MEXICO CITY, MEXICO (Fidencio Casillas, Energy Analytics Institute, 17.Feb.2025) — Argentina’s Energy Secretariat published a national and international tender called “GBA Storage -AlmaGBA”, through Resolution 67/2025, intended for the contracting of electricity storage plants.
This initiative, unprecedented in the South American country but already applied worldwide, seeks to add 500 MW of storage capacity in critical nodes of the Metropolitan Area of Buenos Aires (AMBA), with an estimated investment of $500mn and an execution period of 12-18 months.
The goal is to ensure a more reliable and efficient electricity supply, especially during peak demand, the Energy Secretariat said 17 Feb. 2025 in an official statement. This new infrastructure is the beginning of a series of measures aimed at guaranteeing the supply of energy in the country, starting with the AMBA.
Provincial jurisdictions are invited to analyze this modality and replicate similar actions in their territories, attending to the critical nodes that the Wholesale Electricity Market Administrator Company (CAMMESA) has already identified, the Energy Secretariat said.

After decades of disinvestment, the Argentine electricity system faces serious challenges in terms of infrastructure and response capacity. This tender for state-of-the-art batteries (BESS) marks a paradigm shift, prioritizing private investment and technological innovation to solve structural problems.
The storage contracts will be made with the distributors Edenor and Edesur, and will have the support of the CAMMESA Managing Company as guarantor.
This action is part of a series of measures that the national government under Argentina’s president Javier Milei has been developing since Oct. 2024 as part of a contingency plan, which includes short, medium and long-term actions to recover an electrical system that in Dec. 2023 was in a critical state, the Energy Secretariat said.
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By Fidencio Casillas reporting from Mexico City. © 2025 Energy Analytics Institute (EAI). All Rights Reserved.