| Assets | — | — |
| Non-current assets | — | — |
| Property, plant and equipment | 18,515.1a | 17,699.14a |
| Right-of-use assets | 540a | 316.93a |
| Capital work-in-progress | 9,752.5a | 4,834.75a |
| Goodwill | 89.34a | 89.34a |
| Other intangible assets | 107.52a | 109.99a |
| Equity accounted investment | 326.65a | 256.33a |
| Financial assets | — | — |
| Investments in associates | 234.88a | 244.45a |
| Investments in others | 14.35a | 0.83a |
| Other financial assets | 226.54a | 214.11a |
| Non current tax assets (net) | 265.8a | 330.68a |
| Other non current assets | 11,411.89a | 4,515.79a |
| Total non-current assets (A) | 41,484.57a | 28,612.34a |
| Current assets | — | — |
| Inventories | 1,066.44a | 850.42a |
| Financial assets | — | — |
| Trade receivables | 3,848.58a | 4,810.19a |
| Cash and cash equivalents | 1,453.71a | 9,788.16a |
| Other balances with bank | 13.36a | 10.16a |
| Other financial assets | 142.03a | 126.91a |
| Other current assets | 3,249.8a | 3,685.25a |
| Total current assets (B) | 9,773.92a | 19,271.09a |
| Asset classified as held for sale (C) | 168.95a | 168.95a |
| Total assets (A+B+C) | 51,427.44a | 48,052.38a |
| Equity and liabilities | — | — |
| Equity | — | — |
| Equity share capital | 852.84a | 852.84a |
| Other equity | 37,346.6a | 33,831.48a |
| Total equity (D) | 38,199.44a | 34,684.32a |
| Liabilities | — | — |
| Non-current liabilities | — | — |
| Financial liabilities | — | — |
| Lease liabilities | 404.15a | 191.29a |
| Provisions | 739.59a | 697.7a |
| Deferred tax liabilities (net) | 1,438.34a | 1,695.7a |
| Other non-current liabilities | 381.41a | 383.54a |
| Total non-current liabilities (E) | 2,963.49a | 2,968.23a |
| Current liabilities | — | — |
| Financial liabilities | — | — |
| Lease liabilities | 19.56a | 15.61a |
| Trade payables (A) total outstanding dues of micro and small enterprises | 657.16a | 252.85a |
| Total outstanding dues of creditors other than micro and small enterprises | 4,759.81a | 5,990.59a |
| Other financial liabilities | 2,054.28a | 716.3a |
| Provisions | 502.62a | 477.26a |
| Current tax liabilites (net) | 85.51a | 206.22a |
| Other current liabilities | 2,185.57a | 2,741a |
| Total current liabilities (F) | 10,264.51a | 10,399.83a |
| Total liabilities (G)= (E+ F) | 13,228a | 13,368.06a |
| Total equity and liabilities (D+G) | 51,427.44a | 48,052.38a |