ARTHUR ANDERSEN LLP May 15, 2000 Public Service Company of New Mexico: We are aware that Public Service Company of New Mexico and subsidiaries has incorporated by reference in its Registration Statement No. 33-65418, 333-03289, 333-03303, 333-32170 and 333-53367 its Form 10-Q for the quarter ended March 31, 2000, which includes our report dated May 15, 2000 covering the unaudited interim financial information contained therein. Pursuant to Regulation C of the Securities Act of 1933, that report is not considered a part of the registration statement prepared or certified by our firm or a report prepared or certified by our firm within the meaning of Sections 7 and 11 of the Act. Very truly yours, /s/ Arthur Andersen LLP - ----------------------- Arthur Andersen LLP