Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Retail Electric Revenue
Residential	$	681,918	$	726,231	$	1,554,473	$	1,566,432
Non-Residential	480,671		461,168		1,216,449		1,145,640
Wholesale Energy Sales	108,539		45,631		144,143		76,226
Transmission Services for Others	35,816		18,000		77,388		48,693
Other Sources	1,310		3,471		12,525		9,030
Total operating revenues	$	1,308,254	$	1,254,501	$	3,004,978	$	2,846,021

Schedule of Accounts Receivable

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

	September 30, 2021		December 31, 2020
Allowance for doubtful accounts, balance at beginning of period	$	19,782	$	8,171
Bad debt expense	17,336		20,633
Actual write-offs	(11,815)		(9,022)
Allowance for doubtful accounts, balance at end of period	$	25,303	$	19,782