Independent power producer (IPP) Innergex and system integrator Prevalon Energy have energised the San Andrés II battery energy storage system (BESS) in Chile.
Announced by Innergex on 3 May, the 42MW/210MWh project located in the Atacama region, builds on the existing San Andrés BESS I project, which are both connected to the San Andrés solar facility.
Innergex announced the energisation via LinkedIn. The company did not disclose if Prevalon was still involved. A representative for Mitsubishi Power spinoff Prevalon Energy confirmed to Energy-Storage.news that the company is still involved with this project and the 20MW/100MWh Salvador II BESS.
In November 2024, Innergex and Prevalon announced they would be adding capacity to two sites in Chile, the Salvador 1 BESS, which was completed in October 2023, and San Andres 1, which was commissioned in summer 2024.
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These additions bring San Andrés’ combined capacity to 77MW/385MWh and Salvador’s combined capacity to 62MW/310MWh.
When the additions were announced, the companies said that the projects would feature Prevalon’s HD 511 liquid-cooled lithium iron phosphate (LFP) AC solution, power conversion systems equipped with inverters and medium-voltage transformers, a US-made energy management system (EMS), and SCADA interface.
Prevalon said the technology meets IEC 62443-5-1 Level Two cybersecurity standards and holds UL 1973, UL 9540, and NFPA 855-2023 safety certifications.
Chile is experiencing rapid growth in BESS deployment. According to current trends, the Chilean renewable energy and storage association ACERA projects that approximately 9GW of BESS capacity, averaging 4-hour duration, will be operational by the end of 2026, surpassing the country’s 2030 goal of 2GW, four years ahead of schedule.
Last month, Spanish IPP Sonnedix signed three power purchase agreements (PPAs) for its 117MW/643.8MWh Sonnedix Librillo BESS project, with the Chilean, renewables-focused subsidiary of mining and forestry group COPEC, Copec EMOAC.
In March, another Spanish IPP, Grenergy, procured 2,600MWh of battery storage equipment for its Central Oasis solar-plus-storage complex in Chile.
In March 2025, Innergex began commercial operations at its 30MW/120MW Hale Kuawehi BESS on Hawaii island.
July of that same year saw the company acquired by global investment group La Caisse. Most recently, in April 2026, Innergex announced the commissioning of the La Cense wind farm in the municipality of Saint-André-Farivillers in France.
According to Innergex, the Salvador II BESS is progressing toward the energisation stage.
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