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Rate Matters (Tables)
 9 Months Ended
Sep. 30, 2015
Public Utilities, General Disclosures [Abstract]  
SPS' New Mexico 2015 Electric Rate Case [Table Text Block]
The major components of the requested rate increase are summarized below:
(Millions of Dollars)
 
Request
2015 base period deficiency
 
$
19.7

Capital expenditures — post-test year adjustments
 
12.3

Depreciation, higher rates reflecting changes in depreciable lives, interim retirements and net salvage
 
3.7

Transmission revenue and expense, including charges paid to SPP for construction of regionally shared transmission projects
 
2.0

ROE, reflecting an increase from 9.96 percent to 10.25 percent
 
1.6

Rider revenue adjustments - gross receipts tax
 
1.3

Other, net
 
4.8

Requested rate increase
 
$
45.4
SPS' Texas 2015 Electric Rate Case [Table Text Block]
The following table reflects the positions of Alliance of Xcel Municipalities (AXM), the Office of Public Utility Counsel (OPUC), the PUCT Staff (Staff), SPS as well as the estimated recommendation of the ALJs:
 
 
 
 
 
 
 
 
SPS Rebuttal Testimony
 
ALJs’ PFD (a)
(Millions of Dollars)
 
AXM
 
OPUC
 
Staff
 
 
SPS’ revised rate request
 
$
58.9

 
$
58.9

 
$
58.9

 
$
58.9

 
$
42.1

Investment for capital expenditures — post-test year adjustments
 
(11.3
)
 
(23.8
)
 
(23.8
)
 
—

 
(16.7
)
Lower ROE
 
(10.9
)
 
(13.5
)
 
(12.1
)
 
—

 
(6.3
)
Rate base adjustments (largely the removal of the prepaid pension asset)
 
(6.2
)
 
(6.8
)
 
—

 
—

 
—

O&M expense adjustments
 
(13.7
)
 
(11.0
)
 
(7.9
)
 
(1.6
)
 
(5.3
)
Depreciation expense
 
(13.3
)
 
—

 
—

 
—

 
(3.9
)
Property taxes
 
—

 
(1.2
)
 
(4.4
)
 
(1.8
)
 
(3.7
)
Revenue adjustments
 
(2.2
)
 
(0.2
)
 
—

 
—

 
—

Wholesale load reductions
 
(13.2
)
 
—

 
(11.1
)
 
—

 
—

Southwest Power Pool (SPP) transmission expansion plan
 
—

 
—

 
—

 
(7.3
)
 
(4.2
)
Other, net
 
(1.7
)
 
(0.6
)
 
(2.2
)
 
(1.8
)
 
(0.6
)
Total recommendation
 
$
(13.6
)
 
$
1.8

 
$
(2.6
)
 
$
46.4

 
$
1.4

Adjustment to move rate case expenses to a separate docket
 
—

 
—

 
—

 
(4.3
)
 
(0.2
)
Recommendation, excluding rate case expenses
 
$
(13.6
)
 
$
1.8

 
$
(2.6
)
 
$
42.1

 
$
1.2


(a) The ALJs’ recommendation reflects proposed adjustments to SPS’ rebuttal testimony, as of Oct. 12, 2015, which supports a $42.1 million rate increase.