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Rate Matters (Tables)
 9 Months Ended
Sep. 30, 2013
Public Utilities, General Disclosures [Abstract]  
CPUC Staff, OCC and ALJ’s recommendations in the PSCo Colorado 2013 Gas Rate Case [Table Text Block]
The following table summarizes the CPUC Staff, OCC and ALJ's recommendations:
(Millions of Dollars)
 
CPUC Staff
 
OCC
 
ALJ
PSCo deficiency based on a FTY
 
$
44.8

 
$
44.8

 
$
44.8

Move to HTY
 
(1.6
)
 
(1.6
)
 
(1.6
)
ROE and capital structure adjustments
 
(20.8
)
 
(20.0
)
 
(7.7
)
Move to a 13 month average from year end rate base
 
(5.7
)
 
(3.2
)
 
(3.3
)
Remove pension asset
 
(5.9
)
 
—

 
—

Reduce pension expense net of corrections
 
(1.6
)
 
—

 
—

Remove incentive compensation
 
(3.5
)
 
(0.2
)
 
(0.2
)
Challenge known and measurable
 
—

 
(9.0
)
 
—

Eliminate depreciation annualization
 
—

 
(1.8
)
 
—

Revenue adjustments
 
(4.1
)
 
(1.4
)
 
(1.4
)
Resulting tax impacts
 
1.5

 
4.7

 
(0.2
)
Other adjustments
 
(4.2
)
 
3.1

 
(1.2
)
Remove PSIA from base rates
 
(14.2
)
 
(14.2
)
 
—

Recommendation
 
$
(15.3
)
 
$
1.2

 
$
29.2

 
 
 
 
 
 
 
Neutralize PSIA - base rate transfer
 
14.2

 
14.2

 
(14.2
)
Incremental base revenue
 
$
(1.1
)
 
$
15.4

 
$
15.0