Exhibit 11
                                 
                                 
                   UNISOURCE ENERGY CORPORATION
                 COMPUTATION OF EARNINGS PER SHARE


                                        Years Ended December 31,
                                        1998       1997       1996
                                       ------     ------     ------
                                         - Thousands of Dollars -
                                          (except per share data)
Basic Earnings Per Share:
Numerator:  Net Income                $28,032    $83,572   $120,852
Denominator:
  Average Shares of Common Stock -
    Outstanding                        32,178     32,138     32,136
                                       ------     ------    -------
Basic Earnings Per Share              $  0.87    $  2.60   $   3.76
                                       ======     ======    =======

Diluted Earnings Per Share:
Numerator:  Net Income                $28,032    $83,572   $120,852
Denominator:
  Average Shares of Common Stock -
    Outstanding                        32,178     32,138     32,136
  Effect of Dilutive Securities:
    Warrants                               79         53         81
    Options                                90         87         36
                                       ------     ------    -------
  Total Shares                         32,347     32,278     32,253
                                       ------     ------    -------
Diluted Earnings Per Share            $  0.87    $  2.59   $   3.75
                                       ======     ======    =======

      Options to purchase 460,000 shares of common stock at  $16.25
per share were outstanding at the end of the year 1998 but were not
included  in  the computation of diluted EPS because  the  options'
exercise  price was greater than the average market  price  of  the
common shares.

      4.6  million  of  the  7.6 million warrants  outstanding  are
exercisable  into  TEP common stock.  See Note  13.   However,  the
dilutive  effect  is the same as it would be if the  warrants  were
exercisable into UniSource Energy Common Stock.