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Revenue (Tables)
 6 Months Ended
Jun. 30, 2024
Revenue from Contract with Customer [Abstract]  
Schedule of 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,
2024202320242023
Retail Electric Service
Residential$658,158 $542,315 $1,090,850 $952,039 
Non-Residential609,871 516,712 1,071,354 922,849 
Wholesale Energy Sales10,261 27,282 37,125 122,885 
Transmission Services for Others27,541 33,152 55,253 64,943 
Other Sources3,163 2,242 6,124 3,942 
Total Operating Revenues$1,308,994 $1,121,703 $2,260,706 $2,066,658 
Schedule of Accounts Receivable
The following table provides a rollforward of Pinnacle West’s allowance for doubtful accounts (dollars in thousands):
June 30, 2024December 31, 2023
Allowance for doubtful accounts, balance at beginning of period$22,433 $23,778 
Bad debt expense11,512 23,399 
Actual write-offs(18,119)(24,744)
Allowance for doubtful accounts, balance at end of period$15,826 $22,433