| Selected Balance Sheet Data |
| | | | | | | | | | | | | | | | (Millions of Dollars) | | June 30, 2026 | | Dec. 31, 2025 | | Accounts receivable, net | | | | | | Accounts receivable | | $ | 1,339 | | | $ | 1,419 | | | Less allowance for bad debts | | (84) | | | (89) | | | Accounts receivable, net | | $ | 1,255 | | | $ | 1,330 | |
| | | | | | | | | | | | | | | | (Millions of Dollars) | | June 30, 2026 | | Dec. 31, 2025 | | Inventories | | | | | | Materials and supplies | | $ | 551 | | | $ | 489 | | | Fuel | | 147 | | | 156 | | | Natural gas | | 47 | | | 116 | | | Total inventories | | $ | 745 | | | $ | 761 | |
| | | | | | | | | | | | | | | | (Millions of Dollars) | | June 30, 2026 | | Dec. 31, 2025 | | Property, plant and equipment, net | | | | | | Electric plant | | $ | 64,607 | | | $ | 61,892 | | | Natural gas plant | | 10,807 | | | 10,517 | | | Common and other property | | 3,929 | | | 3,790 | | Plant to be retired (a) | | 1,522 | | | 1,595 | | | Construction work in progress | | 9,835 | | | 8,085 | | | Total property, plant and equipment | | 90,700 | | | 85,879 | | | Less accumulated depreciation | | (21,670) | | | (20,710) | | | Nuclear fuel | | 3,734 | | | 3,678 | | | Less accumulated amortization | | (3,267) | | | (3,208) | | | Property, plant and equipment, net | | $ | 69,497 | | | $ | 65,639 | |
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