TSO inaugurates 30MW BESS in Brazil

LinkedIn
Twitter
Reddit
Facebook
Email

A 30MW battery energy storage system has been inaugurated by transmission system operator (TSO) ISA CTEEP in Brazil.

The TSO announced the energising of the BESS yesterday (29 November), which it said made it the first TSO to have a large-scale storage system on the country’s transmission network.

It didn’t disclose the location but said the BESS would be discharged during peak demand periods to support the electricity network, increasing the security and reliability of the service. A press release indicated the system has a two-hour discharge generation, making its capacity 60MWh.

A total of US$27 million was invested in the project and the TSO’s permitted annual income from the unit is approximately US$5 million.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

ISA CTEEP is active in 17 of the 26 states in Brazil and transmits approximately 30% of all electricity produced in the country, and is part of the ISA Group, which is active in other LATAM countries.

Juan Emilio Posada Echeverri, president of ISA Group, said: “This project has provided us with great learning and we believe that, due to its pioneering nature, it will be a great laboratory for the sector and for the other ISA companies.

“Precisely, one of the great challenges of the energy transition for ISA is the adaptation of the existing network and achieving a better use of the available capacity. In this sense, batteries are a sample of how technology and innovation enable increasingly flexible and intelligent systems, maintaining reliability and resilience as a priority.”

The project appears to be similar in terms of use case to so-called ‘Grid Boosters’ being launched in Germany by some of its TSOs, including one which system integrator Fluence recently announced it would deploy.

Although a large market, Brazil has been relatively quiet for battery energy storage announcements despite being a relatively early mover in trialling various different battery chemistries, as Energy-Storage.news reported back in 2018. Two years later, BloombergNEF reported that mining giant Vale would deploy a 5MW/10MWh system, the country’s largest.

Read previous Energy-Storage.news coverage of developments in Brazil here.

8 September 2026
Barcelona, Spain
Battery & Energy Storage Tech Europe (BESTE) is Europe’s industrial scaling platform for stationary and industrial battery applications — not EVs. Taking place 8–9 September 2026 at Fira de Barcelona, BESTE brings together utilities, IPPs, energy-intensive industries, data centres, ports, rail, maritime, defence and aerospace OEMs — all deploying or integrating battery storage at scale. Over 100 companies already confirmed — including EDP Renewables, Acciona, Endesa, Naturgy, Neoen, Galp, Basquevolt and Veolia — alongside 40+ expert speakers and international institutional support from BEPA, BVES, LDES and Volta Foundation. Where Europe’s battery & ES ecosystem turns projects into reality.
15 September 2026
San Diego, USA
You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.
27 October 2026
Santiago, Chile
Energy Storage Summit Latin America brings together developers, investors, utilities and policymakers to explore how storage is advancing system stability, regulation, deployment and new revenue models across the region. With insights from Chile, Argentina, Brazil, Mexico and beyond, the Summit focuses on financing, policy clarity, hybridisation, supply chain development and project optimisation as LATAM accelerates its storage buildout.

Read Next

June 23, 2026
Renewables developer rPlus Energies has announced start of commercial operations for the 400MW/1,600MWh Green River Energy Centre in Emery County, Utah, US.
Premium
June 23, 2026
ZincFive, a manufacturer of nickel-zinc battery systems for data centre and AI infrastructure applications, announced on 11 June that it will become publicly traded through a merger with special purpose acquisition company (SPAC) Spark I Acquisition Corporation.
June 23, 2026
LS Power-owned REV Renewables and US development and investment company LS Power have commissioned the Tumbleweed Energy Storage facility in Kern County, California, US.
June 23, 2026
Meridian’s Waiinu Energy Park has been referred for consideration under New Zealand’s Fast-track Approvals Act.
June 22, 2026
In this interview with Energy-Storage.news, Colin Koon Peng Ho of Banpu NEXT explains why policy certainty now outweighs cost in APAC battery storage investment decisions, and discusses regulatory barriers, supply chain localisation and the most attractive BESS opportunities.