 0.00 0.00

Mean LCC Savings ($) 3232 1058 -3669 -16684 NA NA NA

Median LCC Savings ($) 2951 653 -4361 -17644 NA NA NA

Table 8D.7.29 Summary Payback Period Results for Design Line 12 Representative 

Unit, High Materials Exclusion Scenario

Efficiency Level

1 2 3 4 5 6 7

Mean Payback (Years) 10.8 19.0 23.4 32.2 NA NA NA

Median Payback (Years) 8.2 15.8 21.4 30.0 NA NA NA

Transformers having Well 

Defined Payback (%) 99.47 99.90 99.99 100 0.00 0.00 0.00

Transformers having Undefined 

Payback (%) 0.53 0.10 0.01 0.00 0.00 0.00 0.00

Mean Retail Cost ($) 57,787 64,335 74,656 92,082 NA NA NA

Mean Installation Cost ($) 7,328 7,889 8,466 9,611 NA NA NA

Mean Operating Costs ($) 3,101 2,811 2,443 2,090 NA NA NA

Mean Incremental First Cost ($) 2,925 10,034 20,933 39,504 NA NA NA

Mean Operating Cost Savings 

($) 347 637 1,005 1,358 NA NA NA

Payback of Average 

Transformer 8.4 15.7 20.8 29.1 NA NA NA
8D-203

Figure 8D.7.28 Average Life-Cycle Cost Savings for Design Line 12 

Representative Unit, Materials Exclusion Scenario

Figure 8D.7.29 Average Payback Period for Design Line 12 

Representative Unit, Materials Exclusion Scenario

-40000

-35000

-30000

-25000

-20000

-15000

-10000

-5000

0

5000

10000

15000

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average LCC Savings ($)

Efficiency Level

Design Line 12 Average LCC Savings

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

median

average

0

10

20

30

40

50

60

EL 1 EL 2 EL 3 EL 4 EL 5 EL 6 EL 7

Average Payback Period (years)

Efficiency Level

Design Line 12 Average Payback Period

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

median

average