| Revenues | 3,677a | 4,068a |
| Other income | 99a | 214a |
| Energy purchases and fuel | -1,787a | -2,166a |
| Gross margin | 1,989a | 2,116a |
| Other raw materials and operating charges | -209a | -159a |
| Staff costs and employee benefits expense | -254a | -179a |
| Depreciation and amortization | -503a | -574a |
| Impairment | -27a | |
| Other administrative expense | -201a | -153a |
| Foreign exchange loss | -29a | -6a |
| Operating income | 766a | 1,045a |
| Gain on divestiture | 309a | |
| Losses on disposals and other transactions | -31a | -3a |
| Net finance expense | -221a | -166a |
| Income from joint ventures | 76a | 65a |
| Income before tax | 899a | 941a |
| Income tax expense | -198a | -204a |
| Net income | 701a | 737a |
| Attributable to | — | — |
| Non-controlling interests | 2a | -7a |
| Shareholders of the company | 699a | 744a |