Pinnacle West Sets Date for 2012 Fourth-Quarter and Full-Year Financial Results, Webcast/Conference Call

  Pinnacle West Sets Date for 2012 Fourth-Quarter and Full-Year Financial
  Results, Webcast/Conference Call

Business Wire

PHOENIX -- February 7, 2013

Pinnacle West Capital Corp. (NYSE: PNW) announced today that it plans to
release its 2012 fourth-quarter and full-year financial results before the
U.S. financial markets open on Friday, February 22, 2013.

That same day at 12:00 noon (ET), the Company also will host a live webcast of
management’s conference call to discuss the Company’s results, as well as
recent developments. The webcast can be accessed at
pinnaclewest.com/presentations and will be available for replay on the website
for 30 days. To access the live conference call by telephone, dial (877)
407-8035 or (201) 689-8035 for international callers. A replay of the call
also will be available until 11:59 p.m. (ET), Friday, March 1, 2013, by
calling (877) 660-6853 in the U.S. and Canada or (201) 612-7415
internationally and entering conference ID number 407220.

General Information

Pinnacle West Capital, an energy holding company based in Phoenix, has
consolidated assets of about $13.5 billion, more than 6,300 megawatts of
generating capacity and about 6,700 employees in Arizona and New Mexico.
Through its principal subsidiary, Arizona Public Service, the Company provides
retail electricity service to more than 1.1 million Arizona homes and
businesses. For more information about Pinnacle West, visit the Company’s
website at pinnaclewest.com.

Contact:

Pinnacle West Capital Corp.
Media Contact:
Alan Bunnell, 602-250-3376
Analyst Contact:
Rebecca Hickman, 602-250-5668
Website: pinnaclewest.com