Seival Coal Mine

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Seival Coal Mine (Mina do Seival) is an operating coal mine in Candiota, Rio Grande do Sul, Brazil.

Location

Table 1: Project-level location details

Mine Name	Location	Coordinates (WGS 84)
Seival Coal Mine	Candiota, Rio Grande do Sul, Brazil	-31.449159, -53.707527 (exact)

The map below shows the exact location of the coal mine:

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Project Details

Table 2: Project status

Status	Status Detail	Opening Year	Closing Year
Operating	–	2018	–

Table 3: Operation details

Note: The asterisk (*) signifies that the value is a GEM estimated figure.

Capacity (Mtpa)	Production (Mtpa)	Year of Production	Mine Type	Mining Method	Mine Size (km2)	Mine Depth (m)	Workforce Size
2.8	1.9	2023	Surface	Strip	–	50*	261

Table 4: Coal resources and destination

Total Reserves (Mt)	Year of Total Reserves Recorded	Total Resources (Mt)	Coalfield	Coal Type	Coal Grade	Primary Consumer/ Destination
450	–	631.548	–	Subbituminous	Thermal	Coal Plant

Table 5: Ownership and parent company

Note: To access more comprehensive data on energy ownership, please visit the Global Energy Ownership Tracker.

Owner	Parent Company	Headquarters
Copelmi Mineração Ltda [100.0%]	COPELMI	Brazil

Table 6: Historical production (unit: million tonnes per annum)

ROM or Saleable	2017	2018	2019	2020	2021	2022	2023	2024	2025
ROM	–	–	–	–	2.12	–	1.6	–	–

Note: The above sections were automatically generated and are based on data from the Global Coal Mine Tracker August 2026 release.

Ownership Tree

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

Background

Seival mine or Seival Sul Mineração (SSM) is a coal mine in Candiota, Rio Grande do Sul, Brazil. Seival Sul Mineração is the owner of the Seival Mine project, which began operating commercially in 2018. The mine has a capacity of 2.8 million tonnes per annum, and has contracted to supply 160 to 230 thousand tonnes of coal per month to fuel the nearby Pampa Sul power station through 2043.

The mine operates as a surface strip mine, with open pits reaching depths of 40 to 80 metres. The mining method involved removal of overburden to expose coal seams, followed by blasting and transport to the beneficiation plant located approximately 4.5 km from the mining faces.

Prior to 2014, Seival Sul Mineração was 70% owned by Eneva (formerly known as MPX Energia SA), with the remaining 30% stake held by Copelmi. At that time, a company statement noted that "the mine contains 152 million tons of proven coal reserves, more than enough to supply a 600 MW thermal plant for 20 years. The project has already been granted an operational license. Coal from the Seival Mine will be used to supply the MPX Sul TPP project (subsequently renamed Pampa Sul power station) and can also be sold in the region". In October of 2014, MPX and Copelmi entered a memorandum of understanding (MOU) that the stakes were to be flipped: "Upon completion of the Transaction, Copelmi and ENEVA shall each hold, in the SSM, 70% and 30% of the shares, respectively."

The MOU states "the Seival Mine, located in Candiota/RS, holds resources of more than 450 million tons of coal and, due to its location, stands as a potential and strategic supplier of coal to the Sul and Seival thermoelectric plant projects." Copelmi's Sul power station (since renamed Nova Seival power station) is still under development, while the Seival power station has been canceled.

In 2019, Eneva sold its remaining 30% stake in the Seival mine to Copelmi.

According to a special issue of "Brasil Mineral" in 2022, the Seival coal mine had produced 2.119 tons of coal the previous year (2021). The article stated that the mine's total nominal production capacity was 3.3 million tons per annum (MTPA), although other sources, including the company's website, maintained that the mine's total capacity was still 2.8 MTPA.

Brasil Mineral's 2024 industry profile recorded output at the Seival mine at an estimated 1.9 million tonnes of coal in 2023. A separate estimate by GlobalData put the mine's 2023 output at approximately 1.6 million tonnes.

Opposition Concerns

In March 2026, a health impact assessment by the Centre for Research on Energy and Clean Air (CREA) and the Instituto Internacional Arayara found that operations at the Candiota coal complex, which included the Seival Sul mine, could cause up to 1,300 deaths and generate R$11.7 billion in healthcare costs by 2040, with pollution impacts projected to extend to Argentina, Paraguay and Uruguay. The study estimated that 430 deaths had already occurred between 2017 and 2025, with a further 870 projected between 2026 and 2040. Researchers attributed the health impacts primarily to fine particulate matter (PM2.5) released during coal combustion, extraction, handling and transport, linking exposure to lung cancer, chronic obstructive pulmonary disease, ischaemic heart disease, stroke and diabetes. The study also projected 460 premature births and 270 low-weight newborns over the 2017–2040 period, as well as 1,730 emergency visits for asthma.

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Additional data

To access additional data, including an interactive map of world coal mines, a downloadable dataset, and summary data, please visit the Global Coal Mine Tracker on the Global Energy Monitor website.