| Selected Balance Sheet Data |
| | | | | | | | | | | | | | | | (Millions of Dollars) | | Sept. 30, 2024 | | Dec. 31, 2023 | | Accounts receivable, net | | | | | | Accounts receivable | | $ | 1,295 | | | $ | 1,443 | | | Less allowance for bad debts | | (108) | | | (128) | | | Accounts receivable, net | | $ | 1,187 | | | $ | 1,315 | |
| | | | | | | | | | | | | | | | (Millions of Dollars) | | Sept. 30, 2024 | | Dec. 31, 2023 | | Inventories | | | | | | Materials and supplies | | $ | 399 | | | $ | 377 | | | Fuel | | 149 | | | 211 | | | Natural gas | | 90 | | | 123 | | | Total inventories | | $ | 638 | | | $ | 711 | |
| | | | | | | | | | | | | | | | (Millions of Dollars) | | Sept. 30, 2024 | | Dec. 31, 2023 | | Property, plant and equipment, net | | | | | | Electric plant | | $ | 54,908 | | | $ | 52,494 | | | Natural gas plant | | 9,599 | | | 9,080 | | | Common and other property | | 3,370 | | | 3,190 | | Plant to be retired (a) | | 1,846 | | | 2,055 | | | Construction work in progress | | 4,851 | | | 2,873 | | | Total property, plant and equipment | | 74,574 | | | 69,692 | | | Less accumulated depreciation | | (19,632) | | | (18,399) | | | Nuclear fuel | | 3,452 | | | 3,337 | | | Less accumulated amortization | | (3,073) | | | (2,988) | | | Property, plant and equipment, net | | $ | 55,321 | | | $ | 51,642 | |
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