| Operating revenues | — | — |
| Electricity | 2,961.36a | 3,286.15a |
| Other | 649.05a | 700.54a |
| Total operating revenues | 3,610.41a | 3,986.68a |
| Operating expenses | — | — |
| Electricity | -2,668.5a | -3,221.25a |
| Other | -598.57a | -658.34a |
| Total operating expenses | -3,267.07a | -3,879.59a |
| Operating income (loss) | 343.34a | 107.09a |
| Other inocome (expenses): | — | — |
| Interest expense | -21.58a | -19.89a |
| Share of profit (loss) of entities accounted for using equity method | 188.75a | -12.99a |
| Impairment loss | -12.62a | -14.24a |
| Loss in conjunction with the Antimonopoly Act | -0.03a | -27.56a |
| Gain on disposition of investment securities | 9.21a | 45.32a |
| Other, net | -1.21a | -9.06a |
| Total other (income) expenses, net | 162.52a | -38.41a |
| Income (loss) before reversal of reserve for fluctuation in water levels and income taxes | 505.85a | 68.68a |
| Reversal of reserve for fluctuation in water levels | -0.16a | -0.32a |
| Income before income taxes | 506.02a | 68.99a |
| Income taxes | — | — |
| Current | -72.4a | -25.7a |
| Deferred | -22.47a | -5.42a |
| Total income taxes | -94.87a | -31.11a |
| Net income | 411.15a | 37.88a |
| Net income (loss) attributable to noncontrolling interests | 8.01a | -0.35a |
| Net income attributable to owners of parent | 403.14a | 38.23a |