EX-23.1 9 d22803exv23w1.txt CONSENT OF ERNST & YOUNG LLP EXHIBIT 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the following registration statements on Form S-3 and Form S-4, and related prospectuses of The Williams Companies, Inc. and in the following registration statements on Form S-8 of our reports dated March 8, 2005, with respect to the consolidated financial statements and schedule of The Williams Companies, Inc., The Williams Companies, Inc. management's assessment of the effectiveness of internal control over financial reporting, and the effectiveness of internal control over financial reporting of The Williams Companies, Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2004: Form S-3: Registration Statement Nos. 333-20927, 333-20929, 333-27311, 333-29185, 333-35097, 333-35101, 333-70394, 333-85540, and 333-106504 Form S-4: Registration Statement Nos. 333-57416, 333-63202, 333-72982, 333-85568, and 333-101788 Form S-8: Registration No. 33-58671 - The Williams Companies, Inc. Stock Plan for Nonofficer Employees Registration No. 33-58971 - Transco Energy Company Thrift Plan Registration No. 333-03957 - The Williams Companies, Inc. 1996 Stock Plan for Non-Employee Directors Registration No. 333-11151 - The Williams Companies, Inc. 1996 Stock Plan Registration No. 333-40721 - The Williams Companies, Inc. 1996 Stock Plan for Nonofficer Employees Registration No. 333-51994 - The Williams Companies, Inc. 1996 Stock Plan for Nonofficer Employees Registration No. 333-66474 - The Williams Companies, Inc. 2001 Stock Plan Registration No. 333-76929 - The Williams International Stock Plan Registration No. 333-85542 - The Williams Investment Plus Plan Registration No. 333-85546 - The Williams Companies, Inc. 2002 Incentive Plan Tulsa, Oklahoma March 8, 2005