Notes to Consolidated Financial Statements

1. Description of TransCanada's Business
2. Accounting Policies
3. Accounting Changes
4. Segmented Information
5. Plant, Property and Equipment
6. Goodwill
7. Rate-Regulated Businesses
8. Joint Venture Investments
9. Intangibles and Other Assets
10. Notes Payable
11. Deferred Amounts
12. Income Taxes
13. Long-Term Debt
14. Long-Term Debt of Joint Ventures
15. Junior Subordinated Notes
16. Non-Controlling Interests
17. Common Shares
18. Preferred Shares
19. Asset Retirement Obligations
20. Employee Future Benefits
21. Risk Management and Financial Instruments
22. Changes in Operating Working Capital
23. Acquisitions and Dispositions
24. Commitments, Contingencies and Guarantees
25. United States Accounting Principles and Reporting

Note 5: Plant, Property and Equipment

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  2011 2010
December 31 (millions of dollars) Cost Accumulated Depreciation Net Book Value Cost Accumulated Depreciation Net Book Value
Natural Gas Pipelines(1)            
Canadian Mainline            
Pipeline 8,785 4,958 3,827 8,768 4,730 4,038
Compression 3,362 1,765 1,597 3,385 1,651 1,734
Metering and other 383 175 208 381 167 214
  12,530 6,898 5,632 12,534 6,548 5,986
Under construction 28 28 14 14
  12,558 6,898 5,660 12,548 6,548 6,000
Alberta System            
Pipeline 6,701 3,062 3,639 6,528 2,917 3,611
Compression 1,778 1,109 669 1,707 1,045 662
Metering and other 931 409 522 909 378 531
  9,410 4,580 4,830 9,144 4,340 4,804
Under construction 368 368 71 71
  9,778 4,580 5,198 9,215 4,340 4,875
ANR            
Pipeline 858 47 811 858 96 762
Compression 510 72 438 507 74 433
Metering and other 576 81 495 548 74 474
  1,944 200 1,744 1,913 244 1,669
Under construction 20 20 7 7
  1,964 200 1,764 1,920 244 1,676
Joint Ventures and Others            
GTN 1,612 370 1,242 1,557 319 1,238
Great Lakes 1,581 741 840 1,540 698 842
Foothills 1,630 1,005 625 1,650 975 675
Northern Border 1,288 644 644 1,252 608 644
Other(2) 3,132 720 2,412 2,913 633 2,280
  9,243 3,480 5,763 8,912 3,233 5,679
  33,543 15,158 18,385 32,595 14,365 18,230
Oil Pipelines            
Keystone            
Pipeline 4,904 80 4,824
Pumping equipment 1,502 38 1,464
Tanks and other 548 15 533
  6,954 133 6,821
Under construction(3) 2,433 2,433 8,184 8,184
  9,387 133 9,254 8,184 8,184
Energy            
Nuclear(4) 1,712 630 1,082 1,586 536 1,050
Natural Gas – Ravenswood 1,799 220 1,579 1,710 144 1,566
Natural Gas – Other(5) 3,337 708 2,629 2,767 588 2,179
Hydro 620 90 530 599 69 530
Wind(6) 843 88 755 659 65 594
Natural Gas Storage 454 78 376 423 67 356
Other 163 94 69 160 96 64
  8,928 1,908 7,020 7,904 1,565 6,339
Under construction – Nuclear(7) 3,217 3,217 2,678 2,678
Under construction – Other(8) 308 308 728 728
  12,453 1,908 10,545 11,310 1,565 9,745
Corporate 129 51 78 125 40 85
  55,512 17,250 38,262 52,214 15,970 36,244
(1) In 2011, the Company capitalized $23 million (2010 – $35 million) relating to the equity portion of AFUDC for natural gas pipelines with a corresponding amount recorded in Interest Income and Other.
(2) Includes in service assets of Bison, Tamazunchale, Portland, Iroquois, TQM, North Baja, Guadalajara, Tuscarora and Ventures LP, and under construction amounts of $33 million (2010 – $899 million). Bison went in service in January 2011 and Guadalajara went in service in June 2011.
(3) Includes $2.4 billion at December 31, 2011 (2010 – $1.4 billion) relating to Keystone XL which remains subject to regulatory approvals.
(4) Includes assets under capital lease relating to Bruce Power.
(5) Includes facilities with long-term PPAs that are accounted for as operating leases, including Coolidge which went in service in May 2011. The cost and accumulated depreciation of these facilities were $605 million and $34 million, respectively, at December 31, 2011 (2010 – $89 million and $19 million, respectively). Revenues of $53 million were recognized in 2011 (2010 and 2009 – $15 million) through the sale of electricity under the related PPAs.
(6) Includes Montagne-Sèche and phase one of Gros-Morne effective November 2011.
(7) Nuclear assets under construction primarily includes expenditures for the refurbishment and restart of Bruce A.
(8) Other Energy assets under construction at December 31, 2011 includes amounts for the second phase of the Gros-Morne wind farm (Cartier Wind).