With the advent of December New tariff schedules For services Natural gas and electric power In it Buenos Aires Metropolitan Area (AMBA)This is after a series of decisions were approved by national regulatory bodies. The measures, which affect both residential users, businesses, industries and public welfare entities, respond to the updated prices and rates policy promoted by Ministry of Economy and Minister of EnergyThis is within the framework of the continuity of energy emergencies and the five-year review of rates.
In the case of natural gas National Gas Regulatory Authority (ENARGAS) Ordered, through Resolutions 917/2025 and 919/2025, the approval of the new tariff schedules. Metrogas SA and NatureBan SArespectively.
With these updates, they published how end-user rates will be formed, which will reflect gas prices in Point of Entry into the Transport System (PIST)This is in accordance with the values set by the Ministry of Energy within the framework Gas plan.Ar.
In fact, last week they made the PIST increase official, so Minister of Economy He considered that “it is reasonable and wise to continue until December 2025 in the process of updating prices and rates in the energy sector,” and specified that “the corresponding rates for the natural gas transmission and distribution sectors must be determined in accordance with the results of the five-year price reviews conducted by the National Gas Regulatory Authority (Enargas).”
In this context, a five-year tariff review was approved for both distributors, stipulating that the resulting increases will be implemented in 31 consecutive monthly increases. The tariff update also takes into account the monthly change in internal price indices and consumer prices, according to the methodology specified in the Basic Licensing Rules (RBL), which were amended by the Ministry of Energy and accepted by licensees.
Hence, the new tariff schedules for Metrogas SA and NatureBan SA They include updated gas prices in PIST, the next step of RQT and the planned monthly update in RBL.
Regarding the specified values, for residential users Metrogas SA In the Autonomous City of Buenos Aires and the suburbs of Buenos Aires, the fixed monthly fee for the R1 category is US$3,419.35, while the R4 category is US$81,691.57. The price of gas at PIST is $154.96 per cubic meter, with the price including excise duty of $128.79 per cubic meter and a transportation cost of $88.48 per cubic meter. The transportation cost composition shows a participation of 54.14% for TGS-Nqn-GBA and 28.77% for TGS-TdF-GBA, among other components.
to NatureBan SAoperating north of Greater Buenos Aires, the fixed monthly fee for the R1 category is US$2,802.39, and for the R4 category it is US$30,008.88. The price of gas at PIST is $157.12 per cubic meter, with the price including excise duty of $136.35 per cubic meter and a transportation cost of $70.64 per cubic meter. In the transportation cost combination, TGS-Nqn-GBA accounts for 62.02% and TGN-Nqn-GBA accounts for 25.97%.
Decisions too They are considering differential rates for public welfare entities and neighborhood clubsas well as for users with diluted propane/butane gas distributed through networks in specific locations, such as Tres Sargentos and Cucullú.
In addition, the maximum amounts of fees and charges authorized to be charged for various concepts, such as installation tests, registration, reconnection and technical services, have been set.
Regarding electrical energy, Dr National Electricity Regulatory Authority (ENRE) Approved, through Resolutions 797/2025 and 798/2025, the new tariff schedules for Edesor SA and Edenor SAwhich will rule from December 1, 2025.
These decisions are based on updated energy reference prices (Butrev), stable energy price (He pees(and seasonal transportation price)pet) In accordance with the provisions of the Ministry of Energy for the period from December 2025 to April 2026.
In recitations of standards, Minister of Economy He stressed that, with regard to electric energy, “the stabilized energy price (SEP) applicable to the residential sector, in accordance with the provisions of point 7.3.1 of Annex I “Rules for normalization and gradual adjustment of MEM” of SE Resolution No. 400 of October 20, 2025, shall be increased by three point twenty-seven percent (3.27%) and that the seasonal price for high voltage transmission shall be adjusted by five point eighty-seven percent (5.87%).”
In this sense, electricity transmission and distribution rates are also adjusted according to the five-year reviews and the monthly benchmarking formula, which weights the domestic wholesale price index by 67% (IPIM(and by 33% consumer price index)Consumer price index), published by INDEC. to Edesor SASpecial distribution cost increased by 1.86% compared to November 2025, while for November 2025, Edenor SA The increase is 1.93%.
The new tariff schedules for both distributors also maintain differentiated values for Tier 1, 2 and 3 residential users, as well as for neighborhood clubs, public benefit entities and user generators.
In addition, they specified the amounts that should be specified in bills, such as “wholesale electricity market cost” and “nation-state subsidy,” according to each user’s monthly consumption.
In line with what is constant, the value Average value added assistance As of December 1, 2025, the amount of USD 50,854 has been established for EDESUR SA and USD 55,121 for EDENOR SA.
Finally, the Cost of Energy Supplied in Bad Conditions (CESMC) and Cost of Energy Not Supplied (CENS) values that the two companies must apply from that date have been determined.