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Regulatory and Rate Matters (Tables)

6 Months Ended

Jun. 30, 2015

Regulated Operations [Abstract]

Schedule of Rate Increases for Transmission Costs

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

Effective Date		Approved Increase in Rate Base				Annual Increase in Revenue
		(in millions)
September 17, 2013		$	18.1			$	2.8
March 13, 2014		18.2				2.9
September 8, 2014		25.2				4.2
March 16, 2015		27.1				4.4

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