EX-12 11 ex12.htm EXHIBIT 12 ex12.htm
Exhibit 12
 
SOUTHWESTERN PUBLIC SERVICE CO.
STATEMENT OF COMPUTATION OF
RATIO OF EARNINGS TO FIXED CHARGES
(Thousands of Dollars)
 
   
Three Months Ended
March 31,
    
Year Ended December 31,
  
   
2011
    
2010
    
2009
    
2008
    
2007
    
2006
  
Earnings as defined:
                                    
Pretax income from operations
   $ 17,038     $ 126,933     $ 108,245     $ 52,769     $ 55,596     $ 76,040  
Add: Fixed charges
     25,365       100,518       114,684       74,525       57,247       56,849  
Earnings as defined
   $ 42,403     $ 227,451     $ 222,929     $ 127,294     $ 112,843     $ 132,889  
Fixed charges:
                                                
Interest charges
   $ 15,798     $ 63,912     $ 71,688     $ 61,090     $ 55,261     $ 55,739  
Interest component of leases
     9,567       36,606       42,996       13,435       1,986       1,110  
Total fixed charges
   $ 25,365     $ 100,518     $ 114,684     $ 74,525     $ 57,247     $ 56,849  
Ratio of earnings to fixed charges
     1.7       2.3       1.9       1.7       2.0       2.3