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Revenue (Tables)
 3 Months Ended
Mar. 31, 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 March 31,
20242023
Retail Electric Service
Residential$432,692 $409,724 
Non-Residential461,483 406,137 
Wholesale Energy Sales26,864 95,603 
Transmission Services for Others27,712 31,791 
Other Sources2,961 1,700 
Total Operating Revenues$951,712 $944,955 
Schedule of Accounts Receivable
The following table provides a rollforward of Pinnacle West’s allowance for doubtful accounts (dollars in thousands):

March 31, 2024December 31, 2023
Allowance for doubtful accounts, balance at beginning of period$22,433 $23,778 
Bad debt expense4,769 23,399 
Actual write-offs(7,978)(24,744)
Allowance for doubtful accounts, balance at end of period$19,224 $22,433