INDEPENDENT AUDITOR'S CONSENT

We consent to the  incorporation  by reference in  Registration  Statement  Nos.
33-39208 and 33-58372 on Form S-8 of our report dated June 23, 1999 appearing in
this  Annual  Report on Form 11-K of The  Savings  Plan for Union  Employees  of
Arizona  Public  Service  Company and The Savings Plan for  Employees of Arizona
Public Service Company for the year ended December 31, 1998.


DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP
Phoenix, Arizona
June 25, 1999






                                  EXHIBIT 23.1