($ millions)

Filed: 2013-12-19EB-2013-0416Exhibit C1-5-2Revi

Attachment in)- 2015-2019mber 19, 20131 - Appendix A

Review of Overhead Capitalization Rates (Distribution) - 2015-2019

ew ofOverhead Capitalization Rates (Distributo

Septe

Appendix A- Page 1 of 2

Page 1 of 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51

52

53 54

Capital Expenditures Total capital expenditures Less: Minor fixed assets Less: Capitalized overhead Less: Capitalized interest Add: Capital contributions Add: Removal costs

OM&A Total OM&A Less: CCC-A&G Costs Less: Facility costs Less: CCC-Operating Costs Add: Capitalized overheads

Capitalized CCC-A&G Costs Total CCC per Model Less: ADM Less: Network Operator Less: Customer Care Less: CBR CCC-A&G Costs Add: Facility costs

Less operating-type costs in CCC-A&G Costs Inergi - CSO Inergi - ETS CSO Apps Inergi Inergi - ETS Market Ready ETS Market Ready Inergi - Settlements

Applicable CCC-A&G Costs

Portion capitalized based on labour content: Labour in OM&A Labour in capital expenditures

Labor Content- Capital Ratio

Portion capitalized based on total spending: OM&A Capital expenditures

Total Spending- Capital Ratio

Weighting: Labour content Total spending

Portion capitalized based on weighting of two methods

Capitalized CCC-A&G costs

DISTRIBUTION OVERHEAD CAPITALIZATION RATES 2015 2016 2017 2018 2019

648.9 654.7 639.4 655.1 669.1 (54.2) (58.6) (53.6) (56.2) (53.2) (85.9) (81.4) (80.2) (82.5) (85.3) (16.8) (19.6) (22.6) (21.5) (21.5) 73.8 77.8 69.0 67.2 68.6

54.5 57.0 60.4 63.3 65.8 620.4 629.9 612.4 625.5 643.5

564.3 610.2 614.0 603.9 600.0 (149.4) (148.2) (147.7) (151.2) (154.0) (22.5) (22.4) (22.9) (23.4) (24.4)

(58.7) (57.6) (57.5) (57.5) (58.4) 85.9 81.4 80.2 82.5 85.3

419.5 463.4 466.0 454.2 448.5

208.1 205.8 205.3 208.7 212.4 (18.4) (17.8) (17.6) (17.5) (17.8)

(16.3) (16.5) (16.6) (16.8) (17.1) (23.2) (22.5) (22.6) (22.3) (22.6)

(0.8) (0.8) (0.8) (0.8) (0.8) 149.4 148.2 147.7 151.2 154.0 22.5 22.4 22.9 23.4 24.4

(34.1) (34.1) (35.1) (36.1) (37.2) (7.6) (7.4) (7.2) (7.4) (7.6)

(4 1) (4.1) (4 0) (4.0) (3 9) (3.9) (4 0) (4.0) (4 1) (4.1) (3.9) (4.2) (4.4) (4.6) (4.8) (49.8) (49.6) (50.6) (52.1) (53.8)

122.2 120.9 120.1 122.6 124.7

298.3 340.6 343.3 333.5 328.3 352.0 347.8 349.0 355.7 369.4

650.3 688.4 692.4 689.2 697.7 54.1% 50.5% 50.4% 51.6% 52.9%

419.5 463.4 466.0 454.2 448.5 620.4 629.9 612.4 625. 5 643.5

1,039.9 1,093.3 1,078.4 1,079.6 1,092.0 59.7% 57.6% 56.8% 57.9% 58.9%

50.0% 50.0% 50.0% 50.0% 50.0% 50.0% 50.0% 50.0% 50.0% 50.0%

56.9% 54.1% 53.6% 54.8% 55.9%

69.5 65.4 64.4 67.1 69.7

Page 1 of 2

($ millions) 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 8484 85 86 87

88

89 90

Capitalized CCC-Operating Costs Total CCC-Operating Costs Asset Develop & Management Network Operating Customer Care

Portion capitalized (per time study): Asset Develop & Management Network Operating Customer Care

Portion to OMA (per time study): Asset Develop & Management Network Operating Customer Care

Capitalized CCC-Operating Costs Asset Develop & Management Network Operating Customer Care

Non-capitalized CCC-Operating Costs Asset Develop & Management Network Operating Customer Care

Overhead Capitalization Rate Capitalized CCC-A&G Costs Capitalized CCC-Operating Costs TOTAL COMMON CORPORATE COSTS CAPITALIZED

Overhead capitalization rate

DISTRIBUTION OVERHEAD CAPITALIZATION RATES 2015 2016 2017 2018 2019

55.5 53.5 52.7 52.2 53.1 48.5 49.0 49.2 50.0 50.7

29.7 29.0 29.1 28.9 29.4 133.7 131.5 130.9 131.1 133.2

20.8% 20.8% 20.9% 21.0% 21.1% 8.1% 8.1% 8.1% 8.1% 8.1% 2.9% 3.0% 3.0% 1.0% 1.0%

12.3% 12.4% 12.5% 12.5% 12.6% 25.6% 25.6% 25.6% 25.6% 25.6% 78.0% 77.5% 77.5% 79.0% 79.0%

11.5 11.1 11.0 11.0 11.2 3.9 4.0 4.0 4.1 4.1

0.9 0.9 0.9 0.3 0.3 16.4 16.0 15.9 15.3 15.6

6.8 6.6 6.6 6.6 6.7 12.4 12.5 12.6 12.8 13.0

23.2 22.4 22.5 22.9 23.2 42.4 41.6 41.7 42.2 42.8

69.5 65.4 64.4 67.1 69.7 16.4 16.0 15.9 15.3 15.6

85.9 81.4 80.2 82.5 85.3

14.0% 13.0% 13.0% 13.0% 13.0%