GNA II power station

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GNA II power station (Usina Termelétrica GNA II) is an operating power station of at least 1672-megawatts (MW) in São João da Barra, Rio de Janeiro, Brazil. It is also known as Novo Tempo GNA II, Grussai.

Location

Table 1: Project-level location details

Plant name Location Coordinates (WGS 84)
GNA II power station São João da Barra, Rio de Janeiro, Brazil -21.84385, -41.01364 (exact)[1][2]
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Unit-level coordinates (WGS 84):

  • 1: -21.84385, -41.01364

Project Details

Table 2: Unit-level details

Unit name Status Fuel(s) Capacity (MW) Technology CHP Start year
1 Operating[3][4][5][6][7][8] fossil gas: LNG[5][9] 1672[3][10][11] combined cycle[11] not found 2025[12][7][13][8][11]

CHP is an abbreviation for Combined Heat and Power. It is a technology that produces electricity and thermal energy at high efficiencies. Coal units track this information in the Captive Use section when known.

Table 3: Unit-level ownership and operator details

Unit name Operator Owner Parent
1 Gás Natural Açu[14][15] BP PLC; Prumo Logistica SA; Siemens Energy Brasil Ltda; SPIC Brasil SA [33%][16][17][15][18][16][17][15][18][16][17][15][18][16][17][15][18] State Power Investment Corp Ltd [33.0%]; BP PLC; EIG Global Energy Partners LLC; Mubadala Investment Company PJSC; Siemens Energy AG

Ownership Tree

This ownership tree is part of the Global Energy Ownership Tracker, a project of Global Energy Monitor.

Background

The GNA II power station was one of five gas-fired power plants originally proposed by GNA (Gás Natural Açu) for the Port of Açu in Rio de Janeiro state; the others were known as GNA I, GNA III, GNA IV and GNA V.

As described on the company's website in 2021, the GNA II power station was to be made up of three Siemens gas turbines and one Siemens vapor turbine, generating a total of 1.6 GW of energy in a combined cycle.[19] The plant was to connect with the SIN via a 500 kV transmission line.[19]

Gas for the plant was to be supplied by the Porto do Açu FSRU, a floating storage and regasification unit in the nearby Port of Açu that began commercial operations in 2021. The FSRU, together with the GNA I and GNA II power stations, was billed as the largest and most efficient LNG-to-power complex in Latin America.[20][21]

2021: Construction begins

As of November 2021, Siemens reported that construction of the plant was already underway.[20] An official groundbreaking ceremony for the plant was held in January 2022[22], and in February 2022 Grupo Sener announced that it would provide all engineering services required to bring the plant online.[23]

In April 2023, Siemens delivered the first of the plant's three turbines, and GNA II reportedly remained on track to begin commercial operations in early 2025.[24]

2025: Commercial operation

As of September 2024, the GNA website and various other news sources continued to show an anticipated start-up date of January 2025.[21][25]

In March 2025, GNA's website and other sources indicated that the plant was nearly finished and undergoing operational testing, with commissioning expected by the end of May 2025.[25][26]

In June 2025, the GNA II power station received authorization from ANEEL (Brazil's national electricity regulator) to begin operating commercially, making it the largest operating fossil gas-fired power plant in the country.[27]

Articles and Resources

References

  1. https://web.archive.org/web/20221130051902/https://archive.org/details/brazil-aneel-sigel-usina-termeletrica-2020-04-09. Archived from the original on 30 November 2022. {{cite web}}: Missing or empty |title= (help)
  2. https://maps.app.goo.gl/c9tkVM6zHSno83PU9. {{cite web}}: Missing or empty |title= (help)
  3. 3.0 3.1 https://web.archive.org/web/20240125090149/https://dadosabertos.aneel.gov.br/dataset/siga-sistema-de-informacoes-de-geracao-da-aneel/resource/76310626-e2e0-4880-b199-d63fe287f279. Archived from the original on 2024-01-25. {{cite web}}: Missing or empty |title= (help)
  4. "Usinas Termelétricas". GNA (Gás Natural Açu). Archived from the original on 2024-10-01. Retrieved 2024-09-17.
  5. 5.0 5.1 https://eixos.com.br/energia-eletrica/brasil-vai-ter-maior-expansao-de-geracao-termeletrica-desde-2013/. {{cite web}}: Missing or empty |title= (help)
  6. https://en.clickpetroleoegas.com.br/mais-cara-que-duas-pontes-rio-niteroi-o-brasil-ergueu-a-maior-usina-a-gas-da-america-latina-com-r-7-bilhoes-e-colocou-o-porto-do-acu-no-centro-da-energia-mundial-nmb91/. {{cite web}}: Missing or empty |title= (help)
  7. 7.0 7.1 https://www.bnamericas.com/en/news/gna-ii-thermoelectric-plant-with-17-gw-of-power-begins-generating-energy-in-rio-de-janeiro. {{cite web}}: Missing or empty |title= (help)
  8. 8.0 8.1 "UTE GNA II recebe primeira turbina a gás" (PDF). GNA / InPress Porter Novelli. 2023-04-16. Archived from the original (PDF) on 2024-01-25.
  9. (PDF) https://web.archive.org/web/20240125090443/https://www.gna.com.br/Portals/0/press-release/ENG_JointPressRelease_ClosingSPIC_FINAL%20APPROVED.pdf?ver=2021-02-01-180539-140&timestamp=1612203253668. Archived from the original (PDF) on 2024-01-25. {{cite web}}: Missing or empty |title= (help)
  10. https://web.archive.org/web/20211112235311/https://www.prumologistica.com.br/en/press/gna-starts-commercial-operations-of-its-first-power-plant-at-port-of-acu-rj/. Archived from the original on 12 November 2021. {{cite web}}: Missing or empty |title= (help)
  11. 11.0 11.1 11.2 "UTE GNA II". GNA (Gás Natural Açu). Archived from the original on 2024-01-25. Retrieved 2024-09-17.
  12. https://app.powerbi.com/view?r=eyJrIjoiMGYyZWI0NzgtMGRlOC00M2ZjLTljZDYtZTVkYjljZjkxZDBkIiwidCI6IjQwZDZmOWI4LWVjYTctNDZhMi05MmQ0LWVhNGU5YzAxNzBlMSIsImMiOjR9. {{cite web}}: Missing or empty |title= (help)
  13. "GNA II segue em montagem da 1ª turbina no Porto de Açu". Revista O Empreiteiro. 2023-10-03. Archived from the original on 2024-05-10. Retrieved 2024-05-10.
  14. "SIGA - Sistema de Informações de Geração da ANEEL". Agência Nacional de Energia Elétrica (ANEEL). 2023. Archived from the original on 2024-01-25. Retrieved 2023-10-10.
  15. 15.0 15.1 15.2 15.3 15.4 https://web.archive.org/web/20240125121035/https://www.offshore-energy.biz/chinas-spic-buys-into-brazilian-lng-power-project/. Archived from the original on 2024-01-25. {{cite web}}: Missing or empty |title= (help)
  16. 16.0 16.1 16.2 16.3 https://web.archive.org/web/20240125122421/https://www.gna.com.br/en/gna/our-shareholders. Archived from the original on 2024-01-25. {{cite web}}: Missing or empty |title= (help)
  17. 17.0 17.1 17.2 17.3 (PDF) https://web.archive.org/web/20240124233259/https://energiaeambiente.org.br/wp-content/uploads/2022/12/termeletricas_IEMA_2021.pdf. Archived from the original (PDF) on 2024-01-24. {{cite web}}: Missing or empty |title= (help)
  18. 18.0 18.1 18.2 18.3 https://web.archive.org/web/20240125122537/https://portodoacu.com.br/prumo-bp-and-siemens-close-agreement-with-spic-to-participate-in-energy-infrastructure-projects-in-brazil/. Archived from the original on 2024-01-25. {{cite web}}: Missing or empty |title= (help)
  19. 19.0 19.1 "UTE GNA II". Gna. Archived from the original on May 3, 2021. Retrieved May 4, 2021.
  20. 20.0 20.1 "Siemens Energy secures major order for the largest LNG-to-power complex in Latin America". Siemens Energy. November 23, 2021.{{cite web}}: CS1 maint: url-status (link)
  21. 21.0 21.1 "Com GNA II, RJ terá maior parque termelétrico da AL". Diário do Porto. 2024-06-23.{{cite web}}: CS1 maint: url-status (link)
  22. "Governo lança pedra fundamental da UTE GNA II". CanalEnergia. January 31, 2022.{{cite web}}: CS1 maint: url-status (link)
  23. "SENER wins the contract for the basic and detailed engineering of the GNA II combined cycle power plant in Brazil". SENER. February 16, 2022.{{cite web}}: CS1 maint: url-status (link)
  24. "UTE GNA II recebe primeira turbina a gás" (PDF). GNA (Gás Natural Açu). April 2023.{{cite web}}: CS1 maint: url-status (link)
  25. 25.0 25.1 "UTE GNA II". GNA (Gás Natural Açu). Retrieved 2024-09-17.{{cite web}}: CS1 maint: url-status (link)
  26. Ruddy, Gabriela (2025-02-10). "Expansão de geração térmica no Brasil será a maior desde 2013". Eixos.{{cite web}}: CS1 maint: url-status (link)
  27. "GNA II receives approval from ANEEL to begin commercial operations". SPIC Brasil. 2025-06-02.{{cite web}}: CS1 maint: url-status (link)

Additional data

To access additional data, including an interactive map of gas-fired power stations, a downloadable dataset, and summary data, please visit the Global Oil and Gas Plant Tracker on the Global Energy Monitor website.