| Revenues | 2,845a | 3,355a | 2,976a |
| Fuel and purchased power | -939a | -1,060a | -1,263a |
| Carbon compliance | -112a | -112a | -78a |
| Gross margin | 1,794a | 2,183a | 1,635a |
| Operations, maintenance and administration | -655a | -539a | -521a |
| Depreciation and amortization | -531a | -621a | -599a |
| Asset impairment charges (reversals) | -46a | -48a | -9a |
| Taxes, other than income taxes | -36a | -29a | -33a |
| Net other operating income | -59a | -47a | -58a |
| Operating income | 585a | 1,089a | 531a |
| Equity income | 5a | 4a | 9a |
| Finance lease income | 14a | 12a | 19a |
| Interest income | 30a | 59a | 24a |
| Interest expense | -324a | -281a | -286a |
| Foreign exchange gain (loss) | 5a | -7a | 4a |
| Gain on sale of assets and other | 4a | 4a | 52a |
| Earnings before income taxes | 319a | 880a | 353a |
| Income tax expense | -80a | -84a | -192a |
| Net earnings | 239a | 796a | 161a |
| Net earnings attributable to | — | — | — |
| TransAlta shareholders | 229a | 695a | 50a |
| Non-controlling interests | 10a | 101a | 111a |
| Net earnings attributable to TransAlta shareholders | 229a | 695a | 50a |
| Preferred share dividends | 52a | 51a | 46a |
| Net earnings attributable to common shareholders | 177a | 644a | 4a |