The inauguration of the 30MW/60MWh system took place last year, on the networks of transmission system operator (TSO) ISO CTEEP, as reported by Energy-Storage.news in November.
ISO CTEEP claimed it as the first large-scale battery energy storage system (BESS) on Brazil’s transmission grid. The project required a total US$27 million investment. The transmission operator is permitted by regulations to earn up to US$5 million revenues from the asset each year.
It will help increase hosting capacity to cope with expected increase in demand on a congested network enabling the TSO to defer from investing in a more expensive traditional transmission line, making this project an example of a ''non-wires alternative'' or storage-as-a-transmission asset.
It will also help reduce reliance on fossil fuel peaker plants, which can be among the most polluting and expensive generating units to run on the grid, despite typically having a low capacity factor through only coming into use infrequently during the year''s peak events.
US technology company Fractal EMS said yesterday that it worked on integrating the system, together with Brazilian energy storage solutions provider You.On, which was selected for the project through a competitive tender process.
Fractal EMS provided the energy management system (EMS) controls, SCADA and other components to system integrator You.On. Meanwhile You.On selected inverters from manufacturer Kehua, while the BESS is equipped with CATL''s liquid cooled battery storage solution.
Fractal EMS CEO Daniel Crotzer said the Brazilian energy storage market "presents a significant growth opportunity," claiming battery storage could "propelBrazilto 100% clean energy".
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.
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.
Brazil’s National Electric Energy Agency (ANEEL) approved the first large-scale battery energy storage project in the Brazilian transmission system. This is an innovative project of ISA CTEEP, the largest private electric power transmission company in Brazil, which will be installed at the Registro substation (São Paulo state), to supply the southern coast of São Paulo.
The lithium batteries will be installed in an area of approximately 4.000 m², with a size equivalent to about 30 containers, and will have 30 MW of installed power, guaranteeing the maximum demand of the South Coast of the state, of approximately 400 MW, and benefiting about two million people. In addition, the batteries will prevent the emission of 1.194 tons of greenhouse gases in two years of operation of the technology and will generate approximately 400 direct jobs until the system is implemented.
The technology will act at times of peak consumption, as a backup to the power grid, ensuring additional energy for up to two hours, totaling 60 MWh, avoiding the interruption of power supply due to excess demand during this period, thus ensuring greater safety and reliability in the provision of service to society.
“The project is a historic milestone for the electricity sector and will serve as a laboratory for innovation, promoting discussions on how to insert energy storage in batteries, especially for its immediate response capacity and high operational flexibility, necessary for the transmission grid.” It is also a step towards the diversification of our business,” explained Rui Chammas, ISA CTEEP’s CEO.
The investment authorized by the regulator is close to BRL 146 million (USD 26 million) and the works are expected to be delivered in November 2022, to meet summer demand from 2022/2023. The Allowed Annual Revenue for the execution of the project will be approximately BRL 27 million (USD 4,8 million).
The technology also contributes to advances in decarbonization, decentralization and digitalization, as it reduces the costs of system operation and expansion, allows the postponement of the construction of large projects, increases the integration of economic energy sources, and can be reused in other parts of the country that need reinforcement in the electricity system.
ISA CTEEP, in partnership with the University of São Paulo (USP), since 2018, studied the feasibility of applying this solution in power transmission, before submitting the Registro substation project to the transmission system planning bodies and the regulator, being considered the first and only concrete application case.
ISA CTEEP is the largest private electric power transmission company operating in 17 Brazilian states. Through ISA CTEEP, ISA Group is in charge in Brazil of transmitting around 33% of the electric power produced by the National Interconnected System (SIN), 60% of the electric power consumed in the southeast Region, and 94% of the electric power consumed in the state of São Paulo. Its electric power system comprises over 20 thousand kilometers of transmission lines and 140 substations (assets in operation and under construction).
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