Xcel Energy 2009 Annual Report Download - page 92

Report of Independent Registered Public Accounting Firm
Board of Directors and Stockholders
Xcel Energy Inc.
We have audited the internal control over financial reporting of Xcel Energy Inc. and subsidiaries (the ‘‘Company’’) as
of December 31, 2009, based on criteria established Internal Control — Integrated Framework issued by the Committee
of Sponsoring Organizations of the Treadway Commission. The Company’s management is responsible for maintaining
effective internal control over financial reporting and for its assessment of the effectiveness of internal control over
financial reporting, included in the accompanying Management Report on Internal Controls over Financial Reporting.
Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our
audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether
effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining
an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing
and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such
other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis
for our opinion.
A company’s internal control over financial reporting is a process designed by, or under the supervision of, the
company’s principal executive and principal financial officers, or persons performing similar functions, and effected by
the company’s board of directors, management, and other personnel to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with
generally accepted accounting principles. A company’s internal control over financial reporting includes those policies
and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are
recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting
principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of
management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely
detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on
the financial statements.
Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or
improper management override of controls, material misstatements due to error or fraud may not be prevented or
detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial
reporting to future periods are subject to the risk that the controls may become inadequate because of changes in
conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as
of December 31, 2009, based on the criteria established in Internal Control — Integrated Framework issued by the
Committee of Sponsoring Organizations of the Treadway Commission.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United
States) the consolidated financial statements and financial statement schedules as of and for the year ended
December 31, 2009 of the Company and our report dated February 26, 2010 expressed an unqualified opinion on
those financial statements and financial statement schedules.
/s/ DELOITTE & TOUCHE LLP
Minneapolis, Minnesota
February 26, 2010
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