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Investments | 12 Months Ended
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Dec. 31, 2021
Interests In Other Entities [Abstract] |
Investments | Investments The Company’s investments in joint ventures and associates that are accounted for using the equity method consist of its investments in Skookumchuck and EMG. The change in investments is as follows:
| Skookumchuck | EMG | Total
Balance, Dec. 31, 2019 | — |  | — |  | — |
Contributions | 86 |  | 16 |  | 102 |
Equity income | 1 |  | — |  | 1 |
Change in foreign exchange rates | (2) |  | (1) |  | (3) |
Balance, Dec. 31, 2020 | 85 |  | 15 |  | 100 |
Equity income | 12 |  | (3) |  | 9 |
Distributions received | (4) |  | — |  | (4) |
Balance, Dec. 31, 2021 | 93 |  | 12 |  | 105 |
A.Skookumchuck Wind Project On Nov. 25, 2020, TransAlta completed the purchase of a 49 per cent interest in SP Skookumchuck Investments, LLC from Southern Power for cash consideration of $86 million (US$66 million). Skookumchuck is a 136.8 MW wind project located in Lewis and Thurston counties near Centralia in Washington state consisting of 38 Vestas V136 wind turbines. The project has a 20-year PPA with Puget Sound Energy. B.EMG International Acquisition On Nov. 30, 2020, TransAlta acquired a 30 per cent equity interest in EMG. Included in the purchase price of US$12 million is an estimated component contingent on EMG realizing certain earnings metrics in 2020 and 2021, following the acquisition. The final contingent amount will be calculated based on actual earnings metrics achieved. EMG is an established company with over 25 years of experience in process wastewater treatment and specializes in the design and construction of high-rate anaerobic digester systems. The investment provides an opportunity for TransAlta to leverage its expertise in on-site generation to support further advancements by EMG in the waste-to-energy space and will advance the Company's Clean Electricity Growth plan in the US market . Summarized financial information on the results of operations relating to the Company’s pro-rata interests in Skookumchuck and EMG is as follows:
Year ended Dec. 31 |  | 2021 | 2020
Results of operations |  |  |
Revenues |  | 19 |  | 3 |
Expenses |  | (10) |  | (2) |
Proportionate share of net earnings |  | 9 |  | 1 |
Joint ArrangementsJoint arrangements at Dec. 31, 2021, included the following:
Joint operations | Segment | Ownership (per cent) | Description
Sheerness | Gas | 50 | Dual-fuel facility in Alberta, of which TA Cogen has a 50 per cent interest, operated by Heartland Generation Ltd., an affiliate of Energy Capital Partners
Goldfields Power | Gas | 50 | Gas-fired facility in Australia operated by TransAlta
Fort Saskatchewan | Gas | 60 | Cogeneration facility in Alberta, of which TA Cogen has a 60 per cent interest, operated by TransAlta
Fortescue River Gas Pipeline | Gas | 43 | Natural gas pipeline in Western Australia, operated by DBP Development Group
McBride Lake | Wind and Solar | 50 | Wind generation facility in Alberta operated by TransAlta
Soderglen | Wind and Solar | 50 | Wind generation facility in Alberta operated by TransAlta
Pingston | Hydro | 50 | Hydro facility in British Columbia operated by TransAlta
Joint venture | Segment | Ownership (per cent) | Description
Skookumchuck | Wind and Solar | 49 | Wind generation facility in Washington operated by Southern Power

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