Chinese-based OEM Sungrow and Spanish IPP Sonnedix have signed a supply agreement for 643.8MWh of Sungrow’s PowerTitan 2.0 solution.
Announced 28 May, the PowerTitan 2.0 units will be used for the Sonnedix Librillo battery energy storage system (BESS) Project in Chile.
Sungrow launched the PowerTitan 2.0 in 2024. The BESS solution integrates a 5MWh battery with a 2.5MW power conversion system (PCS) into a standard 20-foot container. In June 2025, the company launched its PowerTitan 3.0 system, claiming that the new 30-foot product was the world’s largest BESS in both capacity and energy density.
The Librillo BESS project will feature a 5-hour ESS, the companies said delivery and installation is scheduled for Q1 2027.
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Sungrow will supply 128 units of its PowerTitan 2.0 liquid-cooled system and 32 medium-voltage cells for the project. The company said its technology “enables night-time power supply and contributes significantly to the integration of clean energy in the country, reinforcing a reliable service and ensuring high performance and long-term profitability.”
In April, Sonnedix signed three power purchase agreements (PPAs) for the Librillo BESS project with Copec EMOAC, the Chilean, renewables-focused subsidiary of mining and forestry group COPEC.
Sonnedix said the agreement represented a significant step in the consolidation of long-term contracts linked to renewables and BESS in the country. It includes supply at the Francisco node, in the northern part of Chile, and incorporates substantial storage capacity through BESS, helping to enable optimised solar energy management and mitigating its variability.
Chile continues to be a hotbed of BESS activity, where just this month, IPP ContourGlobal put a solar-plus-storage project combining 231MW of solar PV with a 200MW/1.3GWh BESS into commercial operation, and IPP Zelestra energised its 1GWh BESS in the Atacama Desert.
Additionally, IPP Innergex and system integrator Prevalon energised the 42MW/210MWh San Andrés II BESS, building on the existing San Andrés BESS I project, which are both connected to the San Andrés solar facility.
Experts from Sonnedix will appear as special guests in an Energy-Storage.news webinar, How solar IPPs hybridise: Lessons for solar-plus-storage design and operation, with Sonnedix, taking place next week, 10 June 2026 at 4pm CEST. The free webinar is sponsored by BESS analytics specialist TWAICE.
