Tucson Electric Power Company
Computation of Ratio of Earnings to Fixed Charges
 3 Months Ended
    
    
    12 Months Ended
    
    
    12 Months EndedMarch 31,
    
    
    March 31,
    
    
    Dec. 31,
    
    
    Dec. 31,
    
    
    Dec. 31,
    
    
    Dec. 31,
    
    
    Dec. 31,2010
    
    
    2010
    
    
    2009
    
    
    2008
    
    
    2007
    
    
    2006
    
    
    2005-Thousands of Dollars-Fixed Charges:Interest on Long-Term Debt
    
    $
    9,878
    
    
    $
    36,913
    
    
    $
    36,226
    
    
    $
    47,456
    
    
    $
    50,230
    
    
    $
    51,422
    
    
    $
    56,243Other Interest (1)
    
    
    401
    
    
    
    1,623
    
    
    
    1,571
    
    
    
    1,367
    
    
    
    4,538
    
    
    
    6,436
    
    
    
    2,597Interest on Capital Lease Obligations
    
    
    13,600
    
    
    
    50,639
    
    
    
    53,670
    
    
    
    57,252
    
    
    
    64,477
    
    
    
    72,556
    
    
    
    79,064Estimated Interest Portion of Rental Expense
    
    
    14
    
    
    
    93
    
    
    
    106
    
    
    
    130
    
    
    
    160
    
    
    
    188
    
    
    
    216Total Fixed Charges
    
    
    23,893
    
    
    
    89,268
    
    
    
    91,573
    
    
    
    106,205
    
    
    
    119,405
    
    
    
    130,602
    
    
    
    138,120Net Income
    
    $
    10,349
    
    
    $
    100,152
    
    
    $
    89,248
    
    
    $
    4,363
    
    
    $
    53,456
    
    
    $
    66,745
    
    
    $
    48,267Add:Cumulative Effect of Accounting Change Loss -
Net of Tax
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    626Net Income from Continuing Operations
    
    
    10,349
    
    
    
    100,152
    
    
    
    89,248
    
    
    
    4,363
    
    
    
    53,456
    
    
    
    66,745
    
    
    
    48,893Add (Deduct):(Income) Losses from Equity Investees (2)
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    (1,381
    )
    
    
    
    
    
    
    (320
    )
    
    
    (314
    )Income Taxes
    
    
    6,348
    
    
    
    61,789
    
    
    
    55,130
    
    
    
    10,867
    
    
    
    35,542
    
    
    
    42,478
    
    
    
    33,907Total Fixed Charges
    
    
    23,893
    
    
    
    89,268
    
    
    
    91,573
    
    
    
    106,205
    
    
    
    119,405
    
    
    
    130,602
    
    
    
    138,120Total Earnings before Taxes
and Fixed Charges
    
    $
    40,590
    
    
    $
    251,209
    
    
    $
    235,951
    
    
    $
    120,054
    
    
    $
    208,403
    
    
    $
    239,505
    
    
    $
    220,606Ratio of Earnings to Fixed Charges
    
    
    1.699
    
    
    
    2.814
    
    
    
    2.577
    
    
    
    1.130
    
    
    
    1.745
    
    
    
    1.834
    
    
    
    1.597
 (1)
    
    Excludes recognition of Allowance for Borrowed Funds Used During Construction.(2)
    
    Inncom International, Inc.(Income) Losses.