| Assets | — | — | — |
| Non-current assets | — | — | — |
| Property, plant and equipment | 1,708.86a | 1,762.23a | 1,837.77a |
| Capital work-in-progress | 332.69a | 180.82a | 137.41a |
| Intangible assets | 14.34a | 15.38a | 16.6a |
| Intangible assets under development | 3.16a | 1.16a | 0.31a |
| Investments in joint ventures accounted for using the equity method | 18.83a | 20.39a | 17.15a |
| Financial assets | — | — | — |
| Investments | 12.34a | 15.16a | 17.74a |
| Trade receivables | 0.44a | 2.94a | 7.33a |
| Loans | 5.83a | 5.71a | 4.46a |
| Other non-current financial assets | 97.89a | 82.1a | 64.82a |
| Deferred tax assets (net) | 0.89a | 0.62a | 0.55a |
| Other non-current assets | 72.05a | 60.24a | 62.29a |
| Current assets | — | — | — |
| Inventories | 18.03a | 14.06a | 13.4a |
| Financial assets | — | — | — |
| Investments | 0a | 6.08a | 0a |
| Trade receivables | 79.65a | 115.4a | 148.84a |
| Cash and cash equivalents | 37.97a | 34.64a | 51.92a |
| Bank balances other than cash and cash equivalents | 62.8a | 40.31a | 21.92a |
| Loans | 1.34a | 1.32a | 1.07a |
| Other current financial assets | 91.44a | 46.65a | 11.81a |
| Other current assets | 3.77a | 5.68a | 2.36a |
| Assets classified as held for sale | 0a | 2.61a | 2.61a |
| Regulatory deferral account balances | 98.77a | 95.42a | 102.34a |
| Total assets | 2,661.07a | 2,508.91a | 2,522.73a |
| Equity and liabilities | — | — | — |
| Equity | — | — | — |
| Equity share capital | 93.01a | 93.01a | 69.75a |
| Other equity | 833.62a | 778.45a | 760.51a |
| Liabilities | — | — | — |
| Non-current liabilities | — | — | — |
| Financial liabilities | — | — | — |
| Borrowings | 1,098.58a | 1,050.67a | 1,138.91a |
| Lease liabilities | 0.52a | 0.63a | 0.62a |
| Other non-current financial liabilities | 35.64a | 35.67a | 35.65a |
| Provisions | 7.27a | 6.44a | 5.78a |
| Deferred tax liabilities (net) | 107.05a | 102.99a | 107.22a |
| Other non-current liabilities | 82.93a | 87.55a | 94.58a |
| Current liabilities | — | — | — |
| Financial liabilities | — | — | — |
| Borrowings | 211.07a | 183.82a | 146.26a |
| Lease liabilities | 0.13a | 0.05a | 0.04a |
| Trade payables | — | — | — |
| Total outstanding dues of micro enterprises and small enterprises | 0.88a | 0.75a | 0.49a |
| Total outstanding dues of creditors other than micro enterprises and small enterprises | 5.33a | 2.96a | 2.78a |
| Other current financial liabilities | 134.54a | 116.11a | 107.12a |
| Other current liabilities | 42.53a | 41.44a | 42.32a |
| Provisions | 6.31a | 8.27a | 10.16a |
| Current tax liabilities (net) | 1.66a | 0.12a | 0.53a |
| Total equity and liabilities | 2,661.07a | 2,508.91a | 2,522.73a |