Company Description
PNM (Public Service Company of New Mexico) is a regulated electric utility and a wholly owned subsidiary of TXNM Energy, Inc. PNM operates as part of an energy holding company structure that also includes Texas-New Mexico Power Company (TNMP). According to company disclosures, TXNM Energy is based in Albuquerque, New Mexico and delivers electricity to more than 800,000 homes and businesses across New Mexico and Texas through its regulated utilities PNM and TNMP.
PNM is described in TXNM Energy’s segment reporting as a vertically integrated electric utility in New Mexico with distribution, transmission and generation assets. In that role, PNM is responsible for generating or procuring electricity, transmitting it over high-voltage lines, and distributing it to customers within its service territory. The broader holding company has stated that PNM serves customers with a diverse mix of generation and purchased power resources totaling 3.3 gigawatts of capacity, and that this mix includes coal, natural gas, nuclear and wind resources. Earlier descriptions of the group also reference generation capacity of more than 2,530 megawatts with a balanced mix of coal, natural gas, nuclear and wind generation.
PNM functions within TXNM Energy’s Utilities sector footprint, which is focused on regulated electric service. The company’s industry classification in the provided data is nuclear electric power generation, reflecting that nuclear generation is one of the resource types used in its power supply portfolio. The combination of transmission, distribution and generation assets at PNM, together with TNMP’s transmission and distribution operations in Texas, forms the core of TXNM Energy’s regulated utility business.
TXNM Energy has explained that it organizes its financial reporting into three segments: PNM, TNMP, and Corporate and Other. PNM is identified as the New Mexico vertically integrated electric utility segment. TNMP is identified as an electric transmission and distribution utility in Texas, and Corporate and Other reflects the holding company and other subsidiaries. This segmentation highlights PNM’s role as the integrated utility serving New Mexico within the group’s overall structure.
PNM’s operations are described in the context of grid infrastructure and reliability. TXNM Energy communications refer to ongoing and planned investments in grid infrastructure, including initiatives such as grid modernization at PNM and a System Resiliency Plan at TNMP. These efforts are framed as supporting growth, reliability and resiliency in the company’s service territories. PNM’s participation in regional power markets is also noted: the company has been a participant in the Western Energy Imbalance Market (WEIM) operated by the California Independent System Operator (CAISO) and has announced a plan to join CAISO’s Extended Day-Ahead Market (EDAM), subject to the broader market’s launch schedule.
TXNM Energy has stated that PNM’s participation in WEIM has provided significant benefits to New Mexico customers, and that joining EDAM is viewed as a next step in realizing the value of New Mexico’s renewable energy potential for customers while maintaining clean and reliable service at the lowest possible cost. The company has also indicated a goal, at the holding company level, to achieve 100% emissions-free generation by 2040, with PNM’s diverse mix of generation and purchased power resources forming part of that long-term objective.
Within the holding company’s communications, PNM’s financial performance is reported as part of TXNM Energy’s consolidated results. Segment-level information identifies PNM’s contribution to GAAP and ongoing earnings, and describes factors affecting those results, such as new retail rates, load growth, weather impacts, performance of decommissioning and reclamation trusts, transmission margins, and depreciation and property tax expense associated with new capital investments. These disclosures underscore PNM’s role as a regulated utility whose earnings are influenced by regulatory decisions, capital investment programs and customer usage patterns.
TXNM Energy has also discussed regulatory matters that affect PNM, including rate reviews and settlements associated with the retirement of legacy generation assets such as the San Juan Generating Station. In prior periods, PNM’s GAAP earnings reflected regulatory disallowances related to such assets, which were described as affecting reported results. These items are presented in company materials that reconcile GAAP earnings to non-GAAP ongoing earnings, illustrating how PNM’s regulatory environment can influence reported financial performance.
In summary, PNM is the New Mexico vertically integrated electric utility within TXNM Energy’s regulated utility portfolio. It operates transmission, distribution and generation assets, serves customers in New Mexico as part of a broader group that delivers electricity to more than 800,000 homes and businesses in New Mexico and Texas, and uses a mix of coal, natural gas, nuclear and wind generation and purchased power resources. Its activities are closely tied to regulatory processes, grid infrastructure investment and participation in regional power markets as described in TXNM Energy’s public communications.
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