Our Businesses
TXNM Energy serves electricity to approximately 800,000 homes and businesses in New Mexico and Texas through its regulated utilities, PNM and TNMP.
PNM is a regulated utility in New Mexico with operations primarily engaged in the generation, transmission and distribution of electricity. It is the state's largest electricity provider. PNM serves nearly 550,000 New Mexico residential and business customers in Greater Albuquerque, Rio Rancho, Los Lunas, Belen, Santa Fe, Las Vegas, Alamogordo, Ruidoso, Silver City, Deming, Bayard, Lordsburg and Clayton. We also serve the New Mexico tribal communities of the Tesuque, Cochiti, Santo Domingo, San Felipe, Santa Ana, Sandia, Isleta and Laguna Pueblos (portions of the Eastern reservation area). PNM is regulated by the New Mexico Public Regulation Commission and the Federal Energy Regulatory Commission.
PNM’s capacity in electric generating facilities, which are owned, leased, or under Power Purchase Agreements, in commercial service as of December 31, 2022 is:
Transmission
As of December 31, 2022, PNM owned, jointly owned, or leased, 3,428 circuit miles of electric transmission lines (including the Eastern Interconnection Project); 5,767 miles of distribution overhead lines; 6,057 cable miles of underground distribution lines (excluding street lighting); and 250 substations.
Transmission Losses:
June 1, 2018 - May 31, 2019: 2.59%
June 1, 2019 - May 31, 2020: 2.40%
June 1, 2020 - May 31, 2021: 2.67%
June 1, 2021 - May 31, 2022: 3.06%
June 1, 2022 - May 31, 2023: 3.42%
SAIDI is an industry acronym for “System Average Interruption Duration Index” and is a measure of outage time experienced by customers when averaged across the entire system. It is measured in “minutes” because it is meant to show how many minutes of outage a typical customer would experience during the year.
SAIDI is used as an indicator of how your system is performing. We look at SAIDI as a measure of system performance and then formulate operating plans to minimize that number to the best of our ability given both financial and personnel constraints.
Transmission
TNMP provides transmission and distribution services in Texas under the provisions of Texas Electric Choice Act (TECA) and the Texas Public Utility Regulatory Act. TNMP’s transmission and distribution activities are solely within the Electric Reliability Council of Texas (ERCOT), which is the independent system operator responsible for maintaining reliable operations for the bulk electric power supply system in most of Texas. As of December 31, 2022, TNMP owned 992 circuit miles of overhead electric transmission lines; 7,319 pole miles of overhead distribution lines; 1,433 circuit miles of underground distribution lines; and 128 substations.
TNMP, along with all other entities within ERCOT who do not have their own control areas, does not calculate transmission losses. ERCOT, as the Independent System Operator and the entity who balances and manages settlement, calculates transmission losses for all transmission systems within its control area, including TNMP’s transmission systems.
TNMP provides transmission and distribution services to Retail Electric Providers (REPs) that provide electric service to customers in TNMP’s service territories. The number of end users below represents the customers of these REPs. Under TECA, end users in Texas have the ability to choose any REP to provide energy.
