Revenue (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Retail Electric Revenue
Residential	$	515,128	$	432,568	$	840,201	$	784,134
Non-Residential	381,121		395,929		684,472		728,597
Wholesale energy sales	15,927		21,991		30,595		58,443
Transmission services for others	14,766		15,157		30,693		30,406
Other sources	2,648		3,856		5,559		8,451
Total operating revenues	$	929,590	$	869,501	$	1,591,520	$	1,610,031

Schedule of Accounts Receivable

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

	June 30, 2020			December 31, 2019
Allowance for doubtful accounts, balance at beginning of period	$	8,171		$	4,069
Bad debt expense	9,197			11,819
Actual write-offs	(5,789		)	(7,717		)
Allowance for doubtful accounts, balance at end of period	$	11,579		$	8,171