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Regulatory and Rate Matters (Tables)
 12 Months Ended
Dec. 31, 2024
Regulated Operations [Abstract]  
Schedule of PNM’s Revenues Recorded for the Renewable Energy Rider
The following sets forth PNM’s revenues recorded for the renewable energy rider:
Year EndedAnnual Revenues
(In millions)
2022$60.3
202356.9
202452.0
Schedule of Rate Increases for Transmission Costs
The following sets forth TNMP’s EECRF increases:
Effective DateAggregate Collection AmountPerformance Bonus
(In millions)
March 1, 2022$7.2 $2.3 
March 1, 20237.3 1.9
March 1, 20246.6 1.2
The following sets forth TNMP’s recent interim transmission cost rate increases:

Effective DateApproved Increase in Rate BaseAnnual Increase in Revenue
(In millions)
March 25, 2022$95.6 $14.2 
September 22, 202236.0 5.3 
May 12, 2023150.5 19.4 
September 6, 202321.4 4.2 
March 15, 202497.4 13.1 
September 20, 202420.6 3.9 
The following sets forth TNMP’s recent interim distribution rate increases:
Effective DateApproved Increase in Rate BaseAnnual Increase in Revenue
(In millions)
September 1, 2022$95.7 $6.8 
September 1, 2023157.0 14.5 
July 28, 2024205.9 15.6 
November 17, 202443.7 7.7