Consolidation and Nature of Operations (Tables)

3 Months Ended

Mar. 31, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Supplemental Cash Flow Information

The following table summarizes supplemental Pinnacle West cash flow information (dollars in thousands):

	Three Months Ended March 31,
	2026		2025
Cash paid (received) during the period for:
Income taxes, net of refunds/credits	$	(4)	$	(10,799)
Interest, net of amounts capitalized	118,552		91,475
Significant non-cash investing and financing activities:
Accrued capital expenditures	281,689		315,297

The following table summarizes supplemental APS cash flow information (dollars in thousands):

	Three Months Ended March 31,
	2026		2025
Cash paid (received) during the period for:
Income taxes, net of refunds/credits	$	101	$	(5,392)
Interest, net of amounts capitalized	112,181		84,110
Significant non-cash investing and financing activities:
Accrued capital expenditures	281,689		315,297