Home / South America / Brazil / Açominas power station

Açominas power station

Gas power plant in Minas Gerais, Brazil. Approximate location -20.542, -43.7563.

GasMinas GeraisBrazilCO₂ modelled

Açominas power station is a 103 MW gas power station in Minas Gerais, Brazil. It is operated by Gerdau Acominas SA. Based on its capacity (estimated), it can supply roughly 116k homes (estimated). It ranks #305 of 2,572 Brazil power plants by installed capacity. Its modelled annual emissions are 235,660 t CO₂/yr (Climate TRACE), equivalent to about 55k cars driven for a year. In context, gas supplies about 7.3% of Brazil's electricity; the national grid averages 110 gCO₂/kWh (88.7% low-carbon) (2025).

103Source-backed capacity
116,007homes powered (est.)
235,660t CO₂ / yr (Climate TRACE)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CT-5532.

Data status

Known data

FacilityAçominas power station Climate TRACE
CountryBrazil · Minas Gerais Climate TRACE
Coordinates-20.542, -43.7563 Climate TRACE
FuelGas Climate TRACE
MW installed capacity103 MW Climate TRACE source record; scope not independently normalised
OwnerGerdau Acominas SA Climate TRACE

Modelled source data

CO₂ emissions235,660 t CO₂/yr modelled · Climate TRACE

Calculated from dataset

Capacity rank in country#305 of 2572 calculated
Fuel-specific rank in country#97 of 195 calculated
Capacity vs country/fuel peers1.03× · 100 MW median · 195 peers calculated
Homes-powered equivalent116,007 calculated
Climate19.2°C · HDD 162 derived from coordinates
Environmental severityC3 · 29/100 derived from coordinates

Not available

CommissionedNot available not in dataset
TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Capacity provenance

The public capacity above is a source-verified 2026 capacity claim: 103 MW for Açominas power station.

Source: GEM tracker raw 2026. Scope: operating/nameplate; source-backed GEM tracker 2026 plant record. Confidence: high_source_row_verified_strict.

Data provenance

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: GEM tracker 2026 (location L100001000114); fuel: Climate TRACE source-record fuel

In context: how this plant compares

At 103 MW, Açominas power station is around the median gas plant in Brazil (100 MW). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

~235,660 t CO₂/yr (modelled) — in everyday terms

This facility's annual emissions are roughly equivalent to:

55kpassenger cars driven for a year
31khomes' yearly energy use
3.9 milliontree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.

Capacity vs largest gas plants in Brazil

Porto Norte Fluminense power station: 3,400 MW3kPorto Nort…Porto de Sergipe power station: 2,909 MW3kPorto de S…Power Maricá power station: 2,600 MW3kPower Mari…Jandaia power station: 2,430 MW2kJandaia po…Vila do Conde power station: 2,310 MW2kVila do Co…Termopecém power station: 2,240 MW2kTermopecém…Tupã power station: 2,040 MW2kTupã power…GNA III power station: 1,927 MW2kGNA III po…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Gerdau Acominas SA.

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. 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.

19.2°Cannual mean temp
162heating degree-days (base 18°C)
591cooling degree-days (base 18°C)
987 melevation

Monthly mean temperature

J: 22 °CJF: 22 °CFM: 21 °CMA: 20 °CAM: 18 °CMJ: 16 °CJJ: 16 °CJA: 17 °CAS: 19 °CSO: 20 °CON: 20 °CND: 21 °CD22 °C

Heating degree-days here run 93% 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: 16/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.

A gas turbine here also runs ~3% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

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

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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
29/100environmental-severity index
6.0°Cseasonal temperature swing
297 kmdistance to coast

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.

How it compares & nearby plants

The #97 largest gas power plant of 195 in Brazil by capacity.

Brazil has 195 gas power plants in this dataset, together about 74,861 MW of capacity.

Nearby power plants

Location

Coordinates -20.542, -43.7563 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Açominas power station?

Açominas power station is a 103 MW source-record gas power plant in Minas Gerais, Brazil.

How many homes can Açominas power station power?

Its output is enough to supply roughly 116,007 homes (estimated).

Who operates Açominas power station?

Açominas power station is operated by Gerdau Acominas SA.

How much CO₂ does Açominas power station emit?

Açominas power station has modelled emissions of about 235,660 tonnes of CO₂ per year (Climate TRACE).

Built from open public data; no personal information. Operate this site? Request a correction or removal.