Pinnacle West Recognized Twice as Sustainable Leader

  Pinnacle West Recognized Twice as Sustainable Leader

   Acclaimed by Corporate Responsibility Magazine and Target Rock Advisors

Business Wire

PHOENIX -- May 08, 2013

For the third consecutive year, Pinnacle West Capital Corp. (NYSE: PNW), the
parent company of Arizona Public Service, was listed in the prestigious
Corporate Responsibility Magazine’s annual recognition of “100 Best Corporate
Citizens.” The 2013 list ranks Pinnacle West 35^th overall, among thousands of
companies worldwide.

“To make our vision of a sustainable energy future for Arizona a reality
requires taking real action across the entire business spectrum,” said Ann
Becker, APS Vice President, Environmental & Chief Sustainability Officer. “For
example, we have reduced the CO[2] emissions of our mobile fleet by 25
percent, provided $8.3 million in annual charitable giving and, with our
vendors, recycled 9.3 million pounds of materials.”

Recognized by PR Week as one of America's top three most prestigious rankings
for public companies, Corporate Responsibility Magazine’s “100 Best Corporate
Citizens” list evaluates companies on their performance and transparency in
298 data points across seven primary segments of corporate responsibility: (i)
Climate change; (ii) Employee relations; (iii) Environmental; (iv) Financial;
(v) Governance; (vi) Human rights; and (vii) Philanthropy.

Another prominent recognition awarded to Pinnacle West was from Target Rock
Advisors. Target Rock named its utility industry sustainability leaders in the
large-capitalization, mid-cap and small-cap categories. Pinnacle West was one
of three companies awarded in the 2013 mid-cap utility category. The winners
were chosen from a field of approximately 150 publicly traded energy utilities
and related companies located in the United States, representing some 350
distinct operating subsidiaries.

The awards were grouped into market capitalization categories to acknowledge
the different challenges faced by utilities because of their size. Winners
were recognized for their performance and management of the classic pillars of
sustainability: environmental stewardship, economic performance and societal
contribution.

Pinnacle West Capital, an energy holding company based in Phoenix, has
consolidated assets of about $13.3 billion, more than 6,300 megawatts of
generating capacity and about 6,600 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