PNM Resources Files Plan for Complete Coal Exit by 2031 — New Mexico Utility Sets Carbon-Free Timeline

New Mexico's largest electric utility, PNM Resources, filed a resource plan with the New Mexico Public Regulation Commission on June 1, 2026, committing to the complete elimination of coal as a generation source for PNM customers by 2031. The plan outlines additions of wind, solar, and battery storage to replace coal generation while maintaining reliability and affordability. The coal exit timeline, embedded in a formal regulatory filing, marks a historic milestone for New Mexico's energy system — locking in coal retirement on a defined legal basis rather than as a voluntary commitment. PNM framed the plan as advancing a carbon-free future in line with New Mexico's Energy Transition Act, which mandates 100% carbon-free electricity by 2045. The filing follows the closure of the San Juan Generating Station (coal) in 2022 and the planned retirement of the Four Corners Power Plant.