Porto do Itaqui (Antiga Termomaranhão) — Brazil

Porto do Itaqui (Antiga Termomaranhão) is a 360.1 MW coal power station in Maranhao, Brazil. It is operated by EDP Brasil SA [100%]. Based on its capacity (estimated), it can supply roughly 451k homes (estimated). It ranks #131 of 2,572 Brazil power plants by installed capacity. Commissioned in 2013, it is around 13 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 BRA0029700.

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 360.1 MW, Porto do Itaqui (Antiga Termomaranhão) is well above the median coal plant in Brazil (262 MW). Technically it is described as subcritical. 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

3.8% of 9,486 MW across 30 plants in this dataset

Age among peers

16 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 EDP Brasil SA [100%].

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 2.5°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 #10 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

• CEUMA - ASSOCIAÇÃO DE ENSINO SUPERIOR · Oil · 1.5 MW · Maranhao
• Itaqui power station · Coal · 360 MW · Maranhão
• RIO ANIL SHOPPING · Oil · 1.46 MW · Maranhao
• Geramar III power station · Gas · 1,894.2 MW · Maranhão
• Alumar · Coal · 75.2 MW · Maranhao
• São Judas Tadeu power station (Maranhão) · Gas · 300 MW · Maranhão

Location

Coordinates -2.5246, -44.2961 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions