Exhibit 16.0 June 11, 2002 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Dear Sir/Madam: The representations made in this letter are based solely on discussions with and representations from the engagement partner and manager on the audits of the financial statements of this registrant for the two most recent fiscal years. Those individuals are no longer with Arthur Andersen LLP. We have read the first three paragraphs of Item 4 in the Form 8-K dated June 10, 2002 of PNM Resources, Inc. filed with the Securities and Exchange Commission and have found no basis for disagreement with the statements contained herein. Very truly yours, /s/Arthur Andersen LLP - --------------------------------------- ARTHUR ANDERSEN LLP cc: Mr. John R. Loyack, VP, Corporate Controller and Chief Accounting Officer, PNM Resources, Inc.