Revenue (Tables)

9 Months Ended

Sep. 30, 2020

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,
	2020		2019		2020		2019
Retail Electric Revenue
Residential	$	726,231	$	668,467	$	1,566,432	$	1,452,601
Non-Residential	461,168		465,602		1,145,640		1,194,199
Wholesale energy sales	45,631		36,775		76,226		95,218
Transmission services for others	18,000		15,841		48,693		46,247
Other sources	3,471		4,102		9,030		12,553
Total operating revenues	$	1,254,501	$	1,190,787	$	2,846,021	$	2,800,818

Schedule of Accounts Receivable

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

	Nine Months Ended September 30, 2020		Twelve Months Ended December 31, 2019
Allowance for doubtful accounts, balance at beginning of period	$	8,171	$	4,069
Bad debt expense	17,399		11,819
Actual write-offs	(7,501)		(7,717)
Allowance for doubtful accounts, balance at end of period	$	18,069	$	8,171