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Non-Controlling Interests (Tables) | 12 Months Ended
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Dec. 31, 2019
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, 2019
TransAlta Cogeneration L.P. | 49.99% - Canadian Power Holdings Inc.
TransAlta Renewables | 39.6% - 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 the Class B shares, the DRIP and the Offering described in Note 4(O), the Corporation’s share of ownership and equity participation in TransAlta Renewables has changed as follows:
Period | Ownership and voting rights percentage | Equity participation percentage
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 |
Jan. 1, 2019 to Mar. 31, 2019 | 60.8 |  | 60.8 |
Apr. 1, 2019 to June 30, 2019 | 60.6 |  | 60.6 |
July 1, 2019 to Sept. 30, 2019 | 60.5 |  | 60.5 |
Oct. 1, 2019 to Dec. 31, 2019 | 60.4 |  | 60.4 |
Disclosure of interests in subsidiaries |
Year ended Dec. 31 | 2019 | 2018 | 2017
Revenues | 446 |  | 462 |  | 459 |
Net earnings | 183 |  | 241 |  | 13 |
Total comprehensive income | 138 |  | 281 |  | (24) |
Amounts attributable to the non-controlling interests: |  |  |
Net earnings | 73 |  | 94 |  | 11 |
Total comprehensive income | 56 |  | 110 |  | — |
Distributions paid to non-controlling interests | 69 |  | 79 |  | 85 |
As at Dec. 31 | 2019 | 2018
Current assets | 293 |  | 250 |
Long-term assets | 3,409 |  | 3,497 |
Current liabilities | (152) |  | (159) |
Long-term liabilities | (1,237) |  | (1,192) |
Total equity | (2,313) |  | (2,396) |
Equity attributable to non-controlling interests | (941) |  | (961) |
Non-controlling interests’ share (per cent) | 39.6 | 39.1
B. TA Cogen
Year ended Dec. 31 | 2019 | 2018 | 2017
Results of operations |  |  |
Revenues | 181 |  | 185 |  | 175 |
Net earnings | 43 |  | 29 |  | 61 |
Total comprehensive income | 43 |  | 29 |  | 61 |
Amounts attributable to the non-controlling interest: |  |  |
Net earnings | 21 |  | 14 |  | 31 |
Total comprehensive income | 21 |  | 14 |  | 31 |
Distributions paid to Canadian Power Holdings Inc. | 37 |  | 86 |  | 87 |
As at Dec. 31 | 2019 | 2018
Current assets | 41 |  | 82 |
Long-term assets | 328 |  | 354 |
Current liabilities | (27) |  | (54) |
Long-term liabilities | (19) |  | (28) |
Total equity | (323) |  | (354) |
Equity attributable to Canadian Power Holdings Inc. | (160) |  | (176) |
Non-controlling interest share (per cent) | 49.99 | 49.99
Details of the Corporation’s principal operating subsidiaries at Dec. 31, 2019, 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 | Canada | 60.4 |  | Generation and sale of electricity

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