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GNA IV power station (Usina Termelétrica GNA IV) is an announced power station in São João da Barra, Rio de Janeiro, Brazil.
Location
Table 1: Project-level location details
| Plant name | Location | Coordinates (WGS 84) |
|---|---|---|
| GNA IV power station | São João da Barra, Rio de Janeiro, Brazil | -21.841458, -41.021415 (approximate)[1] |
Project Details
Table 2: Unit-level details
| Unit name | Status | Fuel(s) | Capacity (MW) | Technology | CHP |
|---|---|---|---|---|---|
| 1 | Announced[2][3][4][5] | fossil gas: LNG, fossil gas: natural gas[6] | 641[2][4] | combined cycle[7] | not found |
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[2] | Siemens Energy Brasil Ltda; BP PLC; Prumo Logistica SA; SPIC Brasil SA [33%][8][9][10][6][8][9][10][6][8][9][10][6][8][9][10][6] | State Power Investment Corp Ltd [33.0%]; 9 West Finance SARL; BP PLC; EIG Prumo Equity Investment Fund; 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 IV 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 II, GNA III, and GNA V.
In November 2019, the Ministry of Mines and Energy (MME) classified the GNA power station as a priority project, encompassing four gas-fired power stations and an onshore terminal.[11]
Commercial operations at the 1338 MW GNA I power station began in September 2021, with construction of the 1672 MW GNA II power station expected to begin shortly thereafter, and an additional 3.4 GW of capacity to eventually be added at the GNA III and GNA IV power stations.[12]
GNA entered both GNA III and GNA IV in Brazil's A-5 national energy auction in September 2021.[13] A fifth project, GNA V, was also listed as a participant in the same auction, but appears to have subsequently been abandoned.
In June 2025, the GNA II power station began operating commercially, becoming the largest gas-fired power station in Brazil.[14]
As of September 2025, owner Gas Natural Açu still did not list GNA III or GNA IV on its company webpage.[15] However, news reports as recent as December 2024 made it clear that Gás Natural Açu still regarded GNA IV as an active project for possible future development.[16][17]
Articles and Resources
References
- ↑ https://web.archive.org/web/20240125090259/https://app.powerbi.com/view?r=eyJrIjoiNjc4OGYyYjQtYWM2ZC00YjllLWJlYmEtYzdkNTQ1MTc1NjM2IiwidCI6IjQwZDZmOWI4LWVjYTctNDZhMi05MmQ0LWVhNGU5YzAxNzBlMSIsImMiOjR9. Archived from the original on 2024-01-25.
{{cite web}}: Missing or empty|title=(help) - ↑ 2.0 2.1 2.2 "Boletim Leilão de Energia, Segunda edição". IEMA-Instituto de Energia e Meio Ambiente. 2021-09-30. Archived from the original on 2024-01-25.
- ↑ https://revistaoe.info/gna-estuda-terceira-termeletrica-no-porto-do-acu/.
{{cite web}}: Missing or empty|title=(help) - ↑ 4.0 4.1 "Garantia Física de Empreendimentos Termelétricos - Leilão de Energia Nova A-5 de 2021" (PDF). EPE - Empresa de Pesquisa Energética. 2021-09-03. Archived from the original (PDF) on 2024-01-25.
- ↑ https://eixos.com.br/gas-natural/mercado-de-gas/prumo-avalia-entrar-com-gna-iii-no-proximo-leilao-de-capacidade/.
{{cite web}}: Missing or empty|title=(help) - ↑ 6.0 6.1 6.2 6.3 6.4 (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×tamp=1612203253668. Archived from the original (PDF) on 2024-01-25.
{{cite web}}: Missing or empty|title=(help) - ↑ (PDF) https://web.archive.org/web/20240125112223/https://www.gna.com.br/Portals/0/press-release/port-gna-i-inicia-operacao-comercial.pdf. Archived from the original (PDF) on 2024-01-25.
{{cite web}}: Missing or empty|title=(help) - ↑ 8.0 8.1 8.2 8.3 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) - ↑ 9.0 9.1 9.2 9.3 (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) - ↑ 10.0 10.1 10.2 10.3 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) - ↑ thunders. "UTE GNA III poderá emitir debêntures de infraestrutura". www.canalenergia.com.br (in português do Brasil). Retrieved 2021-09-14.
- ↑ "GNA starts commercial operations of its first power plant at Port of Açu (RJ)" (PDF). Prumo Logística. September 16, 2021.
{{cite web}}: CS1 maint: url-status (link) - ↑ "PORTARIA Nº 937/SPE/MME". Ministério de Minas e Energia/Secretaria de Planejamento e Desenvolvimento Energético. September 14, 2021.
{{cite web}}: CS1 maint: url-status (link) - ↑ "GNA II receives approval from ANEEL to begin commercial operations". SPIC Brasil. 2025-06-02.
{{cite web}}: CS1 maint: url-status (link) - ↑ "Usinas Termelétricas". www.gna.com.br. Retrieved 2022-03-30.
{{cite web}}: CS1 maint: url-status (link) - ↑ https://revistaoe.info/gna-estuda-terceira-termeletrica-no-porto-do-acu/.
{{cite web}}: Missing or empty|title=(help) - ↑ https://eixos.com.br/gas-natural/mercado-de-gas/prumo-avalia-entrar-com-gna-iii-no-proximo-leilao-de-capacidade/.
{{cite web}}: Missing or empty|title=(help)
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.
