Exhibit 32

                               AVISTA CORPORATION

                       CERTIFICATION OF CORPORATE OFFICERS

  (Furnished Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section
                     906 of the Sarbanes-Oxley Act of 2002)

         Each of the undersigned, Gary G. Ely, Chairman of the Board, President
and Chief Executive Officer of Avista Corporation (the "Company"), and Malyn K.
Malquist, Senior Vice President, Chief Financial Officer and Treasurer of the
Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Company's
Quarterly Report on Form 10-Q for the quarter ended March 31, 2004 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
the Company.

May 7, 2004

                                                    /s/ Gary G. Ely
                                          -------------------------------------
                                                      Gary G. Ely
                                          Chairman of the Board, President and
                                               Chief Executive Officer

                                               /s/ Malyn K. Malquist
                                          -------------------------------------
                                                   Malyn K. Malquist
                                              Senior Vice President, Chief
                                             Financial Officer and Treasurer