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Other Income and Other Expense (Tables) | 6 Months Ended
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Jun. 30, 2026
Other Income and Expenses [Abstract] |
Schedule of Other Income and Other Expense | The following table provides detail of Pinnacle West’s consolidated other income and other expense (dollars in thousands):
|  |  |  |  |  |  |  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  |  |  |  |  |  |  | 2026 |  | 2025 |  | 2026 |  | 2025
Other income: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  | $ | 1,767 |  |  | $ | 4,260 |  |  | $ | 4,648 |  |  | $ | 10,256 |
Investment gain — net (a) |  |  |  |  |  |  |  | 6,801 |  |  | 6,504 |  |  | 8,593 |  |  | 17,488 |
Miscellaneous |  |  |  |  |  |  |  | 4,528 |  |  | 1,340 |  |  | 4,836 |  |  | 1,821 |
Total other income |  |  |  |  |  |  |  | $ | 13,096 |  |  | $ | 12,104 |  |  | $ | 18,077 |  |  | $ | 29,565 |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-operating costs |  |  |  |  |  |  |  | $ | (5,752) |  |  | $ | (3,245) |  |  | $ | (8,214) |  |  | $ | (5,474) |
Miscellaneous |  |  |  |  |  |  |  | (818) |  |  | (1,014) |  |  | (1,096) |  |  | (1,355) |
Total other expense |  |  |  |  |  |  |  | $ | (6,570) |  |  | $ | (4,259) |  |  | $ | (9,310) |  |  | $ | (6,829) |
(a)Primarily relates to El Dorado investment activities. See Note 18. The following table provides detail of APS’s other income and other expense (dollars in thousands):
|  |  |  |  |  |  |  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  |  |  |  |  |  |  | 2026 |  | 2025 |  | 2026 |  | 2025
Other income: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  | $ | 1,757 |  |  | $ | 3,674 |  |  | $ | 4,277 |  |  | $ | 9,281 |
Miscellaneous |  |  |  |  |  |  |  | 18 |  |  | — |  |  | 143 |  |  | 115 |
Total other income |  |  |  |  |  |  |  | $ | 1,775 |  |  | $ | 3,674 |  |  | $ | 4,420 |  |  | $ | 9,396 |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-operating costs |  |  |  |  |  |  |  | $ | (4,951) |  |  | $ | (2,876) |  |  | $ | (7,341) |  |  | $ | (4,868) |
Miscellaneous |  |  |  |  |  |  |  | (815) |  |  | (1,014) |  |  | (1,093) |  |  | (1,355) |
Total other expense |  |  |  |  |  |  |  | $ | (5,766) |  |  | $ | (3,890) |  |  | $ | (8,434) |  |  | $ | (6,223) |

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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