Rate Matters (Tables)

3 Months Ended

Mar. 31, 2015

Public Utilities, General Disclosures [Abstract]

Colorado 2014 Electric Rate Case [Table Text Block]

The components of the overall 2015 revenue increase are as follows:

(Millions of Dollars)	Approved Settlement
Total base rate decrease	$	(39.4	)
CACJA rider mechanism	97.0
TCA rider mechanism	15.6
Transfer from TCA rider to base rates	(19.9		)
Total revenue increase	$	53.3

Colorado 2015 Multi-Year Gas Rate Case [Table Text Block]

The following table summarizes the request:

(Millions of Dollars)	2015			2016 Step			2017 Step
Net plant and plant related expenses	$	24.4		$	12.4		$	12.0
Operating and maintenance expenses	23.9			(5.2		)	0.6
Property and payroll taxes	4.7			2.6			4.0
ROE	4.5			—			2.4
Capital structure	(1.0		)	—			0.1
Sales forecast	(17.1		)	(2.2		)	(1.0		)
Other, net	1.1			—			—
Total base rate increase	40.5			7.6			18.1
Incremental PSIA rider revenues	(0.1		)	21.7			21.2
Total revenue impact	$	40.4		$	29.3		$	39.3