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Brazil Launches First Sodium Based Solar ESS

Aug 14, 2025

Screenshot-2025-08-12-at-15111UCB Power has inaugurated what it says is Brazil's first solar ESS with sodium battery storage, installed in the remote Amazonian community of Tumbira. The project is a partnership with FAS.

The solar ESS plant has 20 solar modules of 375 Wp each, for a total installed capacity of 7.50 kWp. The storage system consists of 16 sodium batteries (48 V/50 Ah), with a combined solar battery storage capacity of 38.40 kWh.

UCB Power has deployed more than 60,000 solar storage systems for off-grid and consumers in Brazil, including individual systems (SIGFI) and solar mini grid (MIGDI), benefiting more than 240,000 people in remote areas.

According to UCB Power, this is the first sodium battery installation at a power plant in the country.

"We believe energy is an essential enabler of education, food, health and development. With that purpose, we continue working to bring dignity and transformation through clean, accessible energy," said Marcelo Rodrigues, UCB Power's vice president of sales and innovation.

"This project, the result of the partnership between FAS and UCB Power, is an example of how innovative and sustainable solutions can change realities, promoting dignity and autonomy for traditional communities in the Amazon," said Valcléia Lima, superintendent of Community Sustainable Development at FAS.

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