XML 65 R50.htm IDEA: XBRL DOCUMENT

Regulatory and Rate Matters (Tables)

9 Months Ended

Sep. 30, 2023

Regulated Operations [Abstract]

Schedule of Rate Increases for Transmission Costs

The following sets forth TNMP’s recent interim transmission cost rate increases:


Effective Date						Approved Increase in Rate Base						Annual Increase in Revenue
						(In millions)














September 20, 2021						$	41.2					$	6.3
March 25, 2022						95.6						14.2
September 22, 2022						36.0						5.3
May 12, 2023						150.5						19.4
September 6, 2023						21.4						4.2

Schedule Of Interim Distribution Rate Increases

The following sets forth TNMP’s recent interim distribution rate increases:


Effective Date						Approved Increase in Rate Base						Annual Increase in Revenue
						(In millions)














September 1, 2021						$	104.5					$	13.5
September 1, 2022						95.7						6.8
September 1, 2023						157.0						14.5