| Goodwill | 16.57a | 17.13a |
| Intangible assets | 3.71a | 3.59a |
| Right-of-use assets | 2.94a | 2.71a |
| Property, plant and equipment | 44.27a | 40.75a |
| Companies accounted for under the equity method | 7.11a | 6.65a |
| Other financial assets | 3.62a | 3.74a |
| Equity investments | 2.75a | 2.56a |
| Non-current securities | 0.87a | 1.18a |
| Financial receivables and other financial assets | 1.11a | 1.08a |
| Operating receivables and other operating assets | 4.17a | 3.85a |
| Deferred tax assets | 1.76a | 3.51a |
| Income tax assets | 0.04a | 0.03a |
| Non-current assets | 85.31a | 83.03a |
| Inventories | 1.24a | 1.94a |
| Financial receivables and other financial assets | 0.54a | 1.09a |
| Trade receivables and other operating assets | 15.2a | 19.01a |
| Income tax assets | 1.09a | 1.03a |
| Liquid funds | 7.28a | 7.41a |
| Securities and fixed-term deposits | 1.27a | 1.38a |
| Restricted liquid funds | 0.26a | 0.45a |
| Cash and cash equivalents | 5.75a | 5.59a |
| Assets held for sale | 0.7a | |
| Current assets | 26.05a | 30.47a |
| Total assets | 111.36a | 113.51a |
| Capital stock | 2.64a | 2.64a |
| Additional paid-in capital | 13.32a | 13.33a |
| Retained earnings | 4.75a | 1.49a |
| Accumulated other comprehensive income | -1.85a | -2.3a |
| Treasury shares | -1.01a | -1.04a |
| Equity attributable to shareholders of E.ON SE | 17.84a | 14.11a |
| Non-controlling interests (before reclassification) | 7.51a | 7.02a |
| Reclassification related to IAS 32 | -1.19a | -1.17a |
| Non-controlling interests | 6.33a | 5.86a |
| Equity | 24.17a | 19.97a |
| Financial liabilities | 34.1a | 30.82a |
| Operating liabilities | 7.15a | 8.32a |
| Income tax liabilities | 0.39a | 0.55a |
| Provisions for pensions and similar obligations | 5.18a | 4.99a |
| Miscellaneous provisions | 8.29a | 9.03a |
| Deferred tax liabilities | 2.1a | 2.22a |
| Non-current liabilities | 57.22a | 55.92a |
| Financial liabilities | 4.96a | 4.62a |
| Trade payables and other operating liabilities | 19.71a | 27.4a |
| Income tax liabilities | 0.62a | 0.73a |
| Miscellaneous provisions | 4.29a | 4.87a |
| Liabilities associated with assets held for sale | 0.4a | |
| Current liabilities | 29.98a | 37.61a |
| Total equity and liabilities | 111.36a | 113.51a |