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Related Party Transactions
 3 Months Ended
Mar. 31, 2024
Related Party Transactions [Abstract]  
Related Party Transactions Related Party Transactions
PNMR, PNM, TNMP, and NMRD are considered related parties, as is PNMR Services Company, a wholly-owned subsidiary of PNMR that provides corporate services to PNMR and its subsidiaries in accordance with shared services agreements. These services are billed at cost on a monthly basis to the business units. In addition, PNM purchases renewable energy from certain NMRD-owned facilities at a fixed price per MWh of energy produced. On February 27, 2024, PNMR Development and AEP Onsite Partners sold their respective interests in NMRD and the table below reflects transactions with NMRD prior to the sale. See Note 16 for additional discussion of NMRD. The table below summarizes the nature and amount of related party transactions of PNMR, PNM, TNMP, and NMRD:
Three Months Ended
March 31,
20242023
(In thousands)
Services billings:
PNMR to PNM$35,407 $31,539 
PNMR to TNMP14,237 12,413 
PNM to TNMP81 65 
TNMP to PNMR10 35 
PNMR to NMRD66 82 
Renewable energy purchases:
PNM from NMRD1,523 2,361 
Interest billings:
PNMR to PNM14 3 
PNM to PNMR155 130 
PNMR to TNMP14 11 
Income tax sharing payments:
PNMR to PNM— — 
TNMP to PNMR— —