| Assets | — | — |
| Property, plant and equipment | — | — |
| Property, plant and equipment, at cost | 10,814.32a | 10,635.23a |
| Construction in progress | 464.39a | 438.68a |
| Less | — | — |
| Contributions in aid of construction | -222.23a | -219.07a |
| Accumulated depreciation | -7,717.78a | -7,605.64a |
| Total property, plant and equipment, net | 3,338.7a | 3,249.21a |
| Nuclear fuel | — | — |
| Loaded nuclear fuel | 40.04a | 40.04a |
| Nuclear fuel in processing | 158.7a | 153.21a |
| Total nuclear fuel | 198.74a | 193.25a |
| Investments and other assets | — | — |
| Long-term investments | 2,094.74a | 1,645.89a |
| Net defined benefit asset | 7.65a | 1.78a |
| Deferred tax assets | 153.73a | 183.14a |
| Other | 30.6a | 28.37a |
| Allowance for doubtful accounts | -5.41a | -13.21a |
| Total investments and other assets | 2,281.3a | 1,845.97a |
| Current assets | — | — |
| Cash and deposits | 390.81a | 361.33a |
| Notes and accounts receivable - trade and contract assets | 354a | 365.55a |
| Inventories | 270.5a | 196.44a |
| Allowance for doubtful accounts | -1.22a | -1.63a |
| Other | 275.79a | 244.98a |
| Total current assets | 1,289.87a | 1,166.67a |
| Total assets | 7,108.62a | 6,455.1a |
| Liabilities and net assets | — | — |
| Noncurrent liabilities | — | — |
| Long-term loans payable | 2,478.62a | 2,411.14a |
| Provision for loss in conjunction with discontinued operations of nuclear power plants | 4.28a | 7.96a |
| Net defined benefit liability | 125.77a | 136.88a |
| Asset retirement obligations | 294.39a | 290.19a |
| Other | 212.62a | 186.51a |
| Total noncurrent liabilities | 3,115.68a | 3,032.67a |
| Current liabilities | — | — |
| Current portion of noncurrent liabilities | 282.51a | 234.96a |
| Short-term loans payable | 319.53a | 280.28a |
| Notes and accounts payable - trade | 271.3a | 327.49a |
| Accrued taxes | 90.59a | 50.59a |
| Other | 332.43a | 365.24a |
| Total current liabilities | 1,296.36a | 1,258.56a |
| Reserve for fluctuation in water levels | 1.51a | 1.67a |
| Total liabilities | 4,413.55a | 4,292.9a |
| Net assets | — | — |
| Capital stock | 430.78a | 430.78a |
| Capital surplus | 70.52a | 70.57a |
| Retained earnings | 1,758.43a | 1,393.12a |
| Treasury shares, at cost | -2.79a | -2.73a |
| Total shareholders’ equity | 2,256.94a | 1,891.74a |
| Accumulated other comprehensive income | — | — |
| Valuation difference on available-for-sale securities | 21.33a | 15.1a |
| Deferred gains and losses on hedges | 80.51a | 32.13a |
| Foreign currency translation adjustments | 228.66a | 133.86a |
| Remeasurements of defined benefit plans | -1.98a | -12.02a |
| Total accumulated other comprehensive income | 328.51a | 169.07a |
| Share acquisition rights | 0a | 0a |
| Noncontrolling interests | 109.62a | 101.39a |
| Total net assets | 2,695.07a | 2,162.21a |
| Total liabilities and net assets | 7,108.62a | 6,455.1a |