Coal power plant in Minas Gerais, Brazil. Approximate location -20.5355, -43.6986.
CoalMinas GeraisBrazilSteam
Açominas is a 103 MW coal power station in Minas Gerais, Brazil. It is operated by Gerdau Acominas SA. Based on its capacity (estimated), it can supply roughly 129k homes (estimated). It ranks #306 of 2,572 Brazil power plants by installed capacity. Commissioned in 2002, it is around 24 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 BRA0000019.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.
capacity: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel
At 103 MW, Açominas is below the median coal plant in Brazil (262 MW). Technically it is described as Steam. 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.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Gerdau Acominas SA.
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a humid subtropical (dry winter) climate (Köppen Cwa) — Southern Hemisphere, latitude 20.5°S — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 88% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 18/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.
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.
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
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.
The #19 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.
Coordinates -20.5355, -43.6986 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Açominas is a 103 MW source-record coal power plant in Minas Gerais, Brazil, commissioned in 2002.
Its output is enough to supply roughly 128,772 homes (estimated).
Açominas is operated by Gerdau Acominas SA.
