Pinnacle West & APS Announce Officer, Senior Management Changes

January 21, 2010

- Pinnacle West Capital Corp. Chairman and Chief Executive Officer Don Brandt today announced promotions at Pinnacle West and its principal subsidiary, Arizona Public Service Co. (APS).

Effective immediately, Barbara Gomez has been named Vice President of Supply Chain Management for APS, and Denise Danner has been named Vice President, Controller and Chief Accounting Officer for both APS and Pinnacle West. Gomez, who has been with the company since 1978, previously held the position of Vice President, Controller and Chief Accounting Officer for Pinnacle West. Danner, who joined APS in 2009, previously was Vice President and Controller for APS. Both Gomez and Danner will report to Jim Hatfield, Senior Vice President and Chief Financial Officer. 

Brandt said the changes are an opportunity to provide greater management depth and experience, as well as improved efficiency and integration across operating lines.

In addition, David Hansen has been named Vice President of Fossil Operations and will report to Mark Schiavoni, Senior Vice President of Fossil. Hansen, who began with the company in 1980, was previously APS's Vice President of Power Marketing and Trading.

Pat Dinkel, who began his career with the company in 1986, has been promoted to Vice President of Power Marketing and Resource Planning. Dinkel's previous position of General Manager of Strategic Planning and Resource Acquisition will now be held by Brad Albert, a 25-year veteran of the company who previously served as Director of Resource Planning. Dinkel and Albert will both report to Don Robinson, APS President and Chief Operating Officer.

Pinnacle West (NYSE: PNW) is a Phoenix-based company with consolidated assets of about $11.8 billion. Through its subsidiaries, the Company generates, sells and delivers electricity and sells energy-related products and services to retail and wholesale customers in the western United States.

Alan Bunnell, Media Contact
(602) 250-3376

Paul Reynolds, Media Contact
(602) 250-5656

Rebecca Hickman, Anaylst Contact
(602) 250-5668