Alumar — Brazil
Coal power plant in Maranhao, Brazil. Approximate location -2.7028, -44.3415.
CoalMaranhaoBrazil
Alumar is a 75.2 MW coal power plant in Maranhao, Brazil. It is operated by Consorcio Alumar. Based on its capacity (estimated), it can supply roughly 94k homes (estimated). It ranks #375 of 2,572 Brazil power plants by installed capacity. Commissioned in 2009, it is around 17 years old — relatively modern. In context, coal supplies about 2.3% of Brazil's electricity; the national grid averages 110 gCO₂/kWh (88.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id BRA0029591.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 75.2 MW, Alumar is below the median coal plant in Brazil (262 MW). Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Brazil coal capacity
- 0.8% of 9,486 MW across 30 plants in this dataset
- Age among peers
- 12 of 22 dated coal plants in Brazil are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest coal plants in Brazil
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Consorcio Alumar.
Local climate & thermal context
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a tropical savanna climate (Köppen Aw) — Southern Hemisphere, latitude 2.7°S — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
This site has effectively no heating season (tropical/equatorial climate), so winter heat loss is not the driver here. The thermal concern shifts to year-round process heat and humidity/heat-driven corrosion of hot equipment.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
Site climate & environmental severity
This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #20 largest coal power plant of 30 in Brazil by capacity.
Brazil has 30 coal power plants in this dataset, together about 9,486 MW of capacity.
Nearby power plants
- Geramar III power station · Gas · 1,894.2 MW · Maranhão
- Itaqui power station · Coal · 360 MW · Maranhão
- CEUMA - ASSOCIAÇÃO DE ENSINO SUPERIOR · Oil · 1.5 MW · Maranhao
- Porto do Itaqui (Antiga Termomaranhão) · Coal · 360.1 MW · Maranhao
- RIO ANIL SHOPPING · Oil · 1.46 MW · Maranhao
- São Judas Tadeu power station (Maranhão) · Gas · 300 MW · Maranhão
Location
Coordinates -2.7028, -44.3415 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Alumar?
Alumar is a 75.2 MW coal power plant in Maranhao, Brazil, commissioned in 2009.
Who operates Alumar?
Alumar is operated by Consorcio Alumar.