Attached files

file filename
EX-31.2 - CERTIFICATION OF THE SENIOR VICE PRESIDENT AND CFO FOR ALLIANT ENERGY - WISCONSIN POWER & LIGHT COlnt331201610-qex312.htm
EX-31.1 - CERTIFICATION OF THE CHAIRMAN, PRESIDENT AND CEO FOR ALLIANT ENERGY - WISCONSIN POWER & LIGHT COlnt331201610-qex311.htm
EX-12.3 - RATIO OF EARNINGS TO FIXED CHARGES FOR WPL - WISCONSIN POWER & LIGHT COlnt331201610-qex123.htm
EX-31.5 - CERTIFICATION OF THE CHAIRMAN AND CEO FOR WPL - WISCONSIN POWER & LIGHT COlnt331201610-qex315.htm
EX-12.2 - RATIO OF EARNINGS TO FIXED CHARGES FOR IPL - WISCONSIN POWER & LIGHT COlnt331201610-qex122.htm
EX-31.6 - CERTIFICATION OF THE SENIOR VICE PRESIDENT AND CFO FOR WPL - WISCONSIN POWER & LIGHT COlnt331201610-qex316.htm
10-Q - 10-Q - WISCONSIN POWER & LIGHT COlnt331201610-q.htm
EX-3.1 - ARTICLES OF AMENDMENT TO RESTATED ARTICLES OF INCORPORATION - WISCONSIN POWER & LIGHT COlnt331201610-qex31.htm
EX-31.3 - CERTIFICATION OF THE CHAIRMAN AND CEO FOR IPL - WISCONSIN POWER & LIGHT COlnt331201610-qex313.htm
EX-32.2 - WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR IPL - WISCONSIN POWER & LIGHT COlnt331201610-qex322.htm
EX-31.4 - CERTIFICATION OF THE SENIOR VICE PRESIDENT AND CFO FOR IPL - WISCONSIN POWER & LIGHT COlnt331201610-qex314.htm
EX-32.1 - WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR ALLIANT ENERGY - WISCONSIN POWER & LIGHT COlnt331201610-qex321.htm
EX-32.3 - WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR WPL - WISCONSIN POWER & LIGHT COlnt331201610-qex323.htm


Exhibit 12.1

ALLIANT ENERGY CORPORATION

RATIO OF EARNINGS TO FIXED CHARGES

 
Three Months Ended
 
 
 
 
 
 
 
March 31,
 
Years Ended December 31,
 
2016
 
2015
 
2015
2014
2013
2012
2011
 
(dollars in millions)
EARNINGS:
 
 
 
 
 
 
 
 
 
Net income from continuing operations attributable to Alliant Energy Corporation common shareowners

$97.6

 

$96.6

 

$380.7


$385.5


$364.2


$324.9


$323.1

Income taxes (a)
21.6

 
20.5

 
70.4

44.3

53.9

89.4

69.2

Subtotal
119.2

 
117.1

 
451.1

429.8

418.1

414.3

392.3

Fixed charges as defined
51.7

 
50.8

 
202.3

195.7

189.0

208.0

208.4

Adjustment for undistributed equity earnings
(6.5
)
 

 
(3.2
)
(4.0
)
(8.3
)
(7.1
)
(7.0
)
Less:
 
 
 
 
 
 
 
 
 
Interest capitalized

 
0.3

 
1.3

1.0

0.5

6.1

2.7

Preferred dividend requirements of subsidiaries (pre-tax basis) (b)
3.2

 
3.1

 
12.0

11.3

13.0

20.1

22.0

Total earnings as defined

$161.2

 

$164.5

 

$636.9


$609.2


$585.3


$589.0


$569.0

 
 
 
 
 
 
 
 
 
 
FIXED CHARGES:
 
 
 
 
 
 
 
 
 
Interest expense

$48.0

 

$46.6

 

$187.1


$180.6


$172.8


$156.7


$158.3

Interest capitalized

 
0.3

 
1.3

1.0

0.5

6.1

2.7

Estimated interest component of rent expense
0.5

 
0.8

 
1.9

2.8

2.7

25.1

25.4

Preferred dividend requirements of subsidiaries (pre-tax basis) (b)
3.2

 
3.1

 
12.0

11.3

13.0

20.1

22.0

Total fixed charges as defined

$51.7

 

$50.8

 

$202.3


$195.7


$189.0


$208.0


$208.4

 
 
 
 
 
 
 
 
 
 
Ratio of Earnings to Fixed Charges (c)
3.12

 
3.24

 
3.15

3.11

3.10

2.83

2.73


(a) Includes net interest related to unrecognized tax benefits.

(b) Preferred dividend requirements of subsidiaries (pre-tax basis) are computed by dividing the preferred dividend requirements of subsidiaries by one hundred percent minus the respective year-to-date effective income tax rate. Excludes the impact of charges related to Interstate Power and Light Company’s and Wisconsin Power and Light Company’s preferred stock redemptions in 2013.

(c) The ratio calculation in the above table relates to Alliant Energy Corporation’s continuing operations.