São Luis Alumar power station

From Global Energy Monitor


São Luis Alumar power station is a 75.2-megawatt (MW) coal-fired power plant in São Luís, Maranhão, Brazil.[1]


The map below shows the location of the plant in São Luís, Maranhão, Brazil.

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São Luis Alumar power station is a captive two-unit, 75.2 MW mineral coal-fired power plant that serves the ALUMAR alumina refinery in São Luís, Maranhão, Brazil.[2] The refinery has operated since 1984, but the two coal units were added in 2009 in an expansion that cost the plant's sponsors $2.7 billion (USD).[3] According to the company website, the alumina refinery was able to increase their capacity to 3.7 million tons since the power station was built in 2009.[3]

Although the aluminum smelting operations were shuttered since 2015 there was no formal indication in company reporting that the coal units stopped operating;[4][5] however, the coal units were not included in Alcoa's 2020 annual report of energy facilities in Brazil.[6] In 2019, Alcoa noted in their sustainability report that residents of Coqueiro complained about odors, increased headaches & nausea, carbon dust, noise, and bauxite dust which led to a review of the coal burning process and purchase of a different type of coal in an attempt to reduce spontaneous combustion.[7] The operating status of the coal burning units is unclear during the seven years between 2015 and 2022.

In Alcoa's 2021 annual report, the company stated that it planned to restart its 268,000 mtpy of idle smelting capacity at Alumar, with normal operations to resume by the fourth quarter of 2022.[8] Alcoa stated the plant aluminum plant would be operated by 100% renewable energy by 2024.[4][5][8]

Project Details

  • Sponsor: Consórcio de Alumínio do Maranhão (ALUMAR)[9][10]
  • Parent company: Alcoa (54%), South32 (36%), Rio Tinto (10%)[8]
  • Location: São Luís, Maranhão, Brazil
  • Coordinates: -2.711211,-44.348013 (exact)
  • Coal type: Unknown
  • Coal source:
  • Gross generating capacity (operating): 75 MW[1]
    • Unit 1: Coal-fired subcritical, 38 MW (start-up in 2009)[2]
    • Unit 2: Coal-fired subcritical, 38 MW (start-up in 2009)[2]

Articles and resources


  1. 1.0 1.1 Tolmasquim, Mauricio (2016). "Energia Termelétrica: Gás Natural, Biomassa, Carvão, Nuclear" (PDF). Empresa de Pesquisa Energética (EPE). Retrieved April 12, 2021.
  2. 2.0 2.1 2.2 "Térmica Alumar inicia operação comercial de 75,2 MW - Blog do GESEL- Grupo de Estudos do Setor Elétrico - UFRJ". www.nuca.ie.ufrj.br (in português). Retrieved 2021-04-12.
  3. 3.0 3.1 "Fact Sheet: ALUMAR" (PDF). Alcoa.
  4. 4.0 4.1 Staff (2021-09-26). "Alcoa To Restart Alumar Aluminium Refinery In Brazil After Six Year Shutdown". Aluminium Insider. Retrieved 2021-11-22.
  5. 5.0 5.1 "Alcoa Plans Restart of Aluminum Smelting Capacity at Alumar in Brazil". news.alcoa.com. Retrieved 2021-11-22.
  6. "2020 Annual Report" (PDF). Alcoa. December 31, 2020. Retrieved November 22, 2021.
  7. "2019 Alcoa Sustainability Report" (PDF). Alcoa. 2020. Retrieved November 22, 2021.
  8. 8.0 8.1 8.2 "Annual Report 2021: Turning Raw Potential into Real Progress (p 13), SEC report (p 4)" (PDF). Alcoa. February 2022.
  9. "Alcoa -- The Element of Possibility". www.alcoa.com. Retrieved 2021-04-12.
  10. "Alumina". Alcoa. Retrieved 2021-05-14.

Related GEM.wiki articles

  • [[Brazil: country profile]]