Xcel Energy 2007 Annual Report Download - page 79

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Item 8 — Financial Statements and Supplementary Data
See Item 15(a)-1 in Part IV for index of financial statements included herein.
See Note 19 of Notes to consolidated financial statements for summarized quarterly financial data.
Management Report on Internal Controls Over Financial Reporting
The management of Xcel Energy is responsible for establishing and maintaining adequate internal control over financial
reporting. Xcel Energy’s internal control system was designed to provide reasonable assurance to the company’s
management and board of directors regarding the preparation and fair presentation of published financial statements.
All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems
determined to be effective can provide only reasonable assurance with respect to financial statement preparation and
presentation.
Xcel Energy management assessed the effectiveness of the company’s internal control over financial reporting as of
Dec. 31, 2007. In making this assessment, it used the criteria set forth by the Committee of Sponsoring Organizations
of the Treadway Commission (COSO) in Internal Control — Integrated Framework. Based on our assessment, we believe
that, as of Dec. 31, 2007, the company’s internal control over financial reporting is effective based on those criteria.
Xcel Energy’s independent auditors have issued an audit report on the company’s internal control over financial
reporting. Their report appears on the following page.
/S/ RICHARD C. KELLY /S/ BENJAMIN G.S. FOWKE III
Richard C. Kelly Benjamin G.S. Fowke III
Chairman, President and Chief Executive Officer Vice President and Chief Financial Officer
February 20, 2008 February 20, 2008
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