APS 2011 Annual Report Download - page 197

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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS
ON ACCOUNTING AND FINANCIAL DISCLOSURE
None.
ITEM 9A. CONTROLS AND PROCEDURES
(a) Disclosure Controls and Procedures
The term “disclosure controls and procedures” means controls and other procedures of a
company that are designed to ensure that information required to be disclosed by a company in the
reports that it files or submits under the Securities Exchange Act of 1934 (the “Exchange Act”) (15
U.S.C. 78a et seq.) is recorded, processed, summarized and reported, within the time periods
specified in the SEC’s rules and forms. Disclosure controls and procedures include, without
limitation, controls and procedures designed to ensure that information required to be disclosed by a
company in the reports that it files or submits under the Exchange Act is accumulated and
communicated to a company’s management, including its principal executive and principal financial
officers, or persons performing similar functions, as appropriate to allow timely decisions regarding
required disclosure.
Pinnacle West's management, with the participation of Pinnacle West's Chief Executive
Officer and Chief Financial Officer, have evaluated the effectiveness of Pinnacle West's disclosure
controls and procedures as of December 31, 2011. Based on that evaluation, Pinnacle West's Chief
Executive Officer and Chief Financial Officer have concluded that, as of that date, Pinnacle West's
disclosure controls and procedures were effective.
APS’s management, with the participation of APS’s Chief Executive Officer and Chief
Financial Officer, have evaluated the effectiveness of APS’s disclosure controls and procedures as of
December 31, 2011. Based on that evaluation, APS’s Chief Executive Officer and Chief Financial
Officer have concluded that, as of that date, APS’s disclosure controls and procedures were effective.
(b) Management's Annual Reports on Internal Control Over Financial Reporting
Reference is made to “Management's Report on Internal Control Over Financial Reporting
(Pinnacle West Capital Corporation)” on page 77 of this report and “Management's Report on
Internal Control Over Financial Reporting (Arizona Public Service Company)” on page 153 of this
report.
(c) Attestation Reports of the Registered Public Accounting Firm
Reference is made to “Report of Independent Registered Public Accounting Firm” on page
78 of this report and “Report of Independent Registered Public Accounting Firm” on page 154 of this
report on the internal control over financial reporting of Pinnacle West and APS, respectively.
(d) Changes In Internal Control Over Financial Reporting
The term “internal control over financial reporting” (defined in SEC Rule 13a-15(f)) refers to
the process of a company that is designed to provide reasonable assurance regarding the reliability of