Revenue (Tables)

3 Months Ended

Mar. 31, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table provides detail of Pinnacle West’s consolidated revenues disaggregated by revenue sources (dollars in thousands):

	Three Months Ended March 31,
	2026		2025
Retail Electric Service
Residential	$	493,701	$	448,923
Non-Residential	601,733		524,857
Wholesale Energy Sales	14,976		24,824
Transmission Services for Others	32,027		25,547
Other Sources	7,160		8,129
Total Operating Revenues	$	1,149,597	$	1,032,280

Schedule of Allowance for Doubtful Accounts

The following table provides a rollforward of Pinnacle West’s allowance for doubtful accounts (dollars in thousands):

	Three Months Ended		Year Ended
	March 31, 2026		December 31, 2025
Balance at beginning of period	$	25,495	$	24,849
Bad debt expense	5,728		28,603
Actual write-offs	(6,597)		(27,957)
Balance at end of period	$	24,626	$	25,495