Energy Storage as a Transmission Asset—Assessing the Multiple Uses of a Utility-Scale Battery Energy Storage System in Brazil

Pedro Ferreira Torres (), Alex R. A. Manito, Gilberto Figueiredo, Marcelo P. Almeida, José César de Souza Almeida Neto, Renato L. Cavalcante, Caio Cesar Vieira de Freitas Almeida da Silva and Roberto Zilles
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Pedro Ferreira Torres: Instituto de Energia e Ambiente, Universidade de São Paulo, São Paulo 05508-900, Brazil
Alex R. A. Manito: Instituto de Energia e Ambiente, Universidade de São Paulo, São Paulo 05508-900, Brazil
Gilberto Figueiredo: Escola de Engenharia, Universidade Federal Fluminense, Rio de Janeiro 24020-141, Brazil
Marcelo P. Almeida: Instituto de Energia e Ambiente, Universidade de São Paulo, São Paulo 05508-900, Brazil
José César de Souza Almeida Neto: Escola de Engenharia, Universidade Presbiteriana Mackenzie, São Paulo 01302-907, Brazil
Renato L. Cavalcante: Grupo de Estudos e Desenvolvimento de Alternativas Energéticas, Universidade Federal do Pará, Belém 66075-110, Brazil
Caio Cesar Vieira de Freitas Almeida da Silva: ISA Energia, São Paulo 04794-000, Brazil
Roberto Zilles: Instituto de Energia e Ambiente, Universidade de São Paulo, São Paulo 05508-900, Brazil

Energies, 2025, vol. 18, issue 4, 1-24

Abstract: Transmission flexibility is a key component of current power systems and demands a reconfiguration of alternatives to expand transmission infrastructure. This paper addresses the use of a Battery Energy Storage System (BESS) as an asset of the transmission system that provides increased transmission capacity. Furthermore, the BESS also supports operational procedures of the transmission system in the course of the re-establishment of normal operation during transients, which helps maintain the power quality requirements. A case study is presented to assess the additional capabilities that an operational 30 MW/60 MWh BESS primarily used to provide congestion relief in the state of São Paulo, Brazil, could provide to the power system. Based on a 5-year horizon transmission and generation expansion plans by local governing bodies, a set of four alternative applications for this BESS was proposed and studied, as follows: (1) increased operational flexibility under contingencies and maintenance, (2) islanded operation for increased reliability, (3) grid support during system restoration, and (4) increased hosting capacity for variable renewables. The results show that the BESS improves performance and power quality indexes while aiding the operation during contingencies.

Keywords: energy storage; ancilary services; transmission systems; system planning (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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