Exhibit 12a
UNS Energy Corporation
Computation of Ratio of Earnings to Fixed Charges
| 6 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||
| June 30, | June 30, | December 31, | December 31, | December 31, | December 31, | December 31, | ||||||||||||||||||||||
| 2013 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | ||||||||||||||||||||||
| Thousands of Dollars | ||||||||||||||||||||||||||||
| Fixed Charges: | ||||||||||||||||||||||||||||
| Interest on Long-Term Debt | $ | 35,954 | $ | 71,126 | $ | 71,909 | $ | 73,217 | $ | 65,020 | $ | 58,134 | $ | 70,227 | ||||||||||||||
Other Interest (1) | (47 | ) | 916 | 1,954 | 2,535 | 1,651 | 3,468 | 1,837 | ||||||||||||||||||||
| Interest on Capital Lease Obligations | 13,554 | 31,902 | 36,593 | 44,874 | 52,540 | 53,682 | 57,272 | |||||||||||||||||||||
| Estimated Interest Portion of Rental Expense | 311 | 656 | 691 | 926 | 240 | 345 | 188 | |||||||||||||||||||||
| Total Fixed Charges | $ | 49,772 | $ | 104,600 | $ | 111,147 | $ | 121,552 | $ | 119,451 | $ | 115,629 | $ | 129,524 | ||||||||||||||
| Net Income | $ | 45,963 | $ | 104,132 | $ | 90,919 | $ | 109,975 | $ | 112,984 | $ | 105,901 | $ | 16,955 | ||||||||||||||
| Add: | ||||||||||||||||||||||||||||
| Losses from Equity Investees | — | 7 | 7 | — | 5,570 | 1,834 | 713 | |||||||||||||||||||||
| Income Tax Expense | 11,033 | 46,442 | 55,727 | 66,951 | 76,921 | 63,232 | 18,747 | |||||||||||||||||||||
| Total Fixed Charges | 49,772 | 104,600 | 111,147 | 121,552 | 119,451 | 115,629 | 129,524 | |||||||||||||||||||||
| Total Earnings before Taxes and Fixed Charges | $ | 106,768 | $ | 255,181 | $ | 257,800 | $ | 298,478 | $ | 314,926 | $ | 286,596 | $ | 165,939 | ||||||||||||||
| Ratio of Earnings to Fixed Charges | 2.145 | 2.440 | 2.319 | 2.456 | 2.636 | 2.479 | 1.281 | |||||||||||||||||||||
(1) | Excludes recognition of Allowance for Borrowed Funds Used During Construction and Loss on Extinguishment of Debt. |