Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated February 28, 2008 (which express unqualified opinions and include explanatory paragraphs regarding the adoption of Financial Accounting Standards Board Financial Interpretation No. 47, Accounting for Conditional Asset Retirement Obligations in 2005, and Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payment and Statement of Financial Accounting Standards No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans - an amendment of FASB Statements No. 87, 88, 106, and 132R in 2006, and Financial Accounting Standards Board Financial Interpretation No. 48, Accounting for Uncertainty in Income Taxes in 2007), relating to the consolidated financial statements and financial statement schedules of Public Service Company of New Mexico, and the effectiveness of Public Service Company of New Mexico’s internal control over financial reporting appearing in the Annual Report on Form 10-K of Public Service Company of New Mexico for the year ended December 31, 2007, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.

/s/ DELOITTE & TOUCHE LLP

Dallas, Texas
April 1, 2008