Rate Matters (Tables)

3 Months Ended

Mar. 31, 2015

Public Utilities, General Disclosures [Abstract]

SPS' Texas 2015 Electric Rate Case [Table Text Block]

As part of its request, SPS is seeking a waiver of the PUCT post-test year adjustment rule which would allow for inclusion of $392 million (SPS total company) additional capital investment for the period July 1, 2014 through Dec. 31, 2014.

The following table summarizes the net request:

(Millions of Dollars)	Request
Investment for capital expenditures — post-test year adjustments	$	23.7
Depreciation expense	13.9
Wholesale load reductions	12.0
Purchased power capacity costs	3.2
Other, net	6.1
Total	$	58.9

FERC Wholesale Rate Complaints [Table Text Block]

The FERC established effective dates for the refunds as April 20, 2012 (first refund period) and July 19, 2013 (second refund period). Settlement judge procedures were unsuccessful and the complaints were set for hearings. In the first quarter of 2015, Golden Spread, SPS and FERC staff filed their initial testimonies recommending the following ROEs:

	Refund Period	Production ROE		Transmission ROE (a)
Golden Spread	1	8.78	%	9.28	%
	2	8.51		9.01
SPS	1	10.25		10.39
	2	10.25		11.20
FERC Staff	1	8.97		9.47
	2	8.64		9.14

^(a)  Includes a Southwest Power Pool, Inc. (SPP) Regional Transmission Organization (RTO) membership adder up to 50 basis points.