Exhibit 12.1
ALLIANT ENERGY CORPORATION
RATIO OF EARNINGS TO FIXED CHARGES
Six Months Ended June 30, | Years Ended Dec. 31, | |||||||||||||||||||
2010 | 2009 | 2009 | 2008 | 2007 | 2006 | 2005 (a) | ||||||||||||||
(dollars in millions) | ||||||||||||||||||||
EARNINGS: | ||||||||||||||||||||
Net income from continuing operations attributable to Alliant Energy Corporation common shareowners | $91.4 | $101.5 | $110.1 | $279.4 | $425.1 | $337.8 | $57.8 | |||||||||||||
Income tax expense (benefit) (b) | 57.7 | (4.4 | ) | (9.3 | ) | 139.6 | 256.3 | 202.8 | (53.2) | |||||||||||
Subtotal | 149.1 | 97.1 | 100.8 | 419.0 | 681.4 | 540.6 | 4.6 | |||||||||||||
Fixed charges as defined | 108.2 | 94.7 | 200.6 | 186.5 | 185.6 | 213.4 | 226.8 | |||||||||||||
Adjustment for undistributed equity earnings | (3.2 | ) | (3.4 | ) | (6.7 | ) | (6.1 | ) | (7.8 | ) | (16.6 | ) | (41.7) | |||||||
Less: | ||||||||||||||||||||
Interest capitalized | - | - | - | - | - | - | 3.4 | |||||||||||||
Preferred dividend requirements of subsidiaries (pre-tax basis) (c) | 14.8 | 9.0 | 17.3 | 27.5 | 29.5 | 29.3 | 5.7 | |||||||||||||
Total earnings as defined | $239.3 | $179.4 | $277.4 | $571.9 | $829.7 | $708.1 | $180.6 | |||||||||||||
FIXED CHARGES: | ||||||||||||||||||||
Interest expense | $80.3 | $71.4 | $154.9 | $125.8 | $116.7 | $145.7 | $175.8 | |||||||||||||
Interest capitalized | - | - | - | - | - | - | 3.4 | |||||||||||||
Estimated interest component of rent expense | 13.1 | 14.3 | 28.4 | 33.2 | 39.4 | 38.4 | 41.9 | |||||||||||||
Preferred dividend requirements of subsidiaries (pre-tax basis) (c) | 14.8 | 9.0 | 17.3 | 27.5 | 29.5 | 29.3 | 5.7 | |||||||||||||
Total fixed charges as defined | $108.2 | $94.7 | $200.6 | $186.5 | $185.6 | $213.4 | $226.8 | |||||||||||||
Ratio of Earnings to Fixed Charges (d) | 2.21 | 1.89 | 1.38 | 3.07 | 4.47 | 3.32 | 0.80 | |||||||||||||
(a) For the year ended Dec. 31, 2005, earnings as defined were inadequate to cover fixed charges as defined by $46.2 million.
(b) Includes net interest related to unrecognized tax benefits.
(c) 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.
(d) The ratio calculation in the above table relates to Alliant Energy Corporation’s continuing operations.