Exhibit 99



                  UNISOURCE ENERGY CORPORATION

                  TUCSON ELECTRIC POWER COMPANY

                         ______________

                STATEMENTS OF CORPORATE OFFICERS
   (Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)


                         ______________


     Each  of  the undersigned, James S. Pignatelli, Chairman  of
the  Board,  President and Chief Executive Officer  of  UniSource
Energy  Corporation  and Tucson Electric Power  Company  (each  a
"Company"),  and Kevin P. Larson, Vice President,  Treasurer  and
Chief  Financial  Officer  of  each  Company,  hereby  certifies,
pursuant  to Section 906 of the Sarbanes-Oxley Act of 2002,  that
each  Company's  Quarterly Report on Form 10-Q  for  the  quarter
ended  June  30,  2002  fully complies with the  requirements  of
Section 13(a) of the Securities Exchange Act of 1934, as amended,
and  that  the information contained therein fairly presents,  in
all  material  respects, the financial condition and  results  of
operations of such Company.

August 9, 2002


                              /s/  James S. Pignatelli
                              ------------------------
                                   James S. Pignatelli
                              Chairman of the Board, President
                                and Chief Executive Officer
                                UniSource Energy Corporation
                                Tucson Electric Power Company


                              /s/  Kevin P. Larson
                              ------------------------
                                   Kevin P. Larson
                              Vice President, Treasurer and
                                Chief Financial Officer
                                UniSource Energy Corporation
                                Tucson Electric Power Company