Exhibit 23.1
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT
We consent to the incorporation by reference in this Registration Statement of Itron, Inc. on Form S-8 of our report dated March 8, 2004 (which expresses an unqualified opinion and includes an explanatory paragraph relating to a change in method of accounting for goodwill and other intangible assets in 2002, discussed in Note 1), appearing in the Annual Report on Form 10-K of Itron, Inc. for the year ended December 31, 2003.
/s/ DELOITTE & TOUCHE LLP
Seattle, Washington
May 28, 2004