| Accounts receivable, net |
| | | | | | | | | | | | | | | | (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 | |
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| Property, plant and equipment, net |
| | | | | | | | | | | | | | | | (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 | |
(a)Amounts include Sherco Units 1 & 3 and A.S. King for NSP-Minnesota; Comanche Unit 3, Craig Unit 2, Hayden Units 1 and 2 for PSCo; and Tolk Unit 1 and 2 for SPS. Amounts are presented net of accumulated depreciation. In the quarter ended June 30, 2026, NSP-Minnesota recognized reductions in depreciation expense and asset retirement obligations due to nuclear life extensions verbally approved in the Minnesota Electric Rate Case.
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