| Operating revenues | 8.46a | 8.31a | 7.9a |
| Operating expenses | — | — | — |
| Operation | — | — | — |
| Fuel | -0.78a | -0.73a | -0.93a |
| Energy purchases | -1.68a | -1.84a | -1.69a |
| Other operation and maintenance | -2.61a | -2.46a | -2.4a |
| Depreciation | -1.28a | -1.25a | -1.18a |
| Taxes, other than income | -0.37a | -0.39a | -0.33a |
| Total operating expenses | -6.72a | -6.68a | -6.53a |
| Operating income | 1.74a | 1.63a | 1.37a |
| Other income (expense) - net | 0.11a | -0.04a | 0.05a |
| Interest expense | -0.74a | -0.67a | -0.51a |
| Income from continuing operations before income taxes | 1.12a | 0.92a | 0.92a |
| Income taxes | -0.23a | -0.18a | -0.2a |
| Income from continuing operations after income taxes | 0.89a | 0.74a | 0.71a |
| Income from discontinued operations (net of income taxes) | 0a | 0a | 0.04a |
| Net income | 0.89a | 0.74a | 0.76a |