XML 35 R24.htm IDEA: XBRL DOCUMENT v3.8.0.1
Rate Matters Rate Matters (Tables)
3 Months Ended
Mar. 31, 2018
Public Utilities, General Disclosure [Abstract]  
Texas 2017 Rate Case [Table Text Block]
The following table summarizes SPS’ rate increase request:
Revenue Request (Millions of Dollars)
 
 
Incremental revenue request
 
$
69

Transmission Cost Recovery Factor (TCRF) rider conversion to base rates (a)
 
(14
)
  Net revenue increase request
 
$
55


(a)
The roll-in of the TCRF rider revenue into base rates will not have an impact on customer bills or revenue as these costs are already being recovered through the rider. SPS can request another TCRF rider after the conclusion of this rate case to recover transmission investments subsequent to June 30, 2017.

New Mexico 2017 Electric Rate Case [Table Text Block]
The following table summarizes certain parties’ recommendations from SPS’ request:
Millions of Dollars
 
 NMPRC Staff Testimony
 
NMAG Testimony
SPS request
 
$
43

 
$
43

Reduction to request for the impact of the TCJA
 
(11
)
 
(11
)
SPS request, including the impact of the TCJA
 
32

 
32

 
 
 
 
 
ROE (9.0 percent and 9.21 percent, respectively)
 
(4
)
 
(6
)
Capital structure (52.0 percent and 53.97 percent, respectively)
 
(7
)
 
(3
)
Accelerated depreciation (Tolk plant)
 
(3
)
 
(3
)
Disallow rate case expenses
 
(2
)
 
(3
)
Regional transmission revenue (adjustment for the impact of the TCJA)
 

 
(3
)
Post test year plant (estimated numbers were updated to actual)
 
(1
)
 
(2
)
Other, net
 
(4
)
 
(5
)
Recommended rate increase
 
$
11

 
$
7