The Argentinian Government has launched a new battery energy storage system (BESS) tender seeking 700MW.
The duration of the batteries for this tender is 4 hours, which could bring the tender up to 2.8GWh of BESS capacity.
Unlike the first tender, which ended up awarding 713MW of BESS, this tender will be open to the entire country and not just Buenos Aires.
The goal for this tender is to incorporate new BESS plants in critical nodes across several regions – NOA, NEA, Centro, Litoral, Cuyo and Buenos Aires (excluding AMBA) – with the aim of strengthening the reliability of the Argentine Interconnection System (SADI) and reducing service interruptions, especially during peak demand.
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Awarded projects will have a 15-year offtake agreement.
The distribution of the capacity sought for each region is as follows:
| Region | Power [MW] |
| BAS | 150 |
| CENTRO | 100 |
| LA PAMPA | 50 |
| LITORAL | 220 |
| NEA | 250 |
| NOA | 120 |
| CUYO | 100 |
Similar to the previous auction, it will be held by wholesale market operator CAMMESA (Compañía Administradora del Mercado Mayorista Eléctrico Sociedad Anónima), which last week opened the consultation period to send over questions regarding the auction. Questions can be sent until 17 April, while the deadline to submit bids has been set for 8 May 2026 with the auction results scheduled for 19 June 2026.
This tender follows the first one held last year, which saw high participation with more than 1.3GW of volume submitted for an initial output of 500MW sought. Current work is being carried out for the commissioning of the awarded projects.
Energy-storage.news spoke with Juan Luchilo, analysis and control manager at CAMMESA, last year during the Energy Storage Summit Latin America, about the first tender and how it helped improve future tenders.
One of the projects awarded in the first tender, the 90MW/481MWh Alma Sur project from utility YPF Luz, recently secured a supply agreement with Chinese manufacturer Trina Storage.
More details regarding the auction, including the location of the nodes, can be accessed here (in Spanish).
