N.M. Admin. Code § 17.3.580.13
Nothing contained herein shall be construed to limit the Commission in its powers, duties, or authority under the Public Utility Act other than requiring specific determinations regarding the prudence of cost overruns pursuant to NMPSC Rules 580.7 and 580.8 [17.3.580.11 and 12 NMAC] as a condition precedent to rate recovery of such cost overruns. In particular nothing contained herein shall be construed to bind the Commission to any particular ratemaking methodology or to diminish the Commission's authority to review the prudence of all costs incurred by a utility, including the certificated estimated cost of plant. All material provisions of the Public Utility Act shall apply to implementation of NMPSC Rule 580 [17.3.580 NMAC].
N.M. Admin. Code § 17.3.580.13