Rate Matters (Tables)

9 Months Ended

Sep. 30, 2015

Public Utilities, General Disclosures [Abstract]

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

The following table reflects the current positions of Staff and OCC:

(Millions of Dollars)	Staff			OCC
PSCo’s filed 2015 base rate request	$	40.5		$	40.5
ROE	(12.8		)	(13.7		)
Capital structure and cost of debt	(12.8		)	(4.8		)
Cherokee pipeline adjustment	(11.2		)	4.8
Move to 2014 HTY	(10.5		)	(16.4		)
Operating and maintenance (O&M) expenses	(3.5		)	(2.7		)
Other, net	(4.4		)	(1.9		)
Total adjustments	$	(55.2	)	$	(34.7	)
Recommended (decrease) increase	$	(14.7	)	$	5.8

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

The following table summarizes the request:

(Millions of Dollars)	2015			2016 Step		2017 Step
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

Colorado 2015 Multi-Year Gas Rate Case - PSIA Rider Answer Testimony [Table Text Block]

The Staff’s recommendation for the PSIA rider is as follows:

(Millions of Dollars)	2016			2017
PSCo’s filed incremental PSIA request	$	21.7		$	21.2
Transfer PSIA O&M to base rates	(24.1		)	(2.0		)
ROE and capital structure	(8.2		)	(3.6		)
Transfer meter replacement program from base rates to PSIA	1.7			1.7
Total	$	(8.9	)	$	17.3

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

PSCo’s rebuttal testimony, compared to its initial filed base rate and rider request are summarized as follows:

(Millions of Dollars)	2015			2016 Step		2017 Step
PSCo’s filed base rate request	$	40.5		$	7.6	$	18.1
Shift O&M expenses between PSIA and base rates	—			7.0		6.4
Rebuttal corrections and adjustments	—			—		(7.7		)
Total base rate request	$	40.5		$	14.6	$	16.8
Incremental PSIA rider revenues	(0.1		)	14.7		21.7
Total revenue impact from rebuttal	$	40.4		$	29.3	$	38.5