| Assets | — | — |
| Non-current assets | 4,799.25a | 4,741.92a |
| Electric utility plant and equipment | 3,031.49a | 3,034.21a |
| Hydroelectric power production facilities | 269.02a | 273.97a |
| Thermal power production facilities | 203.93a | 224.63a |
| Nuclear power production facilities | 758.88a | 769.3a |
| Internal combustion engine power production facilities | 25.66a | 21.71a |
| Renewable power production facilities | 0a | 21.41a |
| Renewable power production and related facilities | 21.08a | 0a |
| Transmission facilities | 682.79a | 678.86a |
| Transformation facilities | 243.59a | 239.68a |
| Distribution facilities | 669.54a | 663.46a |
| General facilities | 147.07a | 131.16a |
| Other electric utility plant and equipment | 9.92a | 10.04a |
| Other non-current assets | 411.52a | 418.17a |
| Construction in progress | 456.89a | 399.52a |
| Construction and retirement in progress | 291.51a | 248.18a |
| Special account related to nuclear power decommissioning | 30.54a | 35.04a |
| Special account related to reprocessing of spent nuclear fuel | 134.85a | 116.3a |
| Nuclear fuel | 233.96a | 224.37a |
| Loaded nuclear fuel | 45.28a | 50.12a |
| Nuclear fuel in processing | 188.68a | 174.25a |
| Investments and other assets | 665.39a | 665.65a |
| Long-term investments | 259.44a | 263.96a |
| Retirement benefit asset | 19.99a | 12.54a |
| Deferred tax assets | 148.19a | 172.34a |
| Other | 238.9a | 218.25a |
| Allowance for doubtful accounts | -1.13a | -1.44a |
| Current assets | 927.99a | 861.76a |
| Cash and deposits | 392.76a | 295.45a |
| Notes and accounts receivable - trade, and contract assets | 182.42a | 196.44a |
| Inventories | 130.02a | 159.42a |
| Other | 225.34a | 214.03a |
| Allowance for doubtful accounts | -2.55a | -3.58a |
| Total assets | 5,727.24a | 5,603.68a |
| Liabilities | — | — |
| Non-current liabilities | 3,684.91a | 3,845.92a |
| Bonds payable | 1,405a | 1,485a |
| Long-term borrowings | 1,819.2a | 1,908.85a |
| Retirement benefit liability | 60.15a | 80.76a |
| Asset retirement obligations | 300a | 297.37a |
| Deferred tax liabilities | 16.68a | 16.44a |
| Other | 83.88a | 57.5a |
| Current liabilities | 1,119.05a | 1,138.01a |
| Current portion of non-current liabilities | 426.27a | 443.51a |
| Short-term borrowings | 123.41a | 124.53a |
| Commercial papers | 0a | 40a |
| Notes and accounts payable - trade | 127.85a | 141.66a |
| Accrued taxes | 63.5a | 21.41a |
| Provision for the levies related to Antimonopoly act | 0a | 2.76a |
| Other | 378.02a | 364.14a |
| Reserves under special laws | 2.23a | 2.52a |
| Reserve for water shortage | 2.23a | 2.52a |
| Total liabilities | 4,806.2a | 4,986.45a |
| Net assets | — | — |
| Shareholders' equity | 827.1a | 565.39a |
| Share capital | 237.3a | 237.3a |
| Capital surplus | 193.52a | 120.01a |
| Retained earnings | 397.8a | 209.73a |
| Treasury shares | -1.53a | -1.65a |
| Accumulated other comprehensive income | 63.43a | 16.67a |
| Valuation difference on available-for-sale securities | 10.05a | 5.83a |
| Deferred gains or losses on hedges | 24.78a | 11.15a |
| Foreign currency translation adjustment | 13.33a | 6.46a |
| Remeasurements of defined benefit plans | 15.27a | -6.77a |
| Non-controlling interests | 30.51a | 35.17a |
| Total net assets | 921.04a | 617.23a |
| Total liabilities and net assets | 5,727.24a | 5,603.68a |