| Property, plant and equipment | 66,941a | 68,508a |
| Intangible assets | 1,938a | 1,952a |
| Rights to use assets | 1,893a | 1,852a |
| Financial receivables | 289a | 254a |
| Derivatives and other assets measured at fair value through profit or loss | 310a | 278a |
| Shares, interests and other capital instruments | 94a | 102a |
| Shares accounted for using the equity method | 371a | 453a |
| Other non-current assets | 1,244a | 1,147a |
| CO2 emission allowances for own use | 69a | 20a |
| Deferred income tax assets | 3,153a | 3,774a |
| Non-current assets | 76,302a | 78,340a |
| Inventories | 2,889a | 3,773a |
| CO2 emission allowances for own use | 10,844a | 10,517a |
| Income tax receivables | 291a | 967a |
| Derivatives and other assets measured at fair value through profit or loss | 169a | 116a |
| Trade receivables and other financial receivables | 7,931a | 10,516a |
| Other current assets | 1,205a | 3,181a |
| Cash and cash equivalents | 4,363a | 6,033a |
| Current assets | 27,692a | 35,103a |
| Total assets | 103,994a | 113,443a |
| Share capital | 19,184a | 19,184a |
| Supplementary capital | 22,252a | 28,146a |
| Hedging reserve | -540a | -1,095a |
| Foreign exchange differences | -2a | -1a |
| Retained earnings | 3,577a | 640a |
| Equity attributable to shareholders of the parent company | 44,471a | 46,874a |
| Equity attributable to non-controlling interests | 1,058a | 981a |
| Total equity | 45,529a | 47,855a |
| Non-current provisions | 9,109a | 9,746a |
| Credits, loans, bonds and leases | 10,461a | 10,384a |
| Derivative instruments | 782a | 351a |
| Deferred income tax liabilities | 1,470a | 1,055a |
| Deferred income and government grants | 1,539a | 1,147a |
| Other financial liabilities | 205a | 524a |
| Other non-financial liabilities | 183a | 171a |
| Non-current liabilities | 23,749a | 23,378a |
| Current provisions | 18,475a | 23,263a |
| Credits, loans, bonds and leases | 2,731a | 4,513a |
| Derivative instruments | 509a | 1,682a |
| Trade and other payables | 8,172a | 7,609a |
| Income tax liabilities | 802a | 260a |
| Deferred income and government grants | 181a | 105a |
| Other non-financial liabilities | 3,846a | 4,778a |
| Current liabilities | 34,716a | 42,210a |
| Total liabilities | 58,465a | 65,588a |
| Total equity and liabilities | 103,994a | 113,443a |