Argentina has officially launched a 700 MW international tender for standalone battery energy storage systems (BESS) under the AlmaSADI programme, aimed at strengthening grid reliability and improving electricity supply stability across the country. The initiative forms part of the government’s broader efforts to enhance power system resilience and integrate flexible storage solutions into the national grid.
The tender, issued under Resolution SE 50/2026, invites proposals for new storage projects with capacities ranging between 10 MW and 150 MW per connection node. Each project must be capable of delivering contracted capacity for a minimum duration of four consecutive hours, ensuring dependable support during peak demand periods.
Successful bidders will be awarded long-term contracts of up to 15 years. The CAMMESA will act as the contracting authority and buyer of available storage capacity. The tender establishes a maximum remuneration cap of USD 12,500 per MW per month for capacity availability.
The bidding process follows a defined schedule, with technical submissions due in early May 2026, followed by evaluation and the opening of financial offers in June 2026. Final awards are expected later that month, with contracts to be signed shortly thereafter.
Under the programme’s framework, contractual obligations will commence on January 1, 2027. All selected projects must achieve commercial operation no later than December 31, 2029, ensuring timely deployment of the planned storage capacity.
The AlmaSADI tender expands battery storage development beyond the Buenos Aires metropolitan area and targets multiple regions of the Argentine Interconnection System, including Buenos Aires province (outside AMBA), Centro, La Pampa, Litoral, Northeast Argentina (NEA), and Northwest Argentina (NOA). The move builds on previous storage initiatives and marks a significant step in Argentina’s ongoing grid modernization and energy transition efforts.
