Exhibit 99.1

         Certifications Pursuant to Rules 13a-14 and 15d-14 of the 1934
                            Securities Exchange Act

CERTIFICATION:

I, Jeffry E. Sterba, certify that:

     1.        I have reviewed this current report on Form 8-K of PNM Resources,
               Inc. and Public Service Company of New Mexico;

     2.        Based on my knowledge, this current report does not contain any
               untrue statement of a material fact or omit to state a material
               fact necessary to make the statements made, in light of the
               circumstances under which such statements were made, not
               misleading with respect to the period covered by this current
               report;

     3.        Based on my knowledge, the financial statements, and other
               financial information included in this current report, fairly
               present in all material respects the financial condition, results
               of operations and cash flows of each registrant as of, and for,
               the periods presented in this current report;

     4.        Each registrant's other certifying officers and I are responsible
               for establishing and maintaining disclosure controls and
               procedures (as defined in Exchange Act Rules 13a-14 and 15d-14)
               for such registrant and we have:

     a)        designed such disclosure controls and procedures to ensure that
               material information relating to such registrant, including its
               consolidated subsidiaries, is made known to us by others within
               those entities, particularly during the period in which this
               current report is being prepared;

               b)   evaluated the effectiveness of such registrant's disclosure
                    controls and procedures as of a date within 90 days prior to
                    the filing date of this current report (the "Evaluation
                    Date"); and

               c)   presented in this current report our conclusions about the
                    effectiveness of the disclosure controls and procedures
                    based on our evaluation as of the Evaluation Date;

     5.        Each registrant's other certifying officers and I have disclosed,
               based on our most recent evaluation, to such registrant's
               auditors and the audit committee of such registrant's board of
               directors (or persons performing the equivalent function):

               a)   all significant deficiencies in the design or operation of
                    internal controls which could adversely affect such
                    registrant's ability to record, process, summarize and
                    report financial data and have identified for such
                    registrant's auditors any material weaknesses in internal
                    controls; and

               b)   any fraud, whether or not material, that involves management
                    or other employees who have a significant role in such
                    registrant's internal controls; and

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     6.        Each registrant's other certifying officers and I have indicated
               in this current report whether or not there were significant
               changes in internal controls or in other factors that could
               significantly affect internal controls subsequent to the date of
               our most recent evaluation, including any corrective actions with
               regard to significant deficiencies and material weaknesses.

June 12, 2003




/s/ Jeffry E. Sterba
- ----------------------------------
Jeffry E. Sterba,
Chairman, President and
Chief Executive Officer



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