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Other Income and Other Expense | 6 Months Ended
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Jun. 30, 2026
Other Income and Expenses [Abstract] |
Other Income and Other Expense | 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 The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 720 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/720/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 610 -Publisher FASB -URI https://asc.fasb.org/610/tableOfContent + Details
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