XML 78 R50.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Non-Controlling Interests (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Interests In Other Entities [Abstract] |
Share of ownership and equity participation in TransAlta Renewables | The Corporation’s subsidiaries and operations that have non-controlling interests are as follows:
Subsidiary/Operation | Non-controlling interest as at Dec. 31, 2018
TransAlta Cogeneration L.P. | 49.99% - Canadian Power Holdings Inc.
TransAlta Renewables | 39.1% - Public shareholders
Kent Hills Wind LP(1) | 17% - Natural Forces Technologies Inc.
(1) Owned by TransAlta Renewables.
Subsidiaries and operations with non-controlling interests | As a result of the conversion of Class B shares, the DRIP and the transactions described in Note 4, the Corporation’s share of ownership and equity participation in TransAlta Renewables has fluctuated since its formation as follows:
Period | Ownership and voting rights percentage | Equity participation percentage
April 29, 2014 to May 6, 2015 | 70.3 | 70.3
May 7, 2015 to Nov. 25, 2015 | 76.1 | 72.8
Nov. 26, 2015 to Jan. 5, 2016 | 66.6 | 62.0
Jan. 6, 2016 to July 31, 2017 | 64.0 | 59.8
Aug. 1, 2017 to June 21, 2018 | 64.0 | 64.0
June 22, 2018 to July 30, 2018 | 61.1 | 61.1
July 31, 2018 to Nov. 29, 2018 | 61.0 | 61.0
Nov. 30, 2018 to Dec. 31, 2018 | 60.9 | 60.9
Disclosure of interests in subsidiaries |
Year ended Dec. 31 | 2018 |  | 2017 |  | 2016 |
Revenues | 462 |  | 459 |  | 259 |
Net earnings | 241 |  | 13 |  | 1 |
Total comprehensive income | 281 |  | (24 | ) | 40 |
Amounts attributable to the non-controlling interests: |  |  |  |  |
Net earnings | 94 |  | 11 |  | 2 |
Total comprehensive income | 110 |  | — |  | 18 |
Distributions paid to non-controlling interests | 79 |  | 85 |  | 83 |
As at Dec. 31 | 2018 |  | 2017 |
Current assets | 250 |  | 145 |
Long-term assets | 3,497 |  | 3,483 |
Current liabilities | (159 | ) | (356 | )
Long-term liabilities | (1,192 | ) | (1,075 | )
Total equity | (2,396 | ) | (2,197 | )
Equity attributable to non-controlling interests | (961 | ) | (812 | )
Non-controlling interests’ share (per cent) | 39.1 |  | 36.0 |
B. TA Cogen
Year ended Dec. 31 | 2018 |  | 2017 |  | 2016 |
Results of operations |  |  |  |  |  |
Revenues | 185 |  | 175 |  | 274 |
Net earnings | 29 |  | 61 |  | 211 |
Total comprehensive income | 29 |  | 61 |  | 258 |
Amounts attributable to the non-controlling interest: |  |  |  |  |  |
Net earnings | 14 |  | 31 |  | 105 |
Total comprehensive income | 14 |  | 31 |  | 128 |
Distributions paid to Canadian Power Holdings Inc. | 86 |  | 87 |  | 68 |
As at Dec. 31 | 2018 |  | 2017 |
Current assets | 82 |  | 193 |
Long-term assets | 354 |  | 404 |
Current liabilities | (54 | ) | (73 | )
Long-term liabilities | (28 | ) | (26 | )
Total equity | (354 | ) | (498 | )
Equity attributable to Canadian Power Holdings Inc. | (176 | ) | (247 | )
Non-controlling interest share (per cent) | 49.99 |  | 49.99 |
Details of the Corporation’s principal operating subsidiaries at Dec. 31, 2018, are as follows:
Subsidiary | Country | Ownership (per cent) | Principal activity
TransAlta Generation Partnership | Canada | 100 | Generation and sale of electricity
TransAlta Cogeneration, L.P. | Canada | 50.01 | Generation and sale of electricity
TransAlta Centralia Generation, LLC | US | 100 | Generation and sale of electricity
TransAlta Energy Marketing Corp. | Canada | 100 | Energy marketing
TransAlta Energy Marketing (U.S.), Inc. | US | 100 | Energy marketing
TransAlta Energy (Australia), Pty Ltd. | Australia | 100 | Generation and sale of electricity
TransAlta Renewables Inc. | Canada | 60.9 | Generation and sale of electricity

X
- Definition The disclosure of a schedule that shows the effects of any changes in the parent's ownership interest in a subsidiary that do not result in a loss of control on the equity attributable to owners of the parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph 18 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_18&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfEffectsOfChangesInParentsOwnershipInterestInSubsidiaryThatDoNotResultInLossOfControlOnEquityAttributableToOwnersOfParentExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of interests in subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph 2 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_2_b_i&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfInterestsInSubsidiariesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure Of Noncontrolling Interests [Table Text Block] + References No definition available. + Details
Name: | tac_DisclosureOfNoncontrollingInterestsTableTextBlock
Namespace Prefix: | tac_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interests In Other Entities [Abstract] + References No definition available. + Details
Name: | tac_InterestsInOtherEntitiesAbstract
Namespace Prefix: | tac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration