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**EXHIBIT 31.1**

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**CERTIFICATION**

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I,Jeffry E. Sterba, certify that:

1.            I have reviewed thisAnnual Report on Form 10-K of each of PNM Resources, Inc. and Public ServiceCompany of New Mexico;

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

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

4.            Each registrant's othercertifying officer and I are responsible for establishing and maintainingdisclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e)and 15d-15(e)) and internal control over financial reporting (as defined inExchange Act Rules 13a-15(f) and 15d-15(f)) for such registrant and we have:

a)               Designedsuch disclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that materialinformation relating to such registrant, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this report is being prepared;

b)               Designed such internal control over financial reporting, or caused such internalcontrol over financial reporting to be designed under our supervision, toprovide reasonable assurance regarding the reliability of financial reportingand the preparation of financial statements for external purposes in accordancewith generally accepted accounting principles;

c)               Evaluatedthe effectiveness of such registrant's disclosure controls and procedures andpresented in this report our conclusions about the effectiveness of thedisclosure controls and procedures, as of the end of the period covered by thisreport based on such evaluation; and

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d)              Disclosedin this report any change in the registrant's internal control over financialreporting that occurred during each registrant's most recent fiscal quarter(each registrant's fourth fiscal quarter in the case of an annual report) thathas materially affected, or is reasonably likely to materially affect, theregistrant's internal control over financial reporting; and

5.            Each registrant's othercertifying officer and I have disclosed, based on our most recent evaluation ofinternal control over financial reporting, to such registrant's auditors andthe audit committee of such registrant's board of directors (or personsperforming the equivalent functions):

a)               Allsignificant deficiencies and material weaknesses in the design or operation ofinternal controls over financial reporting which are reasonably likely toadversely affect such registrant's ability to record, process, summarize andreport financial information; and

b)               Anyfraud, whether or not material, that involves management or other employees whohave a significant role in such registrant's internal control over financialreporting.

 

March 1, 2005
| /s/ Jeffry E. Sterba |
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Jeffry E. Sterba,Chairman, President andChief Executive Officer