| Assets | — | — |
| Current assets | — | — |
| Cash and cash equivalents | 0.6a | 0.2a |
| Accounts receivable, less reserve of $2.0 and $2.2, respectively | 240.6a | 208.8a |
| Accrued unbilled revenues | 74.6a | 72.7a |
| Income taxes receivable | 0a | 18.2a |
| Fuel inventories | 148.3a | 158.5a |
| Materials and supplies, at average cost | 229.4a | 254.3a |
| Fuel clause under recoveries | 112.7a | 0a |
| Other | 88.9a | 58.8a |
| Total current assets | 895.1a | 771.5a |
| Other property and investments | — | — |
| Other | 124.2a | 114a |
| Total other property and investments | 124.2a | 114a |
| Property, plant and equipment | — | — |
| In service | 16,254.6a | 15,588.2a |
| Construction work in progress | 814.2a | 522.2a |
| Total property, plant and equipment | 17,068.8a | 16,110.4a |
| Less: accumulated depreciation | 4,982.2a | 4,809.4a |
| Net property, plant and equipment | 12,086.6a | 11,301a |
| Deferred charges and other assets | — | — |
| Regulatory assets | 568.1a | 577.6a |
| Other | 42a | 26.6a |
| Total deferred charges and other assets | 610.1a | 604.2a |
| Total assets | 13,716a | 12,790.7a |
| Liabilities and stockholders' equity | — | — |
| Current liabilities | — | — |
| Short-term debt | 469.3a | 499.2a |
| Accounts payable | 305.7a | 276.4a |
| Dividends payable | 84.7a | 83.8a |
| Customer deposits | 111.1a | 103.5a |
| Accrued taxes | 58.8a | 47.6a |
| Accrued interest | 63.8a | 57.4a |
| Accrued compensation | 53a | 46.8a |
| Long-term debt due within one year | 32.4a | 0a |
| Fuel clause over recoveries | 9.3a | 20.5a |
| Other | 41.7a | 44a |
| Total current liabilities | 1,229.8a | 1,179.2a |
| Long-term debt | 5,020.9a | 4,340.5a |
| Deferred credits and other liabilities | — | — |
| Accrued benefit obligations | 170.9a | 172.7a |
| Deferred income taxes | 1,371.1a | 1,300.8a |
| Deferred investment tax credits | 10.6a | 11.3a |
| Regulatory liabilities | 1,016.4a | 1,061.6a |
| Other | 255.4a | 213a |
| Total deferred credits and other liabilities | 2,824.4a | 2,759.4a |
| Total liabilities | 9,075.1a | 8,279.1a |
| Stockholders' equity | — | — |
| Common stockholders' equity | 1,167.9a | 1,145.1a |
| Retained earnings | 3,475.7a | 3,373.7a |
| Accumulated other comprehensive loss, net of tax | -2.7a | -7.2a |
| Total stockholders' equity | 4,640.9a | 4,511.6a |
| Total liabilities and stockholders' equity | 13,716a | 12,790.7a |